Please file in Service Binder
Operating Instructions
and User’s Information Manual
Vitotronic 100, GC1 Series
Digital boiler control unit
VITOTRONIC 100, GC1
IMPORTANT
Certified as a component part
of Viessmann boilers only
5351 339 v1.1 05/2012
Read and save these instructions
for future reference.
Introductory information
For your safety
Please follow these safety instructions closely to avoid the risk of injury to persons and damage to property.
If you smell gas
Don’t smoke! Don’t use naked
flames or cause sparks (e.g. by
switching lights or electrical
appliances on and off)
Open windows and doors
Close the gas shut-off valve
Inform your heating engineers/service
contractors from outside the building
Observe 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
Immediately switch off the power
supply, e.g. at the separate fuse or
power supply disconnect switch
(unless there is a smell of gas).
Close the shut-off valves in the oil
pipes or close the gas shut-off valve,
whichever applicable.
Use suitable extinguishers in the
event of fire.
Work on the equipment
Installation, initial start-up,
maintenance and repairs must be
carried out by a competent person
(heating engineer/service contractor).
Before work is undertaken on the
equipment/heating system, switch
off the power supply voltage (e.g. at
the separate fuse or power supply
electrical isolator switch) and take
steps to prevent it from being
switched on again.
Gas-fired systems: Also close the
gas shut-off valve and make secure
to prevent unauthorized use.
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
Do not use a room in which the
air is polluted by halogenated
hydrocarbons (e.g. as contained
in aerosols, paints, solvents and
cleaning agents)
Do not use a room subject to high
levels of dust
Do not use a room subject to
permanently high humidity
The room should be frost-protected
Max. ambient temperature
35 °C / 95 °F.
Provide good ventilation and do
not close or obstruct vents
(if installed).
This symbol indicates a
reference to other
instructions which must
be observed.
This header denotes
Multispecial instructions which
boiler
system apply to the use of the
Vitotronic 100 in a
multi-boiler system.
Notes on applicability
The Vitotronic 100, GC1, can be used in
single-boiler systems,
multi-boiler systems in conjunction with Vitocontrol-S, VD2/CT3/CM2
or
multi-boiler systems with an external master control.
Multi-boiler system with external master control
MultiPlease observe the instructions marked by this header in this
boiler
system document as well the instructions for the external master control.
5351 339 v1.1
Multi-boiler system in conjunction with Vitocontrol-S, VD2/CT3/CM2
For this system type you need only consult the operating
instructions for the Vitocontrol-S, VD2/CT3/CM2. These contain all the
operating steps for the Vitotronic 100, GC1, too.
2
Index
Page
Useful tips
Instructions in brief
Reference guide
Introductory information
For your safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Notes on applicability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
2
Ready for operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview of controls and indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the heating program (winter, summer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
5
6
Switching on and off
Starting up the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shutting down the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
7
Settings
Changing the boiler water temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Changing the domestic hot water temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Scanning
Scanning temperatures and operating status information
Information
.................
11
Troubleshooting guide
Diagnosis and correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
with single-boiler systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
with multi-boiler systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Servicing/cleaning instructions and note on disposal
of unwanted equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
..............................................................................................
18
5351 339 v1.1
Alphabetical index
3
Ready for operation
The main controls
You can carry out all the settings on your heating system centrally on the
control unit.
The control unit is behind the hinged cover. The hinged cover is opened by
pulling the top gently downwards towards you.
You must close the hinged cover again after use.
Settings and scans possible on the Vitotronic 100 used in
single-boiler
systems
multi-boiler
systems
Heating programs
Yes
Yes
Domestic hot water only
Yes
No
Standby operation
Yes
Yes
Change the boiler water
temperature
Yes
No
Change the domestic hot water
temperature
Yes
No
Scan temperatures and
operating status information
Yes
Yes
Display fault codes
Yes
Yes
5351 339 v1.1
Central heating and domestic
hot water
4
Ready for operation
Overview of controls and indicators
Manual override (page 13)
Changing the boiler water temperature
(page 9)
(without function in multi-boiler system)
Changing the domestic hot water
temperature (page 10)
(without function in multi-boiler system)
Value selector buttons
Information (page 11)
Confirmation button
Factory settings (see below)
Display window
Heating program selector buttons (page 6)
w without function in multi-boiler system
Adjustable high limit
Manual reset fixed high limit
TUV
Power on/off switch (page 7)
Fuse F1, F2
TUV (for service purposes only)
Operating status indicator (green) (page 7)
Fault indicator (red) (page 12)
Flashing data
Data flashing in the display window
means that new settings can be
entered.
