719954

Ariston Clas Net One Handleiding

64
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CONDENSING WALL-HUNG GAS BOILER
Country of Destination: GB/IE
G.C.N.: 47-116-88 (24 kW)
G.C.N.: 47-116-89 (30 kW)
G.C.N.: 47-116-90 (38 kW)
G.C.N.: 47-116-85 (24 kW)
G.C.N.: 47-116-86 (30 kW)
G.C.N.: 47-116-87 (38 kW)
G.C.N.: 41-116-49 (18 kW)
G.C.N.: 41-116-50 (24 kW)
G.C.N.: 41-116-51 (30 kW)
INSTALLATION AND SERVICING INSTRUCTIONS
HOT WATER I HEATING I RENEWABLES
CLAS NET One
CLAS One
CLAS SYSTEM One
discover more
@ariston.com
INDEX
Overview ............................................................................................3
General Information ........................................................................4
Advice for the Installer....................................................................4
CE Labelling ......................................................................................4
Data Plate Symbols .........................................................................4
Safety Regulations ..........................................................................5
Product description ........................................................................7
Control Panel ....................................................................................7
Display ................................................................................................8
Overall View ......................................................................................9
Overall Dimension .........................................................................10
Minimum Clearances ....................................................................10
Installation ....................................................................................... 11
Reference Standards .....................................................................11
Installing the Boiler ........................................................................ 14
Gas Connection .............................................................................. 15
Water Connection ..........................................................................15
Instructions for Opening the Casing and Performing an
Internal Inspection ....................................................................15
Underoor heating ........................................................................16
Water circuit diagram .................................................................... 17
Connecting the Flue ......................................................................18
Fitting the Coaxial Flue (Ø 60/100 Horizontal) ......................19
Fitting the 5” Flue (Ø 80/125 Horizontal / Vertical) .............. 20
Fitting the Coaxial Flue (Ø 60/100 Vertical) ............................ 21
Fitting the Twin Pipe (Ø 80/80) ..................................................22
Electrical Connections ................................................................. 25
Peripheral Unit Connection ........................................................25
Room Thermostat Connection ...................................................26
Outdoor Sensor Connection ......................................................26
Cylinder connection .....................................................................26
Internal mechanical time clock
Internal RF receiver for Ariston programmable
room thermostat........................................................................ 27
Electrical Diagram ........................................................................28
Commissioning ............................................................................. 32
Initial Preparation .......................................................................... 32
Electricity Supply .......................................................................... 32
Filling the Heating System ......................................................... 32
Filling of the DHW System .......................................................... 32
Gas Supply ..................................................................................... 32
Water Treatment ............................................................................32
First Igniton Operation ................................................................. 33
Ignition procedure ......................................................................... 34
Test Function and Combustion Analysis ................................35
AUTO Function ............................................................................... 37
Boiler Protection Devices .......................................................... 38
Boiler Protection Devices............................................................ 38
Table summarising error codes ................................................. 38
Anti-Frost Device ...........................................................................39
Settings - Adjustment - Problem Identication Menus
Accessing the Menus ................................................................... 40
Maintenance
General Comments ...................................................................... 47
Operational Test ............................................................................ 47
Draining procedures..................................................................... 47
Cleaning the primary exchanger .............................................. 47
Cleaning the trap .......................................................................... 47
Maintenance Guide
General Access ............................................................................. 48
Electrical Unit ................................................................................. 49
Hydraulic Unit ................................................................................52
Burner Unit ...................................................................................... 62
Annual Maintenance .................................................................... 66
Technical Information
Technical Data CLAS ONE / CLAS NET ONE .........................68
Technical Data CLAS SYSTEM ONE ........................................69
ERP Data CLAS ONE / CLAS NET ONE ................................... 70
Product che CLAS ONE / CLAS NET ONE ............................ 70
ERP Data CLAS SYSTEM ONE .................................................... 71
Product che CLAS SYSTEM ONE ............................................. 71
Product che CUBE S NET - CLAS NET ONE ......................... 71
Package Label - Instuctions to lling ....................................... 72
Package che ................................................................................ 74
Benchmark Commissioning Checklist .....................................77
Benchmark Service Interval Record ........................................ 78
/ 3
OVERVIEW
These instructions are suitable for Clas ONE, Clas System ONE and Clas Net ONE boilers :
Do not forgot to complete the Benchmark Commissioning Checklist!
The Benchmark Scheme
Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that customers
are provided with the correct equipment for their needs, that it is installed, commissioned and serviced in
accordance with the manufacturer’s instructions by competent persons and that it meets the requirements of
the appropriate Building Regulations. The Benchmark Checklist can be used to demonstrate compliance with
Building Regulations and should be provided to the customer for future reference.
Installers are required to carry out installation, commissioning and servicing work in accordance with the
Benchmark Code of Practice which is available from the Heating and Hotwater Industry Council who manage
and promote the Scheme. Visit www.centralheating.co.uk for more information.
To The Installer
As part of the commissioning of this appliance it is vital that the Benchmark Commissioning Checklist is completed and
given to the Householder. Please ensure that your customer is aware of the importance of keeping the Commissioning
Checklist and Service Interval Record safe to document the product’s history.
Please ensure that your customer is aware of the correct operation of the system, boiler and controls.
ARISTON recommend the use of protective clothing, when installing and working on the appliance i.e. gloves.
CUSTOMER CARE
ARISTON, as a leading manufacturer of domestic and commercial water heating appliances is committed to providing
high quality products and a high quality after sales service.
Advice on installation or servicing can also be obtained by contacting the ARISTON Technical and Customer Service
Departments at High Wycombe.
TECHNICAL DEPARTMENT CUSTOMER SERVICE DEPARTMENT
Tel: 0333 240 7777 Tel: 0333 240 8777
Fax: 01494 459775 Fax: 01494 459775
WARRANTY
The manufacturer’s warranty is for 8 (Clas ONE & Clas System ONE) or 12 (CLAS NET ONE) years from the date of
purchase. The warranty is invalidated if the appliance is not installed in accordance with the recommendations made
herein or in a manner not approved by the manufacturer. To assist us in providing you with an efcient after sales
service, please register the warranty online at www.ariston.co.uk
CAUTION
In the United Kingdom, installation, start-up, adjustments and maintenance, must be performed by a competent person
only, in accordance with the current Gas Safety (Installation & Use) Regulations and the instructions provided.
In the Republic of Ireland, the installation and initial start up of the appliance must be carried out by a Competent
Person in accordance with the current edition of I.S.813 “Domestic Gas Installations”, the current Buidling Regulations,
reference should also be made to the current ETCI rules for electrical installation.
All GAS SAFE registered installers carry a GAS SAFE ID card, and have a registration number. Both should be
recorded in your boiler Benchmark Commissioning Checklist. You can check your installer is GAS SAFE registered
by calling GAS SAFE directly on:- 0800 408 5500.
Improper installation may cause damage or injury to individuals, animals and personal property for which the
manufacturer will not be held liable. To ensure efcient and safe operation it is recommended that the boiler is serviced
annually by a competent person.
If it is known that a fault exists on the appliance, it must not be used until the fault has been corrected by a competent
person.
Please refer to the terms and conditions of warranty in the user manual which are also available on our website.
This instruction booklet is especially designed for appliances installed in the UK and the Republic of Ireland
4 /
OVERVIEW
CE labelling
The CE mark guarantees that the appliance conforms to the
following directives:
- 2009/142/CEE
relating to gas appliances
- 2014/30/EU
relating to electromagnetic compatibility
- 92/42/CEE
relating to energy efciency
- 2014/35/EU
relating to electrical safety
- 2009/125/CE
Energy related Products
- 813/2013
Commission regulation (EU)
Advice for the installer
This appliance is designed to produce hot water for domestic
use.
