57
eLectricaL
Principles
The HEATMOR
TM
furnace comes with all internal components pre-wired. Provision is made for easy
attachment of the main electrical power supply to the HEATMOR™ controls. Electrical outlets at the rear of the
HEATMOR™ accommodate plugging in circulating pumps.
Electrical Supply
have a licensed electrician make all electrical connections.
Required electrical power supply to the HEATMOR™ is 115 volts, 60HZ, 1 phase.
1) Use only 12/3 electrical wire.
2) The 12/3 wire will actually contain 4 wires; a) black, b) white, c) red, d) ground
3) If the electrical wire is being buried in the trench, be certain to use electrical wire approved for direct
burial.
4) Do not place electrical wire in close contact with the supply and return lines.
5) The electrical supply wire should be connected to it’s own circuit.
Electrical Supply Junction Box
Principles
The electrical components of the HEATMOR™ furnace are pre-wired at
the factory. All the wiring becomes centralized in the junction box.
Connecting the main power supply to the HEATMOR™:
1) Remove the plate on the Electrical Supply Junction Box.
2) Insert the electrical supply wire through the electrical connector
on the electrical supply junction box.
3) Basically, the black wires are connected, the white wires
are connected, the ground wires are connected, and the red wires
are connected.
4) Tighten the screw clamp in the electrical connector to hold the
supply wire firm.
5) Replace the plate on the Electrical Supply Junction Box.
Maintenance
• Keep the junction box clean and dry.
• Keep the cover plate firmly attached at all times.
• Make certain the MARR connectors (wire nuts) are properly installed and holding tight.
nOte
: There is also a low voltage box. This box is for maintenance of the low water switch and the
temperature probe.
chaPter 16
Electrical Supply Junction Box
