VIESSMANN VITODENS 100-W Wall Mounted Gas Fired Instruction Manual

: June 15, 2024
: VIESSMANN

Table of Contents

VITODENS 100-W Wall Mounted Gas Fired
Safety
General Information
Operation
Time Programs
DHW Heating
Further Adjustments
Calling Up Information
Emissions Test Mode
Switching On and Off
What to do if…
Maintenance
Appendix
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

VITODENS 100-W
Operating Instructions
for the system user

VITODENS 100-W Wall Mounted Gas Fired

Vitodens 100-W
B1HE Series and B1KE Combi Series
Wall mounted gas-fired condensing boiler with 3.5 inch black/white display
On demand domestic Hot Water with Combi Boilers
For operation with natural gas or liquid propane gas
Heating Input: 8.5 to 199 MBH
2.5 to 58.3 kW WARNING
If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
Do not store or use gasoline or other flammable liquids in the vicinity of this or any other boiler.
WHAT TO DO IF YOU SMELL GAS

Do not try to light any boilers.
Do not touch any electrical switches, do not use any phone in your building.
Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
If you cannot reach your gas supplier, call the fire department.

Installation and service must be performed by a qualified installer, service agency or the gas supplier.
WARNING
Improper installation, adjustment, and/ or operation could cause carbon monoxide poisoning resulting in injury or loss of life.
This product must be installed and serviced by a professional service technician who is experienced and qualified in hot water boiler installation and gas combustion.
Product may not be exactly as shown
IMPORTANT
Read and save these instructions for future reference.

Safety

Safety, Installation and Warranty Requirements
Please ensure that these instructions are read and understood before commencing installation. Failure to comply with the instructions listed below and details printed in this manual can cause product/property damage, severe personal injury, and/or loss of life. Ensure all requirements below are understood and fulfilled (including detailed information found in manual subsections).

Product documentation
Read all applicable documentation before commencing installation. Store documentation near boiler in a readily accessible location for reference in the future by service personnel.
**** For a listing of applicable literature, please see section entitled “Important Regulatory and Safety Requirements”.
Warranty
Information contained in this and related product documentation must be read and followed. Failure to do so renders the warranty null and void.
Licensed professional heating contractor
The installation, adjustment, service and maintenance of this equipment must be performed by a licensed professional heating contractor.
**** Please see section entitled
“Important Regulatory and Installation Requirements”.
Contaminated air
Air contaminated by chemicals can cause by-products in the combustion process, which are poisonous to inhabitants and destructive to Viessmann equipment.
**** For a listing of chemicals which cannot be stored in or near the boiler room, please see subsection entitled “Mechanical room” in the “Installation Instructions”.
Advice to owner
Once the installation work is complete, the heating contractor must familiarize the system operator/ ultimate owner with all equipment, as well as safety precautions/requirements, shutdown procedure, and the need for professional service annually before the heating season begins.

WARNING
Installers must follow local regulations with respect to installation of carbon monoxide detectors. Follow the Viessmann maintenance schedule of the boiler contained in this manual.
Operating and Service Documentation
It is recommended that all product documentation such as parts lists, operating and service instructions be handed over to the system user for storage. Documentation is to be stored near boiler in a readily accessible location for reference by service personnel.

Carbon monoxide
Improper installation, adjustment, service and/or maintenance can cause flue products to flow into living space. Flue products contain poisonous carbon monoxide gas.
**** For information pertaining to the proper installation, adjustment, service and maintenance of this equipment to avoid formation of carbon monoxide, please see subsection entitled “Mechanical room” and “Venting requirements” in the “Installation Instructions”.
Fresh air
This equipment requires fresh air for safe operation and must be installed ensuring provisions for adequate combustion and ventilation air exist.
**** For information pertaining to the fresh air requirements of this product, please see subsection entitled “Mechanical room” in the “Installation Instructions”.
Equipment venting
Never operate boiler without an installed venting system. An improper venting system can cause carbon monoxide poisoning.
**** For information pertaining to venting and chimney requirements, please see section entitled “Venting Connection”. All products of combustion must be safely vented to the outdoors.

WARNING
This boiler requires fresh air for safe operation and must be installed with provisions for adequate combustion and ventilation air (in accordance with local codes and regulations of authorities having jurisdiction).
Do not operate this boiler in areas with contaminated combustion air. High levels of contaminants such as dust, lint or chemicals can be found at construction sites, home renovations, in garages, workshops, in dry cleaning/laundry facilities, near swimming pools and in manufacturing facilities.
Contaminated combustion air will damage the boiler and may lead to substantial property damage, severe personal injury and/or loss of life. Ensure boiler/burner is inspected and serviced by a qualified heating contractor at least once a year in accordance with the Service Instructions of the boiler.
About these Instructions
** Take note of all symbols and notations intended to draw attention to potential hazards or important product information. These include “WARNING”, “CAUTION”, and “IMPORTANT”. See below.
WARNING
Indicates an imminently hazardous situation which, if not avoided, could result in loss of life, serious injury or substantial product/property damage.
CAUTION
Indicates an imminently hazardous situation which, if not avoided, may result in minor injury or product/ property damage.
IMPORTANT

