Procom SL250TYLA-D Operating Heater, Continued, Thermostat Control Operation, Inspecting Burners

THERMOSTAT CONTROL OPERATION

The thermostat control knob can be set to any comfort level between HI and LO. The thermostat will gradually modulate the heat output and flame height from higher to lower settings, or pilot, in order to maintain the comfort level you select. The ideal comfort setting will vary by household depending upon the amount of space to be heated, the output of the central heating system, etc.

Note: Selecting the HI setting with the control knob will cause the burners to remain fully on, without modulating down in most cases. The LO and HI setting has temperature range of ap- proximately 55 F(12.78 C) to 90 F(32. 22C),respectively.This is the tempera- ture at the hydraulic thermostat bulb not the room temperature.The owner is ad- vised to determine the particular heat setting that is desired for comfort, as heating requirements are different for every owner.

Attention:If the owner does not want the main burner to ignite and turns the gas control knob to the LO setting, the main burner will still ignite if the temperature at the hydraulic thermo- stat bulb drops to 55 F(12.78 C).

If no heat is desired,turn the gas cntrol knob to the PILOT position.

Main Burner Operation Description of Gas Control Knob: OFF position.

PILOT position.

LO/HI will allow the hydraulic thermo- stat bulb to cycle the heater ON and OFF.

MANUAL LIGHTING

PROCEDURE

1.Follow steps 4 through 8 under Lighting Instructions, page 9.

2. Press control knob and light pilot with match.

3.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob.

OPERATING HEATER

Continued

INSPECTING BURNERS

C h e c k p i l o t f l a m e p a t t e r n a n d burner flame patterns often.

PILOT FLAME PATTERN

Figure 13 shows a correct pilot flame pattern. Figure 14 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple.This will cause the thermocouple to cool. When the ther- mocouple cools, the heater will shut down. If pilot flame pattern is incorrect, as shown in Figure 14:

turn heater off (see To Turn Off Gas to Appliance, page 9)

see Troubleshooting (pages 12 through 13).

BURNER FLAME PATTERN

Figure 15 shows a correct burner flame pattern. Figure 16 shows an incorrect burner flame pattern. If burner flame pattern is

incorrect:
turn heater off (see To Turn Off	Gas
to Appliance, page 9)
see Troubleshooting, pages	12
through 13

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