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WARNING
!
Electrical shock hazard. Turn OFF electrical power
supply at service panel before making electrical
connections. Failure to do so could result in death
or serious injury.
NOTICE
Use copper conductors only.
Electrically bond boiler to ground in accordance with
requirements of authority having jurisdiction. Refer to
National Electrical Code, ANSI/NFPA 70.
Electric Power Supply
Turn OFF electrical power supply at service panel and boiler
before making electrical connections.
• Run 120 volt circuit from separate over current protection
device in electrical service entrance panel, 15 ampere
circuit.
• Service switch is pre-wired and located on exterior boiler
jacket. See Figure 15 for location of service switch,
junction box, and power supply connection points.
• Connect black (hot) lead from power supply to either of
unused brass screws on service switch.
• Connect white (neutral) lead from power supply to white
screw on service switch.
• Connect green (ground) lead from power supply to
ground (green) screw on service switch.
• Receptacle on service switch is powered regardless of
whether switch is on or off, and could be used as power
supply for external condensate pump if one is used.
• Run 14 gauge or heavier copper wire from boiler to
grounded connection in service panel or properly driven
and electrically grounded ground rod.
9 - ELECTRICAL WIRING
Figure 16 - Field Wiring Connection
Service Switch
Junction Box
22
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