Viessmann Vitotronic 100 HC1 Guide

VITOCONTROL-S, WB2B
Operating Instructions
and User’s Information Manual
Vitodens 200-W, WB2B Series
Multi-boiler system with control units for operation with a constant
temperature and weather-compensated cascade control unit
For operation with natural gas and liquid propane gas
Certified as a component part
of Viessmann boilers only
Vitotronic 1 , HC1
Vitocontrol-S, WB2B
Please file in Service Binder
5414 554 v1. 12/2 9

Safety, Installation and Warranty Requirements
2
Safety, Installation and Warranty Requirements
Please ensure that these instructions are read and understood before commencing installation. ailure 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 the manual subsections).
HLicensed professional heating
contractor
The installation, service, and
maintenance of this equipment must
be performed by a licensed
professional heating contractor.
"
Please see section
entitled “Important
Regulatory and
Installation
Requirements” in the
Installation Instructions.
HProduct 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
Installation Requirements”
in the Installation Instructions.
HAdvice 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, shut-down procedure,
and the need for professional service
annually before the heating season
begins.
HCarbon monoxide
Improper installation, 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, service and
maintenance of this
equipment to avoid
formation of carbon monoxide, please
see the Installation Instructions of the
Vitodens 00-W Direct Vent System.
HEquipment venting
Never operate boiler without an
installed venting system. An improper
venting system can cause carbon
monoxide poisoning.
HWarranty
Information contained in
this and related product
documentation must be
read and followed. Failure
to do so renders warranty
null and void.
5414 554 v1.
Installers must follow local
regulations with respect to
installation of carbon monoxide
detectors. ollow manufacturer’s
maintenance schedule of boiler.
WARNING

Table of Contents
3
Page
General Information / Safety
About these Instructions 5 ........................................................
Safety
or your Safety 5 ........................................................................
Inform Yourself
Getting Started 9 ..........................................................................
Overview of Controls and Indicators 1 ..................................
Opening the control unit 1 ........................................................
Opening the programming unit 12 ............................................
Select the Heating Circuit - Before Every Setting and
Scanning Operation 14 .................................................................
Start-up / Shutdown
Starting the Heating System 15 .................................................
Shutting Down the Heating System 16 ...................................
Starting a Heating Circuit and DHW Heating 17 ..................
Stopping DHW Heating and the Heating Circuit 17 ............
Starting DHW Heating Only 18 .................................................
Stopping DHW Heating 18 ..........................................................
Adjusting the Room
Temperature
Setting a Permanent Room Temperature 19 ...........................
Selecting the normal room temperature 19 ...........................
Selecting a reduced room temperature 2 .............................
Changing the room temperature for a few days 22 .............
Setting the holiday program 22 .................................................
Changing the Room Temperature for a
ew Hours Only 23 .......................................................................
Setting energy saving mode 23 .................................................
Setting party mode 23 .................................................................
Selecting DHW Heating
Selecting Constant DHW Heating 24 ......................................
Setting the DHW temperature 24 ..............................................
Selecting a time program (switching times) 25 .....................
Selecting automatic mode (if required) 26 .............................
Setting up an individual time program 26 ................................
Selecting DHW Heating for a ew Hours Only 27 ...............
Selecting DHW Heating Only Once 28 ....................................
urther Adjustments
Setting Time and Date 29 ............................................................
Setting the display language 29 ................................................
Adjusting the display contrast 29 .............................................
Selecting the Boiler Sequence 3 .............................................
Actual boiler sequence (standard display) 3 .........................
Controlled boiler sequence 3 ....................................................
Changing the Heating Pattern 31 ..............................................
Modifying the Boiler Heating Characteristics 33 ..................
5414 554 v1.5414 554 v1.

Table of ContentsTable of Contents
4
Page
Scanning Options
Scanning Temperatures and
Operating Status Information 34 ................................................
Scanning the ault Display 35 ...................................................
Scanning Temperatures 36 .........................................................
Order in which temperatures and operating conditions
can be scanned 36 ........................................................................
Scanning Time Programs 37 ........................................................
Scanning party or energy saving mode 37 .............................
Scanning ault Display 38 ...........................................................
Other Settings
Selecting the Time Programs 39 ................................................
Rooms are too cold 39 .................................................................
Rooms are too hot 4 ...................................................................
There is no hot water 4 .............................................................
The DHW is too hot 41 ................................................................
”OFF” is displayed by the Vitotronic 1 41 ........................
Fault symbol flashes in the display of the
Vitotronic 1 41 ..........................................................................
Fault flashes in the display
of the Vitocontrol-S, WB2B 41 ..................................................
The service display is shown by the Vitotronic 1 41 ....
“Service” is displayed by the Vitocontrol-S, WB2B 41 .......
”Remote control” is displayed by the
Vitocontrol-S, WB2B 42 ................................................................
”External control” is displayed by the
Vitocontrol-S, WB2B 42 ................................................................
”Central control” is displayed by the
Vitocontrol-S, WB2B 42 ................................................................
“Slab curing program” is displayed by the
Vitocontrol-S, WB2B 42 ................................................................
“Without function.” is displayed by the
Vitocontrol-S, WB2B 42 ................................................................
Service Instructions
Service Instructions for Your Heating System 43
Additional Information
Lighting and Operating Instructions 44 ....................................
5414 554 v1.5414 554 v1.

