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Innovation has a name.
Commercial Modular High
Efficiency Condensing Boiler
UB - 70/110/140
Upsilon
Installation and Service
Manual
These instructions should be retained by user.
8G.51.91.03/09.13 Changes reserved. E. & O. E.
Installation and Service Manual Upsilon-Series
2
Version:
from sv 4.1
05-2013
Installation and Service Manual Upsilon-Series
3
Content
1 Introduction .............................................................................................................................................4
2 Regulations ............................................................................................................................................7
3 Scope of delivery ....................................................................................................................................9
4 Description ...........................................................................................................................................10
5 Installation and mounting ..................................................................................................................... 11
5.1 Wall-mounted in line .....................................................................................................................12
5.2 Free-standing in line .....................................................................................................................13
5.3 Free-standing back to back ..........................................................................................................14
5.4 Connecting the boiler ...................................................................................................................15
6 Hydraulic and gas line system ..............................................................................................................16
6.1 Heating system ............................................................................................................................16
6.2 Expansion vessel .........................................................................................................................17
6.3 Water quality ................................................................................................................................17
6.4 Gas line ........................................................................................................................................19
6.5 Condensate drain .........................................................................................................................20
7 Flue gas system ...................................................................................................................................22
7.1 Parallel boiler connection .............................................................................................................23
7.2 Concentric boiler connection ........................................................................................................23
7.3 Connecting the flue gas outlet/air supply system .........................................................................24
7.4 Individual flue gas outlet ...............................................................................................................24
7.5 Collective flue gas outlet ..............................................................................................................27
7.6 Condensate vent collective flue gas system ................................................................................30
8 Electrical connections ...........................................................................................................................31
8.1 External controls ..........................................................................................................................33
8.2 Wiring diagram .............................................................................................................................34
9 Boiler control ........................................................................................................................................36
9.1 Operational status ........................................................................................................................37
9.2 Operation .....................................................................................................................................37
9.3 Commissioning .............................................................................................................................38
9.4 Setting the flow temperature with On-Off-control .........................................................................40
9.5 Filling heating system ...................................................................................................................41
10 Basic settings .......................................................................................................................................42
11 Parameters ...........................................................................................................................................44
11.1 Activate factory settings ...............................................................................................................48
12 Put out of operation .............................................................................................................................48
13 Inspection and maintenance ................................................................................................................49
13.1 Maintenance intervals ..................................................................................................................49
13.2 Checks prior to commissioning ....................................................................................................49
13.2.1 Pollution check ..................................................................................................................50
13.2.2 Control O
2
.........................................................................................................................51
13.3 Maintenance activities ..................................................................................................................52
13.4 Counter running hours .....................................................................................................................
14 Error report ...........................................................................................................................................55
15 Warranty conditions ..............................................................................................................................56
15.1 General warranty ..........................................................................................................................56
15.2 Heat exchanger warranty .............................................................................................................56
15.3 Conditions for installation and use ...............................................................................................56
15.4 Exclusions ....................................................................................................................................57
15.5 Scope of the warranty ..................................................................................................................57
15.6 Claims ..........................................................................................................................................57
15.7 Obligations of A.O. Smith Water Heaters .....................................................................................57
Annex A Technical specications ................................................................................................................58
Annex B System water additives ................................................................................................................59
Annex C Dimensions ..................................................................................................................................60
Annex D Declaration of conformity .............................................................................................................65
Installation and Service Manual Upsilon-Series
4
1 Introduction
These instructions describe the functioning, installation, use and primary maintenance of
A.O.Smith central heating boilers for the United Kingdom and Ireland. Where necessary
the different regulations for each country are separately described.
These instructions are intended for the use of Gas Safe registered installers or registered
Bord Gais installers in connection with the installation and putting into operation of
A.O.Smith boilers. It is advisable to read these instructions thoroughly, well in advance
of installation. Separate instructions for use are supplied with the boiler for users of
A.O.Smith central heating boilers. A.O.Smith is not liable for the consequences of
mistakes or shortcomings which have found their way into the installation instructions
or user’s manual. Further, A.O.Smith reserves the right to alter its products without prior
notication.
Whendeliveringtheboiler,givethecustomerclearinstructionsconcerningitsuse;
presentthecustomerwiththeuser’smanual.
Withregardtoinstallinguesystemsand/orexternalcontrols,wereferyoutothe
supplierinvolved.
Each boiler is tted with an identication plate. Consult the details on this plate to verify
whether the boiler is compliant with its intended location, e.g.: gas type, power source
and exhaust classication.
Installation and Service Manual Upsilon-Series
5
description components gure 1.a
1 heat exchanger 1 (All UB-types)
2 heat exchanger 2 (UB 110 and UB 140)
3 ignition unit
4 fan unit
5 damper
6 gas valve
7 automatic air vent
8 main switch 230V
9 boiler contol unit
10 control unit MMI
11 connection terminal
12 connection terminal cascade bus communication
13 syphon
14 circulation pump
15 gas isolation valve (in optional boiler connections set)
16 service valves ow/return (in optional boiler connections set)
17 ll and drain valve (in optional boiler connections set)
18 safety valve (in optional boiler connections set)
19 ue connection
20 air supply
21 collective ue pipe
22 information plate
T1 ow sensor
T1a secondary ow sensor (only HEX4)
T2 return sensor
P1 water pressure sensor
G gas pipe
A ow pipe CH
R return pipe CH
C condensate drain pipe
1
2
3
4
5
6
7
8
10
9
11
12
13
14
3
4
5
6
7
G C A
R
15 16
18
17
22
21
20 19
T1a
T2
P1
T1
Installation and Service Manual Upsilon-Series
6
description components gure 1.b
1 Air supply (for parallel ue connection)
2 Flue/Air supply (concentric)
3 Gas isolation valve
4 Service valves ow and return
5 Non-return valve
6 Flow/return header
7 Gas line
8 Low velocity header
9 Safety valve
10 Fill and drain valve
11 Automatic air vent low velocity header
12 Pocket for temperature sensor T10
13 Cascade manager
14 Frame
1 2
3 4 5 6 78 10 9
11
12
13
14
Installation and Service Manual Upsilon-Series
7
2 Regulations
The following regulations apply to the installation of A.O.Smith central heating boilers:
Legislation and Regulations.
Gas Safety (Installation and Use) Regulations. All gas appliances must by law, be installed by
a competent person, eg. Members of Gas Safe Register and in accordance with the current
Gas Safety (Installation and Use) Regulations. Failure to install the appliance correctly could
lead to prosecution.
All Gas Safe registered installers carry a Gas Safe ID card and have a registration number.
You can call Gas Safe Register directly on 0800 408 5577.
In addition to the above regulations this appliance must be installed in compliance with the
current IEE Regulations, the Building Standards (Scotland Consolidation) Regulations.
Regulations and byelaws of the Local Water Authority and the Current Health and Safety
Regulation.
Ireland:
- Irish standard 813
The current Electricity at Work Regulation must be complied with and also be in
accordance with the relevant and current editions of the British Standards.
The Upsilon boiler is a certied appliance and must not be modied or installed in any
way contrary to this Installation Manual. Manufacturers instructions must not be taken,
in any way, as overriding statutory obligations.
The Upsilon is a central heating boiler for individual or multiple cascade purposes. These
boilers must be connected according to these instructions and all installation norms in
respect of the part of the boiler to be connected.
Theapplianceis nottobeusedbychildrenorpersonswithreducedphysical,
sensoryormentalcapabilities,orlackofexperienceandknowledge,unlessthey
havebeengivensupervisionorinstructions.
Childrenbeingsupervisedarenottoplaywiththeappliance.
Observe the following rules of safety:
- All work on the boiler must take place in a dry environment.
- Upsilon boilers may never be in operation without their housing, except in connection
with maintenance or adjustments (see Chapter 13).
- Never allow electrical or electronic components to come into contact with water.
Carry out the following tasks in connection with maintenance, etc. to an already-installed
boiler:
- Shut down all programs
- Close the gas isolation valve
- Turn off the boilers electrical isolator switch.
Installation and Service Manual Upsilon-Series
8
Take note of the following when maintenance or adjustments are needed:
- The boiler must be able to function during these activities; for this reason, the boiler’s
supply voltage, gas pressure and water pressure must be maintained. Ensure that
there is not a source of potential danger during these activities.
Followingmaintenanceor otheractivities;alwayschecktheconnections ofall
partsthroughwhichgasows(usingleak-searchspray).
The following (safety) symbols may be encountered in these installation instructions and
on the boiler:
Thissymbolindicatesthattheboilermustbestoredawayfromfrost.
Thissymbolindicatesthatthepackagingand/orcontentscanbedamagedasa
resultofinsufcientcaretakenduringtransport.
Thissymbolindicatesthat,whilststillinitspackaging,theboilermustbeprotected
fromweatherconditionsduringtransportandstorage.
KEY-symbol.Thissymbolindicatesthatassemblyordismantling,mustbecarried
out.
ATTENTIONsymbol.Thissymbolindicatesthatextraattentionmustbepaidin
connectionwithaparticularoperation.
Usefultiporadvice.
Installation and Service Manual Upsilon-Series
9
3 Scopeofdelivery
The boiler will be delivered ready for use. The delivery package includes the following:
Boiler and housing:
• Boiler pump(s);
• Cascade control system;
Automatic air vent(s);
Siphon;
Lid ø100 air supply (with screw);
PG cable glands;
Suspension bracket;
Mounting material consisting of plugs and screws;
Installation and Service Manual;
User manual;
Depending on the selected cascade systems, the following parts are supplied:
1. Pipe work headers for ow/return and gas
DN65 or DN100 ow/return pipe work headers for 2 or 3 boilers with:
• Flanges, M12/16 bolts, nuts, spring washers and gaskets
• 35 mm blind covers for unused boiler connections
DN50 or DN65 gas pipe work headers for 2 or 3 boilers with:
• Flanges, M12 bolts, nuts, spring washers and gaskets
• 1¼" blind covers for unused boiler connections
• M6x8x16 close tolerance bolts for fastening gas pipeline
Adjustable feet M8x35
2. Boiler connection set
Couplings and pipe branches
Isolation valves
Supply and drainage tap with T-piece;
3. Low velocity header
DN65 or DN100 Low velocity header with:
Adjustable feet, bolts, nuts, spring washers and gaskets
Automatic air vent, sensor pocket for T10 and drain valve
4. Frame (if stand-alone)
Assembly frame (for 1 boiler in line or 2 boilers back to back)
I-column(s)
L-column(s) (for back- to- back positioning)
Adjustable feet, bolts, spring washers and nuts
5. Parts such as: Bus communication cable, insulation sets, common ow sensor T10, etc.
Installation and Service Manual Upsilon-Series
10
4 Description
The Upsilon is a condensing and modulating CH-boiler.
The boiler has one or two stainless steel heat exchangers with smooth pipes. A high-
tec principle with durable materials suitable for room sealed open ue or over pressure
cascade ue systems
The CH-boiler uses (natural) gas to supply heat. This heat is transferred in the heat
exchanger to the water contained in the CH-installation. Severe cooling down of the
ue-gases causes condensation. That is the reason why they are so highly efcient.
The internal syphon drains off the resulting condensate, which does not have a negative
impact on the heat exchanger or its functioning.
The boiler is equiped with its own controller per heat exchanger and is tted with an in-
tegrated cascade manager. The control unit (MMI) allows central read-outs of settings.
Each boiler anticipates the heat demands of the CH-installation or the hot water supply.
Consequently, the boiler modulates its capacity to the installation. As a result, the boiler
will be operational longer at a lower level. The cascade manager controls the boiler order
and even allocation of burning hours.
Connected to an external sensor, the control can operate weather dependent. This means
that the control system measures outside temperatures and water ow temperatures.
Using this data, the control system works out the optimum water ow temperature re-
quired for the installation.
Standard connection facilities for external controls via OpenTherm, on/off-contact or 0-10
volt control are available, including built in time program.
Upsilon CH-boilers are high-powered wall-mounted gas boilers for instances where a lot
of power is required. Cascading the Upsilon CH-boilers provides ample room to connect
up to a maximum of 8 boilers and an output capacity of 1.1 MW. The Upsilon-series is
structured as follows:
- UB 70 Nominal capacity (80/60°C) 60.0kW
- UB 110 Nominal capacity (80/60°C) 95.0kW
- UB 140 Nominal capacity (80/60°C) 120.0kW
Explanation of type indication: Upsilon UB 140
Upsilon = Serie
UB = Type
140 = Indication of input load in kW
In principle any combination is possible. Based on the requested capacity, A.O.Smith’s
online cascade congurator offers various options.
You can choose either the most efcient or the most compact solution yourself.
The capacity of the hydraulic pipes, gas line and low velocity header are adjusted to the
selected overall demand.
WheninstallingasingleUpsilonboilerofcascadedUpsilon boiler,youshould
alwaysusealowvelocityheaderadjustedtothesetdemand.A.O.Smithsupplies
2lowvelocityheaderversions,whicharesuitableforamaximumdemandofeither
452kWor960kW(80/60°C) respectively.
Ifchangesaremadetotheboilerconstructiontheboilernolongercomplieswith
theCErequirements.
Installation and Service Manual Upsilon-Series
11
5 Installationandmounting
Install the boiler in a well-ventilated boiler room in accordance to the actual
regulations.
The installation location of the CH-boiler(s) has to be, and remain, frost-free.
It is NOT necessary to have a purpose provided air vent providing a twin pipe or
concentric room sealed ue system is used in the room or internal space in which the
boiler is installed. Neither is it necessary to ventilate the compartment in which the boiler
is installed, due to the extremely low surface temperature of the boiler casing during
operation. Therefore the requirements of BS 6798, Clause 12, and BS5440:2 may be
disregarded.
The oor has to be at and level and have sufcient deadweight capacity for the complete
(lled) installation.
The Upsilon cascade can be mounted in 3 ways:
- Wall-mounted in line All boilers alongside one another on the wall
Refer to chapter 5.1 and 5.4
- free-standing in line All boilers hanging alongside one another on a free-
standing frame. Refer to chapter 5.2 and 5.4
- free-standing back-to-back. All boilers hanging back-to-back on a free-standing
frame. Refer to chapter 5.3 and 5.4
General guidelines:
Payattentiontotheminimumdistancerequiredbetweentheboilers,wallsand
ceilingforinstallingandremovingthehousing(refertog.5.a.)forcommissioning
andservicingandinstallingtheuesystem(refertochapter7).
Figure 5.a measurements in mm
wall or frame
ceiling
*
460 400
600
50 50
*
Individual ue: min. 400mm
Collective ue: dependant from selected
ue sytem. Please contact the supplier
Installation and Service Manual Upsilon-Series
12
5.1Wall-mountedinline
A . Position the pipe work header against the wall. When using several pipe work
headers: couple the pipe work headers and supplied gaskets, M12 (DN65) or M16
(DN100) bolts, spring washers and nuts. Align the pipe work header(s) horizontally
using the adjustable feet.
B. Determine the position of the suspension brackets based on gure 5.1.c. The boi-
lers can be tted on the wall using the supplied suspension brackets and mounting
material (minimum of 3 screws for each boiler). The wall has to be at and strong
enough to carry the weight of all boilers including their water contents.
Figure 5.1.a
Figure 5.1.c measurements in mm
Figure 5.1.b
C. Hang the boilers on the suspension brackets.
Lifttheboileronlybythespecialgripsonthebottompanel(1)andsupport
theboilerbyitsrearpanel(2).Refertogure5.1.d.
D. Place the gas line in its intended recess. When using several pipe work headers:
couple the gas lines using the supplied DN50/DN65 gaskets, M12 bolts, spring
washers and nuts. Refer to gure 5.1.e.
