Procom PCNSD18T Manual page 20

5. Push in control knob slightly and turn
counterclockwise
position. Press in control knob for five (5)
seconds.
Note: The first time that the heater is
operated after connecting the gas supply,
the control knob should be pressed for
about thirty (30) seconds. This will allow
air to bleed from the gas system. If pilot
does not stay lit, refer to Troubleshooting,
pages 24 though 27. Also contact a quali-
fied service technician or gas supplier for
repairs. Until repairs are made, light pilot
with match.
• If control knob does not pop up when
released, contact a qualified service
technician or gas supplier for repairs.
6. With control knob pressed in, push
down and release ignitor button. This
will light pilot. The pilot is attached to
the rear of the burner. If needed, keep
pressing ignitor button until pilot lights.
Note: If pilot does not stay lit, refer to
Troubleshooting, pages 24 though 27.
Also contact a qualified service technician
or gas supplier for repairs. Until repairs
are made, light pilot with match. To light
pilot with match, see Manual Lighting
Procedure, page 21.
7. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob.
Note: If pilot goes out, repeat steps 7
through 10. This heater has a safety in-
terlock system. Wait one (1) minute before
lighting pilot again.
Shutting Off Heater
Turn control knob clockwise
OFF position.
20
OPERATION
to the PILOT
TO TURN OFF GAS TO APPLIANCE
to the
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8. Turn control knob counterclockwise
to the ON position. The main burner
should light. Set control knob to the de-
sired heating level.
Note: Please wait one minute after shut-
ting off heater to allow the control valve
to reset before starting again.
CAUTION: Do not try to ad-
just heating levels by using the
equipment shutoff valve.
WARNING: If input gas
type is NG, make sure NG pilot
burner ignites. If input gas type
is LP, make sure LP pilot burner
ignites.
Ignitor
Figure 23 - Ignitor Button and Control
Knob Locations
Ignitor
Natural Gas
Electrode
Burner
Pilot Air
Inlet Hole
(Back of pilot
shown for clarity)
Figure 24 - Pilot Assembly
Shutting Off Burner Only
(pilot stays lit)
Turn control knob clockwise
PILOT position.
Control Knob
Thermocouple
Propane
Gas Burner
Pilot Air Inlet Hole
to the
200239-01C