Viessmann Vitodens 100-W Guide

Operating Instructions &
User’s Information Manual
VITODENS

100-W
5600 333 v1.2 09/2013
Vitodens 100-W
WB1B Series
Wall-Mounted, gas-fired condensing boiler
with optional on demand hot water CombiPLUS Kit
Read and save these instructions
for future reference.
IMPORTANT
Please file in Service Binder
Heating input: 37 to 118 MBH
10.8 to 34.5 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.
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.
Do not store or use gasoline or other
flammable liquids in the vicinity of this
or any other appliance.
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliances.
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.
H

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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).
Safety, Installation and Warranty Requirements
WARNING
Installers must follow local regulations with respect
to installation of carbon monoxide detectors. Follow
manufacturer’s maintenance schedule of the boiler
contained in “Service Instructions” 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 “Combustion Air Supply”.
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 instructions supplied with
burner.
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
“Combustion Air Supply”.
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.

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Vitodens 100-W, WB1B Operating & User’s Information Table of Contents
About these Instructions.............................................4
For your Safety..........................................................4
Operation...............................................................4
Flue gas smell.........................................................4
Working on the equipment.......................................4
Dangerous conditions..............................................4
Maintenance and cleaning........................................4
Technical Information..............................................4
Carbon monoxide....................................................5
For safe operation...................................................5
Frozen water pipe hazard.........................................6
Installation area conditions.......................................7
Overview of Controls and Indicators.............................8
Control and display elements....................................8
Your Vitodens 100 Boiler.............................................9
Changing Room Temperature.......................................9
Heating System Operation.........................................10
Switching ON......................................................10
Switching OFF...................................................10
Domestic Hot Water..................................................11
With CombiPLUS kit only..................................11
Comfort Function......................................................12
Starting the comfort function..................................12
Stoping the comfort function..................................12
Heating Water Temperature and System Pressure.........12
Switching OFF Vitodens with Frost Protection.............13
Shutting Down the Heating System............................13
Fault Diagnosis and Correction...................................14
Fault Messages on the Display...................................15
Service Instructions for your Heating System...............15
How to Save Energy.................................................16
Lighting and Operating Instructions.............................17
General Information
Safety
Start-up
Operation
Information
Page

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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
CAUTION
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.
General Information/Safety
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.
Flue gas smell
- Deactivate heating equipment.
- Open windows and doors.
- Inform your heating contractor immediately.
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 have been deactivated. Close main gas
supply valve. Take precautions in all instances to avoid
accidental activation of power during service work.
Dangerous conditions
- Deactivate main power immediately.
- Close gas supply valve.
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.
Technical information
- Technical Data Manual
- Installation and Service Instructions
- Operating Instructions and User’s Information Manual
- Vitodens Venting System Installation Instructions
-Quick Start-up Guide
- Instructions of other products utilized and installed
- Installation codes mentioned in this manual
WARNING
Indicates an imminently hazardous situation which,
if not avoided, could result in death, serious injury
or substantial product/property damage.
Indicates an imminently hazardous situation which,
if not avoided, may result in minor injury or product/
property damage.

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For your Safety (continued)
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.
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.
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 2034-2002, CSA 6.19-01) 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
death. A qualified heating contractor must remove
the blockage from blocked or partially blocked
chimneys.
- 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 per year. Maintenance, service
and cleaning are specified in the Installation and
Service 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.
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.
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 appliance.
CAUTION

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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.

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For your Safety (continued)
Ensure ambient temperatures are higher than 32° F
(0° C) and lower than 104° F (40° 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 to the right
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
Safety
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 carried
out by a qualified heating contractor.
IMPORTANT
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!

