Viessmann VITODENS 200-W B2HE 85 User manual

Please file in Service Binder
6167 814 - 01 03/2021
Operating Instructions
VITODENS 200-W
for the system user
Read and save these instructions
for future reference.
Product may not be exactly as shown
IMPORTANT
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.
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.
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.
WARNING
Vitodens 200-W, B2HE
Models 85 to 199
Wall mounted gas-fired condensing boiler with 7 inch color touchscreen display
For operation with natural gas or liquid propane gas
Heating Input: 8.5 to 199 MBH
2.5 to 58.3 kW
H

Vitodens 200-W B2HE Operating
6167 814 - 01
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).
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.
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.
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.
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.
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.
2

Table of Contents
3
Page
Vitodens 200-W B2HE Operating
6167 814 - 01
Safety
General Information
Operation
Default Displays
Time Programs
Central Heating
Safety, Installation and Warranty Requirements............. 2
About these Instructions.............................................5
For your Safety ......................................................... 5
Operation ............................................................. 5
Working on the equipment...................................... 5
Maintenance and cleaning....................................... 5
Flue gas smell ....................................................... 5
Dangerous conditions............................................. 5
Technical Information............................................. 5
Carbon monoxide .................................................. 6
For safe operation.................................................. 6
Frozen water pipe hazard........................................ 7
Replacement components, spare and wear parts........ 7
Installation area conditions...................................... 7
Sources of combustion and ventilation air ..............
contaminants ........................................................ 7
Intended Use ............................................................ 8
Product Information................................................... 8
Software Licences..................................................... 9
Commissioning ........................................................ 9
Your System is Preset................................................ 9
Energy Saving Tips...................................................10
Tips for Greater Comfort ......................................... 10
Operating Principles................................................ 11
Screen Displays ..................................................... 11
Buttons and Symbols.............................................. 12
Overview of the “Main menu”....................................13
Operating Program ...................................................14
“Heating Circuit” or “Continuous Operation”
Default Display ........................................................15
“DHW” Default Display .............................................15
“Dashboard” Default Display......................................16
“Operating Status Default Display ..............................16
Calling Up Operating Data for the Solar
Thermal System .......................................................17
StartingOne-Off DHW Heating ...................................17
Calling Up Operating Data for the Boiler ......................17
Procedure for Setting a Time Program.........................18
Heating Circuit Selection ...........................................20
Setting the Room Temperature for a Heating Circuit .....20
Switching Central Heating On or Off
(Operating program) .................................................20
Setting the Target Supply Temperature for a
Heating Zone ...........................................................21
Setting the Heating Curve .........................................21
Temporarily Adjusting the Room Temperature for
Certain Heating Circuits ............................................21
Adjusting the Room Temperature for Longer Periods
at Home..................................................................22
Saving Energy During Longer Absences.......................23
Checking the Boiler Status and the Status of
Heating Zones .........................................................23

Table of Contents
4
Page
Vitodens 200-W B2HE Operating
6167 814 - 01
DHW Heating
Additional Adjustments
Calling Up Information
Emissions Test Mode
Switching the System On and Off
What to do if...
Maintenance
Appendix
Setting the DHW Temperature ...................................24
Switching DHW Heating On or Off (Operating program) .24
One-Off DHW Heating Outside the Time Program .........24
Increased DHW Hygiene............................................25
Switching DHW Scald Protection On/Off .....................25
Locking the Controls.................................................26
Setting the Display Brightness....................................26
Switching the Lightguide On and Off ..........................27
Lead Cascade Boiler Only: Switching On the Display ..... 27
Audio Signal When Buttons are Pushed.......................27
Entering Names for Heating Circuits............................27
Entering a Name for the Heating Zone ....................... 28
Setting the “Time” and “Date” ................................. 28
Automatic “Summertime/Wintertime” Changeover....... 28
Setting the “Language”........................................... 28
Setting “Units” ........................................................28
Entering the Contractor’s Contact Details ....................29
Setting the Home Screen...........................................29
Changing the Colorific Value or Correction Factor .......29
Switching Internet Access On or Off .........................29
Switching Off the Display Screen for Cleaning .............31
Lead Cascade Boiler Only: Dynamic Control Strategy...31
Restoring Factory Settings.........................................31
Calling Up Help Messages .........................................32
Checking Information................................................32
Displaying the Gas Consumption ................................32
Calling Up Licences for the Programming Unit ..............32
Calling Up Licences for the Integrated Module..............33
Checking Maintenance Messages ...............................33
Checking Fault Messages ..........................................34
Checking Message Lists ............................................35
Emissions Test Mode ................................................35
Switching the System Off .........................................36
Switching the System On..........................................36
Rooms are too Cold .................................................37
Rooms are too Hot ..................................................37
There is no Hot Water ..............................................38
The DHW is too Hot.................................................38
Cleaning..................................................................39
Inspection and Maintenance ......................................39
Overview of “Main menu” .........................................40
Terminology ............................................................44

