Vanguard Managed Solutions PRVYS18PWA Inspecting Burners, Thermostat Control Operation

OWNER’S MANUAL

OPERATING

HEATER

Continued

4.Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety in- formation on page 16. If you don’t smell gas, go to the next step.

5.Turn control knob counterclockwise

C-clockwiseto the PILOT position.

Press in control knob for five (5) sec- onds (see Figure 24, page 16 ).

Note: You may be running this heater for the first time after hook- ing up to gas supply. If so, the con- trol knob may need to be pressed in for 30 seconds or less. This will allow air to bleed from the gas system.

•If control knob does not pop out when released, contact a qualified service person or gas supplier for repairs.

6.With control knob pressed in, press and release ignitor button. This will light pilot. The pilot is attached to the front burner. If needed, keep press- ing ignitor button until pilot lights.

Note: If pilot does not stay lit, con- tact a qualified service person or gas supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see Manual Light- ing Procedure.

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

Note: If pilot goes out, repeat steps 3 through 7. This heater has a safety interlock system. Wait one (1) minute for system to reset before lighting pilot again.

Ignitor	Thermocouple
	Pilot Burner
Electrode

Figure 25 - Pilot

(Note: Appearance of pilot assembly may vary by model.)

8.Turn control knob counterclockwise

C-clockwiseto desired heating level. The burners should light. Set control knob to any heat level between HI and LO.

CAUTION: Do not try to adjust heating levels by using the manual shutoff valve.

TO TURN OFF GAS

TO APPLIANCE

Shutting Off Heater

Turn control knob clockwise Clockwise to the OFF position.

Shutting Off Burners Only (pilot stays lit)

Turn control knob clockwise Clockwise to the PILOT position.

THERMOSTAT CONTROL

OPERATION

(Thermostat-Controlled Models

Only)

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 burner to remain fully on, without modulating down in most cases.

MANUAL LIGHTING

PROCEDURE

1.Follow steps 1 through 5 under Light- ing Instructions, page 16.

2.Depress 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. Now follow step 8 above.

INSPECTING

BURNERS

Check pilot flame pattern and burner flame patterns often.

PILOT FLAME PATTERN

Figure 26 shows a correct pilot flame pat- tern. Figure 27 shows an incorrect pilot flame pattern. (Note: Appearance of pilot assembly may vary by model.) The incor- rect pilot flame is not touching the thermo- couple. 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 27

•turn heater off (see To Turn Off Gas to Appliance, manually controlled models, page 16. Thermostatically controlled models, this page, column 2).

•seeTroubleshooting, pages 18 through 20.

Pilot Burner

Thermocouple

Figure 26 - Correct Pilot Flame Pattern

Pilot Burner

Thermocouple

Figure 27 - Incorrect Pilot Flame Pattern

MAIN BURNER

Periodically inspect all burner flame holes with the heater running. All slotted burner flame holes should be open with yellow flame present. All round burner flame holes should be open with a small blue flame present. Some burner flame holes may be- come blocked by debris or rust, with no flame present. If so, turn off heater and let cool. Either remove blockage or replace burner. Blocked burner flame holes will create soot.

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