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PV500-17 05-2000 Section 17
2
START-UP PROCEDURES
CAUTION: DO NOT RELIGHT PILOT OR START BURNER WITH COMBUSTION
CHAMBER FULL OF GAS OR OIL VAPOR, OR WITH VERY HOT
COMBUSTION CHAMBER.
1. Study the burner start-up information
included in this manual carefully.
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.
3. The top thermostat is a temperature
limiting safety device set at 200°F. The
thermostats are set at the factory at 130°F
on the upper operating thermostat and
120°F on the lower operating thermostat.
Adjustment may be made by turning the
thermostat dial to the desired temperature.
CAUTION: TEMPERATURES HIGHER THAN 130?F INCREASE THE RISK OF
SCALD INJURY.
CAUTION: CONDUCT THE FOLLOWING GAS TRAIN LEAKAGE TEST BEFORE
START-UP, ANNUAL INTERVALS AND PRIOR TO INVESTIGATING THE
CAUSE OF ANY REPORTED OCCURRENCES OF DELAYED IGNITION.
1. Using an appropriate bubble detection
solution, thoroughly coat all gas train pipe
connections. If any bubbles are detected,
the leaking connection must be tightened,
recoated and rechecked to assure
stoppage of the leak.
2. Attach a manometer, to measure gas
pressure, at the manual gas shutoff valve
located just upstream of the gas train.
Adjust gas train inlet pressure to the
specified value (e.g. 14 in. W.C.), and
tightly close the gas train manual shutoff
valve closest to burner.
3. Reattach the manometer to the gas
train manual shutoff valve at the burner
and record the measured gas pressure in
inches of water column (in W.C.). Measure
gas pressure again after 15 minutes. If gas
pressure has increased 0.5" W.C. or more,
the gas leak must be isolated to one or
more of the operating gas valves, for
example, a solenoid actuated gas shutoff
valve. After any leaking valve is replaced,
the reassembled gas train must be leak
tested again before start-up is attempted.
(NOTE: All gas valves removed because of
suspected leakage must be returned to PVI
Customer Service for disposition.)