Wiring Diagram - Wmb-80/120C Combi Ladder - Weil-McLain Aqua Balance WMB-155 Manual

W
TM
AquaBalance
22 Wiring diagram — WMB-80/120C Combi Ladder
Figure 68 80/120C –– Combi Ladder Wiring Diagram
WMB-
NOTES:
1. All wiring must be installed in
accordance with N.E.C. and
any other national state or local
requirements.
2. Room thermostat should be a
dry contact type and should draw
power from the control board:
should not be greater than 24
VAC and 500 mA.
3. Max. voltage and electric cur-
rent for the LWCO should not
be greater than 120VAC and 3
Amp.
4. In case of questions during
installation please contact your
local Weil-McLain distributor.
Legend
16 Fan
32 Central heating pump
42 DHW temperature sensor
44 Gas valve
72 Room thermostat (not included)
81 Ignition electrode
95 Mixing (diverting) valve
104(1) Fuse 3.15A
104 (1) Fuse 630mA
52
M -
ALL OUNT GAS FIRED WATER BOILER
—
Boiler Manual
cod. 3541M910
114 Water pressure switch
136 Flow meter
138 Outside temperature sensor (optional on Combi)
186 Return temperature sensor
191 Exhaust temperature sensor
278 Double sensor (heating + safety)
279 Transformer 115-24 VAC
284 Relay SPST-Coil 24 VAC
370 LWCO (not included)
373 "OPENTHERM" communication (Not used)
Part number 550-100-305/0118