Shut down the boiler

Close fuel shut-off valves

Use a tested fire extinguisher,
class ABC.
WARNING
If you notice fire coming from the appliance, call
the fire department immediately! Do not attempt to
extinguish the fire unless qualified to do so.
Installation area conditions

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Vitodens 100-W, WB1B Operating & User’s Information
Overview of Controls and Indicators
Start-up
Legend
APressure gage
BLCD display
C“ ” Water temperature, rotary selector
(when used with optional CombiPLUS kit only)
D“tr” Selector dial for boiler water temp.
EON / OFF switch
FGas shut-off valve
Control and display elements
The control unit is preset at the factory for standard
operation. Your heating system is ready for use. The
factory presets may be individually adjusted to suit your
specific requirements.
Legend
AHeating mode pump output on
BPump output on (when DHW contact is closed or
when the optional CombiPLUS kit is used))
CBoiler water temperature in °F or fault code
DUnits for boiler water temperature measurement
EService mode
FCurrent burner firing rate
GBurner in operation
HFault
IComfort function started
JComfort function stopped
Controls and indicators are located behind the hinged
front cover. Flip up the front cover to access the controls.

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Vitodens 100-W, WB1B Operating & User’s Information Start-up/Operation
Changing Room Temperature
In case a separate external room temperature controller
(thermostat) is installed, the desired room temperature will
be adjusted using this device.
Make adjustments using the appropriate operating
instructions only.
Note: lf thermostatic radiator valves are installed in the
room where the control is installed they must be
fully open.
In case the room temperature setting on the
separate room temperature controller is not
sufficient to achieve the desired room temperature
(e.g. during a particularly cold winter), the boiler
water temperature can be adjusted accordingly
using the boiler water temperature selector dial
“tr”.
Your Vitodens 100 Boiler
Vitodens 100 without domestic hot water tank
The control unit activates and deactivates space
heating and supplies rooms with heat.
Vitodens 100 with separate domestic hot water tank
Domestic hot water heating has priority over space
heating. The control unit switches automatically
to space heating when the preset domestic hot water
temperature is reached.
Vitodens 100 with optional CombiPLUS for
instantaneous DHW heating
Domestic hot water heating has priority over space
heating. The control unit switches automatically to
space heating when the heat exchanger temperature
is satisfied (with comfort switch on) or when the
preset domestic hot water temperature is reached
(with comfort switch off).
Please ask your heating contractor to check off the
appropriate box ().

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5600 333 v1.2
Vitodens 100-W, WB1B Operating & User’s Information
Legend
ASelector dial “tr” setting: 1
BSelector dial “tr” setting: 2
CSelector dial “tr” setting: 3
DSelector dial “tr” setting: 4
EFactory default
FSelector dial “tr” setting: 5
GSelector dial “tr” setting: 6
Outside temperature
Boiler water or supply temperature
Factory default
Heating System Operation
Switching ON
Room dependent control:
Outdoor temperature sensor not connected
With no outdoor sensor installed, the “tr” dial will
provide a constant temperature set-point for the boiler
based on the dial position selected.
Setting the dial between 1 and 6 will provide a set-point
value of 81º F to 178º F (27º C to 81º C) respectively.
The dot between 4 and 5 represents the factory default
set-point value of 140º F (60º C).
Weather dependent control
Outdoor temperature sensor connected
With the outdoor sensor connected, the boiler will
automatically recognize the sensor and switch the set-
point dial operation from constant temperature calculated
to outdoor reset calculated.
Adjusting the “tr” dial will select the heating curve
corresponding with the heating curve chart. The set-
point will be calculated from the design boiler water
temperature associated with the heating curve selected,
and reset from the actual outdoor air temperature. Setting
the dial between 1 and 6 will select the corresponding
curve from the chart. The dot between 4 and 5 is the
factory default curve.
The display “tr” indicates when a heat request has
been made.
Note: Both the room dependent control and the outdoor
reset control strategies require a closed contact at
terminals RT to generate a call for heat to the
boiler.
Setting the dial to “0” places the boiler in freeze
protection mode regardless of the control option
selected or the contact position at RT.
Switching OFF
Turn the selector dial “tr” to “0”.
Note: If an external OpenTherm device is connected that
controls the boiler water temperature, it can no
longer be adjusted using the selector dial “tr”
Operation

