Handleiding Viessmann VITODENS 100-W - 2023 (pagina 11 van 44) (Engels)

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Operating instructions

for the system user

VIESMANN

Wall mounted gas boiler with black/white screen

VITODENS 100-W/111-W

6167584 GB 11/2023 Please keep safe.

Please follow these safety instruc-

tions closely to prevent accidents

and material losses.

Safety instructions explained

Danger

This symbol warns against the risk

of injury.

!Please note

This symbol warns against the risk

of material losses and environmen-

tal pollution.

Note

Details identified by the word "Note"

contain additional information.

Target group

These operating instructions are

designed for heating system users.

This appliance can also be operated by

children aged 8 and older, as well as by

individuals with reduced physical, sen-

sory or mental faculties or those lacking

in experience and knowledge, provided

such individuals are supervised or have

been instructed in the safe use of this

appliance and any risks arising from it.

!Please note

Supervise children in the proximity

of the appliance.

■Never permit children to play with

the appliance.

■Cleaning and user maintenance

must never be carried out by

unsupervised children.

Safety instructions for working on the system

Connecting the appliance

■The appliance may be connected and

commissioned only by authorised con-

tractors.

■Only operate the appliance with suita-

ble fuels.

■Observe the specified electrical con-

nection requirements.

■Modifications to the existing installation

may only be carried out by authorised

specialists.

Danger

Incorrectly executed work on the

heating system can lead to life

threatening accidents.

■Work on gas installations may

only be carried out by a registered

gas fitter.

■Work on electrical equipment may

only be carried out by a qualified

electrician.

Safety instructions

For your safety

6167584

Working on the appliance

■All settings and work on the appliance

must be performed as specified in

these operating instructions.

Further work on the appliance may be

carried out only by authorised contrac-

tors.

■Do not open the appliance.

■Do not remove casings.

■Do not modify or remove attachments

or fitted accessories.

■Do not open or tighten pipe connec-

tions.

Danger

Hot surfaces can cause burns.

■Do not open the appliance.

■Never touch the hot surfaces of

uninsulated pipes, fittings or flue

pipes.

Auxiliary components, spare and

wearing parts

!Please note

Components not tested with the

heating system may damage the

system or affect its function.

Have all installation or replacement

work carried out exclusively by your

contractor.

Safety instructions for operating the system

Damage to the appliance

Danger

Damaged equipment poses a

safety hazard.

Check the appliance for external

damage. Never start up a damaged

appliance.

If you smell gas

Danger

Escaping gas can lead to explo-

sions which may result in serious

injury.

■No smoking! Prevent naked

flames and sparks. Never switch

lights or electrical appliances on

or off.

■Close the gas shut-off valve.

■Open windows and doors.

■Evacuate any people from the

danger zone.

■Notify your gas and power supply

utility and your local heating con-

tractor from outside the building.

■Have the power supply to the

building shut off from a safe place

(outside the building).

Safety instructions

For your safety (cont.)

6167584

If you smell flue gas

Danger

Flue gas can lead to life threatening

poisoning.

■Shut down the heating system.

■Ventilate the installation site.

■Close all doors in the living space.

If there is a fire

Danger

Fire presents a risk of burns and

explosion.

■Shut down the heating system.

■Close the shut-off valves in the

fuel supply lines.

■Use a tested fire extinguisher,

class ABC.

If water escapes from the appliance

Danger

If water escapes from the appliance

there is a risk of electric shock.

■Shut down the heating system at

the external isolator (e.g. fuse

box, domestic distribution board).

■Please notify your contractor.

If the heating system develops a fault

Danger

Fault messages indicate faults in

the heating system. If faults are not

rectified, they can have life threat-

ening consequences.

Do not acknowledge fault mes-

sages several times in quick suc-

cession. Notify contractor so the

cause can be analysed and the

fault rectified.

Installation room requirements

Danger

Sealed vents result in a lack of

combustion air. This leads to incom-

plete combustion and the formation

of life threatening carbon monoxide.

Never cover or close existing vents.

Do not make any subsequent modi-

fications to the building characteris-

tics that could affect safe operation

(e.g. cable/pipework routing, clad-

ding or partitions).

Danger

Easily flammable liquids and mate-

rials (e.g. naphtha/petrol, solvents,

cleaning agents, paints or paper)

can cause deflagration and fire.

Never store or use such materials

in the boiler room or in direct prox-

imity to the heating system.

!Please note

Incorrect ambient conditions can

lead to heating system damage and

can put safe operation at risk.

■Maintain the permissible ambient

temperatures as detailed in these

operating instructions.

■Prevent air contamination by halo-

genated hydrocarbons (e.g. as

contained in paints, solvents or

cleaning fluids) and excessive

dust (e.g. through grinding/polish-

ing work).

■Avoid continuously high humidity

levels (e.g. through continuous

drying of washing).

Safety instructions

For your safety (cont.)

6167584

Extractors

The operation of appliances that extract

air to the outside (cooker hoods, extrac-

tors, air conditioning units, etc.) can cre-

ate negative pressure. If the boiler is

operated at the same time, this can lead

to a reverse flow of flue gas.

Danger

The simultaneous operation of the

boiler and appliances that extract

air to the outside can result in life

threatening poisoning due to a

reverse flow of flue gas.

Take suitable steps to ensure an

adequate supply of combustion air.

If necessary, contact your contrac-

tor.

Safety instructions

For your safety (cont.)

6167584

1. Liability ................................................................................................................ 8

2. Introductory information Symbols ................................................................................................. 9

Terminology ........................................................................................... 9

Intended use .......................................................................................... 10

Product information ................................................................................ 10

■Weather-compensated operation ....................................................... 10

■Constant operation with time program ................................................ 10

■Room temperature-dependent operation ........................................... 10

■Individual room control with/without modulation ................................. 11

■Operation ............................................................................................ 11

Permissible ambient temperatures in the installation room ................... 11

Software licences ................................................................................... 11

Commissioning ...................................................................................... 11

Your system is preset ............................................................................ 12

Energy saving tips ................................................................................. 13

Tips for greater comfort ......................................................................... 13

3. Operation Operating principles ............................................................................... 14

■Status display with Lightguide ............................................................ 14

Displays ................................................................................................. 14

■Standby .............................................................................................. 14

■Home screen ...................................................................................... 14

■Default displays .................................................................................. 14

■Buttons and symbols .......................................................................... 15

Overview of main menu ......................................................................... 15

■Calling up the main menu ................................................................... 16

Operating programs for central heating and DHW heating ................... 16

4. Time programs Time programs and time phases ........................................................... 17

Procedure for setting a time program .................................................... 17

Adjusting a time program for central heating . .................................... 18

Adjusting a time program for DHW heating . ...................................... 19

5. Central heating Factory settings for the temperature levels ............................................ 20

Switching on the central heating ............................................................ 20

Adjusting the temperature level for central heating . .......................... 20

Adjusting the heating curve . .............................................................. 20

Adjusting the room temperature for longer periods at home ................. 21

■Switching the holiday at home function on/off .................................... 21

Saving energy during long absences ..................................................... 21

■Switching the holiday program on/off .................................................. 22

Turning off central heating ..................................................................... 22

6. DHW heating Switching on DHW heating .................................................................... 23

Adjusting the temperature for DHW heating . ..................................... 23

Setting the Eco function for DHW heating ........................................ 23