Other display symbols
(These are not displayed continuously,
but appear according to system type
and operating status)
8 Digital display of the corresponding value
°C
Unit of measurement for temperature values
h
Unit of measurement for display
of burner hours run
U
Fault message
r Central heating ON
rp Displayed when output sÖ is
activated
A
w
Burner ON
Domestic hot water heating
released
wp DHW pump (circulation pump for
heating the DHW tank) ON
|
Scan hours run
1st stage burner
||
Scan hours run
2nd stage burner
||| Scan number of burner starts
5
5351 339 v1.1
Factory settings
Press this button to reset all altered values to their factory settings. Please
note that all altered values are reset to
the factory settings.
Ready for operation
Selecting the heating program (winter, summer)
In a multi-boiler system
Multi the
button is without function.
boiler
system domestic hot water heating can only be set on the master control.
When pressed, the corresponding
button is illuminated.
Central heating and domestic hot water
Central heating
Domestic hot water supply (if a DHW
tank is installed)
Freeze-up protection of the boiler and
the DHW tank
Example
For the winter and transitionary
periods.
Domestic hot water only
No central heating
Domestic hot water supply (if a DHW
tank is installed)
Freeze-up protection of the boiler and
the DHW tank
Example
For the summer.
Standby operation
No central heating
No domestic hot water supply
Freeze-up protection of the boiler and
the DHW tank
Please note:
The circulation pumps are
switched on for a short time
every 24 hours to prevent them
from seizing up.
5351 339 v1.1
Select the required heating program
,
or button.
with the
6
Switching on and off
Starting up the heating system
The initial start-up and matching of the control unit to local conditions and
the structural characteristics of the building must be carried out by your
heating contractor.
In a multi-boiler system, only the Vitotronic 100 and the
Multicorresponding boiler are started up when the following steps are
boiler
system carried out.
1. Check the pressure of the heating
system on the manometer.
If the needle is below the red
marker, the system pressure is too
low – in which case add more water
or contact your heating contractor.
2. Open the shut-off valves in the oil
pipes (at the boiler) or open the gas
shut-off valve, whichever applicable.
3. Switch on the power supply voltage,
e.g. at the separate fuse or a power
supply disconnect switch.
The boiler is now ready for operation.
5351 339 v1.1
4. Switch on the heating system on/off
switch ”8”; the operating status is
indicated by the green lamp and,
after a short time, the boiler
temperature appears in the display
window.
7
Switching on and off
Shutting down the heating system
In a multi-boiler system, only the corresponding boiler can be
Multiswitched off with the Vitotronic 100. If the complete boiler system
boiler
system is to be switched off, it is necessary to switch off the master
control and the power supply power supply to the heating system
as well.
If you do not want to use the boiler temporarily, select standby operation
(see page 6).
If you do not want to use the boiler for a long period (several months), you
should shut it down.
We advise you to contact your heating contractor before shutting down the
boiler for long periods. Your heating contractor will take any necessary action,
e.g. for freeze-up protection of the system or to safeguard the heat exchange
surfaces.
1. Switch off the heating system on/off
switch ”8”.
The green lamp goes out. The power
supply to the boiler is now switched
off.
There is no freeze-up protection of
the boiler and DHW tank.
Please note:
The settings of the control unit
remain intact.
5351 339 v1.1
2. Close the shut-off valves in the oil
pipes (at the boiler) or close the gas
shut-off valve, whichever applicable.
8
Settings
Changing the boiler water temperature
In a multi-boiler system, the tr button (for setting the boiler water
Multitemperature) is without function.
boiler
system If the button is nevertheless pressed, the boiler water temperature
continues to be displayed in the display window.
1. tr
60
__...60
°C
Press tr; the previous
boiler water temperature
setting flashes in the
display window.
r
2.
Press the
/
button
until the required
temperature value appears.