5
6167 814 - 01
Vitodens 200-W B2HE Operating Safety
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.

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.
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.
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 200-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 200-W
- Technical Data Manual
- Installation Instructions
- Service Instructions
- Operating Instructions
Additional applicable literature:
- Accessory manuals

Vitodens 200-W B2HE Operating
6167 814 - 01
6
For your Safety (continued)
Safety
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.
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.
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
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.
WARNING
Do Not operate the boiler without the cover in place.

7
6167 814 - 01
Vitodens 200-W B2HE Operating
For your Safety (continued)
Safety
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
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.
IMPORTANT
Installation area conditions
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
WARNING
Incorrect ambient conditions can lead to damage to
the heating system and put safe operation at risk.
WARNING
Fire causes a risk of burns and explosion!
j Shut down the boiler
j Close fuel shut-off valves
j Use a tested fire extinguisher, class ABC.
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.

Vitodens 200-W B2HE Operating
6167 814 - 01
8
Intended Use
General Information
Product Information
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).
The temperature shown on the display is the target room
temperature.
In weather-compensated operation, the supply
temperature level 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.
In weather-compensated operation, 1 heating circuit
without mixing valve and up to 3 heating circuits with
mixing valve can be operated with the control unit.
The temperature shown on the display is the boiler water
temperature.
In constant operation the boiler provides heating water
with a constant supply temperature regardless of the
outside temperature.
In constant operation, 1 heating circuit without mixing
valve and up to 3 heating circuits with mixing valve can
be operated with the control unit.
Operation
The control unit is integrated into the boiler and controls
all functions of your system. The control unit is operated
via a 7 inch color touchscreen.
A WiFi module is integrated into the control unit.
This means the system can also be operated remotely
via the internet and the “ViCare” app.
In weather-compensated operation, you can set some
functions using a remote control.
The control unit is a boiler and heating circuit control
unit for the following operating modes:
Weather-compensated operation
Constant (continuous) operation
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.
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
Constant operation

9
6167 814 - 01
Vitodens 200-W B2HE Operating
Software Licences
General Information
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 33.
Licences for the programming unit: See page 32.
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
DHW heating
Between 05:30 and 22:00, the DHW is heated to
122°F (50°C) “Set DHW temperature”. Any installed
DHW recirculation pump is switched on.
Between 22:00 and 05:30, the DHW tank is not
reheated. Any installed DHW recirculation pump is
switched off.
Note: Any DHW heating started before 22:00 remains
on until the target DHW temperature has been
reached.
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.
Your heating system is preset at the factory and is
therefore ready for operation following commissioning
by your contractor:
Note: The switching times and target temperatures are
not valid for operation with a DHW tank with
temperature switch (such as an Aquastat).
Central heating in weather-compensated operation
Between 06:00 h and 22:00, rooms are heated to
68°F (20°C) “Room set temperature” (standard room
temperature).
Between 22:00 h and 06:00, rooms are heated to
37°F (3°C) “Set reduced room temperature” (reduced
room temperature, frost protection).
Central heating in constant operation
Between 06:00 h and 22:00, the target supply
temperature is 140°F (60°C) (“Set flow temperature
standard”)
Between 22:00 h and 06:00 the target supply
temperature is 122°F (50°C) (“Set flow temperature
reduced”, frost protection)