Switching off DHW heating .................................................................... 23

7. Further settings Adjusting the display brightness . ....................................................... 24

Setting standby for the display . ......................................................... 24

Switching the "Lightguide" on and off . ............................................... 24

Setting the date . .............................................................................. 24

Setting the time . ................................................................................. 25

Switching internet access on or off ........................................................ 25

■Establishing a WiFi connection ........................................................... 25

■Switching the WiFi connection on or off .............................................. 25

Switching the wireless connection for the remote control on or off ........ 26

8. Checks Checking operating data . ................................................................... 27

Index

6167584

Checking licences for the integrated communication module ............... 27

■Calling up the license information for third party components ............ 27

■Third Party Software ........................................................................... 28

Checking WiFi information . ................................................................ 28

Checking fault messages .................................................................. 29

■Burner fault ..................................................................................... 29

9. Emissions test mode Switching emissions test mode on and off ........................................ 31

10. Switching on and off Switching the system off ........................................................................ 32

■With frost protection monitoring .......................................................... 32

■Without frost protection monitoring ..................................................... 32

Switching on the system ........................................................................ 32

11. What to do if... Rooms are too cold ................................................................................ 33

Rooms are too hot ................................................................................. 33

There is no hot water ............................................................................. 34

The DHW is too hot ............................................................................... 34

" " and the fault code are flashing ...................................................... 34

" " is shown ........................................................................................ 34

12. Maintenance Cleaning ................................................................................................. 35

Inspection and maintenance .................................................................. 35

■Appliance ............................................................................................ 35

■DHW cylinder ...................................................................................... 35

■Safety valve (DHW cylinder) ............................................................... 35

■Potable water filter (if installed) .......................................................... 35

Damaged cables / lines ......................................................................... 35

13. Appendix Terminology ........................................................................................... 36

■Operating program ............................................................................. 36

■Heating curve ..................................................................................... 36

■Heating circuit ..................................................................................... 37

■Heating circuit pump ........................................................................... 37

■Room temperature .............................................................................. 38

■Safety valve ........................................................................................ 38

■Temperature level ............................................................................... 38

■Set temperature .................................................................................. 38

■Drinking water filter ............................................................................. 38

■Flow temperature ................................................................................ 38

■Time program ..................................................................................... 38

Information on disposal .......................................................................... 38

■Disposal of packaging ........................................................................ 38

■Final decommissioning and disposal of the heating system ............... 39

14. Keyword index ................................................................................................................ 40

Index

Index (cont.)

6167584

No liability is accepted for loss of profit, unattained

savings, or other direct or indirect consequential losses

resulting from use of the WiFi interface integrated into

the system or the corresponding internet services. No

liability is accepted for losses resulting from inappropri-

ate use.

Liability is limited to typical damage arising if a funda-

mental contractual obligation is violated through slight

negligence, the fulfilment of which is essential for

proper execution of the contract.

The limitation of liability shall not apply if the damage

was caused deliberately or through gross negligence,

or if mandatory liability applies due to product liability

legislation.

The Viessmann General Terms and Conditions apply,

which are included in each current Viessmann pricelist.

The relevant data protection regulations and terms of

use apply to the use of Viessmann apps. Viessmann

accepts no liability for push notifications and email

services, which are provided by network operators.

The terms and conditions of the respective network

operators therefore apply.

Liability

6167584

Symbol Meaning

Reference to other document containing

further information

Step in a diagram:

The numbers correspond to the order in

which the steps are carried out.

Warning of personal injury

Warning of material losses and environ-

mental pollution

Live electrical area

Pay particular attention.

■Component must audibly click into place.

■Acoustic signal

■Fit new component.

■In conjunction with a tool: Clean the sur-

face.

Dispose of component correctly.

Dispose of component at a suitable collec-

tion point. Do not dispose of component in

domestic waste.

Terminology

To provide you with a better understanding of the func-

tions of your control unit, some terminology is

explained. This information can be found in chapter

"Terminology" in the Appendix.

Introductory information

Symbols

6167584

The appliance is intended solely for installation and

operation in sealed unvented heating systems that

comply with EN 12828, with due attention paid to

CECS 215-2017 and the associated installation, serv-

ice and operating instructions. It is only designed for

heating up heating water that is of potable water qual-

ity.

Intended use presupposes that a fixed installation in

conjunction with permissible, system-specific compo-

nents has been carried out.

The appliance is intended exclusively for domestic or

semi-domestic use; even users who have not had any

instruction are able to operate the appliance safely.

Commercial or industrial usage for a purpose other

than heating the building or DHW shall be deemed

inappropriate.

Any usage beyond this must be approved by the man-

ufacturer in each individual case.

Incorrect usage or operation of the appliance (e.g. the

appliance being opened by the system user) is prohibi-

ted and will result in an exclusion of liability. Incorrect

usage also occurs if the components in the heating

system are modified from their intended use (e.g. if the

flue gas and ventilation air paths are sealed).

Product information

The control unit is a boiler and heating circuit control

unit for the following operating modes:

■Weather-compensated operation

■Constant operation with time program

■Room temperature-dependent operation:

–Constant operation as option with room tempera-

ture controller

–OpenTherm controller

■Individual room control with/without modulation

Your heating contractor will configure the operating

mode during commissioning in accordance with your

heating system.

These instructions describe all 4 operating modes.

The setting options for room temperature-dependent

operation with an OpenTherm controller via the system

are limited:

OpenTherm controller operating instructions

Weather-compensated operation

In weather-compensated operation, the flow tempera-

ture level is controlled according to the outside temper-

ature. The lower the outside temperature, the higher

the flow temperature. This means that more heat is

provided for central heating on cold days than on

warmer days.

In weather-compensated operation, 1 heating circuit

without mixer and 1 heating circuit with mixer can be

operated with the control unit.

Constant operation with time program

In constant operation, the heat generator provides

heating water with a constant flow temperature regard-

less of the outside temperature.

Heating times are controlled by a time program.

In constant operation, 1 heating circuit without mixer

and 1 heating circuit with mixer can be operated with

the control unit.

Room temperature-dependent operation

In room temperature-dependent operation, the central

heating is switched on or off subject to the room tem-

perature. The flow temperature remains constant.

In room temperature-dependent operation, 1 heating

circuit without mixer can be operated with the control

unit.

Constant operation as option with room tempera-

ture controller

In constant mode with a room temperature controller,

the controller measures the room temperature and

compares it with the selected required room tempera-

ture. If the temperatures are different, the room tem-

perature is regulated to the required value.

Introductory information

Intended use

6167584

Note

The heating water temperature must be set high

enough in order to achieve the required room tempera-

ture.

Operating instructions for room temperature

controller

OpenTherm controller

In room temperature-dependent operation, the central

heating is switched on or off subject to the room tem-

perature. The flow temperature remains constant.

Individual room control with/without modulation

In individual room control mode with/without modula-

tion, specific rooms can be heated differently. The

ViCare climate sensors capture the room temperature

and compare it with the required room temperature

that has been set. If the temperatures are different, the

room temperature is regulated to the required value.

Once an internet connection has been successfully

established, operation is possible with the ViCare app.

ViCare thermostat operating instructions

www.vicare.info

Operation

The control unit is integrated into the heat generator

and controls all functions of your system. The control

unit is operated via a black/white screen.

A communication module is integrated in the control

unit. This allows the system to be remotely controlled

via the internet using the ViCare app (except when

operating via OpenTherm controller).

