Freestyle 2 Series - Wiring Diagram - FS- 155 Heating Only Schematic

Part number 550-142-950/0122
61
FreeStyle
®
series 2 wall mount gas-fired water boiler – boiler manual
26 Wiring diagram — FS- 155 Heating Only Schematic
Figure 79 FreeStyle
®
155 Heating Only Schematic Wiring Diagram
Legend
16 Fan
32
Central heating pump (not included)
44
Gas valve
72
Room thermostat (optional)
81
Ignition electrode
104(1)
Fuse 3.15A
104(1)
Fuse 630mA
1
14
W
ater pressure switch
130
DHW Pump (not included)
138 Outdoor sensor
143
DHW tank thermostat (optional)
186
Return temperature sensor
191
Exhaust temperature sensor
278
Double sensor (heating + safety)
279
T
ransformer 115-24 VAC
284
Relay SPST
-Coil 24 VAC
370
L
WCO (not included)
373 “OPENTHERM” communication
(Not used)
Pump Wiring Connections
Terminal #9 : Line Terminal #10 : Neutral Terminal #12 : Line Terminal #13 : Neutral
Only one circulator may be wired to
each connection point. Maximum amp load per pump 3.0 amps.