Vitodens 200-W B2HE Operating
6167 814 - 01
10
Energy Saving Tips
General Information
Tips for Greater Comfort
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 18.
Switch on DHW recirculation only for those times in
which you regularly use hot water. To do so, adjust
the time program for DHW recirculation pump:
See page 18.
For additional energy saving functions, please contact
your contractor.
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 and room
temperature-dependent operation:
Do not set your standard room temperature (“Room
set temperature”) to above 68°F (20°C): See page 20.
Heat your home to the reduced temperature at night
or during regular absences:
– Weather-compensated operation:
Reduced room temperature
– Constant operation
Reduced supply temperature
For this, adjust the settings in the time program for
central heating (“Time program, heating”): See page 18.
To switch off functions that are not required (e.g.
central heating in summer), set the operating program
to “Standby mode” for the relevant heating circuits:
See page 20.
If you are going away, select the “Holiday program”.
During the period that you are away, the room
temperature will be reduced and DHW heating
switched off.
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 automatically
reached when you are present: See page 18.
Only for weather-compensated operation:
Adjust the heating curves so that your home is heated
to your individual preferred temperature all year round:
See page 21.
If you need a higher room temperature in the short term,
select the “Extended heating” function: See page 21.
Example: Late in the evening, the reduced room
temperature is set by the time program. Your guests
stay longer.
Only for weather-compensated operation:
If you are spending more time than usual at home,
select the “Holidays at home” function: See page 22.
E.g. for public holidays or when the children are on
school holidays.
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 18.
Example: You need more DHW in the morning than
in the daytime.
Adjust the time program for the DHW recirculation
pump so that hot water is available from the hot taps
immediately during times of more frequent usage:
See page 18.
If you need a higher DHW temperature for a short
while, select “One-off DHW heating outside the time
program”: See page 24.

11
6167 814 - 01
Vitodens 200-W B2HE Operating
Operating Principles
Operation
Screen Displays
Touchscreen
You can adjust any setting on your system centrally at
the control unit.
The control unit is equipped with a touchscreen. For
settings and to call up information, tap the on-screen
buttons.
Remote control for weather-compensated operation
If remote control units are installed in your rooms, you
can also adjust the settings at the remote control units.
Remote control operating instructions
Status display with Lightguide
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.
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 27.
Home screen
The default displays provide access to the most important
settings and checks.
Use to choose between the following displays:
Heating circuit or Continuous operation
DHW
Dashboard
Cascade status (if available)
For further information regarding the default displays:
See page 12 onwards.
After starting or activating the control unit the home
screen is shown.
With the factory settings, the “Heating circuit” or
“Continuous operation” display is shown as the home
screen. The display depends on the operating mode
(weather-compensated operation, constant (continuous)
operation). You can specify a different display for the
home screen:
Call up the home screen as follows:
Standby display active:
Tap anywhere on the screen.
From the “Main menu”:
Tap
.
Note: You can prevent operation of the home screen:
See page 26.
If you do so, you will not be able to make adjustments
on either the home screen or the main menu.
“Panel locked” is displayed.
Standby display
If the controls have not been operated for some time,
the display initially switches to the standby display.
After a few minutes, the illumination is switched off.

Vitodens 200-W B2HE Operating
6167 814 - 01
12
Operation
Buttons and Symbols
Buttons and symbols in menu bar A
Calls up the “Main menu”.
“Heating circuit ...” Selects the heating circuit.
Note: This choice is only available
if there are several heating
circuits in your system.
System data:
Date
Time
Interfaces:
No data transfer
No WiFi connection
Establishing a connection
Communication error
WiFi connection is active (very low reception quality).
WiFi connection is active (low reception quality).
WiFi connection is active (medium reception quality).
WiFi connection is active (high reception quality).
Buttons and symbols in function area B
For buttons in the default displays: See page 13 onwards.
Note: What buttons and symbols are available depends
on the operating mode: Weather-compensated
operation or constant operation.
These symbols are not always displayed, but
appear subject to the system version and the
operating status.
Buttons and symbols in navigation area C
Note: The buttons and symbols available depend on the
operating mode: Weather-compensated operation
or constant operation
Takes you back to the home screen.
Takes you one step back in the menu.
or
Terminates an adjustment in progress.
WiFi is switched off: See page 30.
Confirms a change.
Makes changes in the menu.
Calls up the help text.
Calls up messages.
Scrolling through the menu.
or
Switches to other display areas, e.g. to “DHW”.
Note: If “DEMO” is displayed in the navigation area,
there is no central heating, no DHW heating and no
frost protection.
Legend
AMenu line
BFunction area
CNavigation area
Symbols
Frost protection is active.
Central heating with reduced room temperature in
weather-compensated operation
Central heating with supply temperature in constant
operation
Central heating with standard room temperature in
weather-compensated operation
Central heating with standard supply temperature
in constant operation
Central heating with comfort room temperature in
weather-compensated operation
Central heating with comfort supply temperature in
constant operation
Holiday program is switched on.
Holidays at home is switched on.

