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Shutting Off Heater
1. Turn control knob clockwise
OFF position.
2. Turn off all electric power to the appliance
if service is to be performed.
1. Remove lower front panel.
2. Follow steps 1 through 5 under Lighting
Instructions, page 16 or 17.
3. With control knob pressed in, strike match.
Hold match to pilot until pilot lights.
4. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob. Follow step 8 under
Lighting Instructions, page 16 or 17.
5. Replace lower front panel.
IMPORTANT: Owner's should check pilot flame pattern and burner flame pattern often.
Incorrect flame patterns indicate the need for cleaning (see Care and Maintenance,
page 19) or service.
WARNING: Only a qualified service person should service and
repair heater. This includes maintenance requiring replacement or
alteration of components.
Figure 22 shows a correct pilot flame pattern.
Figure 23 shows an incorrect pilot flame pat-
tern. The incorrect pilot flame is not touching
the thermocouple. This will cause the ther-
mocouple to cool, which shuts the heater off.
If pilot flame pattern is incorrect, as shown
in Figure 23
• turn heater off (see To Turn Off Gas to Ap-
pliance, page 17 or 18)
• see Troubleshooting pages 20 through 24.
Natural Gas
Shown
NG
3-3.5" WC
Figure 22 - Correct Pilot Flame Pattern
18
OPERATION
TO TURN OFF GAS TO APPLIANCE
to the
MANUAL LIGHTING PROCEDURE
(ALL MODELS)
INSPECTING HEATER
PILOT FLAME PATTERN
LP
8-11" WC
www.usaprocom.com
Shutting off burner only
(pilot stays lit)
Turn control knob clockwise
PILOT position.
Ignitor
Natural Gas
Electrode
Burner
Pilot Air
Inlet Hole
Figure 21 - PIlot Assembly
WARNING: If yellow tipping
occurs, your heater could pro-
duce increased levels of carbon
monoxide. If the burner flame
pattern shows yellow tipping,
follow instructions at bottom of
this page.
Natural Gas
Shown
NG
3-3.5" WC
Figure 23 - Incorrect Pilot Flame Pattern
to the
Thermocouple
Propane/LP
Gas Burner
Pilot Air Inlet Hole
LP
8-11" WC
200233-01B
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Table of Contents
Need help?
Do you have a question about the MNSD300HGA and is the answer not in the manual?
Questions and answers
I cant get the pilot light to light I followed the instructions correctly ??
To troubleshoot the pilot light issue on a Procom MNSD300HGA:
1. Check Gas Supply – Ensure the equipment shutoff valve is fully open.
2. Follow Lighting Instructions – Turn the control knob to OFF, wait five minutes, then try lighting the pilot again by pressing the ignitor button.
3. Manual Lighting – If the ignitor does not work, light the pilot with a match following the Manual Lighting Procedure (page 18).
4. Hold Control Knob – After lighting, keep the control knob pressed for 30 seconds.
5. Check Gas Pressure – If the pilot does not stay lit, gas pressure may be too low. Contact your gas supplier.
6. Consult Troubleshooting Guide – Refer to pages 20-24 for additional troubleshooting steps.
7. Seek Professional Help – If the issue persists, contact a qualified service technician or gas supplier for repairs.
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