Permissible ambient temperatures in the installation room

!Please note

The appliance may develop faults if it is oper-

ated outside the specified temperature ranges.

Ensure that the specified temperature range is

maintained in the installation room.

To prevent malfunctions, ensure that the room is free

from the risk of frost, dry and heated.

Software licences

This product contains third party software, including

open source software. You are authorised to use this

third party software subject to compliance with the rel-

evant licensing terms.

Licences for the integrated communication module:

See page 27.

Commissioning

The commissioning and matching of the appliance to

local conditions and building characteristics, as well as

instructing the user in the operation of the system,

must be carried out by your contractor.

As the operator of new combustion equipment, you

may be obliged to notify the local flue gas inspector of

the installation without delay [check local regulations].

Your local flue gas inspector (where applicable) will

also provide you with information on additional activi-

ties concerning your combustion equipment (such as

regular testing, cleaning).

Introductory information

Product information (cont.)

6167584

Your heating system is preset at the factory and is

therefore ready for operation following commissioning

by your contractor:

Central heating in weather-compensated operation

■Between 06:00 and 22:00, rooms are heated to

20 °C (standard temperature level "n2").

■Between 22:00 and 06:00, rooms are heated to 3 °C

(reduced temperature level "n1", frost protection).

Central heating in constant operation

■Between 06:00 and 22:00, the set flow temperature

is 60 °C (standard temperature level "n2").

■Between 22:00 and 06:00, the set flow temperature

is 20 °C (reduced temperature level "n1", frost pro-

tection).

Central heating in room temperature-dependent

operation

■The rooms are heated in accordance with the set-

tings on your room temperature controller or Open-

Therm controller.

DHW heating

■Between 05:00 and 22:00, DHW is heated to 50 °C

(standard temperature level "n2"). Any installed

DHW circulation pump is switched on.

■Between 22:00 and 05:00, the DHW cylinder is not

reheated. Any installed DHW circulation pump is

switched off.

Note

Any DHW heating started before 22:00 remains on

until the set DHW temperature has been reached.

Frost protection

■Your heat generator and DHW cylinder (if installed)

are protected against frost.

The frost protection function is only possible when an

outside temperature sensor is connected. Frost pro-

tection function is active at outside temperatures

below 5 °C. The burner is switched on and the boiler

water temperature is held at 20 °C.

Wintertime/summertime changeover

■This changeover is automatic.

Date and time

■The date and time were set by your heating contrac-

tor.

You can change the settings at any time to suit your

individual requirements.

Power failure

All settings are retained if there is a power failure.

Introductory information

Your system is preset

6167584

Saving energy when using central heating

■Do not overheat your home. Every degree of room

temperature reduction saves up to 6 % on your heat-

ing bills.

Weather-compensated operation and room tempera-

ture-dependent operation:

Never set your standard room temperature (standard

temperature level "n2") higher than 20 °C.

■Heat your home to the reduced temperature at night

or during regular absences:

–Weather-compensated operation:

Reduced room temperature.

–Continuous operation and room temperature-

dependent operation:

Reduced flow temperature.

In constant operation, adjust the time program for

central heating: See page 18.

In room temperature-dependent operation, time pro-

grams for central heating can only be adjusted at the

room temperature controller or OpenTherm control-

ler.

Operating instructions for the room tempera-

ture controller or OpenTherm controller

Saving energy on DHW heating

At night or during regular absences, heat the DHW to a

lower temperature. To do so, adjust the time program

for DHW heating: See page 19.

For additional energy saving functions, please contact

your contractor.

Tips for greater comfort

More comfort in your home

■Set your individual preferred temperature: See

page 20.

■Adjust the time program for your heating circuits so

that your individual preferred temperature is auto-

matically reached if you are present: See page 18.

In room temperature-dependent operation, time pro-

grams for central heating can only be adjusted at the

room temperature controller or OpenTherm control-

ler. See the operating instructions for the controller.

■Only for weather-compensated operation:

Adjust the heating curves so that your home is

heated with your individual preferred temperature all

year round: See page 20.

Sufficient DHW heating for your needs

Adjust the time program for DHW heating so that there

is always sufficient hot water in accordance with your

habitual routines: See page 19.

Example: You need more DHW in the morning than in

the daytime.

Introductory information

Energy saving tips

6167584

All your system settings can be made via the program-

ming unit, remote control units or other room tempera-

ture control devices and the ViCare app.

Touchscreen operation

The programming unit is equipped with a display. To

input settings and check information, tap the on-screen

buttons.

Operation via remote control units or room temper-

ature control devices

Separate operating instructions

Operation via ViCare app

The ViCare app allows you to operate your system via

a mobile device, e.g. smartphone.

Available functions depend on the system equipment

e.g. with/without ViCare components for individual

room control.

Check the following system requirements for operation

via the app:

■Viessmann system that can be connected via Vito-

connect or an integrated communications module.

■WiFi connection from router for control with internet

access

■Smartphone or tablet with operating system:

–iOS

–Android

Further information on using the ViCare app: See

www.vicare.info.

Status display with Lightguide

Depending on the heat generator, a white spot (Light-

guide) is shown on the display.

Meaning of the display:

■Lightguide pulsates slowly:

Display is in standby mode.

■Lightguide flashes quickly:

There is a fault in the system.

Note

You can switch off the Lightguide. See page 24.

Displays

Standby

The display backlighting is switched off after approx.

2 minutes.

You can deactivate standby mode: See page 24.

Home screen

After switching on or activating the control unit the

home screen is shown.

In the delivered condition, heating circuit 1 is shown

as the home screen.

Call up the home screen:

■Standby is active:

Tap any button.

■From anywhere in the menu:

Tap until the home screen is shown.

Default displays

On the home screen, you can call up the various

default displays to see the status of the most important

functions.

Default screen displays:

In weather-compensated mode: Set room temper-

ature for heating circuit 1

In constant operation: Flow temperature for heat-

ing circuit 1

In weather-compensated mode: Set room temper-

ature for heating circuit 2

Operation

Operating principles

6167584

In constant operation: Flow temperature for heat-

ing circuit 2

DHW temperature

System pressure

DHW ECO function (with combi boilers)

Current fault message (if a fault is present)

To call up the default displays:

1. Tap repeatedly until the home screen is shown.

2. Tap to switch between the default displays.

Buttons and symbols

Fig. 1

AFunction area

BNavigation area

Buttons and symbols in navigation area B

Calls up the main menu.

Takes you back to the home screen.

Scrolls through the menu or adjusts values.

"OK" You confirm the operation.

Buttons and symbols in function area A

Note

■What buttons and symbols are available depends on

the operating mode: Weather-compensated opera-

tion, constant operation, room temperature-depend-

ent operation

■These symbols are not always displayed, but appear

subject to the system version and the operating sta-

tus.

Symbols

Heating circuit 1

Heating circuit 2

DHW temperature

System pressure

DHW ECO function

Service menu active

Fault display active

Burner status active

WiFi connection

Reduced temperature level active

Emissions test mode

Burner reset

Overview of main menu

In the main menu, you can check and adjust all of the

settings for the appliance's range of functions.

Available menus:

■" . " Temperature level

■" . " Information

■" . " Heating curve

■" . " Time program for central heating and DHW

heating

■" . " Display brightness

■" . " Display standby mode

■" . " Internet access and information

■" . " Low power radio access and information

■" . " Lightguide

■" . " Date

■" . " Time

Operation

Displays (cont.)