General Information/Safety
5
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.
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 in
column three.
This symbol indicates that other
instructions must be referenced.
or your Safety
HOperation
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.
HWorking 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.
HMaintenance and cleaning
Regular inspection and service by a
qualified heating contractor is important
to the performance of the boiler.
Neglected maintenance impacts on
warranty; regular inspection ensures
clean, environmentally friendly and
efficient operation. We recommend a
maintenance contract with a qualified
heating contractor.
Hlue gas smell
- Deactivate heating equipment.
- Open windows and doors.
- Inform your heating contractor.
HDangerous conditions
- Deactivate main power immediately.
- Close gas supply valve.
HTechnical information
Literature applicable to all aspects of the
Vitocontrol-S, WB B:
- Technical Data Manual
- Installation Instruction and Service
Instructions
- Operating Instructions and User’s
Information Manual
Additional applicable literature:
- Accessory manuals
5414 554 v1.
Indicates an imminently hazardous
situation which, if not avoided, could
result in death, serious injury or
substantial product/property damage.
WARNING
Indicates an imminently hazardous
situation which, if not avoided, may
result in minor injury or
product/property damage.
CAUTION
IMPORTANT

SafetySafety
6
or your Safety (continued)
HCarbon 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
2 34-2 2, CSA 6.19- 1) 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.
Hor 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. 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.
5414 554 v1.5414 554 v1.
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. ailure to heed thi
s
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. lue
products contain poisonous carbon
monoxide gas which can cause nausea
or asphyxiation resulting in severe
personal injury or loss of life.
WARNING
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
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.
WARNING
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

Safety
7
or your Safety (continued)
rozen 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...
HShut 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..
HHave someone check the building
frequently during cold weather and
call a qualified service agency if
required.
Or...
HInstall a reliable remote temperature
sensor that will notify somebody of
freezing conditions within the home.
5414 554 v1.
ailure 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.
WARNING

Safety
8
or your Safety (continued)
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
HEnsure ambient temperatures are higher
than 32°F / °C and lower than
1 4°F / 4 °C.
HPrevent 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.
HAvoid continuously high levels of
humidity (e.g. through frequent drying of
laundry).
HNever close existing ventilation
openings.
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.
Sources of combustion and ventilation air
contaminants
Areas likely to contain contaminants:
HNew building construction
HSwimming pools
HRemodelling areas, hobby rooms
HGarages with workshops
HFurniture refinishing areas
HDry cleaning/laundry areas and
establishments
HAuto body shops
HRefrigeration repair shops
HMetal fabrication plants
HPlastic manufacturing plants
HPhoto processing plants
HBeauty salons
Products containing contaminants:
HChlorine-type bleaches, detergents and
cleaning solvents found in household
laundry rooms
HPaint and varnish removers
HHydrochloric acid, muriatic acid
HChlorine-based swimming pool chemicals
HSpray cans containing
chlorofluorocarbons
HChlorinated waxes and cleaners
HCements and glues
HRefrigerant leaks
HCalcium chloride used for thawing
HSodium chloride used for water
softening salt
HPermanent wave solutions
HAdhesives used to fasten building
products and other similar items
HAntistatic fabric softeners used in
clothes dryers
5414 554 v1.
ire causes a risk of burns and
explosion!
H
HH
HShut down the boiler
H
HH
HClose fuel shut-off valves
H
HH
HUse a tested fire extinguisher, class
ABC.
WARNING
Incorrect ambient conditions can lead to
damage to the heating system and put
safe operation at risk.
WARNING
IMPORTANT