Confirm by pressing
;
the temperature value stops
flashing and is stored. The
display changes and shows
the boiler temperature.
5351 339 v1.1
3.
/
9
Settings
Changing the domestic hot water temperature
In a multi-boiler system, the Vitotronic 100 cannot be used for
Multicontrolling a DHW tank.
boiler
system The
button is without function.
Press
; the previous
domestic hot water
temperature setting flashes
in the display window.
1.
60
__...50
°C
w
2.
Press the
/
button until
the required temperature
value appears.
Confirm by pressing
; the
temperature value stops
flashing and is stored.
The display changes and
shows the boiler
temperature.
5351 339 v1.1
3.
/
10
Scanning
Scanning temperatures and operating status information
You can scan various actual temperatures and operating status information depending on the system components connected:
Data
displayed
Meaning
Please note
3__65.°C
Boiler water temperature
––
5__50.°C
Domestic hot water
temperature
(1st DHW tank temperature
sensor)
Only displayed if DHW tank
temperature sensor connected
5o_45.°C
Domestic hot water
temperature
(2nd DHW tank temperature
sensor)
Only displayed if 2nd DHW tank
temperature sensor connected
6__55.°C
Return temperature at aJA
(1st return temperature
sensor)
Only displayed if temperature
sensor of Therm-Control
or
temperature sensor T1
connected
8_190.°C
Flue gas temperature
Only displayed if flue gas
temperature sensor connected
9__60.°C
Return temperature at aJB
(2nd return temperature
sensor)
Only displayed if temperature
sensor T2 connected
|
Burner hours run
1st stage
The hours run can be reset to
”0” by pressing D.
The hours run displayed are
approximate values only.
Burner hours run
2nd stage
The hours run can be reset to
”0” by pressing D.
The hours run displayed are
approximate values only.
Burner starts
The number of burner starts can
be reset to ”0” by pressing D.
03572.h
||
00572.h
|||
30417.
Press
; the first
temperature appears in the
display window.
1.
60
3_...65
°C
2.
5351 339 v1.1
3.
/
Press
/
to scan other
data (see table above).
Press
to exit the
scanning mode.
The display changes and
shows the boiler
temperature.
11
Troubleshooting guide
Diagnosis and correction
If a fault occurs on the heating system, it will be indicated in the display
window and by the flashing red fault lamp (see page 5).
Using the scan facility, you can read off the fault code yourself and inform
your heating contractor accordingly.
In a multi-boiler system, the Vitotronic 100 only displays those
Multifaults which are applicable to it. Therefore you should always
boiler
system check all the other control units in your heating system for faults too.
1.
/
_1...38.U
Press
/
to display the
individual fault codes if
several faults have
occurred simultaneously.
Press
to confirm;
the display changes and
shows the boiler
temperature.
2.
Please note:
The fault message will re-appear
on the following day if the fault
is not corrected in the meantime.
The red fault lamp continues to
flash until the fault has been
corrected.
To call up an acknowledged fault message
Press
for approx.
2 seconds.
1.
/
Press
/
to display
the individual fault codes
if several faults have
occurred simultaneously.
5351 339 v1.1
2.
The fault code is displayed.
12
Troubleshooting guide
Diagnosis and correction with single-boiler systems
Fault
Cause
Remedy
Heating system does not start up
Heating system switch ”8” turned
to OFF on the control unit
Switch on
Electrical isolator switch, if installed,
is switched off
Switch on electrical isolator switch
Fuse in the domestic power circuit or
in the control unit has blown or
tripped
Inform heating contractor
Heating program ”9” is set (the
corresponding button is illuminated)
Set ”rw” or ”w” heating program
(page 6)
Vitoair draught stabilizer defective
(only on boilers with pressure jet
burner)
Inform heating contractor.
Change setting of Vitoair to
manual operation:
Press in rotary knob A on
motor and turn fully beyond
setting ”4”.
Burner does not switch on
A
Failure of motor-controlled flue gas
damper (only on gas boilers with
atmospheric burner)
Inform heating contractor.
Change setting of motor-controlled
flue gas damper to manual operation:
Press in rotary knob A on motor and
turn fully beyond setting ”4”.
