PLB
Oil Furnaces
–
Furnace Manual
670-000-001/0204
13
6
Wire furnace & burner
Electric shock hazard. Can cause severe personal injury or death if power source, including service switch on furnace, is not
disconnected before installing or servicing.
Wire burner
The burner harness is factory-wired to the furnace at the factory.
Plug the burner harness into the mating burner connector to wire the
burner. Refer to the wiring diagram on pages 14, 15 and 16 for
further information.
Install and wire thermostat
Locate the room thermostat on an interior wall in the natural
circulating path of room air. Do not locate thermostat so it is exposed
to cold air infiltration, drafts from windows or doors, air currents from
supply or return air registers, behind obstructions, on a shelf, in a
closet, or in a corner.
Ensure the thermostat won’t be exposed to heat from nearby
fireplace, radio, television, lamp or rays from the sun. Do not mount
thermostat on a wall over a supply or return duct, chimney or vent.
Connect power wiring
All wiring must conform to :
x
National Electrical Code, ANSI/NFPA 70, latest edition and any
additional national, state or local codes.
x
In Canada, CSA C22.1 Canadian Electrical Code Part One and
any local codes.
x
Wiring must be N.E.C. Class 1. If original wire as supplied with
furnace must be replaced, type 105
o
C wire or equivalent must
be used. Supply wiring to furnace must be sized for the load
required (see section 12).
x
Provide electrical ground at furnace as required by codes.
Connect 120 VAC/60 Hertz, single phase separate electrical line
from the main house panel to the power leads in the external burner
junction box as shown on wiring diagram, pages 14, 15 and 16.
Provide a fused disconnect in the power wiring, following all local
codes.
Ensure the wire size and type are adequate for the electrical load
(see section 12 and furnace nameplate for value).
Limit control
The furnace is equipped with a fan switch/limit control. This control
limits the air leaving the heat exchanger to 200
o
F or less. The fan
switch continues fan operation until the air drops to a preset
temperature. For most installations, set the blower ON setting at
110
o
F and blower OFF setting at 90
o
F. If a longer cool down period
is desired, lower the OFF setting.
WARNING