It should be connected to a heating system and a distribution
network for domestic hot water, both of which must be compatible
with its performance and power levels.
The use of the appliance for purposes other than those
specied is strictly forbidden. The manufacturer cannot be held
responsible for any damage caused by improper, incorrect and
unreasonable use of the appliance or by the failure to comply
with the instructions given in this manual.
Installation, maintenance and all other interventions must be
carried out in full conformity with the governing legal regulations
and the instructions provided by the manufacturer. Incorrect
installation can harm persons, animals and possessions; the
manufacturing company shall not be held responsible for any
damage caused as a result. The boiler is delivered in a carton.
Once you have removed all the packaging, make sure the
appliance is intact and that no parts are missing. If this is not the
case, please contact your supplier.
Keep all packaging material (clips, plastic bags, polystyrene foam,
etc.) out of reach of children as it may present a potential hazard.
In the event of a fault and/or malfunction, turn the appliance
off, turn off the gas cock and do not attempt to repair it yourself.
Contact a qualied professional instead.
Before any maintenance or repair work is performed on the
boiler, make sure you have disconnected it from the electricity
supply by switching the external bipolar switch to the “OFF”
position and removing the fuse.
All repairs, which should only be performed using original spare
parts, should be carried out by a qualied professional. Failure
to comply with the above instructions could compromise the
safety of the appliance and invalidate all liability on the part of
the manufacturer.
In the event of any maintenance or other structural work in the
immediate vicinity of the ducts or ue gas exhaust devices and
their accessories, switch the appliance off by switching the
external bipolar switch to the “OFF” position and shutting off the
gas control valve. When the work has been completed, ask a
Symbols used on the data plate
MIN
Q
MAX
P
60/80°C
1
2
5
4
3
3
6
7
19
8
9
10
11
12
14
15
16
17
18
13
20
21
22
1
Legend :
1. Brand
2. Manufacturer
3. Boiler model
Serial number
4. Commercial reference
5. Certication number
6. Destination country
Gas category
7. Gas setting
8. Installation type
9. Electrical data
10. Maximum domestic hot
water pressure
11. Maximum heating pressure
12. Boiler type
13. NOx class / Efciency
14. Input rating nominal
heating
15. Power ouput heating
16. DHW specic ow rate
17. Boiler output efciency
18. Input rating nominal DHW
19. Gases which may be used
20. Minimum ambient
temperature for use
21. Max. central heating
temperature
22. Max. domestic hot water
temperature
ATTENTION!!
THE INSTALLATION AND FIRST
IGNITION OF THE BOILER MUST BE
PERFORMED BY GAS SAFE REGISTERED
ENGINEER IN COMPLIANCE WITH
GAS SAFETY (INSTILLATION & USE)
REGULATIONS AND ALL OTHER NATIONAL
REGULATIONS REGARDING INSTALLATION,
AND IN CONFORMITY WITH ANY
REQUIREMENTS ESTABLISHED BY LOCAL
AUTHORITIES AND PUBLIC HEALTH
ORGANISATIONS.
AFTER THE BOILER HAS BEEN INSTALLED,
THE INSTALLER MUST ENSURE THAT THE
END USER RECEIVES THE DECLARATION
OF CONFORMITY AND THE OPERATING
MANUAL, AND SHOULD PROVIDE ALL
NECESSARY INFORMATION AS TO HOW
THE BOILER AND THE SAFETY DEVICES
SHOULD BE HANDLED.
qualied technician to check the efciency of the ducting and
the devices.
Turn the boiler off and turn the external switch “OFF” to clean
the exterior parts of the appliance.
Clean using a cloth dampened with soapy water. Do not use
aggressive detergents, insecticides or toxic products. If the
appliance is used in full compliance with current legislation, it
will operate in a safe, environmentally-friendly and cost-efcient
manner.
If using kits or optional extras, make sure they are authentic.
/ 5
OVERVIEW
Install the appliance on a solid wall which is not
subject to vibration.
Noisy operation.
When drilling holes in the wall for installation
purposes, take care not to damage any electrical
wiring or existing piping.
Electrocution caused by contact with live
wires. Explosions, res or asphyxiation caused
by gas leaking from damaged piping.
Damage to existing installations.
Flooding caused by water leaking from
damaged piping.
Perform all electrical connections using wires
which have a suitable section.
Fire caused by overheating due to electrical
current passing through undersized cables.
Protect all connection pipes and wires in order to
prevent them from being damaged.
Electrocution caused by contact with live
wires. Explosions, res or asphyxiation caused
by gas leaking from damaged piping.
Flooding caused by water leaking from
damaged piping.
Make sure the installation site and any systems
to which the appliance must be connected comply
with the applicable norms in force.
Electrocution caused by contact with live wires
which have been installed incorrectly.
Damage to the appliance caused by improper
operating conditions.
Use suitable manual tools and equipment (make
sure in particular that the tool is not worn out
and that its handle is xed properly); use them
correctly and make sure they do not fall from
a height. Replace them once you have nished
using them.
Personal injury from the falling splinters or
fragments, inhalation of dust, shocks, cuts,
pricks and abrasions.
Damage to the appliance or surrounding
objects caused by falling splinters, knocks and
incisions.
Use electrical equipment suitable for its intended
use (in particular, make sure that the power
supply cable and plug are intact and that the
parts featuring rotary or reciprocating motions
are fastened correctly); use this equipment
correctly; do not obstruct passageways with the
power supply cable, make sure no equipment
could fall from a height. Disconnect it and replace
it safely after use.
Personal injury caused by falling splinters
or fragments, inhalation of dust, knocks,
cuts, puncture wounds, abrasions, noise and
vibration.
Damage to the appliance or surrounding
objects caused by falling splinters, knocks and
incisions.
Make sure any portable ladders are positioned
securely, that they are suitably strong and that
the steps are intact and not slippery and do not
wobble when someone climbs them. Ensure
someone provides supervision at all times.
Personal injury caused by falling from a height
or cuts (stepladders shutting accidentally).
Make sure any rolling ladders are positioned
securely, that they are suitably strong, that the
steps are intact and not slippery and that the
ladders are tted with handrails on either side of
the ladder and parapets on the landing.
Personal injury caused by falling from a height.
During all work carried out at a certain height
(generally with a difference in height of more
than two metres), make sure that parapets are
used to surround the work area or that individual
harnesses are used to prevent falls. The space
where any accidental fall may occur should be
free from dangerous obstacles, and any impact
upon falling should be cushioned by semi-rigid or
deformable surfaces.
Personal injury caused by falling from a height.
Make sure the workplace has suitable hygiene
and sanitary conditions in terms of lighting,
ventilation and solidity of the structures.
Personal injury caused by knocks, stumbling
etc.
Protect the appliance and all areas in the vicinity
of the work place using suitable material.
Damage to the appliance or surrounding
objects caused by falling splinters, knocks and
incisions.
SAFETY REGULATION
Key to symbols:
Failure to comply with this warning
implies the risk of personal injury, in some
circumstances even fatal
Failure to comply with this warning
implies the risk of damage, in some
circumstances even serious, to property,
plants or animals.
6 /
OVERVIEW
Handle the appliance with suitable protection
and with care.
Damage to the appliance or surrounding
objects from shocks, knocks, incisions and
squashing.
During all work procedures, wear individual
protective clothing and equipment.
Personal injury caused by electrocution, falling
splinters or fragments, inhalation of dust,
shocks, cuts, puncture wounds, abrasions,
noise and vibration.
