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1. Vent stack *
2. Draft diverter (hood)
3. Flue damper (on some models)
4. Temperature limiting device
(set at 200°F)
5. Upper operating thermostat
(set at 130°F)
6. Operating thermostat
(set at 120°F)
CAUTION: TEMPERATURES HIGHER THAN 125°F INCREASE THE RISK OF SCALD INJURY!
IMPORTANT: Clearances to unprotected combustible material must be 8" minimum at top, sides and rear, and 24" in front.
Clearances for servicing and inspection must be 18" minimum at sides and rear and 24" minimum in front.
PV500-2 06/10
PVI ATMOSPHERIC GAS WATER HEATERS
TYPICAL CONSTRUCTION
MANUFACTURED AFTER JANUARY 1, 1994
Figure 2-1
7. Control switch(es) and fuse(s)
8. Gas valve
9. Pilot line
10. Drip leg *
11. Gas supply line *
12. Handhole cleanout
1
(* Not furnished by PVI)
Section 2
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Summary of Contents for PVI Industries PV500-2
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Page 1: Typical Construction
IMPORTANT: Clearances to unprotected combustible material must be 8" minimum at top, sides and rear, and 24" in front. Clearances for servicing and inspection must be 18" minimum at sides and rear and 24" minimum in front. PV500-2 06/10 TYPICAL CONSTRUCTION... -
Page 2: For Your Safety
A fused disconnect switch should be used for the water heater control. 120V, 1ph, 60 Hz service wiring is brought to the terminal block in the lower part of the enclosure on the water heater. See Figures 2- 2, 2-3 and 2-4. FOR YOUR SAFETY USE ONLY COPPER WIRE OF PROPER SIZING FOR INCOMING SERVICE. - Page 3 Study the information carefully and follow the manufacturer's recommendations. 2. Fill the water heater tank with water. Open the relief valve or a nearby hot water faucet to allow air in the tank to escape. Be sure all connections into the tank are tight as leaks at tank fittings will damage the insulation.
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Page 4: Water Heater Start-Up
(See Figure 2-5.) Most gas valves have pressure taps for this purpose. Adjust gas pressure to the value shown on rating plate of the water heater. 3. Drill ¼" diameter hole in vent about 12" above draft diverter. Insert draft gauge in drilled ¼" hole. Draft in vent should be -.02"... - Page 5 D. CO reading (step 4) ______% (less than .02%) E. CO reading (step 5) __________% (6-8%) F. Vent gas temperature (step 6) Gross__________________F. Less Ambient____________°F. Net____________________°F. G. Micro-amps reading (step 7)______________. PV500-2 06/10 COMBINATION GAS VALVE Figure 2-5 MICRO-AMP METER HOOK-UP Figure 2-6 Section 2...
- Page 6 The frequency of inspections should be determined by the rate of scale buildup. We recommend 30-60 day intervals. PV500-2 06/10 MAINTENANCE AND SAFETY INSPECTIONS Periodic Inspection of Operational Components Periodic inspections and check-out of the burner...
- Page 7 Turn off all power and fuel supplies. b. Drain and flush tank as previously discussed. PV500-2 06/10 c. Tag power switch(es) indicating that fuel is off and tank is empty. d. To restart, refill tank with water and turn fuel and power switch(es) on.
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