Fastenthegaslinewiththe2specialclosetoleranceboltsM6x8x16oneach
angeofthepipeworkheader(s).Refertogure5.1.f.
Continue with chapter 5.4
Figure 5.1.d
Figure 5.1.e
Figure 5.1.f
1
1
2
2
Liftingandcarryingprecautions:
- Lift only a manageable weight, or ask for help.
- When lifting the boiler, bend the knees, and keep the back straight and feet apart.
- Do not lift and twist at the same time.
- Lift and carry the boiler close to the body.
- Wear protective clothing and gloves to protect from any sharp edges.
Installation and Service Manual Upsilon-Series
13
5.2 Free-standinginline
A . Position the pipe work header in the required location. When using several pipe work
headers: couple the pipe work headers using the supplied gaskets, M12 (DN65) or
M16 (DN100) bolts, spring washers and nuts. Align the pipe work header(s) horizon-
tally using the adjustable feet.
B. Place the gas line in its intended recess. When using several pipe work headers:
couple the gas lines using the supplied DN50/DN65 gaskets, M12 bolts, spring
washers and nuts. Refer to gure 5.2.b.
Fastenthegaslinewiththe2specialclosetoleranceboltsM6x8x16oneach
angeofthepipeworkheader(s).Refertogure5.2.c.
C. Fit the I-columns on the ange plate using 2x bolts M8x40x70mm.
Attention:Usethecorrectholesinthecolumn!
Whenusingaleftangeplate:usetheright-handholesinthecolumn.
Whenusingaright-handangeplate:usetheleft-handholesinthecolumn.
D. Fit a mounting frame on the I-column using 3-x bolt M8x50mm. Refer to gure 5.2.e.
Attention:mountingrailatthetop.
E. Fit a mounting frame on the other I-column using 3-x bolt M8x50mm. Refer to gure
5.2.f.
If boilers also have to be tted on the other side of the I-column, then the next moun-
ting frame also has to be tted straight on it.
F. Fit the remaining I-column(s) between the mounting frames using 3x M8x50mm.
Refer to gure 5.2.f.
G. Hang the boilers on the mounting rail.
Lifttheboileronlybythespecialgripsonthebottompanel(1)andsupport
theboilerbyitsrearpanel(2).Refertogure5.2.g.
Continue with chapter 5.4
Figure 5.2.a
Figure 5.2.b
Figure 5.2.c
Figure 5.2.d
OK
Figure 5.2.e
Figure 5.2.f
Figure 5.2.g
1
1
2
2
Liftingandcarryingprecautions:
- Lift only a manageable weight, or ask for help.
- When lifting the boiler, bend the knees, and keep the back straight and feet apart.
- Do not lift and twist at the same time.
- Lift and carry the boiler close to the body.
- Wear protective clothing and gloves to protect from any sharp edges.
Installation and Service Manual Upsilon-Series
14
5.3 Free-standingback-to-back
A. Position the pipe work header in the required location. When using several pipe work
headers: couple the pipe work headers with the supplied gaskets, M12 (DN65) or M16
(DN100) bolts, spring washers and nuts. Align the pipe work header(s) horizontally
using the adjustable feet.
B. Place the gas line in its intended recess. When using several pipe work headers:
Couple the gas lines using the supplied DN50/DN65 gaskets, M12 bolts, spring
washers and nuts. Refer to gure 5.3.b.
Fastenthegaslinewiththe2specialclosetoleranceboltsM6x8x16oneach
angeofthepipeworkheader(s).Refertogure5.3.c.
C. Fit the L-columns on the ange plate using 2 x bolts M8x40x70mm.
Attention:Usethecorrectholesinthecolumn!
Whenusingaleftangeplate:usetheright-handholesinthecolumn.
Whenusingaright-handangeplate:usetheleft-handholesinthecolumn.
D. Fit a mounting frame on the L-column using 3x bolt M8x50mm. Refer to gure 5.3.e.
Attention:mountingrailatthetop.
E. Fit a mounting frame on the other L-column using 3-x bolt M8x50mm. Refer to gure
5.3.f.
If boilers also have to be tted on the other side of the L-column then the next moun-
ting frame also has to be tted straight on it.
F. Fit the remaining L-column(s) between the mounting frames using 3x M8x50mm.
Refer to gure 5.3.f.
G. Hang the boilers on the front and rear of the frame on the mounting rail.
Lifttheboileronlybythespecialgripsonthebottompanel(1)andsupport
theboilerbyitsrearpanel(2).Refertogure5.3.g.
Continue with chapter 5.4
Figure 5.3.a
Figure 5.3.b
Figure 5.3.c
Figure 5.3.d
OK
Figure 5.3.e
Figure 5.3.f
1
1
2
2
Figure 5.3.g
Liftingandcarryingprecautions:
- Lift only a manageable weight, or ask for help.
- When lifting the boiler, bend the knees, and keep the back straight and feet apart.
- Do not lift and twist at the same time.
- Lift and carry the boiler close to the body.
- Wear protective clothing and gloves to protect from any sharp edges.
Installation and Service Manual Upsilon-Series
15
5.4 Connectingtheboiler
A. Remove the remaining packaging part from the bottom of the boiler.
Note:thispackagingpartisprovidedwithboilerpartswhichareneededfor
mountingtheboiler.
B. Cap the connections that are not used on the pipe work headers:
Flow and return: ø35mm blind compression tting (2 items/boiler)
Gas: 1 ¼" blind cap with gasket (1 item/boiler)
Forconnections,usethesuppliedgaskets.Checkallconnectionsforleakage
andgas-tightness.
C. Connect the isolations valves to the boiler:
Flow: 1½" at coupling x 35mm compression isolation valve with red handle
Return: 1½" at coupling x 35mm compression tting cross union with
ll/drain valve and isolation valve
Fit according to the installation design choice the supplied 3 or 4 bar overow safety
valve in the cross union.
Gas: 1¼" x 28mm gas isolation valve
Pollutedtestwatermaybereleasedwhenremovingtheplasticcapsonthe
boilerowandreturn.
Forconnections,usethesuppliedgaskets.Checkallconnectionsforleakage
andgas-tightness.
D. Connect the valves to the pipe work headers:
Flow: 35mm pipe pieces with 35mm compression ttings (elbow and socket)
Return: 35mm pipe pieces with 35mm compression ttings (elbow and socket)
Gas: 28mm pipe piece with 1¼" at and 28mm compression tting
Back-to-back installation:
Flow: 35mm pipe pieces with 35mm compression ttings (bend and socket)
Return: 35mm pipe pieces with 35mm compression ttings (bend and socket)
Gas: 28mm pipe piece with 1¼" at and 28mm compression tting
Forconnections,usethesuppliedgaskets.Checkallconnectionsforleakage
andgas-tightness.
E. Fill the siphon with tap water and t the siphon cup underneath the boiler.
The siphon cup is supplied separately and can be found behind the housing.
Figure 5.4.b
Figure 5.4.c
Figure 5.4.d
Figure 5.4.a
Installation and Service Manual Upsilon-Series
16
6 Hydraulicandgaspipelinesystem
6.1 Heatingsystem
Install the CH-system in accordance with present legislation.
The pipe work headers are available in 2 dimensions, i.e. DN65 and DN100 and are
connected to one another by the ange couplings and gaskets, M12 or M16x55 bolts,
spring washers and nuts. The low velocity header and the complete installation can then
be connected to it.
Lowvelocityheader
There are 3 low velocity headers available:
0310335 Low velocity header for 1 or 2 XL boilers to max. 200kW (g. 6.1.a)
Boiler connections are 4x 1 1/2", installation connections are 2x 2". The low velocity
header must be suspended in the pipework. Supplied with automatic air vent, drain
valve and pocket for temperature sensor T10.
0310272 Low velocity headers DN65 to 452kW (g. 6.1.b)
0310273 Low velocity headers DN100 to 960kW
The low velocity headers comes standard with adjustable feet, automatic air vent,
drain valve, pocket for temperature sensor T10, M12 or M16x55 bolts, spring washers
and nuts. The low velocity header can be positioned on either the left or right hand
side of the pipe work headers.
0310290 Temperature sensor T3/T10 (g. 6.1.c)
Everysystemwith1ormoreUB-boilersmustbeprovidedwithaowtemperature
sensorT10andmustbeconnectedonthemasterboiler(address01)toterminal3,
position5and6.Theowsensormustbeplacedinthepocketofthelowvelocity
header.
Setofbends
The low velocity header can be positioned at a 90° angle. A set of bends may be used
for that purpose.
0310274 Bends set DN65 ow/return (g. 6.1.d)
0310275 Bends set DN100 ow/return
Blankinganges
The ends of the pipe work headers have to be tted with blanking anges. The blanking
anges come standard with a fully congured delivery, including bolts, spring washers
and gaskets.
0310276 Blanking ange set DN65 ow/return 2 items (g. 6.1.e)
0310277 Blanking ange set DN100 ow/return 2 items
Welded-onanges
Upon request, welded-on anges are available to connect CH-pipe lines to the secondary
side of the low velocity header and to connect the gas line.
0310336 Welded-on ange set DN65 ow/return 2 items + DN50 gas 1 item (g. 6.1.f)
0310337 Welded-on ange set DN100 ow/return 2 items + DN65 gas 1 item
Figure 6.1.b
Figure 6.1.d
Figure 6.1.e
Figure 6.1.f
Figure 6.1.c
Figure 6.1.a
Installation and Service Manual Upsilon-Series
17
Required components that are not supplied by A.O.Smith:
- The installation pump; - The condensate discharge system.
- The installation water lter; - Air and dirt separator
- Gas lter; - Hot water supply
- Regulation valve;
6.2 Expansionvessel
The CH-installation has to be tted with an expansion vessel. The expansion vessel used
has to comply with the water contents of the installation.
It is not necessary to install an expansion vessel to each boiler. One single, central instal-
led expansion vessel is sufcient. When using a single expansion vessel the handles of
the valves on the ow and return pipes below the boiler have to be removed whilst open.
A boiler expansion vessel can be connected on the cross union inside the return pipe
to each boiler, if required. The connection is tted with a 3/4" outer thread blanking cap.
6.3 Waterquality
Fill the installation with drinking water.
In most cases, a heating system can be lled with water according to national standards
for water and treatment of this water is not necessary.
In order to avoid problems with the CH-installations, the quality of the lling water has to
meet the specications mentioned in table 6.3.a:
If the lling water does not meet the required specications, you are advised to treat the
water to such an extent that it does meet the required specications.
Thewarrantybecomesinvalid,iftheinstallationisnotbeingushedand/orthe
quality of the lling water does not meet the specications recommended by
A.O.Smith.AlwayscontactA.O.Smithinadvance,ifthingsarenotclearoryou
wishtodiscussanydeviations.Withoutapproval,thewarrantybecomesinvalid.
Installation:
- The use of groundwater, demi-water and distilled water is prohibited. (on the next
page you will nd an explanation of these denitions)
- If the drinking water quality meets the specications mentioned in table 6.3.a, you
can start ushing the installation before installing the boiler(s).
- Whilst ushing, corrosion products (magnetite), tting products, cutting oil and other
undesirable products have to be removed.
- Another possibility is to remove the pollution by installing a lter. The lter type has
to t the type and grain size of the pollution. A.O.Smith recommends lter usage.
- In this case, the whole piping system should be taken into consideration.
- The CH-installation has to be properly vented before using the system. For that pur-
pose, we refer to the commissioning chapter.
- If a regular water top up is required (>5% on an annual basis), then there is a struc-
tural problem and an installer has to solve the problem. Adding regularly fresh water
to the system also adds additional calcium and oxygen implying that magnetite and
calcium residues can continue. The result may be blockages and/or leakages.
- The use of anti-freeze and other additives requires periodical quality checks of the
lling water in accordance with the period laid down by the additives supplier.
- Chemical additions are to be avoided and should only be used after A.O.Smith has
approved their corresponding use.
- Should you wish to achieve the required water quality by using chemical additives, then
this is your own responsibility. The warranty on the product delivered by A.O.Smith
expires, if the water quality does not meet A.O.Smith´s specications or the chemical
additives have not been approved by A.O.Smith.
Installation and Service Manual Upsilon-Series
18
- On installation and during additions or changes at a later stage, A.O.Smith recom-
mends to keep a record of the type of water used, its quality at the time, and if ap-
plicable, which additives and quantities were added.
Parameter Value
Water type Potable water
Softened water
pH 6.0-8.5
Conductivity (at 20°C in µS/cm) Max. 2500
Iron (ppm) Max. 0.2
Hardness (°dH):
Installation volume/capacity
<20 l/kW
1-12
Installation volume/capacity
>=20 l/kW
1-7
Oxygen No oxygen diffusion allowed during
operation.
Max. 5% lling water addition annually
Corrosion inhibitors Refer to Additives Attachment
pH increasing or lowering agents Refer to Additives Attachment
Anti-freeze additives Refer to Additives Attachment
Other chemical additives Refer to Additives Attachment
Solid substances Not allowed
Residues of processing water not for-
ming part of the drinking water
Not allowed
table 6.3.a
Watertypedenition:
Potable water: Tap water compliant with the European drinking water guideline:
98/83/EG dated 3 November 1998.
Softened water: Water with partly de-ionised calcium and magnesium.
Demi-water: Virtually completely demineralised water (very low conductivity)
Distilled water: Water no longer containing minerals.
Installation and Service Manual Upsilon-Series
19
6.4 Gasline
Mount the gas line in accordance with present legislation.
If required, mark the gas line in accordance with present legislation.
UnitedKingdom:
The gas supply must comply to the current Gas Safety, Installation & Use Regulations.
Ireland:
- Irish standard 813
- Domestic gas installations
The gas line leading to the installation has to be calculated to the maximum capacity to
determine the diameter of the supply pipe.
The gas line has to be placed on the allocated openings of the ange plates of the pipe
work headers ow/return and secured on all ange plates by the special M6x8x16 close
tolerance bolts.
Pressure loss for a newly installed natural gas line may be 1.7 mbar max. In the case of
an extension, this may be 2.5 mbar max. This value is to be measured in between the
operational gas meter and the CH-boilers.
For correct functioning of the boilers, it is necessary that the gas dynamic inlet pressure
must be at least 19 mbars.
Withregardtonewlinesinparticular,ensurethatthegaslinedoesnotcontain
anyresidualpollution.
The Upsilon boilers can be converted from natural-gas to propane/lpg and from propane/
lpg to natural-gas. When the boiler has to be converted, A.O. Smith provides special kits
for this purpose. Special instructions are supplied with the kit.
Thelpg-gashastohaveapropanepurityofatleast90%.Whenthebutane-level
isgreaterthen10%thewarrantyconditionsontheheatexchangersarenotvalid.
Following maintenance tasks always check all gas carrying components for
leakagesbyusingleakagedetectionspray.
Figuur 6.4.a
Installation and Service Manual Upsilon-Series
20
6.5 Condensatedrain
All A.O.Smith wall hung gas red condensing boilers contain a syphonic condensate trap
to collect and release condensate.
The amount of condensate formed is determind by the type of boilers and the water
temperature produced by the boiler.
Condensatepipework.
Press the supplied plastic ribbon tube onto the condensate drain at the bottom of the
boiler (g. 6.5.a). Connect the tube to the main condensate drain (minimum diameter=
40mm) by means of an open connection to avoid sewage gasses coming into the boiler.
Fit a pipe work header for the condensate drain behind the hydraulic system. For that
purpose, the ange plates have holes allowing the installation of a PVC drain of ø40mm
max. Use this drain to connect the individual condensate drains of each boiler.