Place all debris and equipment in such a way
as to make movement easy and safe, avoiding
the formation of any piles which could yield or
collapse.
Damage to the appliance or surrounding
objects from shocks, knocks, incisions and
squashing.
All operations inside the appliance must be
performed with the necessary caution in order to
avoid abrupt contact with sharp parts.
Personal injury caused by cuts, puncture
wounds and abrasions.
Reset all the safety and control functions
affected by any work performed on the appliance
and make sure they operate correctly before
restarting the appliance.
Explosions, res or asphyxiation caused by
gas leaks or an incorrect ue gas exhaust.
Damage or shutdown of the appliance caused
by out-of-control operation.
Before handling, empty all components that
may contain hot water, carrying out any bleeding if
necessary.
Personal injury caused by burns.
Descale the components, in accordance
with the instructions provided on the safety
data sheet of the product used, airing the
room, wearing protective clothing, avoid mixing
different products, and protect the appliance and
surrounding objects.
Personal injury caused by acidic substances
coming into contact with skin or eyes; inhaling
or swallowing harmful chemical agents.
Damage to the appliance or surrounding
objects due to corrosion caused by acidic
substances.
This appliance can be used by children
aged from 8 years and above and
person with reduced physical, sensory
or mental capabilities or lack of experience
and knowledge if they have been given
supervision or instruction concerning use of
the appliance in a safe way and understand
the hazards involved. Children shall not
play with the appliance. Cleaning and user
maintenance shall not be made by children
without supervision.
If you detect a smell of burning or smoke, keep
clear of the appliance, disconnect it from the
electricity supply, open all windows and contact
the technician.
Personal injury caused by burns, smoke
inhalation, asphyxiation.
/ 7
PRODUCT DESCRIPTION
CONTROL PANEL
Legend:
1. Display
2. Domestic Hot Water adjustment button +/- (a)
3. MODE button
(Operation mode selection summer/winter)
4. COMFORT button
5. ON/OFF button
6. Auto button (To activate Thermoregulation)
7. RESET button
8 Heating temperature adjustument button +/- (b)
9. Time clock
10. Pressure gauge
21 39 104 5 6 7 8
(a)
Pressing the buttons simultaneously allows
access to the engineers menu and all
parameters and settings
(b)
Use these buttons to modify and save the
parameter settings
8 /
PRODUCT DESCRIPTION
DISPLAY
Legend:
Digits indicating:
- boiler status
- temperature indication with bar level
- error code signals
(ERROR)
- Request press RESET button
 (boiler block)
- menu settings
Technical assistance request
Flame detected with indication of power used
Heating operation set
Heating operation active
Hot water operation set
Hot water operation active
Hot Water Comfort activated
Boiler off with antifreeze function active
Anti-frost Function Active
AUTO
AUTO function activated
High efciency operation (low C.H. ow temperature)
Solar temperature probe connected - option
Error signals
The display shows the code
External temperature displayed
(with external sensor optional)
Wi-Fi active (Kit Optional)
/ 9
PRODUCT DESCRIPTION
CLAS ONE / CLAS NET ONE
Overall view
1
2
5
6
8
9
10
12
13
14
15
16
17
20
18
4
7
3
19
1
2
5
6
8
9
10
12
13
16
17
20
18
4
3
1. Flue connector
2. Air relief valve
3. C.H. Flow temperature probe
4. Main heat exchanger
5. Detection Electrode
6. Air/Gas Mixer
7. Secondary heat exchanger
8 Condensate trap
9. C.H. pressure relief valve
10. Gas valve
12. C.H. circuit lter
13. Modulating circulation Pump with air release
valve
14. D.H.W. Flow switch
15. Diverter valve
16. Switch On-Off
17. C.H. Return temperature probe
18. Modulating Fan
19. Silencer
20. Combustion Analysis Test Point
CLAS SYSTEM ONE
10 /
PRODUCT DESCRIPTION
Overall Dimensions
Minimum clearances
In order to allow easy access to the boiler for maintenance
operations, The boiler must be installed in accordance with the
clearances stated below.
150
315 (Mod. 24)
385 (Mod. 30/35)
180
25745
745
200
120 120
200
28
65 6567 67
745
200
120 120
200
28
132 6567
CLAS ONE / CLAS NET ONE
A. Central Heating Flow
B. Domestic Hot Water Outlet
C. Gas Inlet
D. Domestic Cold Water Inlet
E. Central Heating Return
CLAS SYSTEM O
NE
450
053
003
50 50
/ 11
INSTALLATION
Reference Standards
In the United Kingdom, the installation and initial start-up of the
boiler must be by a Gas Safe registered installer in accordance
with the installation standards currently in effect, as well as with
any and all local health and safety standards i.e. Gas Safe.
In the Republic of Ireland the installation and initial start-up of
the appliance must be carried out by a Competent Person in
accordance with the current edition of I.S.813 “Domestic Gas
Installations” and the current Building Regulations, reference
should also be made to the current ETCI rules for electrical
installation.
The installation of this appliance must be in accordance with
the relevant requirements of the Local Building Regulations,
the current I.E.E. Wiring Regulations, the by-laws of the local
authority, in Scotland, in accordance with the Building Standards
(Scotland) Regulation and Health and Safety document No. 635,
“Electricity at Work Regulations 1989” and in the Republic of
Ireland with the current edition of I.S. 813 and the Local Building
Regulations (IE).
C.O.S.H.H.
Materials used in the manufacture of this appliance are non-
hazardous and no special precautions are required when
servicing.
Codes of Practice
Installation should also comply with the following British
Standards Code of Practice (refer to the most recent version):
BS 7593: Treatment of water in domestic hot water
central heating systems
BS 5546: Installation of hot water supplies for
domestic purposes
BS 5440-1: Flues
BS 5440-2: Air supply
BS EN 12831 - BS EN 14336:
Forced circulation hot water systems
BS 6798: Installation of gas red hot water boilers
of rated input not exceeding 70kW
BS 6891: Installation of low pressure gas pipes up to 28mm
BS 7671: IEE Wiring Regulations
BS 4814: Specication for expansion vessels
BS 5482: Installation of L.P.G.
Technical Bulletin TB143 Flue Gas Analysis
and in the Republic of Ireland in accordance with the following
codes of practice:
I.S. 813 Domestic Gas Installations
Avoid installing the boiler where the air inlet can be polluted
by chemical products such as chlorine (swimming pool area), or
ammonia (hair dresser), or alkalin products (launderette).
Flue
Detailed information on ue assembly can be found in the
“Connecting the Flue” section.
The boiler must be installed so that the ue terminal is exposed
to the free passage of external air at all times and must not be
installed in a place likely to cause nuisance. It must not be
allowed to discharge into another room or space such as an
outhouse or closed lean-to.
Condensing boilers have a tendency to form a plume of water
vapour from the ue terminal due to the low temperature of
the ue gasses. The terminal should therefore be located with
due regard for the damage or discolouration that may occur
to building within the vicinity and consideration must also be
given to adjacent boundaries, openable windows should also
be taken into consideration when siting the ue.
The minimum acceptable clearances are shown below:
- A Directly below an opening, window, etc 300 mm
- B Horizontally to an opening, window, etc 300 mm
- C Below gutters, soils pipes or drain pipes 75 mm
- D Below eaves 200 mm
- E From vertical drain pipe or soil pipe 75 mm
- F From internal or external corner 300 mm
- G Above ground, roof or balcony level 300 mm
- H From a surface facing the terminal 600 mm
- I From a terminal facing a terminal 1200 mm
- J Vertically from a terminal on the same wall 1500 mm
- K Horizontally from an terminal on the same wall 300 mm
- L Fixed by vertical ue terminal
Note: the flue must Not be iNstalled iN a place likely to cause a
NuisaNce aNd positioNed to eNsure that products of combustioN do
Not discharge across a bouNdary
It may be necessary to protect the terminal with a guard, if this
is the case it will be necessary to purchase a stainless steel
terminal guard. Reference should be made to the Building
Regulations for guidance.
