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Electrical power and control connections are made
to pigtail leads that exit through holes (2 et 4, fig. 28)
in the right rear of the unit (facing the front of the
unit).
The power connections must be made in a Listed
junction box that is not provided with the unit. All wi-
ring should conform to the National Electrical Code
and any applicable local codes and standards. To
minimize the likelihood of a heating system shu-
tdown caused by an unrelated electrical circuit fault,
the unit and any related electrical components
should be connected to a separate branch circuit
specifically dedicated for that purpose.
The control circuit connections can be in-air splices
made to pigtail leads provided. Control circuit
connections must be NEC Class 2, intended for
connection to a typical room thermostat.
There are three 7/8" holes in the right rear of the
Fig. 28
1) Junction box
2) Main electrical supply cable
3) Back of the unit
4) Room thermostat cable
31.1) Opening for passage of main electrical supply cable
31.2) Opening for passage of room thermostat cable
3
31.1
1
2
unit. Mount a Listed 2 x 4 inch, "HandiBox" type
junction box (1, fig. 28) vertically over the hole (31.1)
in such manner that the hole (31.2) is open. When
installing the junction box, center the box vertically
over the hole (31.1) by using the center knockout in
the box. Install a 1/2-inch trade size cable connector
or insulating bushing through the hole in the unit and
through the knockout in the box. Secure the box with
screws as required.
Connect the main electrical supply cable (2, fig. 28)
to the connector into the junction box and secure the
connector clamp on the wires (Use a listed connec-
tor).
Install a second cable or conduit connector in ano-
ther knockout in the box for the power wiring system
as required. Connect the power wires and groun-
ding conductors to the pigtail leads in the box using
Listed wire connectors and install a cover.
31.2
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INSTALLATION
4
31
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