Dunkirk Q90-125, Installation, Operation & Maintenance Manual, Page: 16 / 44

16
!
WARNING
Turn off electrical power at fuse box before
making any line voltage connections. Follow
local electrical codes.
All electrical work must conform to local codes as well as
National Electrical Code, ANSI/NFPA-70, latest revision.
In Canada, electrical wiring shall comply with Canadian
Electrical Codes, CSA-C22.1 and .2.
Electric Power Supply
Prior to making any line voltage connections, service switch
at boiler should be in the off position and the power turned
off at the fuse box.
Run a 120 volt circuit from a separate over current
protection device in electrical service entrance panel.
NOTICE
Use copper conductors only
.
This should be 15 ampere circuit. A service switch has
been pre-wired and located on exterior boiler jacket. See
Figure #13 for diagram showing 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 always powered regardless of whether switch is
on or off, and could be used as power supply for external
condensate pump if one is used.
Boiler, when installed, must be electrically grounded in
accordance with the requirements of the authority having
jurisdiction or, in the absence of such requirements, with:
United States - National Electrical Code, ANSI/NFPA 70 •
Canada - Canadian Electrical Code Part I, CSA C22.1, •
Electrical Code.
ELECTRICAL WIRING
Figure 13 - Field Wiring Connection