Oil Furnace Installation Manual
Table Of Contents
506793-02BPage 10 of 16 Issue 1810
Electrical Wiring
All wiring must conform to the National Electrical Code, the
Canadian Electrical Code, and any local codes. Connect
the 115-volt, single phase service to the unit at the
junction box. Use a separate fused branch electrical circuit
containing a properly sized fuse or circuit breaker. Run this
circuit directly from the main switch box to an electrical
disconnect that is readily accessible and located near the
furnace. Follow carefully the wiring diagrams adhered to
the inside of the blower compartment door.
The electrical supply to the mechanical vent system
must be supplied from the appliance. All wiring must be
appropriate Class I wiring. Wiring must be installed in rigid
metal conduit, intermediate metal, or be otherwise suitably
protected from physical damage. Refer to the wiring
diagrams supplied with the venter kit for proper electrical
connections.
Figure 9. Humidier Wiring
Humidifier or
Humidifier
Transformer
HUM N
Some humidifier manufacturers may
require 24V contact supply power
instead of 120V.
This diagram is intended as a general guide only. See the humidier manufacturer’s installation instructions for detailed connection
information.
Figure 10. Electronic Air Cleaner Wiring
EAC N
Electronic
Air Cleaner
Sail Switch
(locate in circulating
air supply)
This diagram is intended as a general guide only. See the electronic air cleaner manufacturer’s installation instructions for detailed
connection information.
Thermostat
Locate the thermostat on an inside wall in a room usually
occupied during the day, such as a living room or dining
room, at a height of 4-1/2” from the oor. Avoid direct
sunlight or supply air from a register. Make sure the location
is not adjacent to appliances such as ovens or lights. Wire
the thermostat with minimum of #18 AWG thermostat wire.
Humidier
A humidier can be installed with this furnace. Terminals
are provided on the control board, which sustains a 120-
volt output to operate a humidier. The “HUM” terminal is
energized whenever the thermostat calls for heat. Refer to
furnace wiring diagram for specic connection information
(see also Figure 9).
Electronic Air Cleaner
An electronic air cleaner can be installed with this furnace.
Terminals are provided on the control board for connection
of a 120-volt electronic air cleaner. The “EAC” terminal is