6167584

Calling up the main menu

Tap the following buttons:

1. to call up the main menu.

2. for the required menu

3. "OK" to confirm

Operating programs for central heating and DHW heating

Note

The operating programs for central heating and DHW

heating can be set separately or all together for the

entire system.

Operating program Function

Room heating

Heating circuit 1 and/or heating circuit 2

is active.

The rooms of the selected heating circuit are heated in accordance

with the specified room temperature or flow temperature and the

time program: See chapter "Central heating".

Note

In room temperature-dependent operation, a time program for cen-

tral heating can only be set at the room temperature controller or

OpenTherm controller: See the operating instructions for the room

temperature controller or OpenTherm controller.

Heating circuit 1 and/or heating circuit 2

is not active.

■No room heating

■Frost protection for the heat generator is active.

DHW heating

DHW is active. DHW is heated in accordance with the specified DHW temperature

and time program: See chapter "DHW heating".

DHW is not active. ■No DHW heating

■Frost protection for the DHW cylinder is active.

System

The entire system is switched on. ■The rooms are heated in accordance with the specified room

temperature or flow temperature and the time program: See

chapter "Central heating".

Note

In room temperature-dependent operation, a time program for

central heating can only be set at the room temperature control-

ler: See the operating instructions for the room temperature con-

troller.

■DHW is heated in accordance with the specified DHW tempera-

ture and time program: See chapter "DHW heating".

The entire system is switched off. ■No room heating

■No DHW heating

■Frost protection for the heat generator and the DHW cylinder is

active.

Operation

Overview of main menu (cont.)

6167584

Note

In room temperature-controlled operation, you set the

time programs via the room temperature controller or

OpenTherm controller.

Operating instructions for the room temperature

controller or OpenTherm controller

In the time programs you determine what your heating

system should do at what time. To do so, divide the

day into sections. These are called time phases. Dif-

ferent temperature levels are active within and outside

these time phases.

You can set up a time program for the following functions:

Function Temperature level

Within the time phase Outside the time phase

Room heating Weather-compensated operation:

Your rooms are heated with standard room

temperature or comfort room temperature.

Your rooms are heated with reduced room

temperature.

Constant operation:

Your rooms are heated with standard flow

temperature or comfort flow temperature.

Your rooms are heated with reduced flow

temperature.

Room temperature-dependent operation:

A time program for central heating can only be set at the room temperature controller.

Operating instructions for room temperature controller

DHW heating DHW heating is switched on.

The water in the DHW cylinder is heated to

the set DHW temperature.

DHW heating is switched off.

Procedure for setting a time program

The following explains how to input the settings for a

time program. The specifics of the individual time pro-

grams can be found in the relevant chapters.

In the time programs you determine what your heating

system should do at what time. To do so, divide the

day into sections. These are called time phases. Dif-

ferent temperature levels are active within and outside

these time phases.

Note

In operating modes "constant operation with room tem-

perature controller" and "OpenTherm controller", it is

not possible to adjust a time program for central heat-

ing and DHW heating.

Time programs

Time programs and time phases

6167584

Fig. 2

Adjusting a time program for central heating .

The time program for central heating is adjusted under

. .

The time phase for central heating is factory-set to

06:00 to 22:00.

Tap the following buttons:

1. for 4 s to enter the main menu.

2. / . should be selected.

3. "OK" to confirm

4. / or should be selected.

5. "OK" to confirm

6. / for the required period

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

7. "OK" to confirm

8. confirm with "OK" to add time phases

and/or .

/ and confirm with "OK" to edit the time of

the respective time phase.

9. and confirm with "OK" to modify the time

of the time phase.

and confirm with "OK" to delete the time

phase.

10. / to select the start time.

11. "OK" to confirm

12. / to select the end time.

13. "OK" to confirm

Time programs

Procedure for setting a time program (cont.)

6167584

14. and confirm with "OK" to set the "Stand-

ard" temperature level.

and confirm with "OK" to set the "Com-

fort" temperature level.

15. repeatedly to exit the menu.

Note

Outside the time program with temperature level or

, the reduced temperature level is active. The

reduced temperature level is shown as on the

home screen.

Adjusting a time program for DHW heating .

The time phase for DHW heating is factory-set to

05:00 to 22:00.

Adjust the time program to suit your needs.

Tap the following buttons:

1. for 4 s to enter the main menu.

2. / . should be selected.

3. "OK" to confirm

4. / should be selected.

5. "OK" to confirm

6. / for a time period

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

7. "OK" to confirm

8. Confirm with "OK" to add time phase .

Confirm with "OK" to edit the time of the

time phase.

9. and confirm with "OK" to modify the time

of the time phase.

and confirm with "OK" to delete the time

phase.

10. / to select the start time

11. "OK" to confirm

12. / to select the end time

13. "OK" to confirm

14. repeatedly to exit the menu.

Time programs

Adjusting a time program for central heating . (cont.)

6167584

Weather-compensated operation

■Standard room temperature: 20 °C

■Reduced room temperature: 3 °C

■Comfort room temperature: 20 °C

Constant operation and room temperature-depend-

ent operation

■Standard flow temperature: 60 °C

■Reduced flow temperature: 20 °C

■Only for constant operation

Comfort flow temperature: 70 °C

Constant operation and room temperature-depend-

ent operation with room temperature controller

Only change the set values for the flow temperature if

the heat supply for central heating is insufficient.

Room temperature-dependent operation with

OpenTherm controller

In this operating mode, it is not possible to adjust tem-

peratures via the control unit.

See the OpenTherm controller operating instructions.

Switching on the central heating

Tap the following buttons:

1. repeatedly to switch between the default dis-

plays until appears.

2. until the set temperature appears.

3. "OK" to confirm.

4. to exit the menu.

Adjusting the temperature level for central heating .

Adjust the temperature level for central heating to suit

your needs.

Note

With room temperature-dependent operation, you

adjust the set room temperature on your room temper-

ature controller.

Fig. 3

Tap the following buttons:

1. for 4 s to enter the main menu.

2. / . should be selected.

3. "OK" to confirm

4. / or should be selected.

5. "OK" to confirm

6. / Select the temperature level:

Reduced level

Standard level

Comfort level

7. "OK" to confirm

8. / to select the set value.

9. "OK" to confirm

10. repeatedly to exit the menu.

Note

The set value for the current temperature level and the

set flow temperature can be set directly via the home

screen for the respective heating circuit with .

Adjusting the heating curve .

The heating curve can only be adjusted in weather-

compensated operation.

By setting the heating curve, you influence the flow

temperature provided by the heat generator.

So that your rooms are heated optimally at any outside

temperature, you can adjust the heating curve slope

and level.

Central heating

Factory settings for the temperature levels

6167584

Factory setting:

■Slope: 1

■Level: 3

Fig. 4

Tap the following buttons:

1. for 4 s to enter the main menu.

2. / . should be selected.

3. "OK" to confirm

4. / or should be selected.

5. "OK" to confirm

6. / to set the value for the slope.

7. "OK" to confirm

8. / to set the value for the level.

9. "OK" to confirm

10. repeatedly to exit the menu.

Adjusting the room temperature for longer periods at home

If you are continuously at home for one or more days

but do not want to change the time program, select the

"holiday at home" function, e.g. for public holidays or

when the children are on school holidays.

