PV500-27A 07/04
2
VENTURA
®
LOW NOx WATER HEATER
START-UP PROCEDURES
CAUTION: DO NOT RELIGHT PILOT OR START BURNER WITH COMBUSTION
CHAMBER FULL OF GAS VAPOR, OR WITH VERY HOT COMBUSTION CHAMBER.
1. Study the Installation & Maintenance
manual for the burner 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. Follow the enclosed warnings on the
water temperature control when setting
the operating thermostats. The water
heater has three temperature controls.
The top control is the temperature limiting
device and should be set at 200°F. The
lowest control is the operating thermostat
and must be adjusted 10 degrees (10°)
lower then the upper operating control. A
common setting is 130°F for the upper
operating control and 120°F for the
operating thermostat. Your thermostat
settings must take into account your
application. To avoid scalds, follow the
enclosed warnings on water temperature
control when setting the thermostats.
CAUTION: ON MODELS WITH FLUE GAS RECIRCULATION (FGR), THE FGR DUCT
AND PLUMBING WILL BE HOT DURING AND AFTER OPERATION. USE CARE TO
AVOID CONTACT WITH SKIN WHILE MAKING ADJUSTMENTS.
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 on heater decal 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.)
