Viessmann Vitotronic 100 GC1 Guide

VITOTRONIC 100, GC1
Operating Instructions
and User’s Information Manual
Vitotronic 100, GC1 Series
Digital boiler control unit
Certified as a component part
of Viessmann boilers only
Read and save these instructions
for future reference.
IMPORTANT
Please file in Service Binder
5351 339 v1 1 05/2012

Introductory information
2
For your safety
Please follow these safety instructions closely to avoid the risk of injury to persons and damage to property.
If you smell as
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 emer encies
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
special instructions which
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
Please observe the instructions marked by this header in this
document as well the instructions for the external master control
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
5351 339 v1 1
Multi-
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Multi-
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system

Index
3
Page
Useful tips
Introductory information
For your safety 2
Notes on applicability 2
Instructions in brief
Ready for operation 4
Overview of controls and indicators 5
Selecting the heating program (winter, summer) 6
Reference uide
Switchin on and off
Starting up the boiler 7
Shutting down the boiler 7
Settin s
Changing the boiler water temperature 9
Changing the domestic hot water temperature 10
Scannin
Scanning temperatures and operating status information 11
Information
Troubleshootin uide
Diagnosis and correction 12
with single-boiler systems 13
with multi-boiler systems 15
Servicin /cleanin instructions and note on disposal
of unwanted equipment 17
Alphabetical index 18
5351 339 v1 1

Ready for operation
4
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.
Settin s and scans possible on the Vitotronic 100 used in
sin le-boiler
systems
multi-boiler
systems
Heating programs
Central heating and domestic
hot water
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

Ready for operation
5
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)
wwithout function in multi-boiler system
Adjustable high limit
Manual reset fixed high limit
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)
Factory settin s
Press this button to reset all altered va-
lues to their factory settings Please
note that all altered values are reset to
the factory settings
Flashin 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 correspon-
ding value
°C Unit of measurement for tem-
perature values
hUnit of measurement for display
of burner hours run
UFault message
rCentral heating ON
rp Displayed when output sÖ is
activated
ABurner ON
wDomestic 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
5351 339 v1 1
TUV

Ready for operation
6
Selectin the heatin pro ram (winter, summer)
In a multi-boiler system
the button is without function
domestic hot water heating can only be set on the master control
Select the required heating program
with the , or button
hen pressed, the corresponding
button is illuminated.
Central heatin 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.
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Switching on and off
7
Startin up the heatin 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
corresponding boiler are started up when the following steps are
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
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
The boiler is now ready for operation.
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Switching on and off
8
Shuttin down the heatin system
In a multi-boiler system, only the corresponding boiler can be
switched off with the Vitotronic 100. If the complete 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.
e 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.
2. Close the shut-off valves in the oil
pipes (at the boiler) or close the gas
shut-off valve, whichever applicable
5351 339 v1 1
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Settings
9
Chan in the boiler water temperature
In a multi-boiler system, the tr button (for setting the boiler water
temperature) is without function.
If the button is nevertheless pressed, the boiler water temperature
continues to be displayed in the display window.
60 °C
__...60
r
1. tr Press tr; the previous
boiler water temperature
setting flashes in the
display window
2. / Press the / button
until the required
temperature value appears
3. Confirm by pressing ;
the temperature value stops
flashing and is stored The
display changes and shows
the boiler temperature
5351 339 v1 1
Multi-
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Settings
10
Chan in the domestic hot water temperature
In a multi-boiler system, the Vitotronic 100 cannot be used for
controlling a DH tank.
The button is without function.
60 °C
__...50
w
1. Press ; the previous
domestic hot water
temperature setting flashes
in the display window
2. / Press the / button until
the required temperature
value appears
3. Confirm by pressing ; the
temperature value stops
flashing and is stored
The display changes and
shows the boiler
temperature
5351 339 v1 1
Multi-
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Scanning
11
Scannin temperatures and operatin status information
You can scan various actual temperatures and operating status information depend-
ing on the system components connected:
Data
displayed
Meanin 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
|
03572. h
Burner hours run
1st stage
The hours run can be reset to
”0” by pressing D
The hours run displayed are
approximate values only
||
00572. h
Burner hours run
2nd stage
The hours run can be reset to
”0” by pressing D
The hours run displayed are
approximate values only
|||
30417.
Burner starts The number of burner starts can
be reset to ”0” by pressing D
60 °C
3_...65
1. Press ; the first
temperature appears in the
display window
2. / Press / to scan other
data (see table above)
3. Press to exit the
scanning mode
The display changes and
shows the boiler
temperature
5351 339 v1 1