The syphon of a ue gas system can also be connected, if required, by means of an
open connection.
Routingofthepipework,
Wherever possible, the condensate pipework should be routed internally to prevent
freezing.
The condensate pipework must fall at least 50mm per metre towards the outlet and take
the shortest possible route
Support the pipe at least every 50 cm for near horizontal sections and 1 metre for vertical
sections
Externalpipework
The pipework should be kept to a minimum and the route as vertical as possible.
Do not exceed 3 metres outside the dwelling.
The condensate pipe must be run using suitable corrosion resistant materials (eg. plastic).
Terminate as close to the ground or drain as possible (below the grating and above the
water level) while still allowing for safe dispersal of the condensate.
Connection of a condensate drainage pipe to a drain may be subject to local building
controls.
Pipework subjected to extreme cold or wind chill conditions should be in a 40mm diameter
pipe.
Protect all external pipework with weather resistant insulation and, if necessary, box in,
to reduce the risk of freezing.
Makingitsafe.
Condensate pipework must not leak, freeze or block up.
Condensate traps must be lled before ring the boiler to prevent the possibility of potential
harmful ue products evacuating via the condensate route.
Do not dispose condensate into a water recovery system where it is reclaimed for reuse.
Condensate can be discharged into a rainwater hopper which is part of a sewer carrying
both rain water and foul water.
Figuur 6.5.a
Figuur 6.5.b
Installation and Service Manual Upsilon-Series
21
Finaldischargeoptions.
The condensate pipe can only terminate into any one of the ve areas as shown in the
diagrams on this page.
Draining of the condensation water to the external rain guttering is not
permittedinviewofthedangeroffreezing.
Beforeputtingtheboilerintooperationllthesyphonwith600mlofwater.
A -Condensate from boiler syphon/trap
B -Sink with internal overow
C -25mm dia. Plastic condensate pipe
D -External drain or gully
E -Internal soil and vent stack.
F -Serviceable condensate trap (75mm min.)
G -300mm x 100mm dia. sealed plastic tube.
H -Ground level
J -Drainage holes facing away from the building
K -Lime stone chippings
L -Weather resistant insulation
Drain requirements gure 6.4.c
Installation and Service Manual Upsilon-Series
22
7 Fluegassystem
The ue gas exhaust system and air supply system consists of:
- Flue gas pipe;
- Air supply pipe;
- Roof or wall terminal.
The ue gas exhaust system and air supply system must comply with:
UnitedKingdom:
The ue gas outlet and air supply installation must comply with the current regulation
requirements. IG UP 10, BS 715 and BS 6644.
Ireland:
- Irish standard is 813 section 9.10.1
Furthermore:
- BoilerClassindicatedontheboilerstypeplate(Fluecategory)
- Locally applicable rules.
- The supplier’s installation instructions
Whenindoubtorifyouhaveanyquestions,alwayscontactA.O.Smith.
The boiler can be tted with a parallel connected ue gas outlet and air supply system
(the connection diameter for both channels is ø100mm) or a concentric ue gas outlet
and air supply system. In that case, the connection diameter is ø100/150mm. Refer to
chapter 7.1 or 7.2.
Installation and Service Manual Upsilon-Series
23
7.1 Parallelboilerconnection
The boiler comes as standard with a parallel connection for the ue gas outlet and air
supply system.
The air supply opening (1) has a diameter of ø100mm.
The air supply channel can be connected to it, or, if it involves an “open device” (Drainage
category B), an air lter can be connected (recommended).
The air supply (3) of the concentric part is closed by a lid ø150mm.
The ue gas outlet connection (2) has a diameter of ø100mm.
7.2 Concentricboilerconnection
Carry out the following tasks to convert the boiler to a concentric connection.
- Remove the lid ø150 (3) from the air supply connection of the concentric connection
component (2).
- Fit the lid ø100 on the air supply opening (1) and secure it with the screw (all parts
are delivered separately in the foam wrapping underneath the boiler)
The air supply opening has a diameter of ø150mm.
The ue gas outlet connection has a diameter of ø100mm.
The ue gas outlet-/air supply system is then connected to the concentric connection
component.
1430
660
1070
460
1715
1
2
3
1430
660
1070
460
1715
1
2
3
Figure 7.1.a
Figure 7.2.a
Installation and Service Manual Upsilon-Series
24
7.3 Connectingtheuegasoutlet-/airsupplysystem
Upsilon-boilers can be used both in an “open” and in “closed" system.
Open: The required combustion air is taken from the immediate environment (boi-
ler room). For this purpose, please comply with the applicable boiler room
ventilation regulations BS 6644.
WhenusingboilercategoryB23andB33asan'openboiler',theprotectiondegree
oftheboilerwillbeIPX0DinsteadofIPX4D.
A.O.Smithrecommendstheapplicationofanairlterontheairintakeoftheboiler
(availableasanaccessorywithart.nr.0310288).Ifnolterisplacedtheremustbe
adevice(eg.grid)ontheairintakeoftheboilertobeconstructedorttedsucha
waythatanobjectwithadiameterØ16mmcannotbepushedin.
Closed: The required combustion air is sucked in from the outside through a channel.
This improves installation possibilities within a building. In general, outside
air is cleaner than air from the boiler room.
The following ue gas outlet systems can be used for the Upsilon-boiler:
- Individual ue gas outlet
- Collective ue gas outlet under-pressure
- Collective ue gas outlet over-pressure
7.4 Individualuegasoutlet
Opting for an individual ue gas outlet is determined by:
- Favourable position of boilers with regard to outlet area (wall or roof)
- Limited space above the boilers
- Limited number of boilers
You may opt for:
- Roof terminal (pitched or at roof)
- Wall terminal
Whentheboilerisoperational,itproducesawhiteplumeofcondensation.This
condensationplumeisharmlessbutmaycausesomeinconvenience,particularly
inthecaseofwallterminal.Asaresult,roofterminalsarepreferred.
Inaclosedinstallation,roofterminalsshouldbeatthesameheightpreventingue
gasfrombeingsuckedinbytheotherboiler(recirculation).Outletsinrecesses
andnearerectedwallsmayalsobringaboutuegasrecirculation.Recirculation
hastobepreventedatalltimes.
A.O.Smith supplies the following roof and wall ducts:
0304264 Roof terminal Ø100 - 150
0302505 Wall terminal Ø100 - 150
Accessory options:
0306017 Lead roof tile ø150 for angled roof
0302509 Roof connection plate ø150 for at roof
We suggest you design a simple ue gas system and air supply system. For further
information about the available components of the ue gas and air supply system we
recommend you consult the A.O.Smith ue literature.
The A.O.Smith ue gas system is meant, and designed, solely for the use on A.O.Smith
central heating boilers adjusted to Nat gas or LPG. The maximum ue gas temperatures
are below 70°C (full load 80/60°C)
The proper operation may be adversely inuenced by changes of or adjustments to the
correct set up.
Installation and Service Manual Upsilon-Series
25
Possible warranty claims will not be honoured if incorrect changes result in non compliance
with the installation manual or local rules and regulations.
The ue gas system should be built up using only A.O.Smith program products.
Combinations with other brands or systems are, without written permission from
A.O.Smith, not permitted.
The terminal should be located where dispersal of combustion products is not unimpeded
and with due regard for the damage or discolouration that might occur to parts of the
building in the vicinity (see g 7.4.a).
terminalpositionforfanassistedboiler
minimum
distance
A
directlybelowanopenwindoworotheropening
(e.g.airbrick)
mm
300
B belowgutters,soilpipesordrainpipes
mm 75
C
beloweaves
mm 200
D belowbalconiesorcarportroof
mm 200
E
fromverticaldrainpipesandsoilpipes
mm
75
F frominternalorexternalcorners
mm 300
G
abovegroundorbelowbalconylevel
mm 300
H fromasurfacefacingaterminal
mm 600
I
fromaterminalfacingaterminal
mm 1200
J
fromanopeninginthecarport(e.g.door
window)intodwelling
mm 1200
K verticallyfromaterminalonthesamewall
mm
1500
L horizontallyfromaterminalonthesamewall
mm 300
M horizontallyfromaverticalterminaltoawall
mm 300
Dimensions table 7.4.a
figure 7.4.a
In certain weather conditions condensation may also accumulate on the outside of the
air inlet pipe. Such conditions must be considered and where necessary insulation of
the inlet pipe may be required.
In cold and/or humid weather water vapour may condense on leaving the ue terminal.
The effect of such ‘pluming’ must be considered.
The terminal must not be located in a place where it is likely to cause a nuisance.
For protection of combustibles, refer to IS 813 section 9.10.1. where the terminal is less
than 2m ( 6.6ft ) above a pavement or platform to which people have access ( including )
any balcony or at roof. The terminal must be protected by a guard of durable material.
Contact A.O. Smith for a suitable guard.
Whereaterminalisttedbelowawindowwhichishingedatthetop,andwhere
thehingeaxisishorizontal,andthewindowopensoutwards,theterminalshall
be1mbelowthebottomofthewindowopening.
Iftheboileristobelocatedunderstairs,asmokealarmmeetingtherequirements
ofI.S.409orequivalentmustbetted.
Theuemustbeterminatedinaplacenotlikelytocauseanuisance.
For horizontal sections, the outlet system should always be tted on an incline
( 50 mm/m ) sloping down towards the appliance so that no condensation water is able
to accumulate in the outlet system. The chances of icicles forming on the roof outlet is
minimised by causing the condensation water to run back towards the appliance. In the
case of horizontal outlets the inlet system should be tted on an incline sloping down
towards the outside to prevent rainwater from coming in.
Installation and Service Manual Upsilon-Series
26
The appliance produces a white wisp of condensation (pluming). This wisp of condensation
is harmless, but can be unattractive, particularly in the case of outlets in outside walls.
At this time there are 2 different ways of connecting the ue gas/air intake system,
parallel or concentric. See chapter 7.1 and 7.2 how to convert the boiler connection to
the desired option.
ø100mm
A
inm
UB70 Maximumstraightlength100 63
87° bend resistance length -1,8
45° bend resistance length -0,9
UB110 Maximumstraightlength100 35
87° bend resistance length -1,8
45° bend resistance length -0,9
UB140 Maximumstraightlength100 12
87° bend resistance length -1,8
45° bend resistance length -0,9
ø100/150mm
B
inm
UB70 Maximumstraightlength100/150 25
87° bend resistance length -2,6
45° bend resistance length -1,1
UB110 Maximumstraightlength100/150 15
87° bend resistance length -2,6
45° bend resistance length -1,1
UB140 Maximumstraightlength100/150 8
87° bend resistance length -2,6
45° bend resistance length -1,1
Parallelfluesystem
Concentricfluesystem
Maximum ue length for individual ue gas outlet table 7.4.b
100/150 = 350mm
Dismantlement and shorten pipes gure 7.4.b
Example:
An UB 70 with a
concentric ue gas system
ø100/150mm has according
to the table a maximum ue
straight length of 25m In the
system that is going to be put
in there are 2 x 45° bends, so
the maximum ue gas length
is
25 – ( 2 x -1.1 ) = 22.8
meters.
Cutting the concentric pipe goes as follows:
- Take out the inner tube by turning it until it releases from its security position;
- Cut just as much from the air intake part as from the ue gas part;
- Take off the burrs from the cutting edge to prevent cutting the seals;
- Click the pipes back together again.
Use special grease to simplify the tting
When mounting the ue gas system, pay attention to the ow direction. An arrow on the
product points this out. It is not permitted to mount a system upside down and will lead
to complaints.
Refer to table 7.4.b for maximum applicable pipe length.
Installation and Service Manual Upsilon-Series
27
7.5 Collectiveuegasoutlet
Opting for a collective ue gas outlet is determined by:
- The position of the boilers with regard to their outlet area
- Sufcient space above the boilers
- Large number of boilers
You may opt for:
- Collective ue gas outlet under-pressure
- Collective ue gas outlet over-pressure
In many situations, ue gases cannot be vented individually because the installation
is indoors. For such situations, we recommend collective venting by means of under-
pressure or over-pressure using a ue gas outlet system. The air supply may also be
supplied collectively, but if the boiler room is suitable for that purpose (refer to chapter
6.3) it may also be obtained from this area (`open device` Boiler category B).
Inthecaseofcollectiveventingofuegases,theuegas-ventingoutletalways
hastoendupintheopenarea(outletarea1).
A.O.Smith can supply a collective ue gas outlet system for the Upsilon boiler. Refer to
the following chapters with regard to the various possibilities and maximum pipe lengths
that can be used.
0,2 x
2xB
Flue outlet possibilites collective ue gas outlet gure 7.5.a
Boiler category: B
Outlet area 1
(free outlet area)
Boiler category: C
Permittedonlywhentheair
intakeandtheuegas
outletareinthesame
pressurearea
Installation and Service Manual Upsilon-Series
28
7.5.1 Collectiveuegasoutletunder-pressure
Diameter and venting lengths of the ue gas outlet/air supply:
- Open system, with under-pressure
(calculated with thermal draft)
under atmospheric circumstances.
Table 7.5.1.a
Diameter and venting lengths of the ue gas outlet/air supply:
- Closed system, with under-pressure
(calculated with thermal draft)
under atmospheric circumstances.
Table 7.5.1.b
d
d
h
=d
=d
d
d
d
d
h
Output(P)
kWat
80/60°C
70 110 140 h = 2 - 5 h = 5 - 9 h = 9 - 13 h = 13 - 17
152 1 1 210 200 190 190
180 1 1 210 200 190 190
212 1 1 210 200 190 190
240 2 210 200 190 190
272 1 1 1 300 270 260 250
300 1 2 300 270 260 250
332 1 2 300 270 260 250
360 3 300 270 260 250
392 1 1 2 360 330 310 300
424 2 2 360 330 310 300
452 1 3 360 330 310 300
480 4 360 330 310 300
512 1 1 3 440 380 360 340
544 2 3 440 380 360 340
572 1 4 440 380 360 340
600 5 440 380 360 340
632 1 1 4 470 420 400 380
660 1 5 470 420 400 380
692 1 5 470 420 400 380
720 6 470 420 400 380
752 1 1 5 550 470 430 410
784 2 5 550 470 430 410
812 1 6 550 470 430 410
840 7 550 470 430 410
872 1 1 6 600 510 470 440
900 1 7 600 510 470 440
932 1 7 600 510 470 440
960 8 600 510 470 440
Assumptions: Trega-cap on flue outlet, cross-cap on air intake.
In case of open outlet or diffuser pressures will be better.
Tinside, Toutside= + 20C, O2= 4,7%, Trg=50C.
DimensionscascadeflueUpsilon
Opensystem,underpressure
TypeUB d=minimumdiameterØinmm
Output(P)
kWat
80/60°C
70 110 140 h = 2 - 5 h = 5 - 9 h = 9 - 13 h = 13 - 17
152 1 1 240 220 220 220
180 1 1 240 220 220 220
212 1 1 240 220 220 220
240 2 240 220 220 220
272 1 1 1 330 300 290 270
300 1 2 330 300 290 270
332 1 2 330 300 290 270
360 3 330 300 290 270
392 1 1 2 390 370 350 330
424 2 2 390 370 350 330
452 1 3 390 370 350 330
480 4 390 370 350 330
512 1 1 3 460 410 390 380
544 2 3 460 410 390 380
572 1 4 460 410 390 380
600 5 460 410 390 380
632 1 1 4 500 460 440 420
660 1 5 500 460 440 420
692 1 5 500 460 440 420
720 6 500 460 440 420
752 1 1 5 550 500 470 460
784 2 5 550 500 470 460
812 1 6 550 500 470 460
840 7 550 500 470 460
872 1 1 6 600 540 510 490
900 1 7 600 540 510 490
932 1 7 600 540 510 490
960 8 600 540 510 490
Assumptions: Trega-cap on flue outlet, cross-cap on air intake.