Inform Yourself
9
Getting Started...
The timer of the control unit switches between ”normal room temperature” and
”reduced room temperature” at the required times.
1. Normal room temperature
for the times you spend at home and
require a comfortably warm room
temperature (e.g. 68ºF / 2 ºC).
2. Reduced room temperature
for the times you are away from
home. To save energy,
a lower temperature is typically
selected (e.g. 57ºF / 14ºC).
Times and duration of the two room
temperatures can be set on the
programming unit of your control.
The temperature settings for both the
”normal room temperature” and
”reduced room temperature” can be
set according to your personal
preference.
The timer of the control unit switches domestic hot water production on and off at
the required times.
1. Domestic hot water heating can be
set to take place
during the times you spend at home
and require hot water for your daily
DHW requirements (e.g. for
showering).
2. Domestic hot water heating can be
set not to take place
for the times you spend sleeping, for
example.
Times and duration of the domestic hot
water production period can be set on
the programming unit of your control.
You may select a DHW temperature
setting based on your personal
preference of up to 140ºF / 60ºC.
The domestic hot water recirculation
pump (if installed) ensures that
domestic hot water is readily available
when domestic hot water is drawn.
5414 554 v1.

Inform Yourself
10
Overview of Controls and Indicators
You can change all settings of your heating system centrally at the Vitotronic 1 of every boiler and at the Vitocontrol-S,
WB2B.
All possible adjustments / settings are described in these operating instructions. You no longer need the individual operating
instructions for the Vitotronic 1 , HC1.
You may also make such adjustments at the remote control, if your system is equipped with one.
Remote control operating
instructions.
Opening the control unit
ACover
BControl unit flap (open to make
adjustments)
CFlap with abridged operating
instructions
All boiler controls are located behind the
control unit flap. To open, lift cover A
and pivot control flap Bdown. On the
inside of the control unit flap B, an
abridged version of these operating
instructions can be found behind a
further flap C. The abridged operating
instructions can be removed with the
flap.
5414 554 v1.

Inform Yourself
11
Overview of Controls and Indicators (continued)
Vitotronic 100, HC1
APressure gauge
BFault display (red) (see page 38)
COperating status display (green)
tr Set boiler water temperature
tw Set DHW temperature
tr+twEmissions test function
(only for heating contractors)
9Standby mode
wDHW only
DFactory default setting
EUser interface
FON / OFF switch (see page 15
and 16)
rw Heating and DHW
/No function
/ Setting values
Confirmation
Information
DStandard setting (reset)
Symbols in the display
These sysmbols are not permanently displayed, but appear subject to the system version and the operating state.
Flashing displays indicate that modifications can be made.
rBoiler enabled by the
Vitocontrol-S, WB2B
pHeating circuit pump ON
ABurner ON
SEmissions test ON (only for
service purposes)
EBurner fault
uTime adjustment display
i Information
UFault
OFF Boiler is locked out of the cascade
PScanning hours run, burner
stage 1
PPP Scanning number of burner starts
PPPP Consumption
Standard display
The standard display shows the boiler
water temperature.
After completing each adjustment on
the control unit, the display will revert
to the standard display.
5414 554 v1.
ABC D E F

Inform Yourself
12
Overview of Controls and Indicators (continued)
You can change all settings of your heating system centrally at the Vitotronic 1 of every boiler and at the Vitocontrol-S,
WB2B.
You may also make such adjustments at the remote control, if your system is equipped with one.
Remote control operating
instructions.
Opening the programming unit
AHinged flap
The programming unit is located behind
the hinged flap.
To open, pull flap from the top edge
forward.
5414 554 v1.
A

Inform Yourself
13
Overview of Controls and Indicators (continued)
Emissions test switch (see pg. 14)
Heating circuit selector buttons (pg.14)
Display window
Normal room temperature (pg. 19)
Heating programs (pg. 17)
Control on/off switch (pg. 15)
Fuse F1
Energy saving mode (pg. 23)
Party mode (pg. 23)
Hinged cover of programming unit
Operating status indicator (green)
Fault indicator (red)
Time program for central heating
(pg. 19)
Time program for domestic hot water
heating (pg. 24)
Other symbols (pg. 14)
Time program for DHW recirculation
pump (pg. 18)
Holiday program (pg. 22)
Information
Confirmation
Factory default settings
Setting buttons
Domestic hot water temperature
(pg. 24)
Reduced room temperature (pg. 2 )
Time/date
Heating curve shift (pg. 31)
Heating curve slope (pg. 31)
Hinged cover of propgramming unit
5414 554 v1.
Boiler sequence
1-23-4
Boiler sequence
1-23-4
Vitocontrol-S, WB2B