** Warnings draw your attention to the presence of potential hazards or important product information.
Cautions draw your attention to the presence of potential hazards or important product information.
Helpful hints for installation, operation or maintenance which pertain to the product.
This symbol indicates that additional, pertinent information is to be found.
This symbol indicates that other instructions must be referenced.
For your Safety
Operation
Before operating the boiler, make sure you fully understand its method of operation. Your heating contractor should always perform the initial start-up and explain the system. Any warranty is null and void if these instructions are not followed.
Working on the equipment
All personnel working on the equipment or the heating system must have the proper qualifications and hold all necessary licenses.
Ensure main power to equipment, heating system, and all external controls has been deactivated. Close main gas supply valve. Take precautions in all instances to avoid accidental activation of power during service work.
Maintenance and cleaning
Regular inspection and service by a qualified heating contractor is important to the performance of the Viessmann Vitodens 100-W. Neglected maintenance impacts on warranty; regular inspection ensures clean, environmentally friendly and efficient operation. We recommend a maintenance contract with a qualified heating contractor.
Flue gas smell
– Deactivate heating equipment.
– Open windows and doors.
– Inform your heating contractor.
Dangerous conditions
– Deactivate main power immediately.
– Close gas supply valve.
Technical information
Literature applicable to all aspects of the Vitodens 100-W
– Technical Data Manual
– Installation and Service Instructions
– Operating Instructions and User’s Information Manual
Additional applicable literature:
– Accessory manuals
Carbon monoxide
The U.S. Consumer Product Safety Commission strongly recommends the installation of carbon monoxide detectors in buildings in which gas-burning equipment is installed. Carbon monoxide (CO) is a colorless, odorless gas, which may be produced during incomplete combustion of fuel and/ or when the flame does not receive an adequate supply of combustion air.
Carbon monoxide can cause severe personal injury or loss of life.
Therefore, carbon monoxide detectors that are in compliance with a nationally recognized standard (e.g. ANSI/UL 2034, CSA 6.19 latest edition) should be installed and maintained in buildings that contain gas-burning equipment.
Note: Viessmann does not test any detectors and makes no representation regarding any brand or type of detector.
WARNING
This product burns gas to produce heat. The appliance must be properly installed, operated and maintained to avoid exposure to appreciable levels of carbon monoxide and the installer is required to confirm that at least one carbon monoxide alarm is installed in the living space before the appliance is put into operation. It is important for the carbon monoxide alarms to be installed, maintained, and replaced following the alarm manufacturer’s instructions and applicable local codes.
For safe operation
We recommend that you frequently:
– Check for debris which could obstruct the flow of flue gases. The vent or chimney must not be blocked. A blocked or partially blocked vent or chimney can cause flue gases to leak into the structure. Flue gases leaking into the house can cause injury or loss of life. Blocked or partially blocked chimneys must have the blockage removed by a qualified heating contractor.
– Check pressure gage for correct system (water) pressure. Check for water on the floor from the discharge pipe of the pressure relief valve or any other pipe, pipe joint, valve or air vent.
– Check for moisture, water, or appearance of rust on the flue gas pipes, their joints as well as vent dampers, or side wall vent terminals (if so equipped).
– Ensure that nothing is obstructing the flow of combustion and ventilation air and no chemicals, garbage, gasoline, combustible materials, flammable vapors and liquids are stored (not even temporarily) in the vicinity of the boiler.
– Do not allow unsupervised children near the boiler.
Service/inspection of the boiler and the system is recommended once a year. Maintenance, service and cleaning are specified in the Installation Instructions.
Before the heating season begins, it is recommended that the boiler and burner be serviced by a qualified heating contractor. Service contracts may be established through gas suppliers or other licensed contractors in your area.
WARNING
As there are no user-serviceable parts on the boiler, burner or control, the end-user must not perform service activities or adjustments of any kind on system components. Failure to heed this warning can cause property damage, severe personal injury, or loss of life.
WARNING
Improper installation, adjustment, service, or maintenance can cause flue products to flow into living space. Flue products contain poisonous carbon monoxide gas which can cause nausea or asphyxiation resulting in severe personal injury or loss of life.
CAUTION
Should overheating occur or the gas supply fail to shut off, do not disconnect the electrical supply to the pump. Instead, shut off the gas supply at a location external to the boiler.
WARNING
The operator/ultimate owner is required to have the heating boiler, burners, and controls checked, as a minimum once per year, by the original installer or by a competent heating contractor familiar with the equipment. Defects must be corrected immediately.
CAUTION
Do not use this boiler if any part has been under water. Immediately call a qualified heating contractor to inspect the boiler and to replace any part of the control system and any gas control which has been under water.
WARNING
Do Not operate the boiler without the cover in place.
Frozen water pipe hazard
Your heating boiler is designed to provide a warm and comfortable living environment. It is not designed to ensure against freezing of water pipes.
The boiler is equipped with several safety devices that are designed to shut down the boiler and to prevent it from restarting in the event of various unsafe conditions.
If your boiler remains off for an extended period of time during cold weather, water pipes may freeze and burst, resulting in extensive water damage and conditions in which mold could grow. Certain molds are known to cause respiratory problems, as well as to pose other serious health risks. In case of water damage, immediate measures should be taken to dry out affected areas as quickly as possible to prevent mold from developing.
If your home will be unattended for an extended period of time during cold weather, you should…
Shut off the water supply to the building, drain the water pipes and add an antifreeze for potable water to drain traps and toilet tanks. Open faucets where appropriate.
or..
Have someone check the building frequently during cold weather and call a qualified service agency if required.
or…
Install a reliable remote temperature sensor that will notify somebody of freezing conditions within the home.
WARNING
Failure to protect against frozen pipes could result in burst water pipes, serious property damage and/or personal injury. Boiler may shut down. Do not leave your home unattended for long periods of time during freezing weather conditions without turning off the water supply and draining water pipes or otherwise protecting against the risk of frozen pipes.
Replacement components, spare and wear parts
IMPORTANT
Components which are not tested with the heating system may damage the heating system or affect its functions. Installation or replacement may only be performed by a qualified heating contractor.
WARNING
If you notice fire coming from the boiler, call the fire department immediately! Do not attempt to extinguish the fire unless qualified to do so.
WARNING
Fire causes a risk of burns and explosion!

Shut down the boiler
Close fuel shut-off valves
Use a tested fire extinguisher, class ABC.

Installation area conditions
WARNING
Incorrect ambient conditions can lead to damage to the heating system and put safe operation at risk.
Ensure ambient temperatures are higher than 32°F (0°C) and lower than 95°F (35°C).

Prevent the air from becoming contaminated by halogenated hydrocarbons (e.g. as contained in paint solvents or cleaning fluids) and excessive dust (e.g. through grinding or polishing work). Combustion air for the heating process, and ventilation of the boiler room must be free of corrosive contaminants. To that end, any boiler must be installed in an area that has no chemical exposure.
The list below indicates the main, currently known sources.
Avoid continuously high levels of humidity (e.g. through frequent drying of laundry).
Never close existing ventilation openings.