In case of open outlet or diffuser pressures will be better.
Tinside, Toutside= + 20C, O2= 4,7%, Trg=50C.
TypeUB d=minimumdiameterØinmm
DimensionscascadeflueUpsilon
Closedsystem,underpressure,parallel
 NOTE!
1.IPX0DatuecategoryB
23
andB
33
Installation and Service Manual Upsilon-Series
29
7.5.2 Collectiveuegasoutletover-pressure
Aninstallationwithacollectiveuegasoutletover-pressureincombinationwith
individuallycontrolledboilers(e.g.0-10Vcontrol),wherenobuscable0310289
isconnected,isNOTallowed.
Diameter and venting lengths of the ue gas outlet/air supply:
- Open system with over-pressure.
Table 7.5.2.a
Diameter and venting lengths of the ue gas outlet/air supply:
- Closed system with over-pressure.
Please contact A.O.Smith.
d
d
h
=d
=d
d
d
d
d
h
Output(P)
kWat
80/60°C
70 110 140
h = 2 - 5 h = 6 - 10 h = 11 - 15 h = 16 - 20
152 1 1
100 100 110 110
180 1 1
120 120 130 130
212 1 1
120 130 130 150
240 2
120 130 150 150
272 1 1 1
150 150 180 180
300 1 2
150 180 180 180
332 1 2
180 180 180 180
360 3
180 180 180 180
392 1 1 2
180 180 180 200
424 2 2
200 200 200 220
452 1 3
200 220 220 220
480 4
200 220 220 220
512 1 1 3
200 220 220 220
544 2 3
220 230 230 230
572 1 4
230 230 250 250
600 5
230 230 250 250
632 1 1 4
230 230 250 250
660 1 5
250 250 250 250
692 1 5
260 260 260 260
720 6
280 280 280 280
752 1 1 5
280 280 280 280
784 2 5
280 280 280 280
812 1 6
280 280 280 280
840 7
280 280 280 280
872 1 1 6
280 280 280 280
900 1 7
280 280 280 300
932 1 7
300 300 300 300
960 8
300 300 300 300
Pa = 50Pa
TypeUB
DimensionscascadeflueUpsilon
Opensystem,overpressure,parallel
d=minimumdiameterØinmm
 NOTE!
1.IPX0DatuecategoryB
23
andB
33
2.Onlywithbuscable0310289connected!
3.Adjustparameter102to2
Installation and Service Manual Upsilon-Series
30
7.6 Condensateventcollectiveuegasoutletsystem
Flue gases condensate inside the outlet system. Anticipate approx. 1 litre of con-
densate per m3 of natural gas spent on heating. The resulting condensate has to be
drained.
Therefore, collective ue gas outlet systems have to be tted with a condensate drai-
nage facility. Using a plastic siphon, the drainage is connected to the sewage system
by means of an open connection. The diameter of the condensate drainage is 40 mm
and may be made of PVC.
The condensate drainage of the ue gas vent system may be combined with the boi-
lers´ condensate pipe work headers.
Drainingcondensatewaterontherainwaterdrainageisnotallowedduetothe
riskoffreezing.
Installation and Service Manual Upsilon-Series
31
8 Electricalconnections
The appliance complies with the CE Machinery Directive 89/392/EEC. The EC Low Voltage
Directive 72/23/EEC and the EC EMC Directive 89/336/EEC.
- A 230V -50Hz mains electrical supply is required fused externally at 6,3A.
- A deviation on the grid of 230V (+10% or -15%) and 50Hz
The installation must continue to comply with:
UnitedKingdom:
- the national rules for electrical installations , IEE regulations.
Ireland:
- the ECTI national rules for electrical installations
The following additional regulations also apply:
- The boiler’s wiring is not allowed to be changed;
- All connections have to be made to the terminal block.
The boiler has 4 terminals for all electrical connections.
1. High voltage supply (230V)
2. Voltage free switches (230V relays)
3. Low voltage sensors
4. Communication bus for cascaded Upsilon boilers
Front view Side view
Terminal 1 Terminal 2 Terminal 3 Terminal 4
0-10Volt
Open-
Therm
On/Off
T3
DHW
230V~
AC
230V
out
230V~
AC
230V
out
L
N
L
N
L
N
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6
Error
signal
Heat
demand
signal
LPG
On/Off
1 2 3 4 5 6 7 8 9 10 11 12 13 14
T10
General
purpose
LWCO
NN
L
230V Pump / 3-WV.
L
230V Pump P3230V out230V~ AC
T4
Out
8X.44.08.00 / 05.11
L
N
230V DHW pump
Bus
8X.44.09.00 / 05.11
gure 7.a
0-10Volt
Open-
Therm
On/Off
T3
DHW
230V~
AC
230V
out
230V~
AC
230V
out
L
N
L
N
L
N
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6
Error
signal
Heat
demand
signal
LPG
On/Off
1 2 3 4 5 6 7 8 9 10 11 12 13 14
T10
General
purpose
LWCO
NN
L
230V Pump / 3-WV.
L
230V Pump P3230V out230V~ AC
T4
Out
8X.44.08.00 / 05.11
L
N
230V DHW pump
Bus
8X.44.09.00 / 05.11
Terminal 1 Terminal 2 Terminal 3
Installation and Service Manual Upsilon-Series
32
1. High voltage supply: 16 Connections
Position Connection Application
PG
Max.
V/A
1, 2, 3 Live Neutral Earth Power for boiler. Power cable not supplied 13,5* 230V
4, 5, 6 Live Neutral Earth Output 13,5
230V
4A
7, 8, 9 Live Neutral Earth System pump P3 13,5
10 Live Three-way valve to CH
13,5
11 Live Three-way valve to DHW or DHW pump P2
12 Neutral Three-way valve or DHW pump P2
13 Earth Three-way valve or DHW pump P2
14 Live DHW load pump P4
13,515 Neutral DHW load pump P4
16 Earth DHW load pump P4
2. High voltage switches: 6 Connections
Position Connection Application
PG
Max.
V/A
1, 2 1 2 Relay output fault signal 13,5
230V
5A
3, 4 3 4 Relay output heat demand 13,5
230V
5A
5, 6 5 6 Relay output external heat source / 2nd propane gas valve 13,5
230V
5A
3. Low voltage sensors: 16 Connections
Position Connection Application Tulles
1, 2 1 2 Hot water sensor T3 IP67
3, 4 3 4 Outdoor sensor T4 (advice) n.a. at 0-10V IP67
5, 6 5 6 Common ow sensor T10** (must be connected) IP67
7, 8 7 8 On-Off contact / Open Therm contact (auto detect) IP67
9, 10 9 10 0 -10 Volt input (temperature or load) IP67
11, 12 11 12 Blocking contact (bridge mounted) IP67
13, 14 13 14 Low water pressure switch off contact NO
(function not active) IP67
* PG glands for cable duct already assembled in the factory. For a few connections, some
PG glands are supplied separately.
The maximum cable diameter for the terminals is 2.5mm
2
Connect the cable by pushing down the control on the terminal strip using a at screw-
driver (refer to g. 8.e).
0-10Volt
Open-
Therm
On/Off
T3
DHW
230V~
AC
230V
out
230V~
AC
230V
out
L
N
L
N
L
N
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6
Error
signal
Heat
demand
signal
LPG
On/Off
1 2 3 4 5 6 7 8 9 10 11 12 13 14
T10
General
purpose
LWCO
NN
L
230V Pump / 3-WV.
L
230V Pump P3230V out230V~ AC
T4
Out
8X.44.08.00 / 05.11
L
N
230V DHW pump
Bus
8X.44.09.00 / 05.11
0-10Volt
Open-
Therm
On/Off
T3
DHW
230V~
AC
230V
out
230V~
AC
230V
out
L
N
L
N
L
N
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 4 5 6
Error
signal
Heat
demand
signal
LPG
On/Off
1 2 3 4 5 6 7 8 9 10 11 12 13 14
T10
General
purpose
LWCO
NN
L
230V Pump / 3-WV.
L
230V Pump P3230V out230V~ AC
T4
Out
8X.44.08.00 / 05.11
L
N
230V DHW pump
Bus
8X.44.09.00 / 05.11
0-10Volt
Open-
Therm
On/Off
T3
DHW
230V~
AC
230V
out
230V~
AC
230V
out
L
N
L
N
L
N
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6
Error
signal
Heat
demand
signal
LPG
On/Off
1 2 3 4 5 6 7 8 9 10 11 12 13 14
T10
General
purpose
LWCO
NN
L
230V Pump / 3-WV.
L
230V Pump P3230V out230V~ AC
T4
Out
8X.44.08.00 / 05.11
L
N
230V DHW pump
Bus
8X.44.09.00 / 05.11
gure 8.b
gure 8.c
gure 8.d
gure 8.e
Installation and Service Manual Upsilon-Series
33
gure 8.f
4. Bus communication: 4-pole connector
Position Connection Application PG
Bus communication cable IP67
The 0310289 bus communication cable mutually connects the cascaded boilers by
4-pole connectors on the side of the connection terminals (2 boilers: 1 cable, 3 boilers:
2 cables etc.) and is tted with 2 IP67 tulles. A maximum of 8 boilers can be connected
to the system.
8.1 Externalcontrols
NOTE: -T10mustbeconnected
-T4isadvicedtoconnect.
The Upsilon boiler provides in many possibilities to operate the boilers from external
controls.
Only1typeofcontrolcanbeconnected.Connectionsoftheexternalcontrolmust
bedoneinthemasterboiler(address01)onterminal3andappropriateconnec-
tions.
Below you will nd a description of the possibilities and parameter adjustments to take
account of.
1. On-Offcontact
An On-Off contact is a volt-free switch to create a heat demand with closed contact.
The On-Off control must be connected to terminal 3, position 7 and 8. This is also the
connection for an OpenTherm-control, but it is self-detecting. No specic adjustments
are necessary. See chapter 9.4 to adjust the ow temperature.
2. OpenTherm-control
An OpenTherm-control is a digital controller which is communicating with the boiler ac-
cording the OpenTherm-protocol. The controller calculates continuously the desired ow
water temperature and sends this to the boiler(s).
The OpenTherm-control must be connected to terminal 3, position 7 and 8. This is also
the connection for an On-Off contact, but it is self-detecting.
After connecting an OpenTherm-control P230 will be visible (Setting level, Param. Chap-
ter, Cascade Param.) where the maximum setpoint CH can be adjusted.
For control option 1 and 2 counts that the boiler controls its own output (modulating) to
achieve the desired temperature. When this is achieved the boiler modulates back to
maintain the desired temperature and prevents over shoot.
If an OpenTherm controller is used, it must be ensured that for certain error
messagestheheatdemandisnotomitted.Thiscan result in complete loss of
heatproduction.
0-10Volt
Open-
Therm
On/Off
T3
DHW
1 2 3 4 5 6 7 8 9 10 11 12 13 14
T10
General
purpose
LWCO
T4
Out
Figure 8.1.a
0-10Volt
Open-
Therm
On/Off
T3
DHW
1 2 3 4 5 6 7 8 9 10 11 12 13 14
T10
General
purpose
LWCO
T4
Out
Figure 8.1.b
OpenThermerrormessages
ThecodingofthetransmittedErrorMessagesonaOpenThermcontrollerisdisplayedasfollows:
(E)EB(E=ErrorCode=Bandboilernumber)
example:ErrorCodeEx02SC02onboiler6willappearas(0)26
Installation and Service Manual Upsilon-Series
34
3. 0-10Volt-control
At a heat demand of the 0-10 Volt controller a signal is sent out and varies from 0-10
Volt. This signal is translated by the Upsilon boiler to a set value (desired ow water
temperature or load) which is send via the data bus to the boiler(s). Depending on the
Voltage the set value becomes higher or lower.
The 0-10 Volt-controller must be connected to terminal 3, position 9 and 10.
The choice for temperature or load control can be done by a parameter setting.
Go to Setting level and Param. Chapter, than to Cascade Param. and select P101.
When P101 is adjusted to 1 the loadcontrol is set. On that moment P205 until P210 in
chapter Cascade Param. is released and can be adjusted according to specic requests.
When P101 is adjusted to 2 the temperaturecontrol is set. On that moment P215 until
P220 in chapter Cascade Param. is released and can be adjusted according to specic
requests.
See chapter 11 for the adjustment possibilities.
ADVICE:Choosefortemperaturecontrolforamorebalancedboilercontrol
Behaviourofconnectedexternalcontrols
- When using an OpenTherm or 0-10Volt control and a clock program is selected, the
clock program of the Upsilon will be ignored.
- When an on/off control is connected and the thermostat is switched on manually before
the pre-setted switch-on time, the clock programm will be ignored and will run on the
set day temperature. When swithing off manually the clock program will be followed.
0-10Volt
Open-
Therm
On/Off
T3
DHW
1 2 3 4 5 6 7 8 9 10 11 12 13 14
T10
General
purpose
LWCO
T4
Out
Figure 8.1.c
Installation and Service Manual Upsilon-Series
35
T1
P1
T2
X11X9X8
X7
X6
X5
X4 X3
X2
X1
X12
6,3A T
6,3A T
X11X9X8
X7
X6
X5
X4 X3
X2
X1
X12
6,3A T
6,3A T
A B
25
A2 B2
P1
T2
A20
A23
A4
A5
A6
B4
B5
B6
B8
B9
A8
T1a
A11
A9
A10
B10
24
30
30
1
A3
B3
26
A21
T1a (HEX4)
B11
B23
B22A22
B7
A7
11 1
20 10
10 1
18 9
8 1 12 1
1
9
1
2
3
11 1
10 1
18 9
8 1 12 1
1
9
1
2
3
11 1
10 1
18 9
8 1 12 1
1
9
1
2
3
20 10
C1 C2 C3
1
1
1
16
14
6
8.2 Wiringdiagram
gure 8.1.a
Installation and Service Manual Upsilon-Series
36
Connection
s
Item Art.nr. Descri
p
tion
Main com
p
onent
s
1 Control unit with scree
n
Burner
A
A2 Control uni
t
A3 Circulation
p
um
p
A4 Fan
A5 I
g
nition unit on
g
as bloc
k
A6 I
g
nition electrod
e
A7 I
g
nition cable
s
A8 Flow sensor T1
A9 Water
p
ressure sensor P1
A10 Return sensor T2
A11 Flow sensor T1
a
Burner B
B2 Control uni
t
B3 Circulation
p
um
p
B4 Fan
B5 I
g
nition unit on
g
as bloc
k
B6 I
g
nition electrod
e
B7 I
g
nition cable
s
B8 Flow sensor T1
B9 Water
p
ressure sensor P1
B10 Return sensor T2
B11 Flow sensor T1a
(
onl
y
HEX4
)
Item Art.nr. Description Conn. Conn. Cont.