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Vitodens 100-W, WB1B Operating & User’s Information Operation
Domestic Hot Water
When in operation with a separate Domestic Hot Water
(DHW) tank, the domestic hot water temperature is
adjusted at the temperature control of the DHW tank.
When heating a domestic hot water tank, external heat
demand or used with the CombiPLUS kit, the display
shows “”.
The boiler water temperature is automatically adjusted to
satisfy the DHW demand.
Select the DHW temperature in accordance with your
requirements (e.g. for showering).
With CombiPLUS kit only
Switching ON
Move rotary selector “ “ to the required DHW
temperature.
If DHW heating is active, the indicator “ “ appears
on the display.
Switching OFF
Turn rotary selector “ “ to “0”.
Note: If the boiler is not used with the CombiPLUS kit,
turn the rotary selector “ “ to “0”.
The scalding label is placed on the front of the boiler.
When used with the CombiPLUS, the numbers represent
an approximate temperature setting of:
0 No DHW
1 95º F (35º C)
2 105º F (40º C)
3 110º F (43º C)
4 120º F (49º C)
5 125º F (52º C)
6 135º F to 140º F (57º C to 60º C)
Note: This label must be installed as required by
national code.

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Vitodens 100-W, WB1B Operating & User’s Information
Operation
Comfort Function
Checking the boiler heating water temperature
During operation, the heating water temperature is
constantly displayed.
Checking the system pressure
Check the pressure of your heating system on the
pressure gage. Minimum system pressure must
be 0.8 bar (12 psi).
Notify your heating contractor if the pressure of the
system is too low.
Heating Water Temperature and System Pressure
If the comfort function is switched ON (when used with the DHW CombiPLUS Kit only), the instantaneous water heater
is kept up to temperature (standby). Hot water is therefore quickly available.
Starting the comfort function
Briefly turn selector “ “ clockwise as far as possible,
wait for SERV to appear momentarily (for less than 3 sec.)
then turn it counter clockwise again.“COMFORT” appears
on the display.
Stopping the comfort function
Briefly turn the rotary selector “ “ counter clockwise
as far as possible, wait for SERV to appear momentarily
(for less than 3 sec.) then turn it clockwise again. “ECO”
appears on the display.

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Vitodens 100-W, WB1B Operating & User’s Information
IMPORTANT
Shutting Down the Heating System
Switch OFF the equipment if you do not wish to use your
heating system for a few days.
Turn selector dial ”tr” to “0”.
Boiler frost protection is active.
Frost protection
Frost protection is continuously active. The burner is
switched ON when the boiler water temperature reaches
41° F (5° C) and is switched OFF again when the boiler
water temperature reaches at least 59° F (15° C) but not
more than 68° F (20° C).
Shut down your heating system completely, if it is not
needed for longer periods of time (several months).
Before you switch your heating system OFF for longer
periods, it is advisable to contact your local heating
contractor. Your heating professional will take any
necessary measures, e.g. for freeze protection of the
system or to protect the heat emitter surfaces, e.g.
radiators etc.
1. Close gas shutoff valve and secure against
unintentional opening.
2. Switch OFF line voltage (e.g. at separate fuse/circuit
breaker).
The power supply to the system is now switched off.
At this point the boiler and the system are no longer
protected from freezing.
Switching OFF Vitodens with Frost Protection
Operation