Sources of combustion and ventilation air contaminants
Areas likely to contain contaminants:

New building construction
Swimming pools
Remodelling areas, hobby rooms
Garages with workshops
Furniture refinishing areas
Dry cleaning/laundry areas and establishments
Auto body shops
Refrigeration repair shops
Metal fabrication plants
Plastic manufacturing plants
Photo processing plants
Beauty salons

Products containing contaminants:

Chlorine-type bleaches, detergents and cleaning solvents found in household laundry rooms
Paint and varnish removers
Hydrochloric acid, muriatic acid
Chlorine-based swimming pool chemicals
Spray cans containing chlorofluorocarbons
Chlorinated waxes and cleaners
Cements and glues
Refrigerant leaks
Calcium chloride used for thawing
Sodium chloride used for water softening salt
Permanent wave solutions
Adhesives used to fasten building products and other similar items
Antistatic fabric softeners used in clothes dryers

General Information

Intended Use
The boiler is only intended to be installed and operated in sealed unvented heating systems with due attention paid to the associated installation, service and operating instructions. It is only designed for the heating of water that is of potable water quality.
Intended use presupposes that a fixed installation in conjunction with permissible, system-specific components has been carried out.
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 manufacturer in each individual case.
Incorrect usage or operation of the boiler (e.g. the boiler being opened by the system user) is prohibited and results 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 (continuous) operation

Your heating contractor will configure the operating mode during commissioning in accordance with your heating system. These instructions describe both operating modes.
Weather-compensated operation
In weather-compensated operation, the supply water temperature is controlled according to the outside temperature.
The lower the outside temperature, the higher the supply temperature. This means that more heat is provided for central heating on cold days than on warmer days.
Constant operation
In constant operation the boiler provides heating water with a constant supply temperature regardless of the outside temperature.
Operation
The control unit is integrated into the boiler and controls all functions of your system. The control unit is operated via a 3.5 inch black/white screen.
A wireless (WiFi) module is integrated into the control unit.
This means the system can also be operated remotely via the internet using the “ViCare” app.
Software Licences
This product contains third party software, including open source software. You are authorized to use this third party software in compliance with the relevant licensing terms.

Licences for the integrated wireless module: See page 23.
Licences for the programming unit: See page 23.

Commissioning
The commissioning and matching of the boiler 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.
Your System is Preset
Your heating system is preset at the factory and is therefore ready for operation following commissioning by your contractor:
Note: The following paragraph “DHW heating” is not valid for operation with a DHW tank with temperature switch (such as an Aquastat).

DHW tank heating

DHW is heated to 122°F (50°C) “Set DHW temperature”. Any installed DHW recirculation pump is switched on.

DHW comfort function

Only for Vitodens 100-W B1KE boilers. Your heating contractor can activate the DHW comfort function.
This makes DHW available faster.

Frost protection

Your boiler and DHW tank (if installed) are protected against frost.

Wintertime/summertime changeover

This changeover is automatic.

Date and time

The date and time were set by your heating contractor.
You can change these settings at any time to suit your individual requirements.

Power failure
All settings are saved if there is a power failure.
Energy Saving Tips
Saving energy when using central heating

Do not overheat your home. Every degree of room temperature reduction saves up to 6% on your heating bills.
Weather-compensated operation:
Do not set your standard room temperature (temperature level “Standard”) higher than 68°F (20°C)
Heat your home to the reduced temperature at night or during regular absences:
– Weather-compensated operation:
Reduced room temperature
– Constant operation:
Reduced supply temperature

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 13.
Switch on DHW recirculation only for those times in which you regularly use hot water. For additional energy saving functions, please contact your contractor.

Tips for Greater Comfort
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 13.
Example: You need more DHW in the morning than in the daytime.
If you need a higher DHW temperature for a short while, select “One-off heating DHW”: See page 17.

Operation

Operating Principles
Display
You can adjust any setting on your system centrally at the control unit.
The control unit is equipped with a black/white screen.
For settings and to call up information, tap the on screen buttons.
Room temperature controller for room temperaturedependent operation
If a room temperature controller is installed in one of your rooms, you can adjust some settings at your room temperature controller.
Operating instructions for room temperature controller
Status display with Lightguide
A red illuminated strip (Lightguide) is displayed at the lower or upper edge of the control unit during operation.
Meaning of the display:

Lightguide pulsates slowly:
Display is in standby mode.
Lightguide is illuminated constantly:
You are operating the control unit. Every input operation is confirmed by a brief flashing.
Lightguide flashes quickly:
There is a fault in the system.

Note: You can switch off the Lightguide. See page 19.
Screen Displays
Standby
The display backlighting is switched off after approximately 2 minutes.
Home screen
After starting or activating the control unit the home screen is shown.
The home screen shows information about the DHW.
Call up the home screen as follows:

Standby is active: Tap any button.
From anywhere in the menu:
Tap repeatedly, until the home screen is displayed.

Buttons

Calls up the main menu.
Takes you one step back.
To select a menu or adjust values.
OK Confirms your selection or saves the setting made.

Special key combinations:

Direct to system overview from a menu:
press and hold for approx. 4 sec.
Establishing internet connection:
In the home screen, press and hold OK for approx. 4 sec.
Switching WiFi on and off:
+ OK: Press and hold simultaneously for approx. 4 sec.
Calling up burner status:
+ : Press and hold simultaneously for approx. 4 sec.

System Overview
Depending on the system equipment level, you can check the most important information in the system overview:

Heating
DHW (home screen)

Note: Not valid for systems with a DHW tank with temperature switch (such as an Aquastat).

Network
Outside temperature (for weather-compensated operation)
Date and time (for constant operation)

Tap the following buttons:

Call up the home screen.
for the required information

Calling up further information: See page 23.
Overview of the “Main menu”
In the main menu, you can check and adjust all of the settings for the boiler’s range of functions. You can find the menu overview on page 32.
Available menus:
Active messages (if available)

Turn on/off
DHW
Network
Energy metering
Information
Settings

Tap the following buttons:

Call up the home screen.
1. for the required menu
OK to confirm

Time Programs

Procedure for Setting a Time Program
The following explains how to input the settings for a time program. The specifics of the individual time programs can be found in the relevant chapters.
Time programs and time phases
Not valid for operation with a DHW tank with temperature switch (such as an Aquastat).
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.
Different 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
Central heating| A time program for central heating can be set at the room temperature controller (field supplied).
Operating instructions for room temperature controller
DHW heating| DHW heating is switched on.
The water in the DHW tank is heated to the target DHW temperature.| DHW heating is switched off.