The "holiday at home" function has the following

effects:

■The room temperature during the periods between

the set time phases is raised to the set value of the

first time phase of the day: From reduced room tem-

perature to standard room temperature or comfort

room temperature

■If no time phase is active before 00:00, your rooms

are heated to the reduced room temperature until the

next time phase becomes active.

■DHW heating is active.

■The "holiday at home" function starts and ends

according to the set times for the start date and end

date.

■As long as the "holiday at home" function is switched

on, the default display shows "E 3".

Switching the holiday at home function on/off

You can switch the "holiday at home" function on and

off via the ViCare app.

While the function is switched on, "E 3" is shown on

the display.

Saving energy during long absences

To save energy during long periods of absence, select

the "holiday program".

The holiday program has the following effects:

■Room heating:

–For heating circuits in the heating operating pro-

gram:

The rooms are heated to the set reduced room

temperature.

–For heating circuits in standby mode:

No room heating: Frost protection for the heat gen-

erator and the DHW cylinder is active.

■DHW heating:

No DHW heating: Frost protection for the DHW cylin-

der is active.

Central heating

Adjusting the heating curve . (cont.)

6167584

■The holiday program starts at 00:00 on the first day

of your holiday and ends at 23:59 on the final day.

■As long as the "holiday program" function is switched

on, the default display shows "E 3".

Switching the holiday program on/off

The "holiday program" function is switched on and off

via the ViCare app.

While the function is switched on, the display shows

"E 3".

Turning off central heating

You do not want to heat your rooms but you want to

have DHW available (summer mode).

Note

If heating circuit 2 was configured on the heat gen-

erator and you want to switch it off, move through the

default display until is illuminated.

Tap the following buttons:

1. repeatedly to switch between the default dis-

plays until appears.

2. until appears.

3. "OK" to confirm.

4. to exit the menu.

Note

■To prevent the circulation pump from seizing, it

briefly starts every 24 hours.

■Boiler frost protection is enabled.

Central heating

Saving energy during long absences (cont.)

6167584

You want to have DHW available.

Tap the following buttons:

1. repeatedly to switch between the default dis-

plays until appears.

2. for 4 s until appears.

3. "OK" to confirm.

4. to exit the menu.

Adjusting the temperature for DHW heating .

Factory settings: 50 °C

Adjust the DHW temperature to suit your needs.

Note

For reasons of good hygiene, you should not set the

DHW temperature lower than 50 °C.

Tap the following buttons:

1. for 4 s to enter the main menu.

2. . should be selected

3. "OK" to confirm

4. / should be selected.

5. "OK" to confirm

6. / Set a value.

7. "OK" to confirm

8. repeatedly to exit the menu.

Setting the Eco function for DHW heating

Note

This function is only possible in conjunction with an

instantaneous water heater (combi boiler).

The ECO function does not provide you with instant

hot water; the water is not heated until it is drawn off.

You can set the Eco function via default display .

Tap the following buttons:

1. repeatedly to switch between the default

displays until appears.

2. /

3. "OK" to confirm

If is illuminated on the far left, you have

successfully switched on the Eco func-

tion.

Switching off DHW heating

You do not want to have DHW available.

Tap the following buttons:

1. repeatedly to switch between the default dis-

plays until appears.

2. for 4 s until appears.

3. "OK" to confirm.

4. to exit the menu.

DHW heating

Switching on DHW heating

6167584

Set the right brightness for your display.

Tap the following buttons:

1. for 4 s to enter the main menu.

2. / . should be selected.

3. "OK" to confirm

4. / Set a value.

5. "OK" to confirm

6. repeatedly to exit the menu.

Setting standby for the display .

Activate or deactivate standby.

Tap the following buttons:

1. for 4 s to enter the main menu.

2. / . should be selected.

3. "OK" to confirm

4. / or should be selected.

The display is always on.

The display enters standby mode

after 2 minutes.

5. "OK" to confirm

6. repeatedly to exit the menu.

Switching the "Lightguide" on and off .

Depending on the heat generator, a white spot (Light-

guide) is shown on the display during operation.

In the delivered condition, the Lightguide is switched

on. You can switch off the Lightguide.

Tap the following buttons:

1. for 4 s to enter the main menu.

2. / . should be selected.

3. "OK" to confirm

4. / or should be selected.

Confirm your selection with "OK".

5. repeatedly to exit the menu.

Meaning of the display:

■Lightguide pulsates slowly:

Display is in standby mode.

■Lightguide flashes quickly:

There is a fault in the system.

Note

Faults are shown by flashing lights even if the Light-

guide is switched off.

Setting the date .

The date is preset by the heating contractor. Change

the date if necessary.

Tap the following buttons:

1. for 4 s to enter the main menu.

2. / . . should be selected.

3. "OK" to confirm

4. / to select the day.

5. "OK" to confirm

6. / to select the month.

7. "OK" to confirm

8. / to select the year.

9. "OK" to confirm

Further settings

Adjusting the display brightness .

6167584

10. repeatedly to exit the menu.

Setting the time .

The time is preset by the heating contractor. Change

the time if necessary.

Tap the following buttons:

1. for 4 s to enter the main menu.

2. / . . should be selected.

3. "OK" to confirm

4. / to select the hour.

5. "OK" to confirm

6. / to select the minutes.

7. "OK" to confirm

8. repeatedly to exit the menu.

Switching internet access on or off

You can control your system remotely via the internet

using an app. To do this, establish an internet connec-

tion via WiFi (2.4 gigahertz): See the following chapter.

The required credentials for internet access to the con-

trol unit via app can be found on the adjacent label:

Establishing a WiFi connection

You will need the ViCare app on your mobile device to

establish an internet connection with the heat genera-

tor.

Tap the following buttons:

1. "OK" for 4 s. The display will show a rotating bar

until the WiFi symbol is illuminated on the far left.

2. Start the ViCare app and follow the instructions in

the app.

flashes. The connection to the local

network is being estab-

lished.

is dimly illuminated. The connection to the local

network has been estab-

lished.

is brightly illuminated. The connection to the server

has been established.

Fault while establishing the connection

"E10" Connection to the home network cannot be

established.

Note

If "E10" appears on the display, check the con-

nection to the router and whether the network

password is correct.

"E12" Connection to the server cannot be estab-

lished.

Note

If "E12" appears on the display, re-establish

the connection at a later time.

Switching the WiFi connection on or off

Switch the WiFi connection on and off as required.

Further settings

Setting the date . (cont.)

6167584

Tap the following buttons:

1. repeatedly to access the main menu.

2. + "OK" Press and hold for 4 s to switch the

WiFi connection on or off.

In the display you will see:

■ to indicate the WiFi connection is

switched on

■ to indicate the WiFi connection is

switched off

3. repeatedly to exit the menu.

Switching the wireless connection for the remote control on or off

With weather-compensated operation, you can con-

nect your remote control to the control unit for wireless

data transfer via low power radio.

Fig. 5

Tap the following buttons:

1. for 4 s to enter the main menu.

2. / . should be selected.

Note

Menu point P.8 is not shown if a low

power radio component is already con-

nected to the appliance.

3. "OK" to confirm

4. / Switch low power radio on with or off

with .

5. "OK" to confirm

6. repeatedly to exit the menu.

Further settings

Switching internet access on or off (cont.)

