Viessmann VITOTRONIC 100 User manual

for use by heating contractor
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for future reference.
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5793 310 - 02 02/2015
VITOTRONICr100
VITOTRONICr300-K
Vitotronic 100, type GC1B
Multi boiler system with control unit for constant temperature operation
For use with Boiler models VD2A, VD2 and CT3
Vitotronic 300-K, type MW1B
Weather-compensated cascade control
Operating Instructions
IMPORTANT
Certified as a component
part for Viessmann boilers
Vitotronic 300-K
Vitotronic 100

5793 310 - 02
Vitotronic 100, GC1B / Vitotronic 300-K, MW1B Operating
General
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”.
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.
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.
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Vitotronic 100, GC1B / Vitotronic 300-K, MW1B Operating
3
5793 310 - 02
General
Commissioning
Your System is Preset at the Factory
Your local service technician will also inform you [where
appropriate] about work he may be required to perform
on your combustion equipment (e.g. regular checks,
cleaning).
The control units are factory-set for central heating and
DHW heating:
Vitotronic 300-K: “Heating and DHW”
Your heating system is therefore ready for use.
Central heating
Between 06:00 and 22:00 h, the rooms are heated
to 68° F (20° C) “Set room temperature” (standard
heating mode).
Between 22:00 and 06:00 h, the rooms are heated
to 37° F (3° C) “Set red. room temp” (reduced heating
mode, frost protection).
Your heating contractor can make further settings for
you during commissioning. You can change any
settings individually at any time to suit your
requirements (see chapter “Central heating”).
DHW heating
Between 05:30 and 22:00 h, DHW is heated to 122° F
(50° C) “Set DHW temperature”. Any installed DHW
circulation pump is on.
Between 22:00 and 05:30 h, the DHW cylinder
temperature will not be reheated. Any installed DHW
circulation pump is off.
Your heating contractor can make further settings for
you during commissioning. You can change any
settings individually at any time to suit your
requirements (see chapter “DHW heating”).
Frost protection
Your boiler, heating circuits and DHW cylinder are
protected against frost. Wintertime/summertime
changeover
This changeover is automatic.
Time and date
The day and time were set by your heating contractor
during commissioning.
Power failure
All data is saved if there is a power failure.
The commissioning and matching of the control unit to
local conditions and building characteristics, as well as
instructing the user in the operation of the system, must
be carried out by your heating contractor. As the user of
new combustion equipment, you may be obliged to notify
your local service technician of the installation [check
local regulations].
Terminology
To provide you with a better understanding of the
functions of your control unit, the appendix contains
the chapter “Terminology” (see page 40).

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Page
Vitotronic 100, GC1B / Vitotronic 300-K, MW1B Operating
5793 310 - 02
General
Safety
Operation
Start-up/Shutdown
Central Heating
Comfort and Energy Saving Functions
DHW Heating
Further Adjustments
Safety, Installation and Warranty Requirements..............2
Commissioning..........................................................3
Your System is Preset at the Factory.............................3
Terminology..............................................................3
For your Safety......................................................6
Where to Find the Controls..........................................7
Controls, Vitotronic 100..............................................7
How to use the Controls, Vitotronic 100.......................8
.
Controls, Vitotronic 300-K..........................................9
Menu, Vitotronic 300-K.............................................10
How to use the Controls, Vitotronic 300-K..................11
Starting the Heating System.......................................12
Stopping the Heating System.....................................13
Required Settings (Central Heating).............................14
Selecting a Heating Circuit.........................................14
Setting the Room Temperature...................................15
Setting the Heating Program for Central Heating...........15
Setting the Time Program for Central Heating...............16
..
Changing the Heating Curve.......................................17
Stopping Central Heating...........................................17
Selecting Comfort Function “Party Mode”...................18
Selecting Energy Saving Function “Economy Mode”......18
Selecting Energy Saving Function “Holiday Program”....19
Required Settings (DHW Heating)................................20
Setting the DHW Temperature....................................20
Setting the Heating Program for DHW Heating..............20
Setting the Time Program for DHW Heating.................21
Stopping DHW Heating..............................................22
Selecting the Boiler Sequence.....................................23
Setting the Display Contrast.......................................23
Setting the Display Brightness....................................23
Entering Names for the Heating Circuit........................24
Setting the Time and Date.........................................25
Language Selection...................................................25
...
Setting the Temperature Unit (oC/oF)...........................25
Restoring Factory Settings.........................................26
Table of Contents