The time programs can be set individually to be the same, or different, for every day of the week.
Setting time phases
Not valid for operation with a DHW tank with temperature switch (such as an Aquastat).
You can set up to 4 time phases in each time program.
For each time phase, you select the start and end points.
Note: • DHW is not heated between the time phases.
Frost protection for the DHW tank is active if no DHW tank with temperature switch is active.
• When setting time programs, bear in mind that your system needs some time to heat the DHW tank to the required temperature.
Note: With a “Combi boiler”, the “DHW comfort function” is active during the set time phases (plate heat exchanger is kept at temperature).
The time phases need to be deleted to switch off the comfort function.
Example:
Time program for “Monday” for DHW

Time phase 1: 06:30 to 12:00
Time phase 2: 15:00 to 21:00

Tap the following buttons:

Call up the home screen.
1. for “DHW”
OK to confirm
for “Time programs”
OK to confirm
for “DHW”
OK to confirm
for “DHW”
OK to confirm
for “Monday” (required day of the week)
OK to confirm
for the time phase “06:00 – 22:00” (required time phase that needs to be changed)
OK to confirm
for “Edit”
OK to confirm
for the start time “06” (hour)
OK to confirm
for the start time “30” (minutes)
OK to confirm
for the end time “12” (hour)
OK to twice confirm
for the end time “00” (minutes)
OK to confirm
for “Add” (further time phase)
OK to confirm
for the start time “15” (hour)
OK to confirm
for the start time “00” (minutes)
OK to confirm
for the end time “21” (hour)
OK to confirm
for the end time “00” (minutes)
OK twice to confirm
for approx. 4 sec, to exit the menu.

Setting a time program for the DHW recirculation pump
Tap the following buttons:

Call up the home screen.
1. for “DHW”
OK to confirm
for “Time programs”
OK to confirm
for “DHW circulation pump”
OK to confirm

For further steps, see above, from step 8.
Copying the time program to other days of the week
Explanation of the procedure for DHW.
Example:
You want to copy the time program for “Monday” over to “Thursday” and “Friday”.
Tap the following buttons:

Call up the home screen.
1. for “DHW”
OK to confirm
for “Time programs”
OK to confirm
for “DHW”
OK to confirm
for “DHW”
OK to confirm
for “Monday” (required days to which the time program is to be copied)
OK to confirm
for “Copy”
OK to confirm
for “Thursday” (required days to which the time program is to be applied)
Place a tick next to Thursday with OK
for “Friday” (required days to which the time program is to be applied)
Place a tick next to Friday with OK
for “Copy to”
OK to confirm
OK to acknowledge the information
for approx. 4 sec, to exit the menu.

Additional time programs can be copied and applied correspondingly:
You can simultaneously transfer time programs for DHW heating to the DHW recirculation pump or vice versa.
Copy “DHW” or “DHW circulation pump” for this.
Changing time phases
Explanation of the procedure using DHW as an example.
Example:
For “Monday”, you want to change the end time for time phase 2 to 19:00.
Tap the following buttons:

Call up the home screen.
1. for “DHW”
OK to confirm
for “Time programs”
OK to confirm
for “DHW”
OK to confirm
for “DHW”
OK to confirm
for “Monday” (required day of the week)
OK to confirm
for the time phase “15:00 – 21:00” (required time phase that needs to be changed)
OK to confirm
for “Edit”
OK to confirm
OK twice to confirm the unchanged start time (hour and minutes)
for the end time “19” (hour)
OK to confirm the new end time (hour)
OK to confirm the unchanged entries for the end time (minutes)
OK to acknowledge the information
for approx. 4 sec, to exit the menu

Deleting time phases
Explanation of the procedure using DHW as an example.
Example:
For “Monday”, you want to delete time phase 2.
Tap the following buttons:

Call up the home screen.
1. for “DHW”
OK to confirm
for “Time programs”
OK to confirm
for “DHW”
OK to confirm
for “DHW”
OK to confirm
for “Monday” (required day of the week)
OK to confirm
for the time phase “15:00 – 19:00” (required time phase that needs to be deleted)
OK to confirm
for “Delete”
OK to confirm
OK to acknowledge the information
for approx. 4 sec, to exit the menu

DHW Heating

DHW Temperature
For the Vitodens 100-W B1KE with instantaneous DHW a scalding label is placed on the side of the boiler.
DANGER

Water temperature over 125° F (52° C) can cause severe burns instantly or death from scalds. Children, disabled and elderly are at highest risks of being scalded.
See instruction manual before setting temperature at water heater.
Feel water before bathing or showering. Temperature limiting valves are available, see manual.
5167 200 v1.1
Note: When operating with a DHW tank with temperature switch (such as an Aquastat), the maximum target value of the boiler applies (depending on the boiler) and cannot be changed.
WARNING
Hot water can cause serious injuries.
Do not touch hot water.
Note: For reasons of good hygiene, you should not set the
DHW temperature lower than 122°F (50°C).
Tap the following buttons:

Call up the home screen.
1. for “DHW”
OK to confirm
for “Temperature level”
OK to confirm
for “Standard”
OK to confirm
Set the target value
OK to confirm
OK to acknowledge the information
for approx. 4 sec, to exit the menu.

Operating Programs for DHW Heating
Note: Not valid for systems with a DHW tank with temperature switch (such as an Aquastat).

Operating program	Function
DHW heating
“DHW” “ON”	DHW is heated in accordance with the DHW temperature and time

program specified (see chapter “DHW heating”).
“DHW” “OFF”| • No DHW heating
• Frost protection for the DHW tank is active.

Switching DHW Heating On or Off
Tap the following buttons:

Call up the home screen.
1. for “Turn on/off”
OK to confirm
for “DHW”
OK twice to confirm
for “ON” or “OFF”
OK to confirm
OK to acknowledge the information
for approx. 4 sec, to exit the menu.
Note: To set a time program, see page 13.

One-off DHW Heating Outside the Time Program
Note: Not valid for systems with a DHW tank with temperature switch (such as an Aquastat).
If you require hot water outside the set time phases, switch on “One-off heating DHW”. The DHW tank is heated once to the set DHW temperature.
This function has a higher priority than other functions, such as the time program for example.
Switching on “One-off heating DHW”
Tap the following buttons:

Call up the home screen.
1. for “DHW”
OK to confirm
for “One-off heating”
OK to confirm
to activate
OK to confirm
OK to acknowledge the information

Switching off “One-off heating DHW”
“One-off heating DHW” ends as soon as the target
DHW temperature has been reached.
To terminate “One-off heating DHW” early, tap the following buttons:

Call up the home screen.
1. for “DHW”
OK to confirm
for “One-off heating” (active)
OK to confirm
for “Stop”
OK to confirm
OK to acknowledge the information

Increased DHW Hygiene
WARNING
High DHW temperatures can cause scalding, e.g. if the DHW temperature is above 140°F (60°C).
Mix with cold water at the draw-off points.
You can heat the water in the DHW tank to above
140°F (60°C) once a week or for an hour every day.
This function is regularly carried out at the specified time.
Note: Not valid for systems with a DHW tank with temperature switch (such as an Aquastat).
Switching on the “Hygiene program”
Tap the following buttons:

Call up the home screen.
1. for “DHW”
OK to confirm
for “Time program”
OK to confirm
for “DHW”
OK to confirm
for “DHW”
OK to confirm
for “Hygiene Program”
OK to confirm
for the required day or everyday
OK to confirm
for required time (hour)
OK to confirm
for required time (minutes)
Press twice to confirm
for approx. 4 sec, to exit the menu.

