22
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