MPI Technologies FCX - Manual (Page 17)

  
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The hole in the right rear of the unit is a large flat
oval. Mount a Listed 2 x 4 inch, "HandiBox" type
junction box over the oval hole in such manner that
part of the hole is left open. When installing the junc-
tion box, center the box vertically over the oval hole
by using the center knockout in the box. Install a ½
inch trade size cable connector or insulating
bushing in the knockout. Secure the box with screws
as required.
The open part of the oval hole can be either above
or below the junction box depending upon the choi-
ce of wire routing. The Class 2 control circuit leads
will exit the open part of the hole.
Route the factory supplied main power pigtail leads
through the connector from inside the unit and secu-
re the connector clamp on the wires.
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.
Route the factory supplied control circuit pigtail
leads through the open part of the oval hole from in-
side the unit. Connect the room thermostat wires to
the control circuit pigtail leads using a suitable
Class 2 wiring connection method.
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