5351 339 v1.1
A
The burner is operating, but no hot
water
(only on systems with domestic
hot water tank)
Fault on control unit
After consulting your heating
contractor, the boiler can be operated
temporarily with constant boiler
water temperature by turning the
emissions test switch ”S” to ”h”;
leave cover open
No fuel
Oil or LPG
Check fuel supply and re-order if
necessary.
Natural gas:
Open gas-shut off valve or contact
gas supply company if necessary.
Control unit incorrectly programmed
or set
Check domestic hot water
temperature and correct if
necessary (see page 10)
DHW tank temperature sensor or
circulation pump for heating the
DHW tank defective
Inform heating contractor
13
Troubleshooting guide
Diagnosis and correction with single-boiler systems
(continued)
Fault
Cause
Remedy
Burner does not start; red fault
indicator (see page 5) flashes on the
control unit and red fault lamp is
illuminated on the burner
Faulty start of burner
Make a new attempt to start by
pressing the reset button
H on the front of the burner hood
with pressure jet burners,
H on the front panel of the boiler
with atmospheric burners.
If the burner still fails to operate
after pressing the reset button,
check the points stated in the
section headed ”Starting up the
heating system” and then press the
reset button again.
If the burner still fails to switch on,
contact your heating contractor.
The rooms are cold even though the
burner is operating
Heating program ”w” or ”9” is set
(corresponding button is illuminated)
Set heating program ”rw”
(page 6)
Operation with domestic hot water
tank only:
Domestic hot water supply has
priority
Wait until the domestic hot water
tank has heated up
Control unit incorrectly programmed
or set
Check and, if necessary, correct the
settings for temperatures (page 9)
and the heating program (page 6)
The rooms are cold during the day,
but warm at night
Control unit incorrectly programmed
or set
Check and, if necessary, correct the
settings for temperatures (page 9)
and the heating program (page 6)
Fault symbol ”U” appears in the
display window with flashing fault
code
Fault on heating system
Make a note of the fault code
(page 12) and inform your heating
contractor
5351 339 v1.1
The room temperature is not high
enough with a low outdoor
temperature
14
Troubleshooting guide
Diagnosis and correction with multi-boiler systems
Fault
Cause
Remedy
The boiler does not start up
Heating system switch ”8” turned
to OFF on the control unit
Switch on
Electrical isolator switch,
if installed, is switched off
Switch on electrical isolator switch
Fuse in the domestic power circuit or
in the control unit has blown or
tripped
Inform heating contractor
No request from the master control
Check the settings on he master
control
Heating program ”9” is set (the
corresponding button is illuminated)
Set ”rw” heating program
(page 6)
Vitoair draught stabilizer defective
(only on boilers with pressure jet
burner)
Inform heating contractor.
Change setting of Vitoair to
manual operation:
Press in rotary knob A on
motor and turn fully beyond
setting ”4”.
The burner does not switch on
A
Failure of motor-controlled flue gas
damper (only on gas boilers with
atmospheric burner)
Inform heating contractor.
Change setting of motor-controlled
flue gas damper to manual operation:
Press in rotary knob A on motor
and turn fully beyond setting ”4”.
A
After consulting your heating contractor, the boiler can be operated
temporarily with constant boiler
water temperature by turning the
emissions test switch ”S” to ”h”;
leave cover open
No fuel
Oil or LPG:
Check fuel supply and re-order if
necessary.
Natural gas:
Open gas-shut off valve or contact
gas supply company if necessary.
5351 339 v1.1
Fault on control unit
15
Troubleshooting guide
Diagnosis and correction with multi-boiler systems
(continued)
Fault
Cause
Remedy
Burner does not start; red fault
indicator (see page 5) flashes on
the control unit and red fault lamp
is illuminated on the burner
Faulty start of burner
Make a new attempt to start by
pressing the reset button
on the front of the burner hood
with pressure jet burners,
on the front panel of the boiler
with atmospheric burners.
If the burner still fails to operate
after pressing the reset button,
check the points stated in the
section headed ”Starting up the
boiler” and then press the reset button again. If the burner still fails to
switch on, contact your heating
contractor.