Troubleshooting guide
12
Dia nosis 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
faults which are applicable to it. Therefore you should always
check all the other control units in your heating system for faults too.
_1...38.
U
1. / Press / to display the
individual fault codes if
several faults have
occurred simultaneously
2. Press to confirm;
the display changes and
shows the boiler
temperature
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 acknowled ed fault messa e
1. Press for approx
2 seconds
The fault code is displayed.
2. / Press / to display
the individual fault codes
if several faults have
occurred simultaneously
5351 339 v1 1
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Troubleshooting guide
13
Dia nosis and correction with sin le-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
Burner does not switch on 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 Aon
motor and turn fully beyond
setting ”4”
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 Aon motor and
turn fully beyond setting ”4”
A
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
The burner is operating, but no hot
water
(only on systems with domestic
h
o
t
w
a
t
e
r
t
a
n
k
)
Control unit incorrectly programmed
or set
Check domestic hot water
temperature and correct if
necessary (see page 10)
(
o
n
l
y
o
n
s
y
s
t
e
m
s
w
i
t
h
d
o
m
e
s
t
i
c
hot water tank) DHW tank temperature sensor or
circulation pump for heating the
DHW tank defective
Inform heating contractor
5351 339 v1 1

Troubleshooting guide
14
Dia nosis and correction with sin le-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
Hon the front of the burner hood
with pressure jet burners,
Hon 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
The room temperature is not high
enough with a low outdoor
temperature
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

Troubleshooting guide
15
Dia nosis 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
The burner does not switch on 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 Aon
motor and turn fully beyond
setting ”4”
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 Aon motor
and turn fully beyond setting ”4”
A
Fault on control unit After consulting your heating con-
tractor, 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

Troubleshooting guide
16
D
ia nosis 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 but-
ton 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 symbol ”U” appears in the dis-
play window with flashing fault code
Fault on boiler or heating system Make a note of the fault code
(page 12) and inform your heating
contractor
5351 339 v1 1

Servicing instructions
17
Servicin /cleanin instructions and note on disposal of unwanted equipment
Servicin
Servicing of heating systems is required
under current heating system regula-
tions and standards (DIN 4755, DIN
4756 and DIN 1988-8)
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 con-
tractor
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
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
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
A built-in hours run meter measures
the operating times of the burner
The longer the operating times, the
lower the standby losses
Cleanin
The equipment can be cleaned with
domestic cleaning agents available
on the market (do not use abrasive
cleaning agents)
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
5351 339 v1 1

Alphabetical index
18
Alphabetical index
A
Acknowledging fault messages, 12
B
Boiler room, 2
Boiler water temperature, 9
C
Central heating and domestic hot
water, 6
Changing the boiler water temperature,
9
Changing the domestic hot water tem-
perature, 10
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
F
Factory setting, 5
Fault display, 5
Fault messages, 12
Faults, 12
Flue gas temperature, 17
Freeze-up protection, 6, 8
Fumes, 2
G
Gas shut-off valve, 2, 7
H
Heating system on/off switch, 5, 7
I
Index, 3
Indicators, 5
Initial start-up, 7
L
Lamps (LEDs), 5, 7
M
Main controls, 4
Multi-boiler system, 2
N
Note on applicability, 2
Notes on safety, 2
O
Operating status indicator, 5, 7
R
Re-starting the system, 7
Retrieving fault messages, 12
S
Safety instructions, 2
Scanning the domestic hot water tem-
perature, 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
T
Temperature settings, 9
Troubleshooting, 12
W
Waste disposal, 17
Winter operation, 6
Work on the equipment, 2
5351 339 v1 1

19
5351 339 v1 1

Viessmann Manufacturing Company Inc
750 McMurray Road
Waterloo, Ontario •N2V 2G5 •Canada
Tel [phone] •Fax [phone]
www viessmann ca •info@viessmann ca
Viessmann Manufacturing Company (U S ) Inc
45 Access Road
Warwick, Rhode Island •02886 •USA
Tel [phone] •Fax [phone]
www viessmann-us com •info@viessmann-us com
20
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Technical information subject to change without notice