Ventilation
The room in which the boiler is installed does not require
specic ventilation. If the boiler is installed in a cupboard or
compartment ventilation is not required for cooling purposes.
20 /
INSTALLATION INSTALLATION
Fitting the 5” Flue
(Ø 80 / 125 Horizontal/vertical)
Once the boiler has been positioned on the wall, it is necessary
to insert the Ø80/125 adaptor (Fig. 5) for both horizontal and
vertical ue runs into the boiler ue socket (not supplied with
ue kit - Part No 3318095).
Push the adaptor onto the boilers ue connection, grease the
seals then add extensions or elbows as required, secure the
adaptor, using the clamp and screws provided.
To t extensions or elbows it is rst necessary to ensure that
the lip seal is tted correctly into the inner ue, once veried,
it is simply necessary to push them together, no clamps are
necessary to secure the ue components.
Before proceeding to t the ue, ensure that the maximum ue
length has not been exceeded (See the tables) and that all
elbows and bends have been taken into consideration, for each
additional 90° elbow 1 metre must be subtracted from the total
ue length, and for each 45° 0.5 metres must be subtracted from
the total ue length (the height of the vertical adaptor and a 45°
bend can be seen in Fig.6 and a 90° bend in Fig. 7).
Note: DO NOT cut the vertical ue kit.
180 mm
Total length
of Vertical Kit
1240 mm
5" Adaptor
Part no: 3318095
* This length will vary
according to the type
of ashing installed
Useable length
of Vertical ue
575 mm*
Fig. 5
Clamp
Seal
Screws
Fig. 4
Fig. 6
Fig. 7
24 /
INSTALLATION INSTALLATION
Table of ue gas exhaust duct lengths
S1 = Air intake S2 = Flue gas exhaust
S1 = S2 - Air intake and ue gas exhaust equal lengths
S1 + S2 - Air intake and ue gas exhaust unequal lengths
TYPE C13
TYPE C33 TYPE C53
TYPE C33 TYPE C33
FLUE TYPE
Maximum Extension Exhaust-air (m)
Diameter of pipe
(mm)
CLAS ONE / CLAS NET ONE CLAS ONE SYSTEM
24 30 38 18 24 30
Coaxial System
C13
C33
C43
8 7 6 8 8 7 ø 60/100
C13
C33
C43
33 24 27 32 33 24 ø 80/125
Twin-pipe System
S1 = S2
ø 80/80
C13 24/24 26/26 16/16 36/36 24/24 26/26
C33 48/48 40/40 32/32 48/48 40/40 32/32
C43 24/24 26/26 16/16 36/36 24/24 26/26
C53
S1 + S2 S1 + S2
60 50 35 50 60 50 ø 80/80
/ 25
INSTALLATION
Electrical connections
For increased safety, ask a qualied technician to perform a
thorough check of the electrical system.
The manufacturer is not responsible for any damage caused by
the lack of a suitable earthing system or by the malfunctioning
of the electricity mains supply.
Make sure that the system is able to withstand the maximum
power absorbed by the boiler (this is indicated on the appliance
data plate). Check that the section of the wires is suitable and is
not less 0,75 mm
2
The appliance must be connected to an efecient earthing
system if it is to operate correctly.
The power supply cable must be connected to a 230V-50Hz
network, where the L-N poles and the earth connection are all
respected.
Important!
In the event that the power supply cable must be changed,
replace it with one with the same specications.
Power supply cable
Important!
The appliance is supplied with a y-lead already
connected, this must be connected to a 240V supply fused
at 3 Amp and must facilitate completed electrical isolation of
the appliance, by use of a fused double pole isolator having a
contact separation of at least 3mm in all poles or alternatively
by means of a 3A fused three pin plug and unswitched
shuttered socket outlet both complying with BS1363.
The use of multiplugs, extension leads or adaptors is strictly
prohibited.
It is strictly forbidden to use the piping from the hydraulic,
heating and gas systems for the appliance earthing connection.
The boiler is not protected against the effects caused by
lightning. If the mains fuses need to be replaced, use 2A rapid
fuses.
Peripheral unit connection
To access peripheral unit connections carry out the following
steps:
- Disconnect the boiler from the power supply
- Remove the casing
- Rotate the control panel while pulling it forwards
- Unhook the two clips to have access to the peripherical
connections and the main P.C.B.
H05V2V2-F
60 mm
N
L
BUS
T B
FLOOR
TA2
SE TNK SOL TA1
CN1
CUBE S NET (standard for CLAS NET ONE)
WiFi Room Thermostat
SENSYS
Remote Control (option)
Outdoor
Sensor
Room Thermostat
1
(option)
OK
1 2 3 4 5 6 7
Peripheral connections:
BUS = Remote control connection
FLOOR/TA2 = the underoor heating thermostat or the room
thermostat 2 (selected via parameter 223)
SE = the external sensor.
SOL = Solar temperature probe
TA1 = the room thermostat 1
WARNING!
BEFORE PERFORMING ANY WORK ON
THE BOILER, FIRST DISCONNECT IT FROM
THE ELECTRICAL POWER SUPPLY USING
THE EXTERNAL BIPOLAR SWITCH AND
REMOVE THE FUSE.
BUS
T B
TA2 SE TNK SOL TA1
26 /
INSTALLATION INSTALLATION
Room Thermostat / Remote Clock Connection
To connect a room thermostat, it is necessary to:
1. Open the control panel
2. Loosen the cable clamp using a screwdriver and insert the
wires leading from the room thermostat
3. Connect the wires to the terminals as indicated in the gure
below, removing the link
4. If a remote time clock is to be tted, using a volt free switching
time clock connect the switching wires from the time clock
following points 1 - 3 above
5. If using an external time clock and room thermostat, these
must be connected in series as shown in diagram C,
6. Ensure that they are well connected and not subject to stress
when the control panel is closed
DO NOT CONNECT 240V TO ANY PERIPHERAL CONNECTIONS
Outdoor sensor connection
- Introduce the outdoor sensor wires
- Loosen the cable clamp using a screwdriver and insert the
wires leading from the outdoor sensor one at a time.
- Connect the wires to the terminals as indicated in the gure
below;
- Make sure that they are well connected and that they are
not subject to stress when the control panel lid is opened or
closed;
- Close the ap again, then replace the control panel cover
and the front casing.
- Refer to page 40 for setting the parameters when using the
outdoor sensor.
Note: wheN coNNectiNg the boiler to exterNal coNtrols, do
Not ruN 240V cables aNd cables for switchiNg circuits
(
which are low Voltage) together, use seperate cables to
preVeNt iNduced Voltage oN the low Voltage circuits.
Connector SE on PCB
Outdoor Sensor
Connector TA on PCB
(low voltage switching)
Connector TA on PCB
(low voltage switching)
Connector TA on PCB
(low voltage switching)
Cylinder connection (CLAS SYSTEM ONE)
The boiler can be connected to a central heating system
that uses two zone valves to allow connection to an indirect
storage cylinder.
There are two wiring diagrams shown, one for the connection
to an Unvented Cylinder and one for connection to an open
vented cylinder.
In both cases the boiler connection is shown as TA1.
When connecting the boiler to an external cylinder do not run
240V cables and the cables for the TA1 together, use separate
cables to prevent induced voltage on the low voltage
switching circuit.