The rooms are cold even though the
burner is operating
Heating program ”9” is set
(corresponding button is illuminated)
Set heating program ”rw”
(page 6)
Operation with domestic hot water
tank only:
Domestic hot water supply has
priority
Wait until the domestic hot water
tank has heated up
Fault on boiler or heating system
Make a note of the fault code
(page 12) and inform your heating
contractor
5351 339 v1.1
Fault symbol ”U” appears in the display window with flashing fault code
16
Servicing instructions
Servicing/cleaning instructions and note on disposal of unwanted equipment
Servicing
Servicing of heating systems is required
under current heating system regulations and standards (DIN 4755, DIN
4756 and DIN 1988-8).
Boiler
All boilers have to be cleaned at certain
intervals as the flue gas temperature
and therefore the energy loss rise as
the level of contamination increases.
Cleaning
The equipment can be cleaned with
domestic cleaning agents available
on the market (do not use abrasive
cleaning agents).
Regular servicing of the heating system
will ensure troublefree, energy-saving
and environmentally friendly heating.
We strongly advise you to arrange a
service contract with your heating contractor.
We recommend the use of a flue gas
sensor.
The efficiency of the system will be
impaired if the flue gas temperature
is excessively high due to contam
ination of the boiler or incorrect
adjustment of the burner. In this case
it may be necessary to clean the
boiler or readjust the burner.
Note on disposal of unwanted
equipment
The unit contains an inbuilt,
non-toxic battery.
To safeguard the environment,
please dispose of spent batteries
properly via the appropriate
collection points.
The battery should be removed by
a competent person.
A built-in hours run meter measures
the operating times of the burner.
The longer the operating times, the
lower the standby losses.
5351 339 v1.1
Operational checks
The following operational checks
should be carried out every month:
Regularly check the pressure of the
system.
Check correct operation of safety
valve.
Check correct operation of control
equipment.
Check all seals and re-seal if
necessary.
Check the ventilation facilities of the
boiler room (see safety note on page
2).
Check function of neutralizing unit.
Check level of neutralizing agent.
17
Alphabetical index
Alphabetical index
A
Acknowledging fault messages, 12
G
Gas shut-off valve, 2, 7
B
Boiler room, 2
Boiler water temperature, 9
H
Heating system on/off switch, 5, 7
C
Central heating and domestic hot
water, 6
Changing the boiler water temperature,
9
Changing the domestic hot water temperature, 10
I
Index, 3
Indicators, 5
Initial start-up, 7
L
Lamps (LEDs), 5, 7
Cleaning, 17
Controls, 4, 5
D
DHW pump, 5
Diagnosis, 12
Display window, 5
Domestic hot water, 6
Domestic hot water supply, 6, 10, 14
E
Emergencies, 2
External control, 2
N
Note on applicability, 2
Notes on safety, 2
T
Temperature settings, 9
Troubleshooting, 12
W
Waste disposal, 17
Winter operation, 6
Work on the equipment, 2
O
Operating status indicator, 5, 7
R
Re-starting the system, 7
Retrieving fault messages, 12
5351 339 v1.1
F
Factory setting, 5
Fault display, 5
Fault messages, 12
Faults, 12
Flue gas temperature, 17
Freeze-up protection, 6, 8
Fumes, 2
M
Main controls, 4
Multi-boiler system, 2
S
Safety instructions, 2
Scanning the domestic hot water temperature, 11
Selecting the heating program, 6
Service contract, 17
Servicing, 17
Shutting down the control unit, 8
Shutting down the boiler, 8
Shutting down the system, 8
Single-boiler system, 2
Smell of gas, 2
Standby operation, 6, 8
Starting up the boiler, 7
Starting up the system, 7
Summer operation, 6
Switching off the system, 8
Switching off the unit, 8
Switching on the system, 7
Switching on the unit, 7
18
5351 339 v1.1
19
Printed on environmentally friendly
(recycled and recyclable) paper.
Technical information subject to change without notice.
20
Viessmann Manufacturing Company Inc.
750 McMurray Road
Waterloo, Ontario • N2V 2G5 • Canada
Tel. (519) 885-6300 • Fax (519) 885-0887
www.viessmann.ca • info@viessmann.ca
5351 339 v1.1
Viessmann Manufacturing Company (U.S.) Inc.
45 Access Road
Warwick, Rhode Island • 02886 • USA
Tel. (401) 732-0667 • Fax (401) 732-0590
www.viessmann-us.com • info@viessmann-us.com