Vitotronic 100, GC1B / Vitotronic 300-K, MW1B Operating Table of Contents
5
Page
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Scanning Options
Troubleshooting
Maintenance
Additional Information
Scanning Information.................................................27
Scanning Service Messages........................................29
Scanning Fault Messages...........................................29
Emissions Test Mode................................................31
Rooms are Too Cold.................................................32
Rooms are Too Hot...................................................33
There is No Hot Water...............................................33
The DHW is Too Hot.................................................34
“Off” is Displayed at the Vitotronic 100......................34
“” is Displayed at the Vitotronic 100........................34
..
“ “ is Displayed at the Vitotronic 100.......................34
..
“ “ Flashes and “Fault” is Displayed at the
Vitotronic 300-K......................................................34
“Controls Locked Out”is Displayed at the
Vitotronic 300-K.......................................................35
“External Hook-up” is Displayed at the
Vitotronic 300-K.......................................................35
“Central Control” is Displayed at the
Vitotronic 300-K.......................................................35
“External Program” is Displayed at the
Vitotronic 300-K.......................................................35
Maintenance............................................................36
Menu Overview, Vitotronic 300-K..............................37
Terminology............................................................40

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Vitotronic 100, GC1B / Vitotronic 300-K, MW1B Operating
If you smell gas
HDon’t smoke! Don’t use naked flames or cause sparks
(e.g. by switching lights or electrical appliances on
and off)
HOpen windows and doors
HClose the gas shut-off valve
HInform your heating engineers/service contractors from
outside the building
HObserve the safety regulations of your gas supply
company (see gas meter) and those of your heating
engineers (see start-up or instruction report).
In emergencies
HImmediately switch off the power supply, e.g. at the
separate fuse or power supply disconnect switch
(unless there is a smell of gas).
HClose the shut-off valves in the oil pipes or close the
gas shut-off valve, whichever applicable.
HUse suitable extinguishers in the event of fire.
Installation of additional components
The installation of additional components which have not
been tested together with the boiler can adversely affect
the function and performance of the boiler.
Our warranty does not cover and we accept no liability
for damage attributable to the installation of such
components.
Boiler room conditions
HDo not use a room in which the air is polluted by
halogenated hydro-carbons (e.g. as contained in
aerosols, paints, solvents and cleaning agents)
HDo not use a room subject to high levels of dust
HDo not use a room subject to permanently high humidity
HThe room should be frost-protected
HMax. ambient temperature 95° F (35° C).
HProvide good ventilation and do not close or obstruct
vents (if installed).
Safety
CAUTION
Follow these safety instructions closely to avoid the risk
of injury and damage to property.
For your Safety (continued)
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.
HFlue gas smell
- Deactivate heating equipment.
- Open windows and doors.
- Inform your heating contractor.
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.
HDangerous conditions
- Deactivate main power immediately.
- Close gas supply valve.
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.
HTechnical Data Manual
- Installation Instruction and Service Instructions
- Operating Instructions and User’s Information Manual
Additional applicable literature:
- Accessory manuals
This symbol indicates a reference to other
instructions which must be observed.