Switching off the “Hygiene program”
Tap the following buttons:

Call up the home screen.
1. for “DHW”
OK to confirm
for “Time program”
OK to confirm
for “DHW”
OK to confirm
for “DHW”
OK to confirm
for “Hygiene program”
OK to confirm
for “Stop”
OK to confirm
OK to acknowledge the information.

Switching DHW scald protection on/off
Note: Not valid for systems with a DHW tank with temperature switch (such as an Aquastat).
Tap the following buttons:

Call up the home screen.
1. for “DHW”
OK to confirm
for “Temperature level”
OK to confirm
for “Scald protection”
OK to confirm
for “On” or “Off”
OK twice to confirm
Note: With scald protection switched off, a target DHW temperature of over 140°F (60°C) can be set, depending on the boiler. There is an increased risk of scalding!

Further Adjustments

Setting the Display Brightness
Tap the following buttons:

Call up the home screen.
1. for “Settings”
OK to confirm
for “Display brightness”
OK to confirm
for “Display”
OK to confirm
for the selected value
OK to confirm
for approx. 4 sec, to exit the menu.

Switching the “Lightguide” On and Off
Depending on the type of boiler, a red illuminated strip (Lightguide) is displayed at the lower or upper edge of the control unit during operation.
In the delivered condition, the Lightguide is switched on.
You can switch off the Lightguide.
Meaning of the display:

Lightguide pulsates slowly:
Display is in standby mode.
Lightguide is illuminated constantly:
You are operating the control unit. Every input operation is confirmed by a brief flashing.
Lightguide flashes quickly:
There is a fault in the system.

Tap the following buttons:

Call up the home screen.
1. for “Settings”
OK to confirm
for “Display brightness”
OK to confirm
for “Lightguide”
OK to confirm
for “ON” or “OFF”
OK to confirm
for approx. 4 sec, to exit the menu.

Note: Faults are shown by flashing lights even if the Lightguide is switched off.
Setting the “Time” and “Date”
The “Time” and “Date” are set at the factory. If your system has been shut down for a prolonged period, you may need to reset the “Time” and “Date”.
Set time
Tap the following buttons:

Call up the home screen.
1. for “Settings”
OK to confirm
for “Date and time”
OK to confirm
for “Time”
OK to confirm
for “Time”
OK to confirm
for the hour
OK to confirm
for the minute
OK to confirm
for approx. 4 sec, to exit the menu.

Setting the format for the time
Tap the following buttons:

Call up the home screen.
1. for “Settings”
OK to confirm
for “Date and time”
OK to confirm
for “Time”
OK to confirm
for “Format”
OK to confirm
for the required format:
• “12 h”
• “24 h”
OK to confirm
for approx. 4 sec, to exit the menu.

Set the date
Tap the following buttons:

Call up the home screen.
1. for “Settings”
OK to confirm
for “Date and time”
OK to confirm
for “Date”
OK to confirm
for “Date”
OK to confirm
for the year
OK to confirm
for the month
OK to confirm
for the day
OK to confirm
for approx. 4 sec, to exit the menu.

Setting the format for the date
Tap the following buttons:

Call up the home screen.
1. for “Settings”
OK to confirm
for “Date and time”
OK to confirm
for “Date”
OK to confirm
for “Format”
OK to confirm
for the required format:
• “DD.MM.YY”
• “MM/DD/YY”
• “YY-MM-DD”
OK to confirm
for approx. 4 sec, to exit the menu.

Summertime/Wintertime Automatic Changeover
Tap the following buttons:

Call up the home screen.
1. for “Settings”
OK to confirm
for “Date and time”
OK to confirm
for “Time”
OK to confirm
for “Time changeover”
OK to confirm
for “ON” or “OFF”
OK to confirm
for approx. 4 sec, to exit the menu.

Setting the “Language”
Tap the following buttons:

Call up the home screen.
1. for “Settings”
OK to confirm
for “Language”
OK to confirm
for the required language
OK to confirm
for approx. 4 sec, to exit the menu.

Setting “Units”
You can adjust all available units, e.g. for temperature, etc.
Note: The format for date and time can be set in the “Date and time” menu.
Tap the following buttons:

Call up the home screen.
1. for “Settings”
OK to confirm
for “Units”
OK to confirm
for the required unit, e.g. “Temp./length”
OK to confirm
for the required setting
OK to confirm
(for approx. 4 sec, 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 connection via WiFi: See the following chapter.
The required credentials for internet access to the control unit via app can be found on the adjacent label:
Attach the WiFi label here
Establishing a WiFi connection
Tap the following buttons:

Call up the home screen.
1. Press and hold OK for approx. 4 sec.
  Information is displayed.
Follow the instructions in the app.
Fault while establishing the connection
“E10” Could not connect to local network.
Note: If “E10” appears on the display, check the connection to the router and whether the network password is correct.
“E12” Connection to the server cannot be established.
Note: If “E12” appears on the display, re-establish the connection at a later time.
At the end, OK to confirm
OK to acknowledge the information
for approx. 4 sec, to exit the menu.

Switching WiFi on and off
Tap the following buttons:

Call up the home screen.
+ OK: Press and hold simultaneously for approximately 4 sec.

Energy Metering Settings
You can set the values for the correction factor and calorific value to determine consumption arithmetically. To call up the values: See page 26.
Tap the following buttons:

1. for “Energy metering”
OK to confirm
for “Consumption”
OK to confirm
for “Settings”
OK to confirm
for “Correction factor” or “Calorific value”
OK to confirm
to enter values.
OK to acknowledge the information

Restoring Factory Settings
You can reset all entries and values to their factory settings.
Settings and values that are reset with all operating modes:

Room temperature or supply temperature
Operating program
DHW temperature
Time program for DHW heating

Tap the following buttons:

Call up the home screen.
1. for “Settings”
OK to confirm
for “Factory settings”
OK to confirm
OK to acknowledge the information

Calling Up Information

Calling Up Help Messages
You can call up help messages relating to some of the displays and functions.
Tap the following buttons:

within the menu if necessary for “Help”
OK to confirm
to exit the screen

Checking Information
Depending on the system equipment level and the settings made, you can call up current system data, e.g. temperatures.
Note: Detailed options for checking the individual groups can be found in chapter “Menu overview”.
Note: Here you will find information about the temperature controller and heating circuit pump.
Tap the following buttons:

Call up the home screen.
1. for “Information”
OK to confirm
for the required group
OK to confirm
for the required information
for approx. 4 sec, to exit the menu.