13
6167 814 - 01
Vitodens 200-W B2HE Operating Operation
Overview of the “Main menu”
In the “Main menu”, you can check and adjust all of
the settings for the control unit’s range of functions.
Call up the “Main menu” as follows:
If the screensaver is active:
Tap anywhere on the screen and then tap .
From the home screen:
Tap .
From anywhere in the menu:
Tap
and then .
Menus available in the “Main menu”
Note: What buttons and symbols are available depends
on the operating mode: Weather-compensated
operation or constant operation.
“Heating”
For more central heating settings, e.g. target
temperature values.
Further information: See page 15.
“Test mode”
For contractors only
Further information: See page 35.
“DHW”
For DHW heating settings, e.g. for the “DHW
temperature”.
Further information: See page 15.
“Settings”
For example the display setting
Further information: See page 26.
“Information”
For checking operating data
Further information: See page 32.
“Holiday program”
Energy saving function “Holiday program”
Further information: See page 23.
“Holidays at home”
“Holidays at home” function
Further information: See page 22.
“Message lists”
Calls up all pending messages
For further details regarding messages:
See page 35.
“Service”
For contractors only
You can find the menu overview on page 33.

Vitodens 200-W B2HE Operating
6167 814 - 01
14
Operating Program
Operation
Operating programs for central heating and DHW heating
Note: The operating programs for central heating and
DHW heating can be set separately.
Symbol Operating program Function
Central heating
“Heating” The rooms of the selected heating circuit are heated in accordance with the specified
room temperature or supply temperature and the time program
(see chapter “Room heating”).
Note: In room temperature-dependent operation, a time program for central heating
can only be set at the room temperature controller: See the operating
instructions for the room temperature controller.
“Standby mode” No central heating
Frost protection for the boiler is active.
DHW heating
Note: Not valid for systems with a DHW tank with temperature switch (such as an Aquastat).
“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.
“External hook-up”
The operating program set at the control unit was
changed over by an external device, e.g. an EM-EA1
extension (DIO electronics module). The operating
program cannot be changed via the control unit for
as long as the external hook-up is active.
“Holiday program”: See page 23.
“Holidays at home”: See page 22.
Note: The special operating programs and functions are
displayed alternately with the room temperature or
the supply temperature of the boiler.
In the main menu, you can call up the set operating
program under “Information”: See page 32.

15
6167 814 - 01
Vitodens 200-W B2HE Operating Default Displays
“Heating Circuit” or “Continuous Operation” Default Display
Sets the “Heating” operating program for a heating circuit.
To select “Standby mode”.
To switch the “Extended heating” function on or off.
To call up the “Time program, heating” for central heating.
The temperature display represents the selected target
room temperature [e.g. 68°F (20°C)] or target supply
temperature [e.g. 140°F ( 60°C)] for the current time
phase.
“DHW” Default Display
In the “Heating circuit” or “Continuous operation”
default display, you can adjust and check the most
frequently used settings:
Raises the room temperature value in weather-
compensated operation.
Raises the supply temperature value in constant operation.
Lowers the room temperature value in weather-
compensated operation.
Lowers the supply temperature value in constant operation.
Note: The DHW default display is not available for systems
with a storage tank with temperature switch (such as
an Aquastat).
In the “DHW” default display you can carry out the
settings and checks you use most frequently:
Raises the DHW temperature value.
Lowers the DHW temperature value.
Turns “DHW” “ON”/”DHW” “OFF”.
Calls up the “Time program, DHW”.
To switch one-off DHW heating on or off.