Note: the use of a ‘y’ plaN system is Not possible with the
clas system oNe boiler due to the low Voltage switchiNg of
the appliaNce uNless suitable relay coNtrols are used.
Important!!
Ensure that a balancing valve is tted on the cylinder return
and balanced correctly at commissioning stage.
(see p.25)
/ 31
INSTALLATION
Earths omitted for clarity
R/STAT
REMOTE 2 CHANNEL PROGRAMMER
TERMINAL
STRIP
C/H
2 PORT VALVE
240V
3AMP
L
N
E
L N
Remove
Links
CYL STAT
ON OFF
L
N
H/W
2 PORT
VALVE
Outside sensor
Boiler
Change parameter:
223 from 0 to 1
521 from 1 to 3
421 from 1 to 0
Activate Auto Function
BUS TA2 SE TNK SOL TA1
Note: Boiler switching on TA1 & TA2 is low
voltage. Use a separate cable to supply TA1 &
TA2. Do not mix high voltage and low voltage
wires in the same cable.
MOTOR
N
L
MOTOR
ON
OFF
S plan wiring diagram using an outside sensor.
32 /
COMMISSIONING
Initial preparation
Ariston Thermo UK Ltd support the benchmark initiative.
On pages 77 and 78 of this manual the Benchmark
Commissioning Checklist and Service interval Record can be
found. It is important that this is completed in the presence of
your customer, they are shown how to use it, and it is signed by
them. Please instruct your customer that they must have this
manual with them whenever they contact a service engineer
or us.
Preliminary electrical system checks to ensure electrical safety
must be carried out by a competent person i.e. polarity, earth
continuity, resistance to earth and short circuit.
Electricity supply
- Check that the voltage and frequency of the electricity supply
correspond to the data shown on the boiler data plate;
- Make sure that the earthing connection is efcient.
Filling the Heating System:
ATTENTION!!
CONNECT THE PIPE OF CONDENSATE DISCHARGE
BEFORE REFILLING AND THE DE-AERATION OF THE
HEATING CIRCUIT.
Remove the front casing panel and lower the control panel as
described on page 15.
Open the central heating flow and return cocks supplied with
the connection kit;
Open the manual air vent positioned at the side of the primary
exchanger (2). The valve is already connected to a discharge
pipe related to the condensate trap.
Close all air release valves on the central heating system;
Gradually open the valves at the filling point (filling loop) until
water is heard to flow, do not open fully;
Open each air release tap starting with the lowest point and
close them only when clear water free of air is visible;
Continue filling the system until at least 1.5 bar registers on the
pressure gauge;
Inspect the system for water tightness and remedy any leaks
discovered.
importaNt!
maNually VeNt the heat exchaNger at the maNual air VeNt. failure
to VeNt adequately may damage the heat exchaNger (page 9, legeNd
2).
Filling of the DHW System:
Close all hot water draw off taps;
Open the cold water inlet cock supplied with the connection kit;
Slowly open each draw off tap and close them only when clear
water, free of bubbles, is visible.
Gas Supply:
Inspect the entire installation including the gas meter and test
for tightness. The entire installation should be in accordance
with the relevant standards. In GB this is BS 6891 and in IE this
is the current edition of I.S.813.
The connection on the the appliance is a 15mm (22mm on
38Kw) nut and olive located at the rear of the gas service cock.
If the gas supply serves other appliances, ensure that an
adequate supply is available both to the boiler and the other
appliances when they are in use at the same time.
Pipe work must be of an adequate size. The final pipe size
must not be smaller than the appliance inlet size.
Open the gas cock (supplied with the connection kit) to the
appliance and check the gas connection on the appliance for
leaks.
Water Treatment:
The boiler is equipped with a stainless steel heat exchanger.
The detailed recommendations for water treatment are given
in BS 7593 (Treatment of water in domestic hot water central
heating systems); the following notes are given for general
guidance;
If the boiler is installed on an existing system, any unsuitable
additives must be removed;
Under no circumstances should the boiler be fired before the
system has been thoroughly flushed; the flushing procedure
must be in line with BS7593.
Firstly fill the central heating system with the power off, and
flush through cold, fill the central heating system again, adding
a flushing detergent, run the boiler on central heating until it
reaches its operating temperature and flush the system, refill
the system with a suitable corrosion inhibitor,
Note: Failure to carry out the FlushiNg procedure will result iN the
warraNty becomiNg void.
2
34 /
COMMISSIONING
Ignition procedure
Press the ON/OFF button on the control panel to switch on the
boiler. The display shows:
● the operating mode:
winter
summer
Only heating - CLAS SYSTEM ONE
● The gures indicate:
-
the ow temperature when no heating requests have been made
- the ow temperature in central heating mode
-
the temperature of the hot water set in domestic hot water
The carrying out of certain functions is shown:
Deaeration cycle started
Centrl Heating Post-circulation
D.H.W. circuit Post-circulation
Electricity supply
- Check that the voltage and frequency of the electricity supply
correspond to the data shown on the boiler data plate;
- Make sure that the earthing connection is efcient.
First ignition
1. Make sure that:
- The gas valve is closed;
- The electrical connection has been properly carried out.
Make sure that, in any case, the green/yellow earthing wire
is connected to an efcient earthing system;
- Use a screwdriver to lift the cap on the automatic air relief
valve;
- Switch on the boiler (by pressing the ON/
OFF button) and use the
mode button to
select the standby mode, where no hot
water or heating requests are made.
- Start the deaeration cycle by pressing
mode for 5 seconds
The boiler will start a deaeration cycle
lasting about 7 minutes (See below). If
you need to stop it press mode. During the deaeration cycle
open the manual air vent (2) on the heat exchanger and
close when clear water free of air is visible.
- At the end, check that the system is completely deaerated
and, if not, repeat the procedure.
- Bleed the air from the radiators;
- The exhaust duct for combustion products should be suitable
and free from any obstructions;
- Any necessary ventilation inlets in the room should be open
(type B installation).
- Check whether the condense trap contains water; if not, it
must be relled. If necessary, open the manual air vent on
the main exchanger until complete lling.
N.B.: if the boiler will not be used for long periods, the
trap should be lled before the boiler is started up again.
It is dangerous not to rell the siphon as fumes may be
released into the environment.
2. Open the gas cock and check the connection seals, including
the boiler connection joints, making sure that the meter does
not detect any passage of gas. Eliminate any leaks.
3. Start the boiler by selecting the heating or domestic hot
water operation using the
mode button.
Description of Function
Deaeration cycle
During the lling stage or if there is excess air in the system,
the deaeration cycle can be activated by holding the mode
button for 5 seconds. The boiler will start a cycle which lasts
approximately 7 minutes. When this is complete the menu screen
will be restored. The cycle may either be repeated, if necessary,
or stopped by pressing mode. Press the mode button until the
normal display screen is restored.
if the cycle is stopped be sure to
maNually VeNt the appliaNce.
/ 35
COMMISSIONING
Combustion checking procedure
The order of operations for this procedure must always be
respected.
Refer to Technical Bulletin 143 on Gas Safe Register website for
further information on combustion analysis of domestic boilers.
Operation 1 - Supply pressure check
Loosen the screw 1 and insert the pressure gauge connection
pipe into the pipe tap.
Switch the boiler on at maximum power.
To activate combustion test function:
- Press the mode selector to ensure the
icons displayed.
- Press & hold the reset button for 10 seconds. ‘
’ will
appear on the screen. Ensure the boiler is on max power by
pressing the button 2
.
The supply pressure should correspond to the value established
in relation to the type of gas ,for which the boiler is designed see
Table summarising changes.
Note:
The absolute minimum working pressure measured at the inlet
test nipple on the gas valve is 17.5 mbar.
