OPERATING HEATER
Blue Flame
Continued
THERMOSTATIC "ROOM" FUNCTION
Thermocouple
Pilot Burner
Setting Desired Room Temperature This remote control system can be thermostati- cally controlled when the remote control is in the thermostatic mode. The word ROOM must be displayed on the screen.
1.Press MODE button on remote control until ROOM appears. This sets the remote to the thermostat mode.
2.Press and hold the SET button until the desired temperature is displayed. The numbers will increase from 45° to 99° then restart over at 45°. After releasing the SET button, the set room temperature will dis- play for 3 seconds, then default to display the room temperature.
Changing Set Temperature
1.Follow step two under Setting Desired Room Temperature above.
2.Press the MODE button to disengage the thermo mode. The word ROOM does not display when thermostatic mode is not in operation.
INSPECTING HEATER
Check pilot flame pattern and burner flame pat- tern often.
PILOT FLAME PATTERN
Figure 20 shows a correct pilot flame pattern. Figure 21 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.
If pilot flame pattern is incorrect, as shown in Figure 21
•turn heater off (see To Turn Off Gas to Appliance, page 14)
•see Troubleshooting, page 17
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.
Figure 20 - Correct Pilot Flame Pattern | |
| Yellow Flame |
Thermocouple | Pilot Burner |
| |
Figure 21 - Incorrect Pilot Flame Pattern | |
BURNER FLAME PATTERN | |
Figure 22 shows a correct and incorrect burner flame | |
pattern. If burner flame pattern is incorrect | |
•turn heater off (see To Turn Off Gas to Appli- ance, page 14)
•see Troubleshooting, page 17
Correct | Incorrect |
Flame | Flame |
Pattern | Pattern |
Figure 22 - Burner Operation
www.desatech.com | 15 |