0310356
(
S
)
Cable loom XL com
p
let
e
A20 Cable loom
conn.terminal
230V+VF
Conn. C1
1 Main switch
L
2 Main switch
N
3 Earth
4 X1-A en X1-B, X4,
Main switch
3, 1, L'
5 X1-A en X1-B,
Main switch
2, N'
6 Earth
"lee
g
"
C1
3, 9
7 X4
2
8 Main switch
N'
9 C1
6, 13
10 X3
8
11 X3
6
12 X3
7
13 C1
9, 16
14 X3
2
15 X3
1
16 C1
13
X1-A en X1-B,
Earth
1
Conn. C2
1 X4
3
2 X4
4
3 X4
5
4 X4
6
5 X4
7
6 X4
8
A21 Cable loom
conn.terminal LV
Conn. C3
1 X5
1
2 C3
4
3 X5
2
4 C3
2, 6
5 X5
5
6 C3
4, 8
7 X5
12
8 C3
6, 10
9 X5
16
10 C3
8, 12
11 X5
11
12 C3
10, 14
13 X5
14
C3
12
X5
15
X5
1 C3
1
2 C3
3
5 C3
5
8 Bus1
1
9 Bus1
2
11 C3
11
12 C3
7
14 C3
13
15 C3
14
16 C3
9
17 Bus1
3
18 Bus1
4
14
Item Art.nr. Descri
p
tion Conn. Conn. Cont.
A22 Cable loom LV burner
A
X6
1 T1
1
2 T2
1
3 T1a
1
5 P1
1
6 P1
3
7 Fan
p
wm
4
8 Fan
p
wm
2
9 X6
19
11 T1
2
12 T2
2
13 T1a
2
15 P1
2
17 Fan
p
wm
5
18 Fan
p
wm
1
19 X6
9
X11
3 Pum
p p
wm
1
7 Pum
p p
wm
2
X12 Ionisation
B22 Cable loom LV burner
B
See A22
A23 Cable loom 230V
burner
A
X2
1 Fan 230
V
3
Fan 230
V
2
Earth
2 Fan 230
V
1
3 Ignition and
Gasvalve
1
4 Ignition and
Gasvalve
4
Ignition and
Gasvalve
2 Earth
Pum
p
230V
3
Earth
5 Pum
p
230V
2
6 Pum
p
230V
1
7 Ignition and
Gasvalve
3
8 Ignition and
Gasvalve
6
B23 Cable loom 230V
burner B
See A23
24 Cable loom bus Burner
A-B
X8-A X8-B
1 X9 1
2 X9 2
3 X9 3
4 X9 4
25 0310383
(
S
)
Flat cable MM
I
26 0310289 Communication bus
cable U
p
silon
Installation and Service Manual Upsilon-Series
37
9 Boilercontrol
The boiler has a control unit. This control takes care of most of the manual settings but
also provides numerous settings to adjust the control exactly to the installation and user
requirements.
Display
The LCD screen is backlit. The light is activated by pushing one of the buttons.
There are 3 light colours available. The various colours indicate the following:
Blue Basic level
Green Setting level
Red Problem display (ashing)
Having pressed a button, the screen light stays on for 2 minutes (blue screen) or 20
minutes (green screen).
Screen explanation
9 10 11 12 13
1 5
2 6
3 7
4 8
1. CH-program active
2. DHW-program active
3. Clock program active
4. Pump continuously active or pumps active when frost protection is active
5. Boiler off at outside temperature > T-day (when day temperature is active)
or > T-night (when night temperature is active)
6. System pump on
7. Burner on. Starts ashing during ignition, continuous when burner is on
8. Chimney sweep function (100% power for emission measurement)
9. Boiler address:
1 = Cascade Master
2.8 = Cascade Slaves
10. Identication burner inside boiler
11. Night temperature active
12. Day temperature active
13. 2 text lines with 8 characters each
A B C D
E F G H
Boiler symbols are not visible in case of a single boiler
or when no bus communication cable is connected
(Message code M024sc08).
Installation and Service Manual Upsilon-Series
38
9.1 Operationalstatus
- Standby Standby. Boiler is ready for operation.
- Vent.Phase Ventilation stage
- Ignitionphase Ignition stage
- BurnerlitCH Burner active for heating
- BurnerlitDHW Burner active for hot water
- CHT>Tset Burner off on account of too high ow temperature CH
- OverrunCH Overrun time pump over CH
- OverrunDHW Overrun time pump over DHW
- Service Boiler needs maintenance. Contact installer
- Frost Burner active for frost protection
9.2 Operation
The keyboard consists of a logical key allocation for menu control, conrmation, and
correction and emission measurement.
Value increase / change
Emission measurement Return/correction
Backward Forward
Reset* Conrm selection
Value decrease / change
* Reset only functions in case of an Error or Message. If reset is rapidly pressed over a
short period of time, the device will block completely. Only loss of power (power switch)
will restart the device completely. Recommendation: First identify the fault by nding the
fault code in the fault-code list in the problem-shooting chapter and solve the problem.
The main switch is located on the right hand side of the keyboard. This switch controls
the 230V power supply (L and N).
Standby
R
OK
-
+
R
OK
-
+
0-10Volt
Open-
Therm
On/Off
T3
DHW
230V~
AC
230V
out
230V~
AC
230V
out
L
N
L
N
L
N
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6
Error
signal
Heat
demand
signal
LPG
On/Off
1 2 3 4 5 6 7 8 9 10 11 12 13 14
T10
General
purpose
LWCO
NN
L
230V Pump / 3-WV.
L
230V Pump P3230V out230V~ AC
T4
Out
8X.44.08.00 / 05.11
L
N
230V DHW pump
Bus
8X.44.09.00 / 05.11
Installation and Service Manual Upsilon-Series
39
Set time
00:00
Good
we 10:17
DD-MM-YY
01-01-00
OK
-
+
OK
-
+
9.3 Commissioning
Turn the electrical supply on (heating system does not have to be lled);
During start-up, a blue screen is displayed:
NC Power Up (= start-up screen)
Please wait (under certain circumstances)
Then you see: Address (= allocation of boiler address)
01
In the case of a cascade installation: Select the correct address and press OK
Select for the rst boiler 01 (=Master), for the next 02, 03 etc (=Slave)
The address can be changed by pushing the + button (increase value) and the – button
(decrease value). Once the + or – buttons has been pushed, the value starts ashing.
In the case of a single boiler: Conrm address 01 by OK
The display shows: Time Set (= setting actual time)
00:00
Setting time and day is only required on the Master-boiler. The Slave-boiler will take the
time and day settings automatically.
First set the hours using + and -.
Press the "right arrow” button to move to the minutes.
Set the minutes using + and -.
Conrm by OK
The display shows: DD-MM-YY (= setting actual date)
01-01-00
Change the settings using the + and – button. Jump from DD to MM and YY using the
arrow button.
After conrmation by OK and after the automatic de-aeration programm has ended,
you will see the standard read-out “Good” showing the date and the time after the de-
aerating program.
Standard read-out: Good
we 10:17
Good indicates that the boiler operates normally (burner on or off)
wo 10:17 indicates the actual day and time.
Following a restart (after loss of power):
Following a brief loss of power, the control will start-up as described above, but all set-
tings are retained.
In the case of a loss of power lasting more than 2 hours the time and date has to be
setted again. All other settings are retained.
If the water pressure is below 1.0 bar, the screen will show: FILL. Please refer to the
chapter Filling CH-system.
Address
01
-- NC --
Power Up
OK
-
+
OK
-
+
Installation and Service Manual Upsilon-Series
40
Thestandardread-outoffers3informationscreens.
Switching to different screen scan be found using the + or - button
1. "Good"- read-out Good with actual day and time (see above)
2. Operational status Refer to chapter 9.1 for explanation of texts
3. Technical read-out Actual water ow temperature. (T1 in °C)
and water pressure (P in bar).
ForUpsilonboilersincascade
For Upsilon boilers in cascade, the bus communication cables between the boilers must
be connected (see section electrical connections).
The master-boiler (address 01) should be set to how many boilers are actually connected.
From the standard display with illuminated display (blue):
1. Press 2 seconds the arrow keys simultaneously (green display);
2. Use the right arrow button until: Param Mode;
3. Press the OK button; Cascade param. is shown;
4. Press the OK button again;
5. Push the right arrow key until P114;
6. Press the OK button;
7. Press the + key until the total number of boilers in cascade:
8. Press the OK button;
9. Press the return key until standard read-out
SwitchingontheHeating,DHWandPumpprogram
By switching on the functions (
, and/or ) the boiler is turned on.
Proceed as follows:
From the standard display with illuminated display:
1. Press the right arrow button:
The display shows: Basic settings;
2. Press the OK button;
3. Press the right arrow button:
The display shows: CH prog off;
4. Press the + button:
The display shows: CH prog on;
5. Press the OK button;
6. Repeat the procedure from point 3.
In this way the functions DHW and Pump can be switched on.
7. Press the return button to go back to the standard display.
Depending from the programs that are switched on the corresponding symbols will be
shown.
Standby
Good
we 10:17
20.0 °C
1.65 bar
1
2
3
OK
-
+
OK
-
+
Param
Mode
Cascade
paramtr
P114
1
Basic
Settings
CH prog
off
CH prog
on
CH DHW Pump
Installation and Service Manual Upsilon-Series
41
9.4 SettingthemaximumowwatertemperaturewithOn/Off-control
P101 = 0
Setting the maximum ow water temperature with connected outdoor sensor T4 (starting
with illuminated display):
1. Press the right arrow button:
The display shows: Basic Settings;
2. Press the OK button;
3. Press the right arrow button until CH temp:
The display shows: CH temp 85°C;
4. Press the + or - button to adjust the desired ow temperature and press the OK but-
ton.
Setting the maximum ow water temperature without outdoor sensor T4 (starting with
illuminated display):
1. Press the right arrow button until Timeprog-options;
2. Press the OK button;
3. Press the right arrow button until Timeprog CH;
4. Press the OK button;
5. Press the right arrow button until Day Temp;
6. Press the OK button;
The display shows: T_day
7. Press the + or - button to adjust the desired ow temperature and press the OK but-
ton.
Basic
Settings
CH temp
85 °C
Timeprog
options
Timeprog
CH
Day
Temp
T_day
85 °C
Installation and Service Manual Upsilon-Series
42
Vent
Prog.
OK
-
+
OK
-
+
9.5 Fillingtheheatingsystem
When all boilers have been electrically commissioned as described above, then the
heating system can be lled. Each boiler is tted with a lling and drain valve. The lling
hose from the water tap is then connected to it.
Filltheheatingsystemonlywithdrinkingwater.RefertotheWaterQualitychapter
forqualityrequirementsofthellingwater.
Waterpressure
Screen display
Good
Read-out
Operation
status
Technical
read-out
Description Action
FILLdd
00:00
FILL
Bx12sc03
xx.x°C
P0,0
Water pressure is 0 bar, boiler off Top up water
FILL
dd 00:00
FILL
Bx12sc03
xx.x°C
P>0,7
Water pressure above 0.7 bar. The boiler
is off. The automatic venting program
starts
Top up water until
approx. 1,7 bar
Block.
dd 00:00
Vent
Prog.
xx.x°C
P>1,2
Automatic venting program, afterwards
(approx. 13 min.) boiler is on standby
Top up water until
approx. 1,7 bar
Good
dd 00:00
(variable)
xx.x°C
P>1,0 <4,0
Water pressure is good. Boiler standby or
in normal operation
None
Block.
dd 00:00
xx.x°C
P>4,0
Water pressure too high, boiler off due to
blocking
Drain water until
approx. 1,7 bar
Good
dd 00:00
(variable)
xx.x°C
P<3,7
Water pressure is good. Boiler operates
normally again
None
Message/
Block.
dd 00:00
FILL
Message
Mx24sc14
xx.x°C
P<1 >0,7
Water pressure too low. Boiler is limited
to 50% load
Top up water until
approx. 1,7 bar
Ventingprogram
When, on lling the system, the water pressure rises above 0.7 bar, the venting program
will start automatically. The program lasts approx. 13 minutes and in doing so, turns
the pump on and off and, if tted, the three-way valve every 80 seconds to remove the
remaining air from the boiler. All venting points still have to be vented when lling the
installation. The boiler will be on standby after the venting program.
Theautomaticventingprogramonlyventstheboilerandnottherestoftheinstal-
lation.
Read-out 1 (Good status) displays Block. with actual day and time on the screen.
Read-out 2 (operational status) displays Vent Prog on the screen. [From Good press
the – button 1x: Vent Prog is now displayed]
Interrupting the venting program (not recommended) is only possible from the setting
level by pressing OK during the venting program.
For boiler checks please refer to the chapter Checks prior to commissioning.
For any checks or setting changes, refer to the Basic Settings chapter.
FILL
Block.
we 10:17
Installation and Service Manual Upsilon-Series
43
10 Basicsettings
Menu structure
There are 2 setting levels
1. Basic level (manager/user) Blue screen
2. Setting level (Installer): Green screen
Withtheilluminationswitchedoff,rstpressononeofthebuttonstoswitchthe
illuminationonandthencontinuewiththesetting.Havingpressedthelastbutton,
theblueilluminationwillswitchoffafter2min.
Menu structure at Basic level
Good
Operational status Basic setting Timeprog. options Param Mode Info
Tech. Read-out
CH prog Set Date and time Boiler param Cascade
DHW prog Timeprog. CH Other
Pump prg. Timepr. DHW
Timepr. CH
Timep. DHW
CH temp
DHW temp
Units
Language
Restore Defaults
Refer to the Parameters chapter for all parameters and related settings.
With the arrow buttons
you can go through the
different chapters.
Press OK to select or to
conrm a change.
With the + and - button
you can increase or
decrease a selected
value.
Back to previous screen
or standard read out:
Press this ‘return-button’.
Remark: Depending which
parameter settings are set, some
options will not be displayed.
Clockprogram(fromstandardswitchedoffinBasicsettings)
The switch times in the pre-set clockprograms are detailed in
the table on the right. Each clock program can be adjusted to
each indivdual situation. Conditions are:
- Maximum 4 switch points per day;
- Settngs for day and night are determined by the settings:
Time pr. options/Time prog. CH/Day Temp. and Night
temp.;
- The setting OFF switches the heating off during the whole
set period. The frost protection is active;
- Setting - - - turns the switch point OFF;
- Switch times can be set in steps of 30 minutes.
Advice:
Keep in mind when setting the switching periods for domestic
hot water that it is sufciently long to ensure that hot water is
always available during actual use. In most cases, the pre-set
program 1 of the clock program sufces.
Behaviourofconnectedexternalcontrols
- When using an OpenTherm or 0-10Volt control and a clock
program is selected, the clock program of the Upsilon will
be ignored.
- When an on/off control is connected and the thermostat
is switched on manually before the pre-setted switch-on
time, the clock programm will be ignored and will run on
the set day temperature. When swithing off manually the
clock program will be followed.
Day
Switch
point
Time Setting Time Setting Time Setting
1 7:00 day 8:00 day 3:00 on
2 18:00 night 12:00 night
3 17:00 day
4 19:00 night
1 7:00 day 8:00 day
2 18:00 night 12:00 night
3 17:00 day
4 19:00 night
1 7:00 day 8:00 day
2 18:00 night 12:00 night
3 17:00 day
4 19:00 night
1 7:00 day 8:00 day
2 18:00 night 12:00 night
3 17:00 day
4 22:00 night
1 7:00 day 8:00 day
2 18:00 night 12:00 night
3 17:00 day
4 19:00 night
1 8:00 day
2 12:00 night
3 17:00 day
4 19:00 night
1
2
3
4 3:00 on
Pre-setclockprograms
CHpre-set1 CHpre-set2 DHWpre-set1*
4 switch points per day, adjustable per 30 min.
mo
* The clock program for domestic hot water is set on continuous demand to prevent there being no hot
water available at starting up. The program can be adjusted to each individual situation.
tu
we
th
fr
sa
su
Installation and Service Manual Upsilon-Series
44
MenustructureatSettinglevel
Withtheilluminationswitchedoff,rstpressononeofthebuttonstoswitchthe
illuminationonandthencontinuewiththesetting.Havingpressedthelastbutton,
thegreenilluminationwillswitchoffafter2min.