Operation 2 - Preparing the measuring equipment
Connect the calibrated ue gas analyser to the left-hand
combustion outlet by unscrewing the screw and removing the
blanking cover.
Operation 3 - Adjusting the CO2 at maximum gas ow rate
(domestic hot water)
Draw off the domestic hot water at the maximum water ow rate
(if a combi).
Select the Test function by pressing the
RESET button for 10 seconds.
WARNING! When the cleaning function is activated, the
temperature of the water coming out of the boiler may be
more than 65°C.
On the display appear
and the icon
. The boiler is foced to the maximum
heating power.
Press the 2
button to forced the boiler at
the maximum DHW power. On the display
appear the icon
.
Wait 1 minute for the boiler to stabilise before
carrying out the combustion analyses.
Read the CO2 value (%) and compare it with the values given in
the table below
N.B.: VALUES WITH THE CASING CLOSED.
If the CO2 value (%) read differs from the values given in the
table, then adjust the gas valve following the instructions below,
otherwise move directly onto operation 4.
Adjusting the gas valve at maximum gas ow
Adjust the gas valve by turning setting screw 4 clockwise in
increments to reduce the CO2 level (a 1 turn adjusts the CO2
level by approximately 0.2%). Wait 1 minute after each change in
setting for the CO2 value to stabilise.
If the value measured corresponds to the value given in the
table, max adjustment is complete, otherwise start the setting
procedure again.
N.B. The Test function is automatically deactivated after 10
minutes or manually by briey pressing the RESET button.
Operation 4 - Checking the CO2 at minimum gas ow
With the Test function active, press the 2
button to select the icom and
. The boiler is forced to the minimum power.
Wait 1 minute for the boiler to stabilise before
carrying out the combustion analyses.
If the
CO2 value (%) read differs by 0.5 %
from the value found, then adjust the gas valve following the
instructions below, otherwise move directly onto operation 5.
Adjusting the gas valve to minimum gas ow
Remove
cap and adjust screw 2 by turning anti-clockwise in
increments to reduce the CO2 level. Wait 1 minute after each
adjustment for the CO2 value to stabilise.
WARNING! this adjustment is sensitive: a rotation of a 1 turn
corresponds to 0.2% of CO2.
1 32 4
2
4
1
CLAS NET ONE 24 / 30 /38
CLAS ONE 24 / 30 / 38
CLAS SYSTEM ONE 18 / 24 / 30
Gas CO
2
(%) MAX CO
2
(%) MIN
G20 8,7% ÷ 9,7% 8,4% ÷ 9,4%
G31 9,5% ÷ 10,5%
ATTENTION! CO
2
max – CO
2
min > 0,5%
1 32 4
4
36 /
COMMISSIONING
If the value measured corresponds to the value given in the
table, adjustment is complete, otherwise start the setting
procedure again.
Attention! If the value of the CO2 at the minum power has
been changed, it is necessary repet the adjusting at maximum
gas ow.
Operation 5 - Ending the adjustment
Exit cleaning mode by pressing RESET.
Stop the draw-off.
Verify and repair any leaks of gas.
Ret the front panel to the device.
Ret the blanking cover at combustion test point.
menu 2 - Boiler parameters
submenu 3 - parameter 1 Maximum Heating Power adjustment
submenu 2 - parameter 0
Soft light Ignition
submenu 3 - parameter 5 Heating ignition delay
Maximum Heating Power adjustment
The maximum heating power can be adjusted to between the
maximum power allowed by the boiler and the minimum power).
The display shows the value between 100% (“100” on the
display) and 0% (“0”) of this interval.
To check the maximum heating power, access menu 2/sub menu
3/parameter 1, check the value and, if necessary, modify it as
indicated in the Gas Regulation table below. (See page 40 for
more details).
Checking slow ignition power
The soft light can be adjusted between the maximum power
(shown on the display as “100”, i.e. 100%) and the minimum
power (shown on the display as “1”, i.e. 1%).
To check the slow ignition power, access menu 2/sub menu 2/
parameter 0.
Heating ignition delay adjustment
This parameter – menu 2/sub menu 3/parameter 5 - can be used
to manually (0) or automatically (1) set the delay time before the
subsequent reignition of the burner after it has switched off on
reaching the desired temperature in central heating mode.
By selecting manual, it is possible to set the delay in minutes
using the successive parameter (menu 2/sub menu 3/parameter
6), to a time between 0 and 7 minutes.
Automatic selection means that the boiler will establish the
delay time based on the set-point temperature
30,2
27,4
17,6
21,4
3,4
3,9
4,7
CLAS ONE / CLAS NET ONE / SYSTEM 30
CLAS ONE / CLAS NET ONE /SYSTEM 35
CLAS ONE SYSTEM 18
CLAS ONE / CLAS NET ONE / SYSTEM 24
1 32 4
2
Table summarising changes
parameter
CLAS NET ONE / CLAS ONE
CLAS SYSTEM ONE
18 24 30 38
G20 G31 G20 G31 G20 G31 G20 G31
Lower Wobbe index (15°C, 1013 mbar)
( MJ/m
3
)
45,67 70,69 45,67 70,69 45,67 70,69 45,67 70,69
Inlet Gas pressure
20 30-37 20 30-37 20 30-37 20 30-37
Slow ignition 220
98 64 62 62
Maximum C. H.power Adjustable (%) 231
60 56 60 60
Minimum power (%) 233
3 3 3 5
Max CH power (%) 234
60 75 84 85
Max DHW power (%) 232
60 90 90 100
Gas diaphragm ((Ø) mm 5,0 (*) 3,6 5,0 (*) 3,6 5,8 (*) 4,0 6,8 (*) 4,7
Gas ow max/min
(15°C, 1013 mbar)
(nat - m3/h) GPL - kg/h)
max D.H.W 1,905 1,398 2,751 2,020 3,175 2,330 4,02 2,95
max C.H 1,905 1,398 2,328 1,709 2,963 2,175 3,28 2,41
min 0,391 0,287 0,391 0,287 0,455 0,334 0,5 0,43
(*) Gas diaphragm integrated in the air/gas mixer
(NON-REMOVABLE)
/ 39
BOILER PROTECTION DEVICES
Anti-frost Device.
The anti-frost function acts on the central heating ow tempe-
rature probe, independently from other regulations, when the
electrical supply is turned on.
If the primary circuit temperature is between 3°C and 8°C the
pump will run (with the diverter valve switching between cen-
tral heating and hot water every 1 minute) until the temperature
reaches > 9°C.
If the ow temperature remains between 3°C and 8°C the pump
will continue to run for a maximum of 20 minutes unless a tem-
perature above > 9°C is detected in the central heating ow, af-
ter this the the burner will re (heating position) until a tempera-
ture of > 30°C is detected.
If the central heating ow temperature is < 3°C, the burner will
re (heating position) at minimum power until the temperature
reaches > 35°C, the burner will go out.
If lockout is caused by overheat the burner will not re but the
pump will continue to run (heating position).
The anti-frost device activates only when (with the boiler opera-
ting correctly):
- the system pressure is correct;
- the boiler is electrically powered;
- there is a supply of gas.
