Inspecting Heater - Procom MNSD2TPA Owner's Operation And Installation Manual

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 23) or service.
WARNING: Only a qualified service person should service and
repair heater. This includes maintenance requiring replacement or
alteration of components.
Figure 24 shows a correct pilot flame pattern.
Figure 25 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 25
• turn heater off (see To Turn Off Gas to Ap-
pliance, page 20)
• see Troubleshooting pages 24 through 27.
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 below.
Figure 26 shows a correct burner flame pat-
tern. Figure 27 shows an incorrect burner
flame pattern. The incorrect burner flame
pattern shows yellow tipping of the flame. It
also shows the flame higher than 1/2 the heat
shield height.
If burner flame pattern is incorrect, as shown
in Figure 27
• turn heater off (see To Turn Off Gas to Ap-
pliance, page 20)
• see Troubleshooting pages 24 through 27.
22

INSPECTING HEATER

PILOT FLAME PATTERN
BURNER FLAME PATTERN
www.usaprocom.com
Notice: Do not mistake orange flames with
yellow tipping. Dirt or other fine particles enter
the heater and burn causing brief patches of
orange flame.
Natural Gas
Shown
NG
3-3.5" WC
Figure 24 - Correct Pilot Flame Pattern
Natural Gas
Shown
NG
3-3.5" WC
Figure 25 - Incorrect Pilot Flame Pattern
Figure 26 - Correct Burner Flame Pattern
Figure 27 - Incorrect Burner Flame
Pattern
LP
8-11" WC
LP
8-11" WC
200218-01A