Checking the Energy Metering
Tap the following buttons:

Call up the home screen.
1. for “Energy metering”
OK to confirm
for “Consumption”
OK to confirm
to select the current month or last month.
OK to confirm
read off the value.
Note: The value shown is calculated and may differ from the actual consumption level.
Not suitable for billing purposes.
for approx. 4 sec, to exit the menu.

Calling Up Licences for the Programming Unit
Calls up the licence for the programming unit.
Tap the following buttons:

Call up the home screen.
1. for “Information”
OK to confirm
for “Open source licences”
OK to confirm
for approx. 4 sec, to exit the menu.

Calling Up Licences for the Integrated Wireless Module
Switch on the WiFi to call up online legal information, such as open source licences:
In the home screen, press and hold OK for approx. 4 sec.
Calling up open source licences

Call up the WiFi settings of your smartphone or PC.
Connect your smartphone or PC to the WiFi “Viessmann-”.
You will be asked to enter a password.
Enter the WiFi password.
Note: The credentials can be found on the label:
See chapter “Switching internet access ON or OFF”.
With your connected mobile device, open http://192.168.0.1 in your internet browser
Follow the link “Open Source Components Licences”.

Third party software
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 licence conditions as provided under the link below.
A list of the third party software components used and of licence texts can be accessed by connecting your boiler, as explained in the instruction manual.
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).
Disclaimer
The open source software contained in this product is distributed WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. The single licences may contain more details on a limitation of warranty or liability.
How to obtain the source code
The software included in this product may contain copyrighted software that is licensed under a licence requiring us to provide the source code of that software, such as the GPL or LGPL. To obtain the complete corresponding source code for such copyrighted software, please contact us via the contact information provided in section 5 below, indicating the build number you will find under the “Open Source Licences” link mentioned in section 1 above. This offer is not limited in time and is valid for anyone in receipt of this information.
Checking Service Messages
Your contractor can set service intervals. “Active messages” is displayed if these service intervals are exceeded.
Tap the following buttons:

OK to confirm
1. for “Active messages”
OK to confirm
for “Maintenance”
OK to confirm
for the required message
OK to confirm
Further information regarding the message is displayed.
Make a note of the service message number. For example: P.1 “Interval until the next service”.
This enables the contractor to be better prepared and may save you unnecessary travelling costs.
Please notify your contractor.
Note: If the service cannot be carried out until a later date, the service message will be displayed again the following Monday.
for approx. 4 sec, to exit the menu.

Checking Fault Messages
WARNING
If faults are not rectified, they may have life threatening consequences.
Do not reset the burner several times in quick succession.
Immediately notify your contractor if a burner fault occurs.
Your contractor will be able to analyze the cause and rectify the fault.
Burner fault
Indication on the display:
“The burner control unit is locked out”
Tap the following buttons:

for “Ignore”
OK to confirm
The burner remains locked out.
OK twice to acknowledge the information
1. for “Active messages”
OK to confirm
for “Faults”
OK to confirm
for the required message
OK to confirm
Further information regarding the message is displayed.
Make a note of the fault number.
This enables the contractor to be better prepared and may save you unnecessary travelling costs.
Please notify your contractor.
for approx. 4 sec, to exit the menu..

If your system has developed faults, “Burner fault” or “Active messages” are displayed. The Lightguide is flashing: See chapter “Switching the Lightguide on and off”.
Note: 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.
Faults without burner fault
Tap the following buttons:

OK to confirm
press and hold for approx. 4 sec.
OK
for “Error message”
OK to confirm
for the required message
OK to confirm
Further information regarding the message is displayed.
Make a note of the fault number. For example: F.14 “Short circuit, outside temperature sensor”.
This enables the contractor to be better prepared and may save you unnecessary travelling costs.
to go back a step in the menu
for further messages
to go back a step in the menu
for “Contractor”
The contact details of your heating contractor are displayed (if your contractor has entered them, via a software tool).
Please notify your contractor.
for approx. 4 sec, to exit the menu.

Resetting the burner after a burner fault
If the burner is locked due to a fault, you can reset the burner.
Reset via home screen:
Tap the following buttons:

for “Unlock”
OK twice to confirm

Reset via submenu:
Tap the following buttons:

1. for “Active messages”
OK to confirm
for “Burner fault”
OK to confirm
for “Unlock”
OK to confirm
OK to acknowledge the information
for approx. 4 sec, to exit the menu.

Acknowledging Messages
Tap the following buttons:

Call up the home screen.
1. for “Active messages”
OK to confirm
for “Acknowledge”
OK to confirm
OK to acknowledge the information All pending messages are acknowledged.

Checking Messages
Tap the following buttons:

Call up the home screen.
1. for “Active messages”
OK to confirm
for the required type of message
If there are any corresponding messages:
• “Burner faults”
• “Faults”
• “Warnings”
• “Maintenance”
• “Status”
• “Information”
OK to confirm
The messages are shown listed.
for the required message
OK to confirm
Further information regarding the message is displayed.
for approx. 4 sec, to exit the menu.

Calling Up the Message History
You want to call up the history of all past messages (faults, warnings, notes, etc.).
Tap the following buttons:

Call up the home screen.
1. for “Information”
OK to confirm
for “System information”
OK to confirm
for “Message history”
OK to confirm
to select a message group from fault, warning, note, status or information.
OK to confirm
to select the message
OK to view the message.
for approx. 4 sec, to exit the menu.

Emissions Test Mode

Emissions Test Mode
Emissions test mode for testing flue gas must only be activated by your certified contractor.
If possible, have the emissions test carried out during the heating season.
Emissions test mode is activated via the service menu.
Tap the following buttons to access the service menu:

Call up the home screen.
1. for “Settings”
OK to confirm
for “Service”
OK to confirm
for “Test mode”
Selet “Yes”
OK to confirm
for “Test mode”
OK to confirm
Select “Start”
OK to confirm
Note: The settings and functions in the service section can be found in the installation and service instructions.
Vitodens 100-W installation and service instructions

High Limit Safety Cut-Out Test
Tap the following buttons:

Call up the home screen.
1. for “Settings”
OK to confirm
for “Service”
OK to confirm
for “Yes”
OK to confirm
for “Test high limit safety cutout”
OK to confirm
for “Yes”
OK to confirm

Switching On and Off

Switching Off the Boiler Without Frost Protection Monitoring

No central heating
No DHW heating
Frost protection for the boiler and the DHW tank is not active.
1. Turn off the ON/OFF switch.
2. Close the gas shut-off valve and safeguard against unauthorized reopening.