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Vitodens 100-W, WB1B Operating & User’s Information
Operation
Fault Diagnosis and Correction
Issue Cause Corrective Action
Heating system does not start up Heating system switch turned to
OFF on control unit
Turn switch to ON on control unit.
Selector dial “tr” is set to “0”. Set required heating water temperature
(see page 10).
Circuit breaker or fuse in power
supply or in boiler control unit has
blown or tripped
Inform heating contractor.
Burner does not switch on or
only intermittently
No gas Open gas shut-off valve or contact your
gas supply company.
Fault on control unit Make a note of the fault code and inform
heating contractor.
Burner does not start up; burner
fault, “U” is displayed on control
unit
Faulty start-up Press ON / OFF switch to OFF position and
then back ON. This will reset the boiler
fault (see page 10). Should this attempt
fail, contact your heating contractor.
Fault on control unit
Burner does not start up, no fault
“U“ display. “r” and / or ”w“
on the display
No water flow Flow switch defective or boiler pump
failure. Inform heating contractor.
Burner does not start up; burner
fault “U” appears in display
Power supply too low Contact your Hydro company.
The burner switches off even
though the desired room
temperature has not been
reached
Fault in combustion air supply or in
the venting system
Contact your heating contractor.
Heating water temperature or room
temperature is set too low
Increase heating water temperature by
turning selector dial “tr” or by increasing
desired room temperature on the room
thermostat.
Air in heating system
Rooms are cold although burner
is operating
Domestic hot water supply has
priority (operation with DHW storage
tank only)
Wait until the domestic hot water heating
is complete.
Fault on programmable room
thermostat
Contact your heating contractor.
Circulation pump fault
Rooms are not at the required
temperature, even though the
temperature is operating
DHW priority
Circulation pump faulty
DHW temperature is too low DHW temperature is set too low or
rotary selector “ “ is set to “0”
(only with the CombiPLUS kit)
Fault code “58” appears on the
display
Jumper connection shorted out,
removed or missing
Contact your heating contractor.

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Service Instructions for Your Heating System
Operation
IMPORTANT
Viessmann strongly recommends inspection/service of the boiler and the system by a licensed professional heating
contractor once per year.
Before the heating season begins, the boiler with its burner(s) and vent system should be serviced by a qualified heating
contractor. Service contracts may be established through gas suppliers or other licensed contractors in your area.
Regular inspection/service ensures trouble free, energy-efficient and environmentally friendly heating activity
of your heating system.
Boiler
All boilers must be cleaned on a regular basis as debris
build-up will result in increased flue gas temperature,
and thus in increased energy consumption.
Notes on operation:
- Ensure boiler room and boiler are clean.
- Regularly check heating system pressure on the
pressure gage:, If the system operating pressure gage is
indicating a pressure of below 14 psig, the system
pressure is too low; in this case, please contact your
heating contractor.
Viessmann domestic hot water storage tank
Inspection and (if necessary) cleaning of the tank must
take place within 2 years of initial start-up and every 2
years thereafter.
Cleaning of the inside surfaces of the domestic hot water
storage tank, including domestic hot water connections,
may only be performed by a licensed professional heating
contractor.
Vitocell 100:
Viessmann recommends an annual inspection, and
replacement if required, of the consumable anode by
a licensed professional heating contractor.
The inspection can be carried out during regular operation
of the heating system; shut-down is not required.
The heating contractor measures the protective current
with an anode testing instrument.
Drinking water filter (if installed)
For hygienic reasons:
- replace filter element every 6 months on filters which
cannot be flushed back, and perform a visual
inspection every 2 months,
- flush back reversible flow filters every 2 months.
If a water treatment device (water softener) is installed in
the domestic cold water supply to the hot water storage
tank, ensure its proper working condition is checked
regularly by your heating contractor.
The same applies if a dirt trap or a water filter is installed
in the domestic cold water supply. Any of these devices
installed in the domestic cold water supply must be
flushed out and serviced on a regular basis.
Please follow the manufacturer’s instructions.
Fault Messages on the Display
Any faults in your heating system are indicated on the
display by a flashing fault symbol ” U”.
Read off the fault code in the display and report it to your
heating contractor. This helps the contractor to properly
prepare, and may result in lower service costs.
WARNING
Visually inspect the vent termination for any signs of
blockage. Under cold climate conditions [sustained
temperatures below 0° F (-18° C)] the vent termination
may be severely blocked by icicle and frost build-up.
The boiler control will automatically shut down the
boiler should air intake or vent be blocked. Remove
blockage if possible. Reset the boiler switch (ON / OFF
switch to OFF and then back to ON) (see page 10) and
the boiler should attempt to restart. If blockage is not
obvious and cannot be removed, contact a licensed
professional heating contractor.
Service Instructions for your Heating System

