INSPECTION PROCEDURES

Inspect on the first and third month after initial start- up and then on an annual basis. If problems are found, refer to the Troubleshooting sections of this manual for additional directions.

1.Remove top of heater and inspect heat exchanger for soot and examine venting system.

2.Remove rear header and inspect for scale depos- its.

*3. Inspect pilot and main burner flame and firing rate.

*4. Inspect and operate all controls and gas valve.

*5. Visually inspect system for water leaks.

*6. a. Oil pump motor and bearing assembly, if oil cups are provided.

b.Disconnect pump from header and check condition of pump impeller. Check condition of bearing by attempting to move impeller from side to side. Replace any parts showing wear.

c.Check pump coupler for wear and vibration.

7.Check flow switch paddle.

8.Clean room air intake openings to assure adequate flow of combustion and ventilation air.

CAUTION: Combustion air must not be contaminated by corrosive chemical fumes which can damage the heater and void the warranty.

9.Keep heater area clear and free from combustible materials, gasoline, and other flammable vapors and liquids.

*Should be checked monthly. (Takes approximately 15 minutes).

Fig# 9336

PILOT BURNER FLAME-IID

(atmospheric units)

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Raypak NH, 0133-4001 WH manual Inspection Procedures