Viessmann VITOTRONIC 100 GC1 Installation And Service Instructions Manual page 89

Steps
(continued)
5. Match the control unit to the system type
6. Check outputs (actuators) and sensors
1 2 3 4 5 6 7
1 2 3 4 5 6 7
Set the following coding addresses in
coding 2:
"00" System type
"01" Single or multi-boiler system
"02" Burner type
"03" Oil or gas-fired operation
"07" Boiler number
"0C" Return temperature raising
"0d" Therm-Control is effective for ...
"4C" plug sÖ function
"4d" plug sL function
"4E" plug gS function
Carry out relay test
1. Press and simultaneously for
approx. 2 seconds.
2. Select relay outputs with the
button.
3. Press .
The following relay outputs can be
selected depending on the system
equipment installed:
Check sensors
1. Press .
2. Scan sensors with or
3. Press .
See page 117 for coding 2.
Relay test is activated.
or
Relay test is terminated.
Display Relay function
11 Burner/stage 1 ON
12
Burner stage 1 and 2
ON/modulation open
13 Burner modulation neutral
14
Burner modulation closed
15 Output 20 ON
16 Output 29 ON
17
Output 52 open
18 Output 52 neutral
19
Output 52 closed
10 DHW pump ON
11 Central fault indicator ON
Scanning of operating status
information is activated
(see page 97).
.
Scanning is terminated.
Start-up
89