Vitodens 200-W B2HE Operating
6167 814 - 01
16
Default Displays
“Dashboard” Default Display
“Operating Status” Default Display
The various components present in the system are shown
as graphics. Some information on the components is also
provided in the default display. For more information, tap
the relevant component.
What buttons and symbols are available depends on the
system version.
Legend
AOperating program
BCurrent supply temperature
CSolar collectors active
Holiday program active
Current outside temperature
Burner status
DBurner symbol
ECurrent modulation level
FSolar yield (if active)
GSolar storage tank (if installed)
H Target supply temperature
“Dashboard” default display for cascade control
This display shows the lead boiler in the cascade,
its current supply temperature, the target supply
temperature and the modulation level.
Note: All information in this display relates to the lead
boiler in the cascade system.
This display shows the participants in the cascade as
well as the current supply temperature and the target
supply temperature.
Legend
ADynamic control strategy
BAll cascade participants can be called up (status,
burner run hours)
CSwitch on all displays of the cascade participants
(deactivated by standby)
Legend
ATarget supply temperature
BModulation level
CCurrent temperature
DIdentification number of the lead or lag boiler.
This display shows the lead boiler in the cascade, it’s
current supply temperature, the target temperature,
the modulation level and the identification number.

17
6167 814 - 01
Vitodens 200-W B2HE Operating Default Displays
Calling Up Operating Data for the Solar Thermal System
Calling up the solar energy yield
You can call up the amount of energy generated by your
solar thermal system. Values are shown in kilowatt hours.
Tap the following buttons:
1.
2. “Information”
3. “Solar”
4. “Solar energy bar chart”
5. Required period :
Current month
Last month
Current year
Last year
The solar energy yield is displayed as a diagram with
yellow bars.
6. Required period in diagram: Day of the week or month.
The solar energy yield for the selected period is
displayed numerically.
Starting One-Off DHW Heating
Calling Up Operating Data for the Boiler
You can call up the following operating data:
Solar energy yield (Solar energy bar chart):
See the following chapter
Total solar energy generated
Solar circuit pump operating time
Solar circuit pump operating state
Reheating suppression
Solar stagnation
Solar circulation pump
TS3: Buffer temperature
TS4: Return temperature, heating circuit
Solar central heating backup
TS3: DHW preheating
Tap the following buttons:
1.
2. “Information”
3. “Solar”
Note: Not valid for systems with a DHW tank with
temperature switch (such as an Aquastat).
Tap the following buttons:
1. If applicable , for the “DHW” default display
2. to start one-off DHW heating by the boiler.
The DHW tank is heated to the selected target DHW
temperature.
If you want to terminate DHW heating early, tap
again.
3. to confirm
You can call up the following operating data:
Current output
Hours run
Burner runtime
Burner starts
And further data
Tap the following buttons:
1.
2. “Information”
3. Select group
4. Retrieve data

Vitodens 200-W B2HE Operating
6167 814 - 01
18
Time Programs
Procedure for Setting a Time Program
Time programs and time phases
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.
The procedure is explained using the example of central
heating for heating circuit 1 in weather-compensated
operation.
You can set up to 4 time phases in each “Time program”.
For each time phase, you define the start point “Start”
and the end point “End”.
You can set up a time program for the following functions:
Function Temperature level
Within the time phase Outside the time phase
Central heating Weather-compensated operation:
Your rooms are heated to standard
room temperature or comfort room
temperature.
Your rooms are heated to reduced
room temperature.
Constant operation:
Your rooms are heated with standard
supply temperature or comfort supply
temperature.
Your rooms are heated with
reduced supply temperature.
DHW heating
Note: Not valid for systems with a
DHW tank with temperature switch
(such as an Aquastat).
DHW heating is switched on.
The water in the DHW tank is heated
to the target DHW temperature.
DHW heating is switched off.
DHW recirculation pump The DHW recirculation pump is
switched on.
The DHW recirculation pump is
switched off.
The time programs can be set individually to be the
same, or different, for every day of the week.
In the main menu, you can check the time programs
under “Information”: See page 32 onwards.
The bars in the time diagram are adjusted.
Example:
“Time program” for “Monday” for “Heating circuit 1”
Time phase 1:
06:30 to 12:00 with standard room temperature
Time phase 2:
15:00 to 20:00 with comfort room temperature
In between these time phases the system heats to
a reduced temperature.
Tap the following buttons:
1. “Heating circuit 1 “ in the menu bar
2.
3. “Mo”
4.
5. for the “Start” and “End” of time phase 1.
The bar in the time diagram is adjusted.
6. “ Standard” to select standard room temperature.
7. to add time phase 2.
8. for the “Start” and “End” of time phase 2.
9. “Comfort” to select comfort room temperature.
10. to confirm
11. to exit the “Time program”.
Setting time phases
Note: DHW is not heated between the time phases.
Frost protection for the DHW tank is active.
When setting time programs, bear in mind that
your system needs some time to heat the DHW
tank to the required temperature.
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.

