Additional information
109
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
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
Relay outputs at 120 V~ for
control
output
sÖ
:
2 FLA, 120 VAC
*1
circulation pump
for heating the
DHW tank
sA
: 2 FLA, 120 VAC
*1
shunt pump or
boiler circuit
pump
sL
:
2 FLA, 120 VAC
*1
central fault
indicator
gÖ
:
2 FLA, 120 VAC
*1
boiler isolation
valve
gS
:
0.1 FLA, 120 VAC
*1
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
*
1
Total max. 6 A 120 VAC
System Components
Line voltage motherboard, Part No. 7165 792
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.
Low-voltage motherboard, Part No. 7820 290
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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3
5
1
3
3
8
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