From the standard read-out, keep both arrow buttons pushed down simultaneously for
2 sec. The screen colour will change from blue to green.
Good
Operational status
Tech. Read-out
2 sec.
Good
Operational status Basic setting Timeprog. options Param Mode Service Mode Error Info
Tech. Read-out
CH prog Set Date and time Cascade param Throttle Error Burner A Cascade
DHW prog Timeprog. CH Boiler param Airush Boiler
Pump prg Timeprog. DHW
Burner A Param
Pump speed Burners
Timepr. CH
Burner B Param
3-way valve Other
Timep. DHW Pump P2
CH temp Pump P3
DHW temp Pump P4
Error Burner B
Units LPG
Language Fault
Restore Defaults Heat demand
Boiler address
Reset Counters
Refer to the Parameters chapter for all parameters and related settings.
Error 01
Error 02
....
Error 10
With the arrow buttons you can go through the different chapters.
Press OK to select or to conrm a change.
With the + and - button tou can increase of decrease a selected value.
Back to previous screen or standard read out: Press this ‘return-button’.
Remark: Depending which
parameter settings are set, some
options will not be displayed.
Heating line (K-factor) Grac 11.a
Outdoor temperature in °C
Flow temperature in °C
0.2
0.5
1
1.5
2
Installation and Service Manual Upsilon-Series
45
11 Parameters
For operation and menu overview, refer to chapter Boiler control and Basic settings.
Basicsettings Basicsettings
PARA
factory
setting
Description Range
CH prog off CH-program on/off
DHW prog off DHW-program on/off
Pump prg off Pump program (frost protection) on/off
Timerpr CH off Clock program CH on/off
Timerp DHW off Clock program DHW on/off
CH temp 90
Adjusted maximum flow temperature in °C
(only active with connected outdoor sensor & P101=0)
10-90
DHW temp 65 Adjusted maximum DHW temperature in °C (only visible when DHW is activated) 10-80
Units SI Selection possibility units SI=Europe, Imp(erial)= USA SI/Imp
Language GB Language selection
GB, NL, I, D, F,
PL, TR, DK, E
Restore defaults Reset of the factory settings (dependant of selected level)
Timeprogoptions Clockprogramoptions
PARA
factory
setting
Description Range
Setdateandtime
Set Time 00:00 Actual time setting in hours and minutes
Set Date DD-MM-YY Actual date setting day-month-year
Daylight saving Europe Zone for daylight saving Off-Eur-USA
12/24hrs 0-24h 12-hour (AM/PM) or 24-hour display AM/PM-24h.
Date format DD-MM-YY Reproduction of date display (DD-MM-YY, MM-DD-YY, YY-MM-DD)
TimeprogCH (only visible when NOT OpenTherm or 0-10V)
Day temp T-day 20
Day temperature according heating line in °C
(if outdoor sensor is NOT connected: max flow temp.)
10-30
(10-90)
Night temp T-night 15 Night temperature according heating line (Eco) in °C 10-30
Select Preset Preset 1 Choice for the preselected time programm CH 1 or 2
Adjust Timeprog
mo1 off
03:00
See table time programs CH
It is possible to select 4 switch moments (steps of 30 min.) per day.
Choice: day temperature, night temperature, off, - - -
Copy function to next day: after switch moment 4.
Store Preset Store of the adjusted time program for CH
TimeprDHW(only visible when NOT OpenTherm)
Select Preset Preset 1 Choice for the preselected time programm DHW 1 or 2
Adjust Timeprog
mo1 off
03:00
See table time programs DHW
It is possible to select 4 switch moments (steps of 30 min.) per day.
Choice: on, off, - - -
Copy function to next day: after switch moment 4.
Store Preset Store of the adjusted time program for DW
Installation and Service Manual Upsilon-Series
46
ParamMode Parameterchapter
PARA
factory
setting
Description Range
Cascadeparam.
Cascade parameters
P100 0 Domestic hot water facility 0-8
0: no DHW
1: Solo boiler with 3-wa
y
valve
2: n.a.
3: Solo boiler with c
y
linder loadin
g p
um
p
P4 and 3-wa
y
valve
4: n.a.
5: After low loss header: DHW after LLH with c
y
linder
p
um
p
P2 and P3=of
f
6: After low loss header: DHW after LLH with c
y
linder
p
um
p
P2 and P3=on at heat demand CH
7: After low loss header: DHW loadin
g
s
y
stem after LLH with c
y
linder loadin
g p
um
p
P2, P4 and P3=of
f
8: After low loss header: DHW loadin
g
s
y
stem after LLH with c
y
linder loadin
g p
um
p
P2, P4 and P3=on at heat demand CH
P101 0 Heating 0-3
0: 0÷10V not active
1: 0÷10V= load control (see further P205 until 210)
2: 0÷10V= temperature control (see further P215 until 220)
3: Showroom position
P104 0 Outside sensor T4 0-1
0: autodetect
1: connected
P105 0 Common flow sensor T10
0-1
0: autodetect
1: connected
P106 30 Min. Setpoint T10 0-60
P107 0 Min.Setpoint function T10 0-2
0: off
1: minimum value setpoint at heat demand CH
2: continuously minimum value setpoint
P109 0 Correction outside sensor -5 - 5
P111 20 CH-set gradient-reference 0-60
P112 1,0
CH-set gradient in °C/10sec in steps of 0,1°C
0-10
P114 1 Number of boilers in cascade (To be set manually!)
1-8
P121 1 Relay function Propane/External heating source 0-1
0: Onl
y p
ro
p
ane
1: On/Off external heatin
g
source
P125
1
DHW i it
0 1
NOTE:
Option 6 and 8 not for Low Temerature
systems, unless separately controlled
ADVICE for using 0-10V:
Choose option 2 for a balanced
behaviour of boiler control.
P125 1 DHW priority 0-1
0:No
1: Yes
P157 0 OpenTherm error bit selection 0-2
0: Onl
y
error
s
1: Errors and blockin
g
s
2: Errors, blockin
g
s and messa
g
e
s
P158 0 Error relay selection 0-2
0: Only error
s
1: Errors and blockin
g
s
2: Errors, blockin
g
s and messa
g
e
s
P170 90 Switch on moment relay external heating source 0-100%
When demand is higher then adjusted value the external heating source will be switched on
P171 85 Switch off moment relay external heating source 0-100%
When demand is lower then adjusted value the external heating source will be switched off
P203 2 Overrun time secondary pump P3 in minutes 0-60
At P101 = 1 (Load control):
P205 2
0-10V, load voltage to have minimum heat demand (P208 power) (If P101=1)
0-10
P206 9,5
0-10V, load voltage to have maximum heat demand (P207 power) (If P101=1)
0-10
P207 100%
0-10V, load maximum power (dynamic range) (If P101=1)
0-100
P208 0%
0-10V, load maximum power (dynamic range; 0% is minimum power) (If P101=1)
0-100
P209 1
0-10V, load heat demand when input voltage> (If P101=1)
0-5
P210 0,5
0-10V, load no heat demand when input voltage< (If P101=1)
0-5
At P101 = 2 (Temperature control):
P215 2
0-10V, load voltage to have minimum heat demand (If P101=2)
0-10
P216 9,5
0-10V, load voltage to have maximum heat demand (If P101=2)
0-10
P217 1
0-10V, load heat demand when input voltage> (If P101=2)
0-5
P218 0,5
0-10V, load no heat demand when input voltage< (If P101=2)
0-5
P219 30
0-10V, temperature setpoint at minimum input voltage (If P101=2)
10-90
P220 85
0-10V, temperature setpoint at maximum input voltage (If P101=2)
10-90
P252 2 Slope heating line (K-factor) 0,1 - 9,9
P256 2 Hysteresis Summer/Winter in °C (if T4 was detected) 0-10
P266 2 Switch on delay at heat demand in minutes 0-10
P267 168 Boiler sequence for boilers in cascade in hours 1-255
P283 1 Frost protection 0-1
0: T10 and P3 not active
1: T10 and P3 active
1
:
T10
an
d P3
ac
ti
ve
P284 -5 Switch on temperature frost protection in °C -40 - 20
Installation and Service Manual Upsilon-Series
47
Boilerparam
Boiler parameters
P100 0 Domestic hot water facility (visible when boiler address is 2 - 8) 0-4
0: no DHW
1: Solo boiler with 3-wa
y
valv
e
2: n.a.
3: Solo boiler with c
y
linder loadin
g p
um
p
P4 and 3-wa
y
valve
4: n.a.
P102 0 Cascade flue gas system 0-3
0: Flue
g
as s
y
stem individual or collective under
p
ressure
1: N.a.
2: Flue gas system collective over pressur
e
3 N.a.
P108 0 Kind of gas 0-1
0: natural ga
s
1: propane ga
s
P122 0 DHW temperature sensor T3 0-1
0: autodetec
t
1: connected
P123 30 Switching time 3-way valve in seconds 0-255
P125 1 DHW priority 0-1
0: No
1: Yes
P132 1 Pump continuously 1-2
1:Unit
p
um
p
P1
2 Unit
p
um
p
P1 and installation
p
um
p
P
3
P154 100% Maximum load CH 0-100
P155 100% Maximum load DHW 0-100
P160 100% Maximum pump capacity (only with modulating circulation pump) 30-100
P179 1 Overrun time cylinder pump P2/P4 in minutes (if P100 > 1) 0-60
P181 5 Minimum cool down DHW temperature in °C (if P100 > 0) 0-15
P182 1 Load adjustment due to temperature fall DHW in °C/10sec. (if P100 > 0) 0-10
P183 65 DHW Anti legionella temperature (if P100<>0 and P122=1) in °C 10-80
P184 7 DHW Anti legionella service timer (if P100<>0 and P122=1) in days 1-30
P185 3:00 DHW Anti legionella time of day (if P100<>0 and P122=1) 0:00-23:50
P190 80 Flow temperature T10 at DHW in °C (using cylinder thermostat) (if P100 > 0) 10-90
P801 0% Local altitude compensation and flue length 0-15%
BurnerAparam
Burner A parameters
When the boiler has 2 heat exchangers Burner B will follow with the same parameters
When the boiler has 2 heat exchangers Burner B will follow with the same parameters
P953
HEX4: 65%
HEX2: 80%
Minimum pwm-level pump (only with modulating pump). 43-100%
Servicechapt.
Service chapters
Choose burner AB, A or B after selecting one of the functions using arrow buttons. Exchanger
symbol will show: AB, A or B
AB-A-B
Throttle 0
Manually burner control.
Press OK, then + and - button to increase/decrease the value (0=off, 1%=low load untill 100%=full
load)
0-100
Airflush 0
Manually fan control
Press OK, then + and - button to increase/decrease the value
0-100
Pumpspeed. 43 Minimum pump speed (only with modulating circulation pump) 43-100%
3-way valve / P2 CH
Manually control of the 3-way valve for DHW.
Only for boilers with DHW via 3-way valve
CH-DHW
(at P2: on-off)
Pump P3 off
Manually control of the system pump P3. (Only when pump is off)
When 'On' pump symbol will be displayed
on-off
Pump P4 off Manually control of the DHW pump P4 on-off
LPG off Manually control of LPG valve (Volt-free) on-off
Fault off Manually control of fault relay for external error signal (Volt-free) on-off
Heat demand off Manually control of heat demand relay for external display heat demand (Volt-free) on-off
Boiler on-off off
Manually control of external heating source. On-off contact for control external heating source (not
visible in case of LPG)
on-off
Boiler address Adjusting/changing boiler address 01-08
Reset Counters Reset of counters after maintenance interval
Installation and Service Manual Upsilon-Series
48
Error Errors
A-B
Error burner A
The last 10 errors with data will be stored.
Choose burner A or B using arrow buttons. Exchanger symbol will show: A or B
Error 01
Select other error number (02-10) with arrow buttons
Every error contains the following info (Press + button for forward, - button for backward)
Code Exxscxx
Date
Time
Operational status
T1 flow temperature
T2 return temperature
T1a secondary flow temperature
P1 water pressure
P2 cylinder pump
P3 system pump
P4 cylinder load pump
Damper on/off (no function)
Fan on/off
Gas valve open/closed
Ignition on/off
Info Information
Cascade
Information of cascade system
T3 xx.x°C DHW temperature T3 in external cylinder in °C (if connected and P100 is selected for DHW)
T4 xx.x°C Outdoor temperature T4 in °C (if connected)
T10 xx.x°C Temperature T10 sensor in low velocity header in °C
OT sp x.x°C OpenTherm setpoint room temperature in °C (visible when OT is selected)
Req Load xx% Requested load of the cascade system in %
Req Temp xx.x°C Actual requested flow temperature according gradient line of the cascade system in °C
Req Temp xx.x°C End value of the requested flow temperature of the cascade system in °C
Error off Status relay external error signal on-off
P3 off Status system pump P3 on-off
P4 off Status cylinder loading pump P4 on-off
Heatdmnd. off Heat demand
y
es/no on-off
+
Heatdmnd.
off
Heat demand yes/no
on off
LPG / Extra B off Status relay external heating source on-off
Boiler
Information of the boiler
T1-ave xx.x°C Actual average flow temperature of the boiler in °C
T2-ave xx.x°C Actual average return temperature of the boiler in °C
T3 xx.x°C DHW temperature T3 in external cylinder in °C (if connected and P100 is selected for DHW)
Req Load xx% Requested load of the boiler in %
Req Temp xx.x°C Requester flow temperature of the boiler in °C
3WV closed Status 3-way valve open-closed
P2 off Status DHW pump P2 on-off
P4 off Status cylinder loading pump P4 on-off
BurnerA
Information of burner/heat exchanger A
Select burner A or burner B using + and - button. Symbol heat exchanger will show: A or B
A-B
T1 xx.x°C Actual flow temperature
T1a xx.x°C Actual flow temperature secondary sensor
T2 xx.x°C Actual return temperature
Req Load xx% Requested load in %
Flame x.xx uA Actual ionisation in µA
Water Pr x.xx bar Actual water pressure
FanSpeed xx Actual fan speed in revolutions per minute
Fan PWM x.x% Actual fan capacity in %
Fan off Status fan on-off
Gas off Status gas valve on-off
Ign. off Status ignition on-off
P1 PWM x.x% Actual pump speed in % (only with modulating circulation pump)
P1 off Status pump on-off
Others
Select burner A or burner B using + and - button. Symbol heat exchanger will show: A or B A-B
Stand-by xx h Number of hours stand by
Burn ON xx h Number of running hours with burner on
Service xx h Number of running hours to go for maintenance interval
Ignition xx Number of times ignition
Faults xx Number of times in error
Safety
02017005
S
a
f
e
t
y
02017005
Regul. 01017016
MMI 03017017
OEM par. 00017xxx xxx: 020 = UB70, 080 = UB110, 140 = UB140
Installation and Service Manual Upsilon-Series
49
11.1Activatefactorysettings
Do the following to reactivate factory settings (any changed settings will be lost):
Activatingthefactorysettingsfromuserlevelonly:
From the standard blue screen display:
1. Select using the right arrow button: Basic settings;
2. Press the OK button;
3. Press the right arrow button until: Restore Defaults
4. Press OK
Screen displays: Restore OK
5. Press OK again
Screen displays: Restore Defaults
This has now restored the factory settings.
Activatingthefactorysettingsfrominstallerlevel:
From the standard blue screen display:
1. Press down the arrow buttons simultaneously for 2 seconds;
2. Continue with the same instructions from point 1 to 5 described above.
The procedure can take about 20 seconds and shows a blank screen followed by the
text Please Wait.