IMPORTANT
If outside temperatures of below 37°F (3°C) are expected, take appropriate measures to protect the system from frost.
If necessary, contact your contractor.
Note:

As they are not being supplied with power, the circulation pumps and diverter valves may seize up.
If your system has been shut down for a prolonged period, you may need to reset the “Time” and “Date”: See page 19.

Switching On the Boiler![VIESSMANN VITODENS 100-W Wall Mounted Gas Fired

parts3](https://manuals.plus/wp-content/uploads/2023/12/VIESSMANN- VITODENS-100-W-Wall-Mounted-Gas-Fired-parts3.jpg) A ON/OFF switch
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.
  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 A.
  • After a short while, the home screen is shown on the display.
  • The Lightguide is illuminated constantly.
  Your system and, if installed, your remote controls are ready for operation.
4. Check the system pressure at the pressure gauge.
  If the displayed pressure is below 12 psi (0.8 bar), top up the water or notify your heating contractor.

What to do if…

Rooms are too Cold

Cause	Remedy
The boiler is switched off.	Turn on the ON/OFF switch: See page 28.

Switch on the power supply to your system, e.g. at a separate MCB/fuse or mains isolator.
Incorrect control unit settings.| Central heating must be enabled.
Check the settings and correct if necessary:
Operating program: See page 16.
Supply temperature
Time: See page 19.
The DHW tank is being heated.| Wait until the DHW tank has been heated up.
Reduce the DHW draw-off rate or temporarily reduce the set DHW temperature as required.
No fuel.| Open the gas shut-off valve. If necessary, check with your gas supply utility.
“Burner fault” is displayed.| Reset the burner: See page 25.
WARNING
If faults are not rectified, they may have life threatening consequences.
Do not reset the burner several times in quick succession.
Immediately notify your contractor if a burner fault occurs.
Your contractor will be able to analyze the cause and rectify the fault.
“Error message” is displayed.| Check what type of fault it is. Make a note of the fault message and acknowledge the fault: See page 25.
If necessary, notify your contractor.

Rooms are too Hot

Cause	Remedy
Incorrect control unit settings.	Check the settings and correct if necessary:

Operating program: See page 16.
Supply temperature
Time: See page 19.
“Error message” is displayed.| Check what type of fault it is. Make a note of the fault message and acknowledge the fault: See page 25.
If necessary, notify your contractor.

There is no Hot Water

Cause	Remedy
The boiler is switched off.	Turn on the ON/OFF switch

Switch on the power supply to your system, e.g. at a separate MCB/fuse or mains isolator.
Incorrect control unit settings.| Central heating must be enabled.
Check the settings and correct if necessary:
Operating program: See page 16.
DHW temperature: See page 16.
Time: See page 19.
Time program for DHW heating: See page 13.
No fuel.| Open the gas shut-off valve. If necessary, check with your gas supply utility.
“Error message” is displayed.| Check what type of fault it is. Make a note of the fault message and acknowledge the fault: See page 25. If necessary, notify your contractor.

The DHW is too Hot

Cause	Remedy
Incorrect control unit settings.	Check and correct the set DHW temperature if

necessary: See page 16.
The hygiene function is switched on.| Wait until the hygiene function has been completed.

“Burner fault” is Displayed

Cause	Remedy
Burner fault	Proceed as described on page 25.

“Active messages” is Displayed

Cause	Remedy

The time for a service as specified by your contractor has arrived. or System fault| Proceed as described on page 25.

“Trade fair mode” is Displayed

Cause	Remedy
Trade fair mode is active. No heating, no DHW heating.	Notify your

contractor.

Maintenance

Cleaning
The boilers can be cleaned with a commercially available domestic cleaning agent (non-scouring).
Clean the surface of the operating unit with a microfiber cloth.
Inspection and Maintenance
Regular maintenance ensures trouble-free, energy efficient, environmentally responsible and safe heating. 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 contract with your local heating contractor.
Boiler
Increased contamination raises the flue gas temperature and thereby increases energy losses. We recommend the boiler be cleaned annually.
DHW tank
Maintenance or cleaning should be carried out no later than 2 years after commissioning and thereafter as required.
Only a qualified contractor should clean the inside of the DHW tank and the DHW connections.
If any water treatment equipment is installed in the cold water supply of the DHW tank, ensure this is refilled in good time.
For this, observe the manufacturer’s instructions.
Temperature and pressure relief valve (DHW tank)
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 soiled.
Water may drip from the safety valve during a heat-up process. The outlet is open to the atmosphere.
CAUTION
Overpressure can cause damage.
Do not close the safety valve.
Potable water filter (if installed)
To maintain high hygienic standards, proceed as follows:

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.

Appendix

Overview of “Main menu”
Note: Depending on the features of your system, not all of the displays and checks listed may be available under .
Tap the following buttons:

Call up the home screen.
for the required information.

Heating

| Set supply temperature
• Actual supply temperature
• Burner modulation
| Operating program:
• Standby
• Summer mode
• Frost protection

Only for weather-compensated operation:
Outside temperature
Only for constant operation:
Date and time

WiFi

| Connection status
SSID
Signal strength
DHW
Note: Not valid for systems with a DHW tank with temperature switch (such as an Aquastat).
| On/Off
One-off heating
Current target temperature

Note: Depending on the features of your system, not all of the displays and checks listed may be available.
Tap the following buttons:

Call up the home screen.
1. for the required menu.

