OPERATING HEATER
Continued
10.Continue holding down metal core for about 10 seconds and then release the metal core. Pilot should stay lit. If not, repeat steps one through 4, page 17.
11.Turn MAN-Knob to ON position - main gas flows.
12.Turn
TO TURN GAS OFF
TO APPLIANCE
Shutting Off Heater
Press OFF button on remote control to switch off main gas and pilot gas or manually turn
Motor-Knob clockwise 
to the "O" OFF position.
Shutting Off Burner Only (pilot stays lit)
Press to decrease the flame height and shut off main burner.
INSPECTING BURNERS
Check pilot flame pattern and burner flame pat- terns often.
PILOT FLAME PATTERN
Figure 19 shows a correct pilot flame pattern. Figure 20 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. When the thermocouple cools, the heater will shut down.
If pilot flame pattern is incorrect, as shown in Figure 20
•turn heater off (see To Turn Off Gas to Appli- ance, above or page 17)
•see Troubleshooting, page 20
Note: The pilot flame on natural gas units will have a slight curve, but flame should be blue and have no yellow or orange color.
Thermocouple
Thermocouple 
BURNER FLAME PATTERN Figure 21 shows correct burner flame pattern.
NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles are burned by heater, causing brief patches of orange flame.
If burner flame pattern is incorrect, as shown in Figure 22
•turn appliance off (see To Turn Off Gas to Ap- pliance in column 1 or page 17
•see Troubleshooting, page 20
Figure 21 - Correct Burner Flame PatternYellow Tipping
at Top of Blue 
Flame
Figure 22 - Correct Burner Flame Pattern(Natural Gas Pilot Shown)
18 | www.desatech.com |