12 Putoutofoperation
In some cases it might be necessary to put the complete boiler out of operation. The
boiler is put out of operation by switching off the three functions (
, and/or ).
Proceed as follows:
From the standard blue screen display:
1. Press the right arrow button:
Screen displays: Basic setting;
2. Press OK;
Screen displays: CH prog on;
3. Press the - button:
Screen displays: CH prog off;
4. Press OK;
5. Repeat procedure from point 3 onward.
This switches off the functions DHW prog and Pump prog respectively.
6. Press the return button to return to the standard display.
A.O.Smith recommends leaving the power switch switched on to ensure that the boiler
pump(s) and three-way valve (if tted) are automatically activated to prevent them from
sticking. The frost protection remains active. Leave gas valve open.
Iffrost,duringtheperiodwhentheboilerisoutofoperation,islikely,thenyouare
advisedtoremovethepowerfromtheboileranddraintheboiler(s)andinstallation.
Inthiscase:closealsothegasvalve.
Restore
Defaults
Confirm
Restore
Installation and Service Manual Upsilon-Series
50
13 Inspectionandmaintenance
Boiler maintenance is only to be carried out by qualied staff with calibrated
equipment.
WhenreplacingsparepartsonlyoriginalA.O.SmithServicepartsaretobeused.
PleasecontactA.O.Smith.
13.1Maintenanceintervals
Maintenance has to be carried out after 16,000 operational hours max. or every 4 years,
whatever comes rst.
Depending on the intensive use of the device, maintenance intervals will have to be
decreased accordingly. For other situations, maintenance intervals may also have to be
decreased. In such cases, please contact A.O.Smith for additional advice.
Inspection and maintenance tasks have to be carried out in accordance with the main-
tenance instructions at all times. Some tasks are described in these maintenance instruc-
tions. For complete inspection and maintenance instructions, please contact A.O. Smith.
Whencarryingoutmaintenanceontheboiler,thegastaphastobeclosedand
securedagainstopening.
The housing has to be removed in order to carry out maintenance jobs on the boiler. The
housing has been secured by 4 quick-lock nuts. First, remove the screws from the quick-
locks, open the quick-locks, lift up the housing from below and move it away to the front.
13.2Checkspriortocommissioning
Changing settings such as burner pressure and setting the amount of air is not necessary.
Only in the case of failures or replacement of the gas unit, venturi and/or ventilator, does
one have to check and adjust the zero-pressure control and O
2
percentage accordingly
(Refer to Help reference).
Followingmaintenancetasksalwayscheckall gas-conducting components on
leakagesbyuseofleakagedetectionspray.
Removing housing gure 13.1.a
Installation and Service Manual Upsilon-Series
51
13.2.1 Emissioncheck
In order to be able to check on the boiler’s emission during its years of operation, it is
recommended to measure the maximum air displacement of the boiler on commissioning.
This value may be different for each boiler type.
This measuring is only worthwhile if the value is known on commissioning.
The following tasks have to be carried out to enable measuring this value:
- Press down the arrow buttons simultaneously for 2 seconds.
The screen turns green;
- Press the right arrow button until you see Service chapter.;
- Press OK;
- Press the right arrow button until Airush is displayed;
- Press OK;
The screen displays Airush off;
Only for UB 110 and UB 140:
- Press the right arrow button to select burner A.
The exchanger symbol displays the selected burner (AB, A or B)
- Open the top test nipple (g. 13.2.1.a);
- Connect the hose of the digital pressure meter to the top test nipple of the gas unit
Measuringisonlyallowedusingthetoptestnipple(refertoarrow).
- Press on the + button until the maximum value (100%).
The ventilator will start running up to its max. revolutions per minute RPM (burner
stays on)
- Measure the under-pressure and record the value.
During the next boiler check, the under-pressure value may have decreased by 20%
max. compared to the value on commissioning. If this value has decreased less than
20% the boiler does not require any maintenance.
- Press the – button until off is displayed (keep pushed down)
This ends the procedure for burner A.
Only for UB 110 and UB 140:
- Press the return button 1x
- Press the right arrow button to select burner B.
The exchanger symbol displays the selected burner (AB, A or B)
Repeat the procedure for burner B.
- Press the return button to return to the original read-out.
Measuring point air ow gure 13.2.1.a
OUT: 0-pressureadjustment
MIN: Gaspressure
Installation and Service Manual Upsilon-Series
52
13.2.2 CheckO
2
TheO
2
percentageissetbythefactory.Ithastobecheckedduringinspection,
maintenanceandfaults.
It can be checked as follows:
- Ensure that the boiler is at maximum load and can dump the heat generated;
- Press down the arrow buttons simultaneously for 2 seconds.
The screen turns green;
- Press the right arrow button until you see Service chapter.;
- Press OK;
The screen displays Throttle;
- Press OK;
The screen displays Throttle off;
Only for UB 110 and UB 140:
- Press the right arrow button to select burner A.
The exchanger symbol displays the selected burner (AB, A or B)
- Calibrate the O
2
meter ;
- Position the lance of the O
2
meter into the ue outlet test point (refer to g. 13.2.2.a);
- Press on the + button until the maximum value (in kW) has been reached;
The boiler will be burning at the rated full capacity (value on display in %)
- Leave measuring O
2
to the measuring equipment.
Naturalgas Propane
- O
2
percentageatfullload= 4,7%(-1,2%,+0,8%) 5,1%(-1,2%,+0,7%)
CO
2
percentageatfullload= 9,0%(-0,4%,+0,6%) 10,3%(-0.4%,+0.8%)
- If required, you may turn the setting screw to set the correct O
2
percentage.
(refer to g. 13.2.2.b).
Finally,theO
2
percentageatlowloadmustbechecked:
- Press on the - button until the value1 has been reached.
The boiler will be burning at low capacity (value on display in %).
- Leave measuring O
2
to the measuring equipment and check if the measured O
2
percentage on low load is between following values:
Naturalgas Propane
- O
2
percentageatlowloadbetween 5,0%and7,0% 5,1%and7,0%
CO
2
percentageatlowloadbetween 7,7%and8,8% 9,1%and10,3%
Contact A.O. Smith when the measured values is outside this range.
End of measuring:
- Press the – button until off is displayed (keep pushed down).
This ends the procedure for burner A.
Only for UB 110 and UB 140:
- Press the return button 1x
- Press the right arrow button to select burner B.
The exchanger symbol displays the selected burner (AB, A or B)
Repeat the procedure for burner B.
- Press the return button to return to the original read-out.
Measuring point gure 13.2.2.a
adjusting screw gure 13.2.2.b
Installation and Service Manual Upsilon-Series
53
13.3Maintenanceactivities
The following actions have to be taken in order to be able to carry out maintenance:
- Switch the device off using the mains switch,
- close the gas tap;
Refer to gure 13.3.a:
- Unscrew the 4 screws of quick-locks A, B, C and D
- Open the 4 quick-locks A, B, C and D and remove the housing (= air box) from the
front.
Dismantle the internal ue gas pipe as follows (refer to g. 13.3.b):
- Unplug the ue gas sensor if tted;
- Press the 2 clips of the siphon adapter (F) and push that part of the ue gas vent pipe
(E) down. Leave the siphon adapter (F) hanging on the bottom plate
- Slide the slider (G) in the upper part of the ue gas pipe upward.
- Pull the ue gas pipe (E) forward (both exchangers simultaneously).
Ventilationunitandburnercassette(refertog.13.3.candd)
- Remove the plug connections of the gas valve (1) and ventilator (2);
- Unscrew the coupling (3) of the gas unit;
- Replace the gas valve gasket with a new one;
- Unscrew the front cross-slotted screw (4) of the air suction damper (5);
- Loosen the left (9) and right (10) clamp bar a quarter of a turn and pull it out in a
forward direction. In doing so, pay attention to the turning direction (red check cams);
- Pull the complete ventilator unit and heat exchangers gas valve forward;
Removing housing gure 13.3.a
Removing ue pipe gure 13.3.b
F
G
E
gure 13.3.c
2
1
3
10
8
12
7
5
9
4
5
Installation and Service Manual Upsilon-Series
54
- Remove the burner cassette (18) from the ventilator unit;
- Check the burner cassette for wear and tear, pollution and any breakages. Clean
the burner cassette with a soft brush and vacuum cleaner. In the case of breakages,
always replace the complete burner cassette (18);
- Replace the gasket (17) between the burner (18) and upper casing (15) ;
- Replace the gasket (16) between the upper casing (15) and exchanger:
Checkingthenonreturnvalveintheuppercasing,venturiandfan
1. Loosen with a 8mm wrench the top bolt of the fan ange
2. Unscrew the bottom bolt completely from the fan ange using a 8mm socket / crank
wrench
3. Remove the fan with gas valve from the upper casing and replace the black seal in
the upper casing by a new one.
4. Thefollowingoperationsmustbeperformedcarefullyinrelationtothevulne-
rabilityofthenonreturnvalve.
Remove the non return valve completely from the upper casing. Check the non return
valve if the entire circumference closes / seals completely. If the valve seals fully,
replace the non return valve back into the upper casing (transparent part inside).
Replace the non return valve if the valve does not seal properly.
- Check the venturi and gas distribution plate for pollution and clean them, if necessary,
with a soft brush and a vacuum cleaner. If the header is extremely dusty, then it is
likely that the fan is also dirty. To clean it, the ventilator has to be dismantled from the
upper casing and the venturi. Clean the fan with a soft brush and vacuum cleaner. At
the same time, replace the gasket and ensure that the new gasket is properly tted
when installing the ventilator parts.
Heatexchanger
- Check the heat exchanger for pollution. Clean it, if necessary, with a soft brush and
vacuum cleaner. Prevent any dirt from dropping down.
Rinsing the exchanger with water from the top is not allowed.
Assembly is done in reverse order.
Ensureduringassemblythattheclampingbarsareproperlypositioned.Theyhave
tobeinaverticalposition.
gure 13.3.g
1
2
3
4
15
16
17
18
gure 13.3.d
Position gasket
gure 13.3.e
Checking non return valve
gure 13.3.f
Installation and Service Manual Upsilon-Series
55
Ignitionelectrode
Replace the ignition electrode when necessary, but certainly every 4 years.
This can be checked by reading out the ionisation current. The minimum ionisation cur-
rent has be greater than 2,0 µA at full capacity.
To read out the ionisation current follow the instructions:
From the standard blue screen display:
1. Press down the arrow buttons simultaneously for 2 seconds;
2. Continue with point 3.
From the setting level with a green screen:
3. Select using the right arrow button: Info;
4. Press the OK button;
5. Press the right arrow button until: Burners
6. Press the OK button;
7. Press the right arrow button until: Flame.
The ionisation currunt is shown here in µA. With the + and - button the value of burner
A and B can be shown (heat exchanger symbol turns from A to B).
If the sight glass is damaged, the complete ignition electrode has to be replaced.
Replace as follows:
- Remove the plug connections of ignition electrode;
- Push the clips on either side of the electrode to the outside and remove the electrode;
- Remove and replace the gasket;
Assembly is done in reverse order.
Condensatecontainer(refertog.13.3.cande)
Take precautionstopreventcondensatefallingon electronicsandotherboiler
partsduringdismantlingtoavoiddamageoftheseparts.
- Remove the short clamping bars (7 and 8) by loosening them a quarter of a turn. In
doing so, pay attention to the turning direction (red check cams).
- Pull the clamping bars forward and away from underneath the condensate container.
- Carefully push the condensate container (12) down and remove it from the front;
- Replace the condensate container gasket by a new one.
- Clean the polluted condensate container with water and a hard brush.
- Check the condensate container for any leakages.
Assembly is done in reverse order.
Ensure proper all around sealing of the gasket when installing the condensate container.
Ensureduringassemblythattheclampingbarsareproperlypositioned.Theyhave
tobeinaverticalposition.
Duringmaintenancealwaysreplacethegasketsofdismantledparts.
Flame
0.00 uA
gure 13.3.h
Installation and Service Manual Upsilon-Series
56
Syphon(refertog.13.3.f)
Placeacollector(i.e.abucket)underthesyphontocollectthedirtyandaggressive
condensatewater.Wearprotectiveclothinglikelatexglovesandsafetyglasses.
- Dismantle the syphon by unscrewing the syphon cup (H).
Check the syphon cup (H), siphon adapter (G) and syphon pipe (I) for pollution.
- Clean these parts by rinsing them with water.
- Re-grease the O-rings with acid-free O-ring grease to facilitate easy assembly.
- If the syphon shows any leakage, the whole siphon has to be replaced:
Take the device back into operation and conduct a ue gas analysis (refer to chapter
Check O
2
).
13.4Counterrunninghours
From factory a xed number of running hours is set for service interval. The number of
running hours can not be changed. After expiring of the number of running hours the
message "Service" is displayed on the screen.
If the maintenance activities, as described hereinbefore, have been carried out, the
counter has to be reset.
To reset the counter, the following procedure has to be followed (starting from a blue
screen):
- Press down the arrow buttons simultaneously for 2 seconds.
The screen turns green;
- Press the right arrow button until you see Service chapter.;
- Press OK;
- Press the right arrow button until you see Reset Counters;
- Press OK;
The screen displays Conrm Reset;
- Press OK to conrm the reset function;
The screen displays Conrm Reset;
The counter is reset to the same number of hours as set from factory. The message
"SERVICE" is no longer displayed.
Syphon gure 13.3.e
H
G
I
Service
Mode
Reset
Counters
Confirm
Reset
Installation and Service Manual Upsilon-Series
57
Block.
B000sc00
Error
E000sc00
Message
M000sc00
14 Errorreport
On the display, errors found are shown in the form of a message or blocking on a blue
screen or an error on a red screen.
- Blocking This is a temporary error that will sort itself out, or it will block the
boiler after several attempts (error)(Except: Bx01sc01 = reset)
- Error Error implies a blocking of the boiler and can only be solved by a
reset and/or intervention of a service engineer.
- Message Implies a message such as low water pressure, but the device will
remain operational.
Point of attention requiring short-term intervention.
The code consists of a Main Code and a Subcode
Main code Blocking = B
Main code Error = E
Main code Message = M
Followed by a character 0 = boiler
1 = burner A
2 = burner B
Subcode always starts with sc
Bx01sc01 Fan does not run on correct speed (Reset necessary). Fan defective.
Bx03sc01* Flow sensor T1 open
Bx03sc02* Flow temperature T1 too high
Bx03sc03* Flow sensor T1a open
Bx03sc04* Flow temperature T1a too high
Bx05sc01* Return sensor T2 open
Bx05sc02* Return temperature T2 too high
Bx08sc01* General purpose contact open
Bx12sc01* Water pressure sensor open
Bx12sc02* Water pressure sensor closed
Bx12sc03* Water pressure lower than 0.7bar. Top up
Bx12sc04* Water pressure too high. Decrease pressure
Bx12sc05* No pressure increase on pump start
Bx13sc01* DT between T1 and T2 too high
Bx15sc01* Communication error between controls
Ex01sc01* Fan does not run on correct speed. Fan defective.
Ex02sc01* No ame after 4 start attempts
Ex02sc02* Insufcient ionisation
Ex04sc01* Flow temperature T1 too high
Ex04sc02* Flow sensor T1 closed
Ex04sc03* Flow temperature T1a too high
Ex04sc04* Flow sensor T1a closed
Ex06sc01* Return temperature T2 too high
Ex06sc02* Return sensor T2 closed
Ex18sc01* Unwanted ame forming
Ex14sc01* DT not fast enough
Ex14sc02* DT between T1 and T2 > 35°C
M024sc01 DHW sensor T3 open (when P122=1)
M024sc02 DHW sensor T3 closed (when P122=1)
M024sc03 Outside sensor T4 open
M024sc04 Outside sensor T4 closed
M024sc05 Common ow sensor T10 open
M024sc06 Common ow sensor T10 closed
M024sc08 Bus communication: Possibly no bus communication cable connected
Mx24sc09 Temperature increase (Gradient) not fast enough after burner start
Mx24sc10 DT between T1 and T2 > 35°C when gas valve opened
* When this code is shown with an M instead of a B or E then a reset with the reset button is possible.