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Information
How to Save Energy
.... by heating the right way
Apart from taking advantage of the benefits of a modern
heating system, there is a lot you can do yourself to
achieve additional fuel savings.
For instance:
- Don’t overheat:
Aim at a room temperature of 68º F (20º C).
Every 2º F (1º C) less in room temperature will reduce
your heating bills by up to 6%.
- Close window shutters (if installed) at dusk.
- Operate thermostatic valves 2correctly.
- Don’t obstruct radiators 3and thermostatic valves 2.
- Make use of individual adjustment options of the
control unit 4(supplied by others);
e.g. “normal room temperature” alternating with
“reduced room temperature”.
- Set the domestic hot water temperature of the DHW
tank 5on the control unit of the tank or on external
controller.
- Control your consumption of hot water:
A shower generally consumes less energy than a bath.
... with regular maintenance
Regular maintenance check-ups of your heating system
6by a licensed professional heating contractor will
ensure energy savings and environmentally friendly
operation.
.... with effective insulation
If you wish to make use of additional energy-saving
measures, check the thermal insulation:
- of heating and domestic hot water pipes.
- of external walls and the roof.
- between heated and unheated rooms.
- of the windows.

17
5600 333 v1.2
Vitodens 100-W, WB1B Operating & User’s Information Information
Start-up and Maintenance
Start-up and Maintenance
FOR YOUR SAFETY READ BEFORE OPERATING
W A R N I N G: 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 appliance 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 appliance
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 appliance.
•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 in or turn the gas
control knob. Never use tools. If the knob will
not push in or turn 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 appliance if any part has been
under water. Immediately call a qualified
service technician to inspect the appliance
and to replace any part of the control system
and any gas control which has been under
water.
OPERATING INSTRUCTIONS
1. STOP! Read the safety information above on
this label.
2. Set thermostat or other operating control to
lowest setting.
3. Turn off all electric power to the appliance.
4. This appliance is equipped with an ignition
device which automatically lights the burner.
Do not try to light the burner by hand.
5. Close main gas shut-off valve.
6. 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 on this label. If you
don’t smell gas, go to the next step.
7. Open main gas shut-off valve.
8. Turn on all electric power to the appliance.
9. Set thermostat or other operating control to
desired setting.
10.If the appliance will not operate, follow the
instructions “To Turn Off Gas To Appliance”
and call your service technician or gas
supplier.
Manual gas shutoff
Closed
Open
TO TURN OFF GAS TO APPLIANCE
1. Set thermostat or other operating control to lowest setting.
2. Turn off all electric power to the appliance if service is to be performed.
3. Close main gas shut-off valve.
Lighting and Operating Instructions

18
5600 333 v1.2
Vitodens 100-W, WB1B Operating & User’s Information

19
5600 333 v1.2
Vitodens 100-W, WB1B Operating & User’s Information

5600 333 v1.2 Technical information subject to change without notice. Printed on environmenally friendly
(recycled and recyclable) paper.
Quick Reference
°C °F
-40 -40
-35 -31
-25 -13
-20 -4
-18 0
-16 +3
-14 +7
-12 +10
-10 +14
-9 +16
-8 +18
-7 +19
-6 +21
-5 +23
-4 +25
-3 +27
-2 +28
-1 +30
0 +32
+1 +34
+2 +36
+3 +37
+4 +39
+5 +41
+6 +43
+7 +45
+8 +46
+9 +48
+10 +50
+12 +54
+14 +57
+16 +61
+18 +64
+20 +68
+25 +77
+30 +86
+35 +95
+40 +104
+50 +122
+60 +140
+70 +158
+80 +176
+90 +194
+100 +212
+110 +230
Vitodens 100-W, WB1B Operating & User’s Information