Ignition and Detecion
5 01
No ame detected
5 02
Flame detected with gas valve closed
5 04
Flame lift
5 P1
1st Ignition Failed
5 P2
2nd Ignition Failed
5 P3
Flame cut-off
Air Inlet / Flue gas outlet
6 10
Overheat (Main heat exchanger)
6 12
Insufcient fan speed
Multi-zone Heating (Heating Zone Modules - optional)
7 01
Zone 1 send sensor defective
7 02
Zone 2 send sensor defective
7 03
Zone 3 send sensor defective
7 11
Zone 1 return sensor defective
7 12
Zone 2 return sensor defective
7 13
Zone 3 return sensor defective
7 22
Zone 2 overheating
7 23
Zone 3 overheating
7 50
All Heating Zones locked
/ 41
SETTINGS - ADJUSTMENT - PROBLEM IDENTIFICATION MENUS
menu
sub-menu
Parameter
Description value
default setting
SERVICE CODE
Press
the button “+”
to select code 234 and press ok. Turn the encoder to select MENU and press OK button
0 NETWORK
0 4 DISPLAY SETTING
0 4 0 Zone to be set by display 1 = 1 Zone
2 = 2 Zone
3 = 3 Zone
1
0 4 1 Backlight timing
from 0 to 10 (minutes) or 24
(hour)
24
0 4 2 Thermoregulation button deactivation 0 = OFF
1 = ON
0
2 BOILER PARAMETER SETTING
2 0
GENERAL
2 0 0
DHW Setpoint Temperature from 36 to 60 (°C) Setting by DHW button 2
2 0 1
DHW Pre-heating 0 = OFF
1 = ON
RESERVED FOR TECHNICAL
ASSISTANCE
Only if the PCB is changed
2 1 BOILER PARAMETERS
2 0 0
Boiler circulator type (NOT ACTIVE)
2 2 BOILER GENERAL SETTINGS
2 2 0 Soft ignition from 0 to 90 60 See parag. Gas settings
2 2 3 Underoor thermostat or zone 2 ambient
thermostat selection
0 = Floor safety thermostat
1 = Zone 2 ambient thermostat
0
2 2 4 Thermoregulation 0 = Absent
1 = Present
0
2 2 5 Heating ignition delay 0 = Deactivated
1 = 10 seconds
2 = 90 seconds
3 = 210 seconds
0
2 2 8 Boiler Version - CLAS ONE / CLAS ONE NET
CANNOT BE MODIFIED
from 0 to 5 0
RESERVED FOR TECHNICAL
ASSISTANCE
Only if the PCB is changed
Boiler Version - CLAS SYSTEM ONE
CANNOT BE MODIFIED
from 0 to 5 2
2 2 9 Set boiler heat power
2 3 BOILER PARAMETER - PART 1
2 3 1 Maximum heating power setting from 0 to 99 60 see the “Gas setting” table,
information on Starting
2 3 2 Domestic hot water maximum percentage
CANNOT BE MODIFIED
from 0 to 99
RESERVED FOR TECHNICAL
ASSISTANCE
Only if the gas or PCB is
changed
see “gas setting” table
2 3 3 Minimum percentage
CANNOT BE MODIFIED
from 0 to 99
2 3 4 Heating maximum percentage
CANNOT BE MODIFIED
from 0 to 99
2 3 5 Selection of ignition delay type when
heating
0 = Manual
1 = Automatic
1
2 3 6 Ignition delay when heating timer setting from 0 to 7 (minutes) 3
2 3 7 Post-circulation when heating from 0 to 15 minutes or OC (AC) 3
2 3 8 <Not Available>
2 3 9 <Not Available>
/ 49
MAINTENANCE GUIDE
2. ELECTRICAL UNIT
2.1 Control box access
Tools
TIME
4 min
Remove the front panel as above and pivot the electricl box
1
Unhook the two clip and remove the cover
2
3
2.2 Fuse
Tools
TIME
5 min
Open the control box as above
1
Remove the fuse
2
3
50 /
MAINTENANCE GUIDE
2.3 Main P.C.B.
Tools
TIME
5 min
After opening the control box, disconnect the elctrical plug
connections
1
Unhook and remove the P.C.B.
2
2.4 Display P.C.B.
Tools
TIME
5 min
Unscrews the two screws and pull the assembly towards you
1
Disconnect the elctrical plug connections and unhook and
remove the P.C.B.
2
3
/ 51
MAINTENANCE GUIDE
2.5 Time clock
Tools
TIME
5 min
Unscrews the two screws and pull the assembly towards you
1
Disconnect the elctrical plug connections.
Unscrew the four screws and remove the Time clock.
2
3
52 /
MAINTENANCE GUIDE
3. HYDRAULIC UNIT
3.1 RIGHT HAND HYDRAULIC BLOCK ASSEMBLY
1
2
3
4
10
11
6
7
8
9
Legend:
1 - Diverter valve motor
2 - Diverter valve
3 - D.H.W. ow switch assembly
4 - C.H. drain valve
6 - Central heating lter
7 - Pump
8 - Primary water pressure switch
9 - Auto air vent
10 - Central Heating return
11 - Cold water inlet (D.H.W.)
3.2. 3 Way valve unit
Tools
TIME 5 min
Drain the boiler (see 3.3).
Unplug the diverter valve cable
1
Rotate clockvise to unhook the locking ring.
2
Remove the 3 way valve motor.
3
Remove the clip and lift the diverter valve from the assem-
bly.
4
WHEN REASSEMBLING, ENSURE THE DIVERTER VALVE IS
ALIGNED CORRECTLY.
/ 53
MAINTENANCE GUIDE
3.3 Draining
Tools
TIME
5 min
Turn the drain valve anti-clockwise to open and drain the
water from the boiler
1
3.4 Automatic air vent
Tools
TIME
5 min
Drain the boiler (see 3.3).
Unscrew anticlockwise the AAV from the assembly.
1
2
3.5 Primary water pressure sensor
Tools
TIME
5 min
Drain the boiler (see 3.3).
Slide the xing clip, (it is held captive) unplug the electrical
connector and lift the sensor from the assembly.
1
2
54 /
MAINTENANCE GUIDE
3.6 Pump
Tools
TIME
10 min
Drain the boiler (see 3.3). Remove the clip and the two screws
1
Disconnect the pipe and then move the pump to the right to
disengage
2
Remove the pump
3
Remove the sensor (see 3.5)
4
Remove the AAV (see 3.4)
5
6
/ 55
MAINTENANCE GUIDE
3.8 D.H.W. Flow switch assembly
Tools
TIME
10 min
Drain the boiler (see 3.3). Remove the clip and pull the ow
switch assembly upward.
1
2
3.7 C.H. Filter
Tools
TIME
5 min
Drain the boiler (see 3.3).
Remove the clip and remove the pressure gauge
1
2
Remove the clip and remove the lter
3
4
56 /
MAINTENANCE GUIDE
3.10 Secondary heat exchanger
Tools
TIME
10 min
Drain primary and domestic hot water circuits.
Remove the silencer.
1
Remove the two screws and remove the heat exchanger
2
3.9 LEFT HAND HYDRAULIC BLOCK ASSEMBLY
1
2
3
4
Legend:
1 - By-pass assembly
2 - Safety valve
3 - Central heating ow
4 - Domestic hot water outlet
3
4
5
/ 57
MAINTENANCE GUIDE
3.11 Condensate trap
Tools
TIME
5 min
Disconnect the condensate discherge pipe from the bottom of
the boiler. Unscrerw the two screws.
1
Disconnect the condensate pipe from the condensate trap
2
3
3.12 Safety valve
Tools
TIME 5 min
Drain the boiler (see 3.3). Disconnect the discharge pipe.
Remove the st clip on the left and pull the safety valve
towards you
1
2
58 /
MAINTENANCE GUIDE
3.14 By-pass assembly
Tools
TIME 5 min
Drain the boiler (see 3.3). Remove the clip and pull the as-
sembly towards you
1
2
3
3.15 Temperature sensors
Tools
TIME 5 min
NTC1 : Black
NTC2: Red
1
Unplug the electrical connectors
2
Remove the clip and the temperature sensor
IMPORTANT ! Do not use conducting paste for the
contact sensors because it will alter the resistance value.