OpenThermerrormes-
sages
Thecodingofthetrans-
mittedErrorMessages
onaOpenThermcon-
trollerisdisplayedas
follows:
(E)EB(E=ErrorCode=
Bandboilernumber)
example:ErrorCode
Ex02SC02onboiler6
willappearas(0)26
Installation and Service Manual Upsilon-Series
58
15 Warrantyconditions
To register your warranty, visit the website www.aosmithinternational.com/content/
product-registration and ll in the Product Registration Form. Registering the boiler
gives the owner of the boiler supplied by A.O. Smith Water Heaters the right to the warranty
set out below, which denes the commitments of A.O. Smith Water Heaters to the owner.
15.1Generalwarranty
If within (two and a half) years after the original production date of a central heating boi-
ler supplied by A.O. Smith Water Heaters, following verication, and at the sole discretion
of A.O. Smith Water Heaters, an assembly or part (with exclusion of the heat exchanger)
proves to be defective or fails to function correctly due to manufacturing and/or material
defects, then A.O. Smith Water Heaters shall repair or replace this assembly or part.
15.2Heatexchangerwarranty
If within (ve and a half) years after the original production date of a central hea-
ting boiler supplied by A.O. Smith Water Heaters, following verication, and at the sole
discretion of A.O. Smith Water Heaters, the stainless steel heat exchanger proves to
be leaking due to rust or corrosion occurring on the water side, then A.O. Smith Water
Heaters shall offer to replace the defective heat exchanger with an entirely new heat
exchanger. The warranty period given on the replacement heat exchanger shall be equal
to the remaining warranty period of the original central heating boiler that was supplied.
15.3Conditionsforinstallationanduse
The warranty set out in articles 1 and 2 will apply solely under the following conditions:
a. The central heating boiler is installed under strict adherence to A.O. Smith Water
Heaters installation instructions for the specic model, and the relevant government
and local authority installation and building codes, rules and regulations in force at
the time of installation.
b. The central heating boiler is exposed to regular use. Regular use means that the cen-
tral heating boiler is used for room heating installation and/or production of sanitary
hot water, for which the number of burning hours is not exceeding 4000 hours per
year. These are installations where the ow temperature is not exceeding 90°C.
c. The central heating boiler remains installed at the original site of installation.
d. The water used in the central heating boiler system complies with the specication
as described in the installation instructions.
e. The central heating boiler is safeguarded by means of periodic service and main-
tenance by an approved service engineer.
f. The water pressure and/or heat load do not exceed the maximum values stated on
the rating plate of the central heating boiler.
g. The central heating boiler is installed in a non-corrosive atmosphere or environment.
h. For a combi type central heating boiler (meant for both central heating and sanitary
hot water) only drinking water may be used on the sanitary side. A.O. Smith Water
Heaters is not responsible for damage to storage tank, plate heat exchanger or heat
exchanger in case of use of water that does not comply with the drinking water gui-
delines with regard to hardness and chloride concentration.
i. Replaceable user parts such as gaskets, seals, glass fuses, O-rings and ignition and
ames sensing pens are excluded for warranty.
Installation and Service Manual Upsilon-Series
59
15.4Exclusions
The warranty set out in articles 1 and 2 will not apply in the event of:
a. damage to the central heating boiler caused by an external factor;
b. misuse, neglect (including frost damage), modication, incorrect and/or unauthorized
use of the central heating boiler and any attempt to repair leaks;
c. non approved contaminants or other substances having been allowed to enter the
heating system loop of the central heating boiler (see installation instructions);
d. any attempts at repair to a defective central heating boiler other than by an approved
service engineer.
e. use of non original A.O. Smith Water Heaters parts for spare parts or as a repair part.
15.5Scopeofthewarranty
The obligations of A.O. Smith Water Heaters pursuant to the specied warranty are limi-
ted to free delivery from the warehouse of the replacement assemblies, parts or central
heating boiler, respectively. Shipping, labor, installation and any other costs associated
with the replacement will not be accepted by A.O. Smith Water Heaters. Replaced parts
can only be claimed at A.O. Smith Water Heaters if they are returned to A.O. Smith Water
Heaters in its original service-/spare part packaging.
15.6Claims
A claim on grounds of the specied warranty must be submitted to the dealer from whom
the central heating boiler was purchased, or to another authorized dealer for A.O. Smith
Water Products Company products. Inspection of the central heating boiler as referred to
in articles 1 and 2 shall take place in one of the laboratories of A.O. Smith Water Heaters.
15.7ObligationsofA.O.SmithWaterHeaters
A.O. Smith Water Heaters grants no other warranty or guarantee over its central heating
boilers nor the (assemblies or parts of) central heating boilers supplied for replacement,
other than the warranty expressly set out in these warranty conditions. Under the terms
of the supplied warranty, A.O. Smith Water Heaters is not liable for damage to persons
or property caused by (assemblies or parts of) a (replacement) central heating boiler
that it has supplied.
Installation and Service Manual Upsilon-Series
60
AnnexA Technicalspecications
TechnicalspecificationsNaturalgasG20
Boilertype UB70 UB110 UB140
Typeheatexchanger
HEX4 HEX4 HEX4
HEX2 HEX4
Input Hs CH kW
68,5 107,9 136,4
Qn Input Hi CH kW
61,8 97,3 123
Efficiency class according BED   
Rendement volgens EN677 / EN15417
(36/30°C deellast, onderw.)
% 110,2 110,3 110,2
Efficiency according EN677 / EN15417
(36/30°C part load, Hi)
% 109,8 109,2 108,9
Efficiency according EN677 / EN15417
(80/60°C full load, Hi)
% 97,3 97,6 97,6
Modulation range CH
(capacity 80/60°C)
kW 8,8 - 60,1 14,8 - 95,0 17,6 - 120,0
Modulation range CH
(capacity 50/30°C)
kW 9,9 - 65,0 16,8 - 102,3 19,8 - 130,0
Flue gas pressure Pa 175 195 195
Nox class EN483, EN15420 5 5 5
O
2
CO
2
%
%
Flue gas non-return valve present
yes yes yes
Flue gas temp. CH
(80/60°C on full load)
°C 76 73 77
Flue gas temp. CH
(50/30°C on low load)
°C 30 30 30
Gas consumption G20 CH
(at 1013 mbar/15°C)
m
3
/h
6,53 10,29 13,01
Gas category
Boiler flue category
Electr. power consumption max. W
161 250 322
Electr. power consumption part load W
44 86 88
Electr. power consumption stand by W
2,5 3,7 3,7
Current V/Hz
230/50 230/50 230/50
Degree of protection acc. EN 60529
Weight (empty) kg
65 83 87
Mounting weight kg
54 72 76
Width mm
660 660 660
Height mm
1065 1065 1065
Depth mm
460 460 460
Mounting height (excl. flue connection) mm
1715 1715 1715
Water content CH l
7 12 14
Overrun time pump CH min
3 3 3
P
MS
Water pressure min./max.
bar
0,7 / 4 0,7 / 4 0,7 / 4
Flow temperature max. °C
85 85 85
Type pump Grundfoss UPM HEX4
HEX2
GEO 25-85
-
GEO 25-85
2 25-60
GEO 25-85
GEO 25-85
CE product identification number (PIN)
TechnicalspecificationsPropanegasG31
Boilertype
UB70 UB110 UB140
Typeheatexchanger
HEX4 HEX4 HEX4
HEX2 HEX4
O
2
%
CO
2
%
Restriction plate diameter mm
5,7
-
5,7 (HEX4)
5,2 (HEX2)
5,7
5,7
Pre-pressure mbar
Load(H
i
)
kW
61,8 94,9 123
Gas consumption G31 (1015mbar, 15°C) kg/h
4,80 7,37 9,54
m
3
/h
2,52 3,87 5,01
Modulation range (80/60°C) kW
19,5-60,1 35,1-95,0 39,0-120,0
Modulation range (50/30°C) kW
22,0-65,0 39,7-102,3 44,0-130,0
5,1% (-1,2%, +0,7%)
10,3% (-0.4%, +0.8%)
see data plate propane
* EN15417 = Specific requirements for condensing boilers with a nominal heat input exceeding 70 kW up to 1000 k
W
Upsilon
II2H3P
B23 B33 C13 C33 C43 C53 C63 C83 C93
IPX4D (IPX0D for B
23
& B
33
)
4,7 (-1,2%, +0,8%)
9 (-0,4%, +0,6%)
0063CM3648
NOTE:
TheUpsilonboilerscanberunonpropane/lpg.Thelpg-gashastohaveapropane
purityofatleast90%.Whenthebutane-level is greater then 10% thewarranty
conditionsontheheatexchangersarenotvalid.
Installation and Service Manual Upsilon-Series
61
AnnexB Systemwateradditives
When the lling water requirements as referred to in chapter Water Quality have been met, certain additives are allo-
wed for the below mentioned applications and related dosage. Warranty on A.O.Smith delivered installation products
expires, if these additives and concentrations are not used in accordance with this annex.
Additive type Supplier and specications Max. concentration Application
Corrosion inhibitors Sentinel X100 Corrosion resistant
protection agent of CH systems
Kiwa certied
1-2 l/100 litres CH water content Aqueous solution of organic and
inorganic agents preventing corro-
sion and scale forming
Fernox F1 Protector Corrosion
resistant protection agent of CH
systems
Kiwa certied KIWA-ATA K62581,
Belgaqua certied Cat III
500 ml can or 265 ml Express /
100 litres CH water content
Preventing corrosion and scale
forming
Anti-freeze Kalsbeek
Monopropyleneglycol / propane-
1,2-diol
+ inhibitors
AKWA-Colpro KIWA-ATA Nr.
2104/1
50% w/w Anti-freeze
Tyfocor L
Monopropyleneglycol / propane-
1,2-diol
+ inhibitors
50% w/w Anti-freeze
Sentinel X500
Monopropyleneglycol + inhibitors
Kiwa certied
20-50% w/w Anti-freeze
Fernox Alphi 11
Monopropyleneglycol + inhibitors
Kiwa certied KIWA-ATA K62581,
Belgaqua certied Cat III
25-50% w/w Anti-freeze in combination with F1
Protector
System cleaners Sentinel X300
Solution of phosphate, organic he-
terocyclic compounds, polymers
and organic bases
Kiwa certied
1 litre / 100 litres For new CH installations Removes
oils/grease and ow control agents
Sentinel X400
Solution of synthetic organic poly-
mers
1-2 litres / 100 litres For cleaning existing CH-installati-
ons Removes sediments.
Sentinel X800 Jeto
Aqueous emulsion of dispersants,
moistening agents and inhibitors
1-2 litres / 100 litres For cleaning new and existing CH-
installations Removes iron and
lime-related sediments.
Installation and Service Manual Upsilon-Series
62
AnnexC Dimensions
dimensions (in mm) Figure C.a
Boilertype
UB70 UB110 UB140
Concentric flue system mm 100 / 150 100 / 150 100 / 150
Parallel flue system mm 2x 100 2x 100 2x 100
Gas pipe - g 1 1/4" 1 1/4" 1 1/4"
Flow pipe CH - a 1 1/2" 1 1/2" 1 1/2"
Return pipe CH - r 1 1/2" 1 1/2" 1 1/2"
Condensate drain pipe - c mm 26 26 26
Upsilon
465
315
ø150
ø100
165
ø100
345
1066
1151
105
180
275
370
510
30
237
460
50
100
660
Table connection dimaeters Table C.a
Individual ue: min.
400mm
Collective ue: depen-
dant from selected ue
sytem. Please contact
the supplier
Installation and Service Manual Upsilon-Series
63
1430
660
1070
460
1715
1000
1070
460
1715
540
2830
660
5630
660
1070
460
1715
540
1070
460
1715
540
1430
660
2 Upsilon boilers free-standing in line 3 Upsilon boilers free-standing back-to-back
4 Upsilon boilers free-standing in line
8 Upsilon boilers free-standing in line
Installation and Service Manual Upsilon-Series
64
1430
660
1070
460
1715
1000
700195
195700
700
270
30
700 315150
120
770
410 180180
Dimensions ue connections
Installation and Service Manual Upsilon-Series
65
Dimensions main header
DN65 / DN100
100
ø42
350
130
195
460
20
240
455
L 2/4 places = 1398mm (DN65/DN100)
L 3/6 places = 2098mm (DN65/DN100)
14073 228
441
680
330175
30
220
110
G1/2”
G3/8”
DN65
DN65
DN65
DN65
G1”
25080 349
709
910
560175
30
220
110
DN100
DN100
DN100
DN100
G1”
G1/2”
G3/8”
Dimensions low velocity header DN65 until 452kW
Dimensions low velocity header DN100 until 960kW
197
DN65
DN100
Dimensions bend DN65 and DN100
Installation and Service Manual Upsilon-Series
66
Upsilon 1 boiler, wall hung Upsilon 2 boilers, wall hung, max.200kW
Upsilon 1 boiler, free-standing Upsilon 2 boilers, free-standing, max. 200kW
NumberofUpsilonboilers(UB70,UB110,UB140
)
1 2 1 2
Necessaryarticles:
0310265 Lshapeframeforbacktobackalignmen
t
2 2
031026
6
Ishapeframeforlinealignment 1
0310267 Boilerframe 1 2
0310335 Lowvelocityheaderfor1or2boilers(max.200kW
)
1 1 1 1
0310286 Boilerconnectionsetforsingleboile
r
1 2 1 2
0310289 Buscommunicationcable 1 1
0310290 Commonflowsensor10kOhmT3/T1
0
1 1 1 1
Supplyofconnectionpipes,fittingsandbracketsbythirdparty
.
wallhung freestanding
3/8”
1/2”
34
26
56
660
440
529
352
1 1/2” (4x)
48
1/2”
2” (2x)
Installation and Service Manual Upsilon-Series
67
AnnexD Declarationofconformity
CEDECLARATIONOFCONFORMITY
Hereby declares A.O. Smith Water Products Company B.V. that,
the condensing boiler types: Upsilon UB 70
UB 110
UB 140
are in conformity with the provisions of the following EC Directives, including all amendments, and
with national legislation implementing these directives:
Directive Used standards
Gas Appliance Directive 2009/142/EC EN483: 2005
EN15420: 2010
EN15417; 2007
EN60335-2-12: 2006
EN60335-1 (partly): 2002
Efficiency Directive 92/42/EEC EN677: 1998
EN15417: 2007
Low Voltage Directive 2006/95/EG EN60335-2-102: 2006
EN60335-1 (partly): 2002
EMC Directive 2004/108//EG EN61000-3-2: 2000
EN61000-3-3: 2001
EN55014-2: 1997
EN55014-1: 2000
Report number 179648
and that the products are in conformity with EC type-examination certificate number E0430, as
stated by KIWA-Gastec Certification BV, Apeldoorn, The Netherlands.
Date : 28-06-2012
Signature :
Full name : T. van der Hamsvoort
(General Manager)
A.O. Smith UK, Unit B8 Amstrong Mall,
Southwood Business Park, Farnborough, Hampshire GU14 0NR
www.aosmith.co.uk
“A.O. Smith Water Heaters” is a trading name of Advance Services (Sales) Ltd. Reg.
your installer
5

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