Inform Yourself
14
Overview of Controls and Indicators (continued)
Adjustment of the display window
contrast
Open the hinged cover on the
programming unit, and press and, at
the same time, adjust the contrast with
the or button.
factory default settings
Press this button to reset all altered
values to their factory default settings.
Please note that all altered values are
reset to the factory default settings.
lashing data
Data flashing in the display window
means that new settings can be
entered.
Basic display
The basic display of the Vitocontrol-S,
WB2B shows the boiler sequence. The
display reverts to showing the boiler
sequence after each setting is made on
the control unit.
Other display symbols
(These are not displayed
continuously, but appear according
to system type and operating status)
eRisk of frost
sCentral heating with normal
room temperature
mCentral heating with reduced
room temperature
ep
sp
mp Heating circuit pump ON
VMixing valve open
vMixing valve closed
wDHW heating enabled
wp DHW pump ON, DHW heating
enabled
+p DHW heating via solar heating
system
ABurner ON
uTime adjustment display
SEmissions test ON
UFault indicator
Select the Heating Circuit - Before Every Setting and Scanning Operation
Your building may be heated by several independent heating circuits (eg. underfloor heating circuits or radiator circuits).
These are selected at the control unit using keys , or
3
. The fields adjacent to these keys have been individually
labelled by your heating contractor.
Heating system with a single heating circuit:
One of the keys or and one of the keys rw,wor 9are illuminated, and you can start the adjustment
immediately.
Heating system with two or three heating circuit:
Choose the required heating circuit before every adjustment and scan.
The heating circuits are individually labelled by your heating contractor.
Vitocontrol-S WB2B
Press , or
3
.
The following keys will be illuminated:
Key , or
3
Key rw,wor 9
Key gor û(if enabled)
Note:
If you make no adjustments, the key
illumination will extinguish after a short
time.
5414 554 v1.
Boiler sequence
1-23-4

Start-up / Shutdown
15
Starting the Heating System
1. Check the heating system pressure at
the pressure gauge A. If the system
pressure is below 12 psi / .8 bar the
system pressure is too low.
2. For room air dependent operation:
Check whether the ventilation
apertures in the boiler room are open
and unobstructed.
Note:
For room air dependent operation:
This boiler requires fresh air for safe
operation. The boiler must be vented
and supplied with air and exhaust
vents.
3. Open the gas shut-off valve B.
4. Switch ON the power supply, (eg. at
the breaker or electrical disconnect
switch. Energize power / pump
module).
5. Switch ON / OFF switch “8”CON
on all control units.
The green indicator (ON indicator)
illuminates on every control unit.
After a short while, the standard
display appears in the display window
of every control unit. Your heating
system and, if installed, your remote
control units (if installed) are now
ready for use.
6. On each Vitotronic 1 , “Htg. +
DHW” must be selected, otherwise
the Vitocontrol-S, WB2B cannot use
the respective boiler to generate heat.
Check:
rw must be illuminated, otherwise
press rw.
5414 554 v1.
Vitotronic 1 , HC1
Vitocontrol-S, WB2B

Start-up / Shutdown
16
Shutting Down the Heating System
If you do not need to use your heating system temporarily, i.e. during a summer holiday, switch all heating circuits of the
Vitocontrol-S, WB2B to “Standby mode” 9(see page 17).
If you want to shut down only one boiler of your heating system, switch the relevant Vitotronic 1 to “Standby mode” 9
(see page 17).
Note:
The circulation pumps are briefly started every 4 hours to prevent them from seizing up.
Switch your heating system OFF if you do not need to use it.
We recommend you contact your local heating contractor before and after you shut down your heating system for longer
periods.
Where necessary, your contractor can take certain steps, eg. protecting the system against frost.
Vitocontrol-S, WB2B
1. Switch ON / OFF switch “8” (see
page 11 and 13) OFF on all control
units.
The green indicator (ON indicator)
extinguishes on every control unit.
2. Close the gas shut-off valve.
3. Switch the main ON / OFF switch on
the Vitocontrol-S to OFF.
Note:
Frost protection is no longer enabled.
All control unit settings are retained.
5414 554 v1.

Start-up / Shutdown
17
Starting a Heating Circuit and DHW Heating
You want to heat your rooms and have
DHW available.
Press the following keys:
1. / /
3
for the required heating
circuit.
2. for “Htg. + DHW”.
Central heating will be provided with
normal or reduced room temperature
(frost protection) according to the set
time program.
Standard setting:
From 6: to 22: hrs. normal
room temperature; otherwise reduced
room temperature.
DHW heating (if DHW tank is
installed) is enabled and the DHW
recirculation pump (if installed) is ON
according to the selected time
program.
Standard setting:
From 5:3 to 22: hrs. DHW is
boosted to the set temperature, and
the DHW recirculation pump is
switched ON.
The boiler and the DHW tank are
protected against frost.
Stopping DHW Heating and the Heating Circuit
You do not want to heat any rooms or
have DHW available.
Press the following keys:
1. / /
3
for the required heating
circuit.
2.
9
for “Standby mode”.
Central heating is disabled for the
selected heating circuit.
No DHW heating.
The boiler and DHW tank are
protected against frost.
Note:
The recirculation pumps are started
every 4 hours to prevent them from
seizing up.
5414 554 v1.