6167584

Depending on the system equipment level and the set-

tings made, you can check current system data, e.g.

temperatures.

Fig. 6

Tap the following buttons:

1. for 4 s to enter the main menu.

2. / . should be selected.

3. "OK" to confirm

4. / . ... . should be selected.

. Outside temperature

. Heat generator flow temperature

. Primary circuit pump speed in %

. Flue gas temperature

. Burner hours run

. Burner output

. 3-way valve position

Heating

Middle position (if installed)

DHW

. Serial number of heat generator

As only 3 digits can be displayed at

one time, tap on / to see

more digits.

. Heating circuit 1 flow temperature

. Heating circuit 2 flow temperature

. DHW temperature

5. "OK" to confirm

6. repeatedly to exit the menu.

Checking licences for the integrated communication module

Switch on the WiFi to call up online legal information,

such as open source licences:

On the home screen, press OK for approx. 4 s.

Calling up the license information for third party components

Requirement: Access point must be switched on.

Tap the following buttons:

1. Call up the WiFi settings on your mobile device.

2. Connect your mobile device to the WiFi

"Viessmann-<xxxx>".

A password prompt will be displayed.

3. Enter the WPA2 network key as the password for

the "Viessmann-<xxxx>" WiFi.

Note

The WPA2 network key can be found on the label:

See chapter "Switching internet access on or off".

4. With your connected mobile device, open http://

192.168.0.1 in your internet browser.

Checks

Checking operating data .

6167584

5. Follow the link "Third party Components Licen-

ces".

Third Party Software

1 Overview

This product contains third party software, including

open source software. You are entitled to use this third

party software in compliance with the respective

license conditions as provided in this document.

A list of used third party software components and of

license texts can be accessed by connecting your

boiler, like it is mentioned in the manual.

2 Acknowledgements

Linux® is the registered trademark of Linus Torvalds in

the U.S. and other countries. This product includes

software developed by the OpenSSL Project for use in

the OpenSSL Toolkit (http://www.openssl.org/). This

product includes cryptographic software written by Eric

Young (eay@cryptsoft.com) and software written by

Tim Hudson (tjh@cryptsoft.com).

3 Disclaimer

The open source software contained in this product is

distributed WITHOUT ANY WARRANTY; without even

the implied warranty of MERCHANTABILITY or FIT-

NESS FOR A PARTICULAR PURPOSE. The single

licenses may contain more details on a limitation of

warranty or liability.

4 How to Obtain Source Code

The software included in this product may contain

copyrighted software that is licensed under a license

requiring us to provide the source code of that soft-

ware, such as the GPL or LGPL. To obtain the com-

plete corresponding source code for such copyrighted

software please contact us via the contact information

provided in section 5 below indicating the built number

you will find in the licensing information section, which

can be accessed as outlined in this document. This

offer is not limited in time and valid to anyone in receipt

of this information.

5 Contact Information

Viessmann Climate Solutions SE

35108 Allendorf

Germany

Fax +49 64 52 70-27 80

Phone +49 64 52 70-0

open-source-software-support@viessmann.com

www.viessmann.de

Checking WiFi information .

You can check the current status of your WiFi connec-

tion, such as the signal strength.

Tap the following buttons:

1. for 4 s to enter the main menu.

2. / . should be selected.

Checks

Checking licences for the integrated… (cont.)

6167584

3. "OK" to confirm

One of the following statuses is dis-

played:

WiFi off

Signal strength very weak

Signal strength weak

Signal strength good

Signal strength very good

Connection is established.

No data transfer

Communication error

Offline

Access point mode; the heat gener-

ator can be connected to ViCare,

for example.

4. "OK" to confirm

5. repeatedly to exit the menu.

Checking fault messages

If your heating system has a fault, and the fault

code will be displayed.

Danger

If faults are not rectified, they can have life

threatening consequences.

Do not acknowledge fault messages several

times in quick succession. Please notify your

contractor if a fault occurs. Your contractor will

be able to analyse the cause and rectify the

fault.

If a fault is active and is shown on the display, you can

confirm with OK and return to the home screen.

To call up this fault later, follow the steps below.

Note

■If you have connected a message facility to alert you

to fault messages (e.g. a buzzer), this is deactivated

when the fault message is acknowledged.

■If troubleshooting cannot be carried out until a later

date, the fault message will be displayed again the

following day at 07:00. The message facility is

switched on again.

Tap the following buttons:

1. for 4 s to enter the main menu.

2. / should be selected.

3. "OK" to confirm

4. / to select fault message to .

5. "OK" to confirm

6. / to call up further details about the fault

code.

Note

Up to 5 fault messages can be displayed.

7. repeatedly to exit the menu.

If flashes and appears on the display, the burner

is locked out. To reset the burner, see next chapter

"Burner fault".

Burner fault

The display shows and flashes.

A fault has caused the burner to lock out. You can

reset it.

Note

The burner fault display can be closed for the time

being by pressing for 4 s. You can open the fault

later by pressing simultaneously.

Tap the following buttons:

1. / to see the fault number.

2. Make a note of the fault number.

This enables the contractor to be better prepared

and may save you unnecessary travelling costs.

Checks

Checking WiFi information . (cont.)

6167584

3. Press and for approx. 4 s.

A rotating bar will appear on the display. This indi-

cates that the resetting process has been started.

If the fault no longer exists, the home screen will

appear.

Notify your heating contractor if the fault

recurs.

Checks

Checking fault messages (cont.)

6167584

Emissions test mode for testing flue gas must only be

activated by your flue gas inspector during the annual

inspection.

If possible, have the emissions test carried out during

the heating season.

Tap the following buttons:

and for 4 s.

A rotating bar is shown on the display. The process

has been started. A check runs in the background to

determine whether there is sufficient heat transfer.

As soon as emissions test mode is active, the heat

generator flow temperature appears on the display.

Note

If "- - -" flashes on the display 3 times and then the

home screen is shown, emissions test mode is not

possible due to a low flow rate or low heat draw-off.

Note

Emissions test mode ends automatically after

30 minutes.

Press to manually end emissions test mode.

Emissions test mode

Switching emissions test mode on and off

6167584

With frost protection monitoring

If you do not wish to use your heat generator for sev-

eral days you can switch it off.

Set the operating mode to OFF.

Frost protection monitoring is active for the heat gener-

ator and the DHW cylinder.

Note

For frost protection for the entire heating system, see

the operating instructions for the room temperature

controller.

Without frost protection monitoring

Shut down your heating system completely if it will not

be needed for long periods of time (several months).

We recommend you contact your local heating con-

tractor if you are planning to take your heating system

out of use for long periods. Your heating contractor can

then take suitable steps such as frost protection for the

system or heating surface preservation as required.

1. Close the gas shut-off valve. Secure to prevent

unauthorised opening.

2. Turn off the ON/OFF switch.

The power to the system is now at zero volt.

Note that the system is no longer protected

against frost.

Switching on the system

Ask your contractor about the following:

■Required system pressure

■Position of ventilation apertures in the installation

room, if applicable

1. Open the gas shut-off valve.

2. Check whether the power supply to your system is

switched on, e.g. at a separate MCB/fuse or mains

isolator.

Note

The power supply to the system was switched on

by your heating contractor during commissioning. If

possible, do not interrupt the power supply, even

when the system is in standby mode.

3. Turn on the ON/OFF switch.

■After a short while, the home screen is shown on

the display.

■The Lightguide is illuminated constantly.

