21
LIGHTING AND OPERATING INSTRUC-
TIONS FOR CMF PO OIL BURNERS
Oil burners in this series are factory equipped
with a primary control capable of either
intermittent or interrupted ignition.
Start-Up Procedure
1.
Open all manual shut-off valves in the oil
supply line from the tank to the burner.
2.
Turn ON the electrical supply to the
furnace.
3.
Set the room thermostat to the desired
temperature.
Air-Bleed Procedure - Single Pipe
Installation
1.
Open the door to the furnace.
2.
Attach 1/4" I.D. plastic tube over the end
of the airbleed valve on the oil pump as
shown in Figure 17. Place the other end
of the tube in a large container.
3.
Pull the door interlock switch out to start
the burner.
4.
Turn the airbleed valve open not more than
1/2 turn to get a fast flow of oil into the
container.
5.
To assure continuous operation, use a
wire to jump terminals T-T (or F-F) on the
primary control while burner is running. If
furnace is equipped with the Honeywell
R7184 primary control, priming oil pump
procedure is as follows:
a.
While the ignition is on, press the
reset button for 1/2 second or less
and release the reset button. The
lockout time will be extended to 4
minutes.
b.
If prime is not established within the
4 minutes, the control will lock out.
Press the reset button to reset the
control and to step “a”.
c.
Repeat steps “a” and “b”, if needed,
until the pump is fully primed.
6.
When oil flow is clear and free of air
bubbles, close air-bleed valve and tighten.
(Time to bleed air out will vary depending
on length of oil line, number of bends, etc.)
7.
Remove the jumper wire on the primary
control.
Oil Burner Shutdown Procedure
Set the room thermostat to “OFF” or its
lowest setting.
Flame Adjustment
1.
Turn the thermostat to a setting below
room temperature to start the furnace.
2.
Allow the furnace to operate for about ten
(10) minutes.
3.
Adjust the air shutter setting until 11% CO2
with a number zero smoke or less is
achieved. Furthermore, the draft over the
fire must be at least negative 0.02 in WC.
The factory set air shutter settings are
shown in Table 5.
Electrode Setting
The electrode setting is carefully set at the
factory. However, during transit, the setting of
the electrodes may become improper. Before
attempting to start the oil burner, check the
positioning of the electrodes to ensure that they
are properly positioned, as shown in Figure 18.
Improperly adjusted electrodes can result in
poor ignition. Do not permit the electrodes to be
closer than ¼” to any grounded surface.
SWITCHING FROM INTERRUPTED TO
INTERMITTENT IGNITION CONTROL
Honeywell oil primary control can be switched
between interrupted and intermittent ignition
control. To switch from interrupted duty (Factory
set) to intermittent duty, remove the ignitor wire
from the blue control wire. Attach the burner
motor and igniter wire to the orange control wire.
Cap and reseal the orange wire. Cap and isolate
the blue control wire. Refer to Figure 13.
FIRING RATE CONVERSION
The rated firing rates of the CMF80 convertible
furnaces (PO & PG) can be adjusted from the
factory setting of 75,000 BTU/hr. The firing rate
can be changed to either 65,000 BTU/hr or to
90,000 BTU/hr using the appropriate certified
NORDYNE conversion kit installed by a
NORDYNE distributor or Service PRO. See the
Replacement Parts Listing for the appropriate
kit number to order.
Summary of Contents for CMF 100-PG
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