TEMPERATURE RESISTANCE (kOhm)
0 27
10 17
20 12
25 10
30 8
40 5
50 4
NTC1
NTC2
/ 59
MAINTENANCE GUIDE
3.16 Manual Air vent
Tools
TIME
5 min
Drain boiler (see 3.3)
Unscrew and lift the manual air vent from the exchanger
1
2
3.17 Main heat exchanger
Tools
TIME
20 min
Drain boiler (see 3.3)
Remove the silencer
1
Isolate the gas supply and disconnect the gas pipe.
2
60 /
MAINTENANCE GUIDE
Disconnect the cable of the electrode.
Remove the four nuts and remove the burner unit
3
4
Remove the two clips to disconnet the exhanger on the hea-
ting ow side
5
Disconnect the plastic pipes from the manual air vent.
6
Disconnect the heating ow pipe
7
Disconnect the condensate pipe
8
/ 61
MAINTENANCE GUIDE
Unscrew the four screws to remove the heat exchanger
9
10
11
62 /
MAINTENANCE GUIDE
4. BURNER UNIT
Legend:
1 - Ceramic bre
2 - Burner
3 - Silencer
4 - Mixing tube
5 - Fan
6 - Detection/Ignition electrode
1
2
3
4
6
5
/ 63
MAINTENANCE GUIDE
4.1 Electrode (detection and ignition)
Tools
TIME
5 min
Unplug the electrode on the control box
Remove the screws and pull the electrodes towards you.
1
2
4.2 Burner
Tools
TIME
15 min
Remove the silencer
1
Isolate the gas supply. Disconnect the gas pipe.
2
64 /
MAINTENANCE GUIDE
Pull the assembly towards you
3
Remove the two screws and remove the electrode
4
5
4.3 Fan
Tools
TIME
15 min
Remove the silencer (see 4.3 - 1)
Isolate the gas supply.
Disconnect the gas pipe (see 4.3 - 2)
1
Remove the ceramic bre.
Remove the four screws and pull the burner toward you.
Always replace the burner gasket (*).
6
Verify and replace the other gaskets if they are damaged
or showing signs of deterioration
(*)
66 /
MAINTENANCE GUIDE
5. ANNUAL MAINTENANCE
Plate heat exchanger
Maintenance Interval: As necessary
How: To measure specication of DHW performance.
By-pass & Safety valve
Maintenance Interval: Annually
How: Visual inspection / Clean as necessary
Central heating lter
Maintenance Interval: Annually
How: Visual inspection / Clean as necessary
Flow switch operation
Maintenance Interval: Annually
How: Visual inspection / Clean as necessary / Check ow rate
Expansion vessel
Maintenance Interval: Annually
How: Check air pressure is at 15 psi (System drained)
Ignition & detection electrode
Maintenance Interval: Annually
How: Visual inspection / Clean as necessary / Distance from the burner / Ionisation current
more than 1 μA
Burner
Maintenance Interval: Annually
How: Visual inspection / Clean as necessary
Fan
Maintenance Interval: Annually
How : Visual inspection / Clean as necessary
/ 67
MAINTENANCE GUIDE
Primary Heat exchanger
Maintenance Interval: Annually
How : Visual inspection / Clean as necessary
Condensate trap
Maintenance Interval: Annually
or after cleaning primary heat exchanger
How : Visual inspection / Clean as necessary /
Add water before replacing
Pump
Maintenance Interval: At the rst ignition and annually
How: Check that the AAV is open /
Visual inspection / Clean as necessary
68 /
TECHNICAL DATA
GENERAL
NOTE
Model:
CLAS ONE
CLAS NET ONE
24
30
38
CE Certication (pin)
0085CR0393
Boiler type
C13(X)-C23-C33(X)-C43(X)-C53(X)-
C63(X)C83(X)-C93(X) B23-B23P-B33
POWER SPECIFICATIONS
Max/min nominal caloric ow rate (Hi) Qn kW
22,0 / 3,7 28,0 / 4,3 31,0 / 5,5
Max/min nominal caloric ow rate (Hs) Qn kW
24,4 / 4,1 31,1 / 4,8 34,4 / 6,1
Domestic hot water max/min nominal caloric ow rate (Hi) Qn kW
26,0 / 3,7 30,0 / 4,3 38,0 / 5,5
Domestic hot water max/min nominal caloric ow rate (Hs) Qn kW
28,9 / 4,1 33,3 / 4,8 42,2 / 6,1
Max/min power output (80°C-60°C) Pn kW
21,4 / 3,4 27,4 / 3,9 30,2 / 5,2
Max/min power output (50°C-30°C) Pn kW
23,6 / 3,9 30 / 4,5 33,5 / 5,8
Domestic hot water max/min power output Pn kW
24,9 / 3,5
28,7 / 4,1 36,3 / 5,3
Combustion efciency (of ue gas) %
98,0 98,0 97,9
Nominal caloric ow rate efciency (60/80°C) (Hi) %
97,5 / 87,8 97,9 / 88,2 97,5 / 87,8
Nominal caloric ow rate efciency (30/50°C) (Hi) %
107,3 / 96,7 107,3 / 96,6 108,2 / 97,4
Efciency at 30% at 30°C %
109,8 / 98,9 109,6 / 98,7 109,7 / 98,8
Minimum caloric ow rate efciency (60/80°C) (Hi) %
93,1 / 83,8 91,1 / 82 94,4 / 85,0
Efciency rating (dir. 92/42/EEC) stars
★★★★
Sedbuk class A/90 A/90 A/90
Loss of burner gas when operating %
2,0 2,0 2,1
EMISSIONS
Available air pressure Pa 100 100 100
NoX class
class
5
Flue gas temperature (G20) (80°C-60°C)
°C
61 62 63
CO2 content (G20) (80°C-60°C) max / min
%
9,2 / 8,9
CO content (0%O2) (80°C-60°C)
ppm 141,8
123,8
106
O2 content (G20) (80°C-60°C)
%
3,9 4,2 4,3
Maximum ue gas ow (G20) (80°C-60°C)
Kg/h
42,1 48,6 61,3
Excess air (80°C-60°C)
%
23 25 26
HEATING CIRCUIT
Expansion chamber ination pressure
bar
1
Maximum heating pressure
bar
3
Expansion chamber capacity
l
8
Min/max heating temperature (high temperature range)
°C
35 / 82
Min/max heating temperature (low temperature range)
°C
20 / 45
DOMESTIC HOT WATER
CIRCUIT
Domestic hot water min/max temperature
°C
36 / 60
Specic ow rate of domestic hot water (ΔT=30°C)
l/min
12,1 14,5 18,1
Quantity of hot water ΔT=25°C
l/min
14,5 17,4 21,8
Quantity of hot water ΔT=35°C
l/min
10,4 12,5 15,5
Hot water comfort rating (EN13203)
stars
★★★
Hot water minimum ow rate
l/min
2,0 2,0 2,0
Domestic hot water max/min pressure
bar
7 / 0,2
ELECTRICAL
Power supply frequency/voltage
V/Hz
230 / 50
Total electrical power absorbed
W
77 83 84
Minimum ambient temperature for use
°C
+5
Protection level for the electrical appliance
IP
X5D
Weight
kg
29,7 32,3 34,6
ITALIAN DESIGN
Ariston Thermo UK Ltd
Artisan Building
Hillbottom Road
High Wycombe
Bucks HP124HJ
Telephone: 01494 418500
Customer Service: 0333 240 8777
ariston.co.uk
420010818500
… 64 …

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