Your system and, if installed, remote control units

are ready for operation.

4. Check the system pressure:

■ until the pressure gauge symbol lights up.

■If the pressure shown is below 1.0 bar:

Please top up with water or notify your heating

contractor.

Switching on and off

Switching the system off

6167584

Cause Remedy

The heating system is off. ■Turn on the ON/OFF switch.

■Switch ON the mains isolator if installed (outside the

boiler room).

■Reset the MCB in the power distribution board (main

domestic MCB).

Control unit or room temperature controller is not set

correctly.

■Operation with room temperature controller:

Set a higher flow temperature.

■Weather-compensated operation:

Set a higher room temperature.

Only when operating with DHW heating:

Priority for DHW heating is active (" " is displayed).

Wait until the DHW cylinder has been heated up (" "

disappears).

In the case of operation with an instantaneous water

heater, stop DHW draw-off.

No fuel. With LPG:

Check the fuel reserves and re-order if required.

With natural gas:

Open the gas shut-off valve. If necessary, check with

your gas supply utility.

" " is shown on the display. Notify your heating contractor of the fault code shown.

" " and the fault code flash on the display. The burner

does not start.

Reset the burner.

Notify your heating contractor if the fault recurs.

Danger

If faults are not rectified, they can have life

threatening consequences.

Do not reset the burner several times in quick

succession. Notify your heating contractor if a

fault recurs. Your heating contractor will be able

to analyse the cause and rectify the fault.

Air in the heating system Bleed radiators.

The burner is switched off. Blockage in the ventilation

air supply or flue system

Notify your local heating contractor.

The "holiday program" function is switched on via the

ViCare app.

"E 3" is shown on the display.

Use the ViCare app to check whether the "holiday pro-

gram" function is switched on, change it if necessary, or

switch it off.

Rooms are too hot

Cause Remedy

Control unit or room temperature controller is not set

correctly.

Check and correct the room temperature or flow tem-

perature.

Operating instructions for room temperature con-

troller

" " is shown on the display. Notify your heating contractor of the fault code.

The "holiday at home" function is switched on via the

ViCare app.

"E 3" is shown on the display.

Use the ViCare app to check whether the "holiday at

home" function is switched on, change it if necessary,

or switch it off.

What to do if...

Rooms are too cold

6167584

Cause Remedy

The heating system is switched off. ■Turn on the ON/OFF switch.

■Switch ON the mains isolator if installed (outside the

boiler room).

■Reset the MCB in the power distribution board (main

domestic MCB).

Control unit is not set correctly. Check and correct the DHW temperature.

No fuel. With LPG:

Check the fuel reserves and re-order if required.

With natural gas:

Open the gas shut-off valve. If necessary, check with

your gas supply utility.

" " is shown on the display. Notify your heating contractor of the fault code shown.

" " and the fault code flash on the display. The burner

does not start.

Reset the burner fault: See page 29.

Notify your heating contractor if the fault recurs.

Danger

If faults are not rectified, they can have life

threatening consequences.

Do not reset the burner fault several times in

quick succession. Notify your heating contractor

if a fault recurs. Your heating contractor will be

able to analyse the cause and rectify the fault.

"Filter strainer" dirty

(Gas condensing combi boilers only).

Have the filter strainer checked/replaced by your con-

tractor.

The DHW is too hot

Cause Remedy

The control unit is not set correctly. Check and correct the DHW temperature.

" " and the fault code are flashing

Cause Remedy

The burner does not start. Reset the burner fault: See page 29.

Notify your heating contractor if the fault recurs.

Danger

If faults are not rectified, they can have life

threatening consequences.

Do not reset the burner fault several times in

quick succession. Notify your heating contractor

if a fault recurs. Your heating contractor will be

able to analyse the cause and rectify the fault.

" " is shown

Cause Remedy

Heating system fault Notify your heating contractor of the fault code.

What to do if...

There is no hot water

6167584

The appliances can be cleaned with a commercially

available domestic cleaning agent (non-scouring).

Clean the surface of the programming unit with a

microfibre cloth.

Inspection and maintenance

The inspection and maintenance of a heating system

is prescribed by the Buildings Energy Act [Germany]

and the DIN 4755, DVGW-TRGI 2018 and

DIN EN 806-5 standards.

Regular maintenance ensures trouble-free, energy effi-

cient, environmentally responsible and safe heating

operation. Your heating system must be serviced by an

authorised contractor at least every 2 years. For this, it

is best to arrange an inspection and maintenance con-

tract with your local contractor.

Appliance

Increased contamination raises the flue gas tempera-

ture and thereby increases energy losses. We recom-

mend the appliance is cleaned annually.

DHW cylinder

Standard EN 806-5 specifies that maintenance and

cleaning should be carried out no later than 2 years

after commissioning and as required thereafter.

Only a qualified contractor should clean the inside of

the DHW cylinder and the DHW connections.

If any water treatment equipment (e.g. a sluice or

injection system) is installed in the cold water supply of

the DHW cylinder, ensure this is refilled in good time.

For this, observe the manufacturer's instructions.

Safety valve (DHW cylinder)

The function of the safety valve must be checked

every six months by the user or a contractor through

venting (see valve manufacturer's instructions). The

valve seat may become contaminated.

Water may drip from the safety valve during a heat-up

process. The outlet is open to the atmosphere.

!Please note

Overpressure can cause damage.

Do not close the safety valve.

Potable water filter (if installed)

To maintain high hygienic standards, proceed as fol-

lows:

■Replace filter element on non-back flushing filters

every six months (visual inspection every

two months).

■On back flushing filters, back flush every

two months.

Damaged cables / lines

If there is damage to the connecting cables or lines of

the appliance or externally installed accessories, these

must be replaced with Viessmann cables or lines. For

this, contact your qualified contractor.

Maintenance

Cleaning

6167584

Operating program

The operating program enables you to define the fol-

lowing, for example:

■How you heat your rooms

■Whether you heat DHW

Heating curve

Heating curves illustrate the relationship between the

outside temperature, the set room temperature and the

flow temperature. The lower the outside temperature,

the higher the flow temperature.

In order to guarantee sufficient heat with minimum

energy consumption at any outside temperature, the

conditions of your building and system must be taken

into consideration. The heating curve is adjusted by

your contractor for this purpose.

3.2

3.4

Flow temperature in °C

Outside temperature in °C

Heating curve slope

3.0

2.8

2.2

2.4

2.0

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

1.8

2.6

1020 -30-20-100

Fig. 7

Setting the slope and level, taking the heating curve as an example

Factory settings:

■Slope = 1

■Level = 3

The heating curves shown apply with the following set-

tings:

■Heating curve level = 0

■Standard room temperature (set room temperature)

= 20 °C

0.2

Outside temperature in °C

Slope

2.4

2.62.8

3.03.2

3.4

0 -10 -2010

2.0

2.2

Set room

temperature in °C

35 30 25 20 15 10 5

0.4

0.6

0.8

1.0

1.2

1.4

-30

1.8

1.6

-14

Flow temperature in °C

Fig. 8

Appendix

Terminology

6167584

For an outside temperature of −14 °C:

AUnderfloor heating system: Slope 0.2 to 0.8

BLow temperature heating system: Slope 0.8 to 1.6

CSystem with a flow temperature in excess of 75 °C, slope 1.6 to 2.0

Flow temperature

in °C

110

Outside temperature

in °C

3.5

1.4

0.2

-20

Set room temperature in °C

35 30 25 20 15 10 5

Fig. 9

AIf you change the slope:

The steepness of the heating curves changes.

