Thermostat Wiring - Weil-McLain UltraOil Manual

water boiler
Connect wiring
Circulator
• The circulator is shipped with the boiler, but not
installed or wired.
• Wire the circulator to the boiler terminal strip as
shown on the boiler wiring diagram. Provide hot,
neutral and ground wires, routed in metal con-
duit.

Thermostat wiring

• Install thermostat on inside wall away from influ-
ences of drafts, hot or cold water pipes, lighting
fixtures, televisions, sun rays or fireplaces.
• Follow instructions with thermostat.
• If the thermostat has a heat anticipator, set the heat
anticipator per the limit control manufacturer's
recommendation.
Burner wiring (see Figure 14)
• The burner harnesses incorporate disconnect plugs,
providing a convenient way to disconnect wiring
when burner mounting door is opened.
Optional AFM installation
• See separate AFM instructions when used.
When wiring is completed:
• Reinstall the Control Pod cover, close cover and
tighten the retainer screw.
• Replace jacket top and secure with screws.
Part number 550-141-986/1005
— Boiler Manual
(continued)
Failure to disconnect the burner wiring har-
nesses before opening the burner door can
cause damage to the burner and boiler wir-
ing.
Figure 14 Burner harness and EnviraCOM
®
19