What to do when your oil fur
nace fails to start
1. Raise your thermostat to 5
°C (10°F) above the present
room temperature.
2. Make sure your burner switch is in “on” position.
3. Check the fuse box for blown fuses. Replace with
fuses of correct amperage.
4. Press the reset button on relay box, once only. Box is
located on burner.
5. If you hear a hum from the burner, and the motor has
not started, press the button on the oil burner motor.
If oil burner fails to start or runs only for a few seconds,
call a reputable serviceman.
Caution:
Never start oil bur
ner under the following conditions:
1. If excess oil has accumulated in the combustion
chamber.
2. If furnace is full of vapour
3. If combustion chamber is very hot.
4. Do not throw lighted paper into combustion chamber
when motor is running but oil is not burning.
Pr
ocedure for checking the proper function of
the limit safety control
This pr
ocedure is CSA requirement and must be carried
out by service man:
1. Once each heating season.
2. After an extreme wood fire.
3. After the unit has been used in gravity conditions
(without electrical power).
The objective of this procedure is to temporarily over
heat the furnace to prove the limit control is operational.
a) Fire the furnace with oil. Wait until the circulating air
blower is running. Move drapes or furniture that may
be damages by heat away from the warm air registers.
b) Adjust the oil thermostat to its highest setting in order
to keep the burner operating.
c) Insert a duct thermometer to its highest warm air duct
at a point 12 inches downstream from the furnace
plenum. If the limit control is functioning correctly the
burner will shut off on high limit before the thermome-
ter reads 200°F.
d) To begin the test, close all the warm air registers then
block the cold air returns with newspapers.
e) Watch the oil burner and note the temperature of the
warm air when the burner shuts down.
Caution:
If the warm air temperatur
e exceeds 200°F without the oil
burner shutting down quickly open the warm air registers
and remove the blockage from the cold air return.
If test procedure did not end with the oil burner cutting
off, the limit control is defective.
If the limit control is defective immediately replace it with
one of the following:
Honeywell - L4064J,11” insertion, limit setting 210°F,
positive stop.
White Rodgers - 5D51- 78, 11” insertion, limit setting
205°F, positive stop.
W
arning
- If the limit contr
ol is defective the furnace is
unsafe to operate.
Maintenance
Ashes never should be allowed to accumulate in the ash
pit so they in any way impede the flow of combustion air
to the fire. Excess ash accumulation can cause the fire to
go out.
Safety
Whenever a loading door is opened, it always should be
cracked slightly before full opening to allow oxygen to
enter and burn any combustible gases that are present.
Failure to do this could result in sudden ignition of the
unburned gases when the door is opened.