7
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Vitotronic 100, GC1B / Vitotronic 300-K, MW1B Operating Operation
Where to Find the Controls
Each boiler is equipped with its own control unit for
constant temperature operation.
These control units are regulated by a higher weather-
compensated cascade control unit.
HControl unit for constant temperature operation on the
boiler: Vitotronic 100
HHigher weather-compensated cascade control unit:
Vitotronic 300-K
You can change all settings for your heating system
centrally at the control unit programming unit.
You may also make such changes at the remote control
units, if your system is equipped with such units.
The settings at the Vitotronic 100 are described in these
operating instructions. You do not need the operating
instructions provided with these control units.
Controls, Vitotronic 100
The programming unit is located behind the flap.
To open, pull the flap from the top edge forward.
Refer to the Remote control Operating Instructions
Legend
ACover flap
Opening the Vitotronic 100, type GC1B control unit
Takes you to the previous step in the menu or cancels
a setting that has been started.
Cursor keys
To scroll through the menu or to set values.
Programming unit
OK Confirms your selection or saves the setting.
? No function.
Enables you to call up the menu for settings and
scanning.

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Vitotronic 100, GC1B / Vitotronic 300-K, MW1B Operating
How to Use the Controls, Vitotronic 100
Operation
Symbols
These symbols are not always displayed, but appear
subject to the system version and the operating state.
Flashing displays indicate that modifications can be made.
Menu
Information
Further adjustments
S Emissions test mode
Heating program
9 Standby mode with frost protection monitoring
The boiler is available to the cascade control unit for
heat production.
Note: If a boiler is not operational, the following appears
in the display of the corresponding control unit:
In multi boiler systems, each Vitotronic 100 indicates
the boiler number on the standard display. The following
example shows the boiler water temperature as indicated
by boiler 3.
Messages
Service message
u The service interval has expired.
 Fault message
Displays
pCirculation pump at output 20 is running
A Burner in operation
D Factory settings
Press .
This takes you to the menu for settings and scanning.

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5793 310 - 02
Vitotronic 100, GC1B / Vitotronic 300-K, MW1B Operating Operation
Controls, Vitotronic 300-K
Opening the Vitotronic 300-K, type MW1B control unit
The programming unit is located behind the flap.
To open, pull the flap from the top edge forward.
Menu “Help”
You can view a short guide giving an explanation of the
controls and information about heating circuit selection
(see page 14).
Call up the short guide as follows:
HIf the screen saver is active (see page 11):
Press ?
HFrom anywhere in the menu:
Press until the standard menu is shown (see the
following chapter).
Press ?
Legend
ACover flap
Programming unit
Takes you to the previous step in the menu or
cancels a setting that has been started.
Cursor keys
To scroll through the menu or to set values.
OK Confirms your selection or saves the setting.
? To call up additional information regarding the
selected menu option.
Calls up the extended menu.

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10
Vitotronic 100, GC1B / Vitotronic 300-K, MW1B Operating
Menu, Vitotronic 300-K
Operation
There are two control levels available, the “Standard
menu” and the “Extended menu”.
The menu overview can be found on page 37.
Standard menu
Call up the standard menu as follows:
HIf the screen saver is active (see page 11)
Press OK.
HFrom anywhere in the menu:
Keep pressing until the standard menu appears.
In the standard menu, the number of boilers installed in
the heating system is shown in a specific order (boiler
sequence). You can change the boiler sequence
(see page 23).
The meanings of the icons are as follows:
HSolid white:
The boiler has been enabled by the cascade control unit
and is operating (boiler 3 in this example).
HSolid grey:
The boiler is available for generating heat but has not
been enabled by the cascade control unit (boilers 2 and
4 in this example).
HSolid black and crossed out:
This boiler is not available for heat production (boiler 1
in this example).
Note: 2 minutes after any setting has been made, the
display automatically reverts to the standard menu.
Extended menu
Call up the extended menu as follows:
HIf the screen saver is active (see page 11):
Press OK and then .
HFrom anywhere in the menu:
Press .
Note: Your heating contractor can block the use of the
extended menu. In this case, you can only scan
fault messages.
Legend
ADialogue line