Start-up / Shutdown
18
Starting DHW Heating Only
You do not want to heat any rooms, but
you want to make DHW available.
Press the following keys:
1. / /
3
for the required heating
circuit.
2. for “Htg. + DHW”.
Central heating is disabled for that
heating circuit.
DHW heating (if DHW tank is
installed) is enabled and the DHW
recirculation pump (if installed) is ON
according to the selected time
program.
Standard setting:
From 5:3 to 22: hrs. DHW is
boosted to the set temperature, and
the DHW recirculation pump is
switched ON.
The boiler and the DHW tank are
protected against frost.
Note:
The heating circuit pumps are briefly
started automatically every 4 hours to
prevent them from seizing up.
Stopping DHW Heating
You want to heat your rooms, but do
not want to make DHW available.
Press the following keys:
1. / /
3
for the required heating
circuit.
2. for “Htg. + DHW”.
3. Delete the time phases for DHW
heating (see page 27).
or
Set the DHW temperature to 1 °C /
5 °F (see page 24).
Central heating will be implemented
with normal or reduced room
temperature (frost protection)
according to the set time program.
Standard setting:
From 6: to 22: hrs. normal
room temperature; otherwise reduced
room temperature.
No DHW heating.
The boiler and the DHW tank are
protected against frost.
Note:
The DHW primary pump is briefly
started automatically every 4 hours to
prevent it from seizing up.
5414 554 v1.

Adjusting the Room Temperature
19
Setting a Permanent Room Temperature
Observe the following points if your heating circuit should provide central heating:
1. For the respective heating circuit ,
or
3
, select “Htg. + DHW”
rw.
Check:
Press , or
3
;rw must
illuminate, otherwise press rw.
2. For each respective heating circuit
, or
3
, select the normal room
temperature (day temperature) with
rotary selector “ts” (see page 19)
and adjust the reduced room
temperature (night temperature) with
tm (see page 2 ).
3. The timing of when the heating
circuit delivers central heating with
normal or reduced room temperature
depends on the settings of the time
program (four possible time phases)
for each respective day.
If no time phases are selected, central
heating will be enabled for the whole
day at reduced room temperature.
If one or several time phases are
selected, central heating with normal
room temperature will be active for
those times.
Check:
Press , or
3
.
Press and hold down ur +
simultaneously; a time slot graphic
shows the selected time phases.
For changing the time program, see
page 2 .
Selecting the normal room temperature
1. Press , or
3
; for the required
heating circuit.
2. Select the required temperature for
the “Normal room temp.” with rotary
selector “ts”.
Normal room temp.
5414 554 v1.

Adjusting the Room Temperature
20
Setting a Permanent Room Temperature (continued)
Selecting the reduced room temperature
Press the following:
1. / /
3
for the required heating
circuit.
2. tm for “Red. room temp.”; the
current temperature flashes.
Note
When setting the reduced room
temperature to 3°C / 37°F, “ rost
protection” will be displayed.
13. / for the required temperature.
14. to confirm; the temperature
no longer flashes and is
saved.
Setting time programs (switching times)
For central heating, up to four changes per day between normal and reduced room
temperatue can be programmed (four time phases).
At the factory, time phase 1 is set for every day from 6: to 22: hrs., i.e.
during that time, all rooms are heated to the normal room temperature.
You can set identical time programs for every day or individual programs for each
day of the week.
When setting time programs, bear in mind that your heating system requires some
time to heat the rooms to the required temperature.
For a sequence of steps to delete a time phase, see page 21.
Press the following keys:
1. Press / /
3
; for the required
heating circuit.
2. ur for “Htg. time program”.
Note
If you want to terminate the time
programming early, press ur again
and confirm with .
13. / until “1-7” is displayed, if
you want to set up the same
time phases for every day
or
14. / until “Mo”, “Tu” etc. is
displayed, if you want to set
up different time phases for
the day displayed
Note
If different time phases are set for
individual days and you want to return
to identical time phases for every day,
press when “1-7” is displayed. All
time phases are returned to their original
condition.
15. to confirm; “Htg. timer 1” will
be displayed.
Note
Press if you want to skip a time
phase.
5414 554 v1.