Trade fair mode active

| If the boiler has been set by the contractor to “demonstration” mode, e.g. for exhibitions.
No central heating, hot water or frost protection available!
Active messages (if there are any current messages)

| Acknowledge (if there are faults or service messages)
Burner fault
Faults
Warnings
Maintenance
Status
Information
Contractor
Turn on/off
Note: Not valid for systems with a DHW tank with temperature switch (such as an Aquastat).

| DHW
|
DHW
Note: Not valid for systems with a DHW tank with temperature switch (such as an Aquastat).

| Time program
| | DHW
Hygiene program
DHW recirculation pump
One-off heating
Temperatures
| Standard
Scald protection
Network

| SSID
Signal strength
Status
Energy metering

| Consumption
Information

| Boiler information
| Burner Status
Boiler serial number
Device serial number
Software version
Burner hours run
Thermostat function
Heating circuit pump
Type of heating
Slope
Level
Altitude at the installation site
DHW temperature
Contractor
System information
| Active messages
Message history
Open source licences
Settings

| Date and time
| Date
Time
Display brightness
| Display
Lightguide
Language
Units
| Temp./length
Factory settings
Service menu

Terminology
Standby mode
Boiler is switched off. Only frost protection of boiler and DHW tank is active. No central heating, no DHW heating
System version
The system version describes the components of your system.
Some examples:

Boiler
Heating circuit pump
Mixing valve
Valves
Electronics module
Radiator

Every system is individually configured and adapted to the local conditions by your heating contractor.
Operating program
The operating program enables you to define the following, for example:

How you heat your rooms
Whether you heat DHW

Operating status
See “Time program”.
Operating mode
See “Heating operation”.
Infloor heating
Infloor heating systems are slow, low temperature heating systems that respond only very slowly to short term temperature changes.
Heating with reduced room temperature at night therefore does not result in any significant energy savings.
Heating operation
Operating modes
To heat your home, the boiler provides heat as specified by the set supply temperature. The operating mode determines whether the supply temperature is specified with a fixed value or whether it is automatically calculated and adjusted subject to several ancillary conditions.
Your contractor can configure the following operating modes during commissioning:

Weather-compensated operation
Constant operation

Constant operation
In constant operation the boiler provides heating water with a constant supply temperature regardless of the outside temperature.
Weather-compensated heating operation
In weather-compensated operation, the supply temperature is controlled subject to outside temperature.
More heat is made available at lower outside temperatures than at a higher ones.
The outside temperature is captured and transmitted to the control unit by a sensor fitted outside the building.
Heating curve
Heating curves illustrate the relationship between the outside temperature, the target room temperature and the supply temperature. The lower the outside temperature, the higher the supply temperature.
In order to guarantee sufficient heat with minimum fuel consumption at any outside temperature, the conditions of your building and system must be taken into consideration. The heating curve is set by your contractor for this purpose. VIESSMANN VITODENS 100-W Wall Mounted Gas Fired -
parts4 Setting the slope and shift, taking the heating curve as an example Factory settings:

Slope = 1.4
Shift = 0

The illustrated heating curves apply with the following settings:

Heating curve shift = 0
Standard room temperature (target room temperature) = 68°F (20°C)

VIESSMANN VITODENS 100-W Wall Mounted Gas Fired -
parts5 For outside temperature 7°F (−14°C):
A Infloor heating system: Slope 0.2 to 0.8
B Low temperature heating system: Slope 0.8 to 1.6
C System with a supply temperature in excess of 167°F (75°C), slope 1.6 to 2.0
Note: Setting the slope or shift too high or too low will not cause any damage to your heating system. Both settings affect the level of the supply temperature, which may then be too low or unnecessarily high. A If you change the slope:
The steepness of the heating curves changes.
B If you change the shift:
The heating curves are shifted in parallel in a vertical direction.
B If you change the standard room temperature (target room temperature):
The heating curves are offset along the “Target room temperature” axis.
Heating circuit pump
Circulation pump for circulating the heating water in the heating circuit
Room air dependant operation
The combustion air is drawn from the room where the boiler is installed.
Direct vent operation
Combustion air is drawn from outside the building.
Return temperature
The return temperature is the temperature at which the heating water leaves a system component such as a heating circuit.
Safety relief 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 tank.
The heating circuits are also equipped with safety valves.
Temperature target
See “Target temperature”.
Target temperature
Specified temperature that should be reached, e.g. target DHW temperature.
Drinking water filter
A device that removes solids from potable water.
The drinking water filter is installed in the cold water pipe upstream of the DHW tank or the instantaneous water heater.
Supply temperature
The supply temperature is the temperature at which the heating water enters a system component such as a heating circuit.
Weather-compensated operation
See “Heating operation”
Time program
In the time programs you determine what your heating system should do at what time.
Operating status
The operating status indicates how a component of your heating system is being operated.
For example, the operating statuses for DHW heating have different temperature levels.
The times for the operating status changeover are defined when the time program is set.
Lighting and Operating Instructions
FOR YOUR SAFETY READ BEFORE OPERATING
WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

A. This boiler does not have a pilot. It is equipped with an ignition device which automatically lights the burner. Do Not try to light the burner by hand.
B. BEFORE OPERATING smell all around the boiler area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS

Do not try to light any boiler.
Do not touch any electric switch; do not use any phone in your building.
Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
If you cannot reach your gas supplier, call the fire department.

C. Use only your hand to push the main gas supply switch. Never use tools. If the main gas supply switch will operate by hand, don’t try to repair it, call a qualified service technician.
Force or attempted repair may result in a fire or explosion.
D. Do not use this boiler if any part has been under water. Immediately call a qualified service technician to inspect the boiler and to replace any part of the control system and any gas control which has been under water.
OPERATING INSTRUCTIONS

STOP! Read the safety information above.
Set thermostat or other operating control to lowest setting.
Turn off all electric power to the boiler.
This boiler is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand.
Close main gas shut-off valve.
Wait five (5) minutes to clear out any gas.
Then smell for gas, including near the floor.
If you smell gas, STOP! Follow “B” in the safety information above. If you don’t smell gas, go to the next step.
Open main gas shut-off valve.
Turn on all electric power to the boiler.
Set thermostat or other operating control to desired setting.
If the boiler will not operate, follow the instructions “To Turn Off Gas To Boiler” and call your service technician or gas supplier.

TO TURN OFF GAS TO BOILER

Set thermostat or other operating control to lowest setting.
Turn off all electric power to the boiler if service is to be performed.
Turn off the control gas switch.

VIESSMANN VITODENS 100-W Wall Mounted Gas Fired -
parts8 Scan for digital copy of this document

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Viessmann Manufacturing Company Inc.
750 McMurray Road
Waterloo, Ontario
N2V 2G5
Canada
Techinfo Line 1-888-484-8643
1-800-387-7373
Fax 519-885-0887
www.viessmann.ca
info@viessmann.ca| Viessmann Manufacturing Company (U.S.) Inc.
45 Access Road
Warwick, Rhode Island
02886
USA
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Fax 401-732-0590
www.viessmann-us.com
info@viessmann-us.com
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**** Printed on environmentally friendly
(recycled and recyclable) paper.
Vitodens 100-W B1HE/B1KE Operating