59
Rev. 05/2020
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 14/3 electrical wire.
2) The 14/3 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.
6) The red wire is used as a 120v signal back to the house that the Heatmor is in an
Over-Temp situation.
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 hole in the
housing corner and route up the back into the
supply junction box.
3) The Black wire is connected to the Mains Line. The White
wire is connected to Mains Neutral. The Red wire is
optionally conected to a circuit to dump heat or alert in an
overheat condition. The Green wire is connected to the
Earth Ground.
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
1) Keep the junction box clean and dry.
2) Keep the cover plate firmly attached at all times.
3) Make certain the MARR connectors (wire nuts) are properly installed and holding
tight.
Electrical Supply Junction Box
CHAPTER 18