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POWER VT®WATER HEATER
START-UP PROCEDURES
. CAUTION: DO NOT RELIGHT PILOT OR START BURNER WITH COMBUSTION
CHAMBER FULL OF GAS OR WITH VERT HOT COMBUSTION CHAMBER.
WARNINGI
YOU MUST CONNECT THE SUPPLIED GAS TRAIN TO THE BURNER UNION.
THE GAS SUPPLY MUST THEN BE CONNECTED TO THE GAS TRAIN. DO
NOT CONNECT THE GAS SUPPLY DIRECTLY TO THIS UNION.
FAILURE TO INSTALL THE SUPPLIED GAS TRAIN TO THE BURNER UNION
BEFORE
CONNECTING
THE
GAS
SUPPLY
MAY
RESULT
IN
UNCONTROLLED
GAS
FLOW
INTO
THE
APPLIANCE
AND/OR THE
APPLIANCE AREA.
FAILURE TO FOLLOW THIS WARNING COULD RESULT IN FIRE OR
EXPLOSION CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR
DEATH.
1.
The Power
VT
gas valve and control train (gas
train) provided with the appliance must be directly
connected to the union piped out of the )urner.
After the gas train is attached to the burner, the
gas supply can be connected to the gas !,hut-off
valve (gas cock) at the gas train inlet. After gas
plumbing is complete, verify the gas train is
adequately supported and connect the conduit
and multipin plug into the multipin receptacle in
the gas train conduit box.
2.
Carefully study the burner start-up information
included in this manual.
.
3. 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.
4.
The temperature limiting safety device is fixed at
200°F.
The operating thermostat is set at the
factory to
120°F.
Adjustment may be made by
turning the thermostat dial to the desired
temperature.
CAUTION: CONDUCT THE FOLLOWING GAS TRAIN LEAKAGE TEST BEFORE START-
UP, AT ANNUAL INTERVALS AND PRIOR TO INVESTIGATING THE CAUSE OF ANY
REPORTED OCCIJRENCES 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 the 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.
WC.), and tightly close the gas train manual
shutoff valve closest to the 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 (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.
PV500·19 04·2005
10
Section 19
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