19
6167 814 - 01
Vitodens 200-W B2HE Operating Time Programs
Procedure for Setting a Time Program (continued)
Changing time phases
The procedure is explained using the example of central
heating for heating circuit 1 in weather-compensated
operation.
Example:
For “Monday”, you want to change the start point
“Start” of time phase 2 to 19:00.
Tap the following buttons:
1. “Heating circuit 1 “ in the menu bar
2.
3. “Mo”
4.
5. for time phase 2
6. for the start point of time phase 2.
The bar in the time diagram is adjusted.
7. “Standard” for standard room temperature
or
“Comfort” for comfort room temperature
8. to confirm
9. to quit the time program.
Deleting time phases
The procedure is explained using the example of central
heating for heating circuit 1 in weather-compensated
operation.
Example:
For Monday you want to delete time phase 2.
Tap the following buttons:
1. “Heating circuit 1 “ in the menu bar
2.
3. “Mo” to select the required day
4.
5. for time phase 2
6. X to delete the time phase.
7. to confirm
8. to quit the time program.
Copying the time program to other days of the week
The procedure is explained using the example of central
heating for heating circuit 1 in weather-compensated
operation.
Example:
You want to copy the “Monday” “Time program” over
to “Thursday” and “Friday”.
Tap the following buttons:
1. “Heating circuit 1 “ in the menu bar
2.
3. “Mo”
4.
5. “Th”, “Fr”
6. to confirm
7. to quit the time program.

Vitodens 200-W B2HE Operating
6167 814 - 01
20
Central Heating
Heating Circuit Selection
Setting the Room Temperature for a Heating Circuit
Switching Central Heating On or Off (Operating Program)
The heating of your rooms can be split over several
heating circuits if necessary.
E.g., one heating circuit for your home, and one heating
circuit for your office.
In the menu bar, the heating circuits are designated at
the factory as “Heating circuit 1”, “Heating circuit 2”
etc. If names have been given to the heating circuits,
the allocated name is shown: See chapter “Entering
names for heating circuits”.
For all central heating settings for heating systems
with several heating circuits, first select the heating
circuit that you want to change from the “Heating
circuit” default display.
If you are only operating one heating circuit, this
option is not available.
Tap the following buttons:
1. If applicable, for the “Heating circuit” default display
2. “Heating circuit 1 “ in the menu bar
3. Required heating circuit
Factory settings for the temperature levels
Weather-compensated operation:
Standard room temperature: 68°F (20°C)
Reduced room temperature: 37°F (3°C)
Comfort room temperature: 68°F (20°C)
Constant operation and room temperature-dependent
operation:
Standard supply temperature: 140°F (60°C)
Reduced supply temperature: 68°F (20°C)
Comfort supply temperature: 158°F (70°C)
Setting temperature levels for central heating
Tap the following buttons:
1. If applicable, for the “Heating circuit” or
“Continuous operation” default display
2. If applicable, in the menu bar for the relevant
heating circuit
3. for the required value of the relevant temperature
level:
“Reduced”
“Standard”
“Comfort”
4. to confirm
For information on the operating programs, see page 14.
Tap the following buttons:
1.
2. “Turn on/off”
3. Tap the required heating circuit or heating zone to
switch it on or off.
4. to confirm