BIf you change the level:

The heating curves are shifted in parallel in a verti-

cal direction.

CIf you change the standard room temperature (set

room temperature):

The heating curves are shifted along the "Set room

temperature" axis.

Note

Setting the slope or level too high or too low will not

cause any damage to your heating system.

Both settings affect the level of the flow temperature,

which may then be too low or unnecessarily high.

Heating circuit

A heating circuit is a sealed unvented circuit connect-

ing the heat generator and the radiators, in which the

heating water circulates.

A system may comprise several heating circuits.

For example, one heating circuit for the rooms occu-

pied by you and one heating circuit for the rooms of a

separate apartment.

Heating circuit pump

Circulation pump for circulating the heating water in

the heating circuit

Appendix

Terminology (cont.)

6167584

Room temperature

■Standard room temperature or comfort room temper-

ature:

Set the standard room temperature or comfort room

temperature for periods when you are at home dur-

ing the day.

■Reduced room temperature:

For periods when you will be absent or during the

night, set the reduced room temperature; see "Heat-

ing mode".

Safety valve

Safety equipment that must be installed in the cold

water pipe by your contractor. The safety valve opens

automatically to prevent excess pressure in the DHW

cylinder.

The heating circuits are also equipped with safety

valves.

Temperature level

You can specify set values for 3 different temperature

levels:

■"Standard"

■"Reduced"

■"Comfort"

Set temperature

Specific temperature that should be reached, e.g. set

DHW temperature for example.

Drinking water filter

A device that removes solids from the drinking water.

The drinking water filter is built into the cold water

pipework to the DHW cylinder.

Flow temperature

The flow temperature is the temperature at which the

heating water enters a system component such as a

heating circuit.

Time program

In the time programs you determine what your heating

system should do at what time.

Information on disposal

Disposal of packaging

Your contractor will dispose of the packaging from your

Viessmann product.

Appendix

Terminology (cont.)

6167584

Final decommissioning and disposal of the heating system

Viessmann products can be recycled. Components

and fluids from your heating system do not belong in

ordinary domestic waste.

Please speak to your contractor about the correct dis-

posal of your old system.

Appendix

Information on disposal (cont.)

6167584

Ambient temperatures................................................ 11

Brightness adjustment................................................24

Burner reset............................................................... 29

Buttons....................................................................... 15

Central heating

– Factory settings.......................................................12

Central heating, switching on..................................... 20

Checks

– Fault messages.......................................................29

– Information.............................................................. 27

– WiFi information...................................................... 28

Cleaning..................................................................... 35

Cleaning information.................................................. 35

Cold rooms.................................................................33

Comfort (tips)............................................................. 13

Commissioning.....................................................11, 32

Date/time, factory setting........................................... 12

Default displays..........................................................14

Default setting............................................................ 12

DHW heating

– Comfort................................................................... 13

– Energy saving......................................................... 13

– Factory setting.........................................................12

DHW heating, switching off........................................ 23

DHW heating, switching on........................................ 23

DHW temperature adjustment....................................23

Display illumination.................................................... 24

Drinking water filter.................................................... 38

Emissions test mode.................................................. 31

Energy saving (tips)................................................... 13

Energy saving function...............................................21

Factory setting............................................................12

Fault............................................................... 29, 33, 34

Filter (drinking water)................................................. 38

Flow temperature....................................................... 38

Frost protection.................................................... 12, 22

Frost protection monitoring........................................ 12

Gas shut-off valve...................................................... 32

Glossary..................................................................... 36

Heat generator, switching on......................................32

Heating circuit............................................................ 37

Heating circuit pump.................................................. 37

Heating curve

– Explanation............................................................. 36

Heating curve adjustment.......................................... 20

Holiday....................................................................... 21

Holiday at home......................................................... 21

Holiday program...................................................21, 22

Home screen..............................................................14

Hot rooms...................................................................33

Hot water....................................................................34

Information................................................................. 10

Inspection...................................................................35

Installation room......................................................... 11

Intended use.............................................................. 10

Internet access, switching on..................................... 25

Legal information........................................................27

Level of heating curve................................................ 36

Liability......................................................................... 8

Licences............................................................... 11, 27

Lightguide.............................................................14, 24

Low power radio on/off...............................................26

Main menu................................................................. 15

Maintenance...............................................................35

Maintenance contract.................................................35

No hot water...............................................................34

Notice of completion...................................................11

ON/OFF switch...........................................................32

Open source licences.................................................27

Operating data, checking........................................... 27

Operating program

– Terminology.............................................................36

Operating programs................................................... 16

Operation................................................................... 14

Power failure.............................................................. 12

Pressure gauge..........................................................32

Pressure indicator...................................................... 32

Product information.................................................... 10

Pump

– Heating circuit......................................................... 37

Reduced heating mode.............................................. 12

Reduced heating operation........................................ 12

Rooms are too cold.................................................... 33

Rooms too hot............................................................33

Room temperature

– Adjusting for longer periods at home...................... 21

Safety valve................................................................38

Screensaver............................................................... 14

Set temperature......................................................... 38

Keyword index

6167584

Setting a time program...............................................17

Setting the date.......................................................... 24

Shutdown

– With frost protection................................................ 32

– Without frost protection........................................... 32

Slope of heating curve............................................... 36

Standard heating operation........................................12

Standby...................................................................... 14

Standby mode............................................................ 36

Standby mode for display...........................................24

Status display.............................................................14

Summer mode............................................................36

Summertime changeover........................................... 12

Switching off

– DHW heating...........................................................23

– Heat generator........................................................ 32

Switching on...............................................................32

– Central heating........................................................20

– DHW heating...........................................................23

Symbols....................................................................... 9

System

– Switching on............................................................32

Temperature

– Set temperature...................................................... 38

Temperature level.......................................................38

Temperature level adjustment.................................... 20

Terminology................................................................36

Test mode...................................................................31

Third Party Software.................................................. 28

Time/date, factory setting........................................... 12

Time program....................................................... 13, 38

– Comfort................................................................... 13

Time program adjustment

– Central heating........................................................18

– DHW........................................................................19

Time setting................................................................25

Turning off

– Central heating........................................................22

Turning off central heating..........................................22

ViCare app................................................................. 14

Water too cold............................................................ 34

Water too hot..............................................................34

What to do if...?.......................................................... 33

WiFi............................................................................ 25

WiFi connection..........................................................25

WiFi connection, establishing.....................................25

Winter mode...............................................................36

Wintertime changeover.............................................. 12

Wireless connection, switching on............................. 26

Keyword index

Keyword index (cont.)

6167584

Your contact

Contact your local contractor if you have any questions about your system or wish to arrange maintenance or

repair work. You can find local contractors on the internet at www.viessmann.de.

Viessmann Limited

Hortonwood 30, Telford

Shropshire, TF1 7YP, GB

Telephone: +44 1952 675000

Fax: +44 1952 675040

E-mail: info-uk@viessmann.com

Viessmann Climate Solutions SE

35108 Allendorf / Germany

Telephone: +49 6452 70-0

Fax: +49 6452 70-2780

www.viessmann.com

6167584 Subject to technical modifications.

Viessmann VITODENS 100-W - 2023 Handleiding

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