Low-Voltage Motherboard - Viessmann VITOTRONIC 100 GC1 Installation And Service Instructions Manual

Technical Data
Rated voltage: 120 V~
Rated frequency: 60 Hz
Rated actual: 2 x 6 A~
Power
consumption: 10 W
Protection
class: I
Degree of
protection: IP 20 D to EN
60 529, to be
guaranteed by
mounting/integration
System Components
Line voltage motherboard, Part No. 7165 792
Low-voltage motherboard, Part No. 7820 290
Ambient
temperature
during
operation: 0 to 40°C /
32 to 104°F
For use in boiler
rooms (normal
ambient conditions)
during
storage and
transport: –20 to 65°C /
-4 to 149°F
Additional information
Relay outputs at 120 V~ for
control
output sÖ:
2 FLA, 120 VAC
circulation pump
for heating the
DHW tank sA: 2 FLA, 120 VAC
shunt pump or
boiler circuit
pump sL:
2 FLA, 120 VAC
central fault
indicator gÖ:
2 FLA, 120 VAC
boiler isolation
valve gS:
0.1 FLA, 120 VAC
or
return valve 0.15 FLA, 24 VAC
burner
connection fA: 4 FLA 120 VAC
connection lÖ:
– 2-stage: 0.5 FLA, 120 VAC
– modulating: 0.1 FLA, 120 VAC
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Total max. 6 A 120 VAC
The motherboard contains:
relays and outputs for activating
the pumps, the control elements
and the burner
plug-in location for power supply
unit board and boiler control section.
The motherboard contains:
plugs for sensors, communication
connections and external equipment
plug-in locations for electronics
board, LON communication module,
Viessmann 2-wire BUS
communication module,
programming unit, boiler coding
card and Optolink board.
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