resideo WV4460E Instructions D'installation page 7

Perform Gas Leak Test
WARNING
Fire or Explosion Hazard
Can cause severe injury, death, or property
damage.
Check for gas leaks with soap and water solution
any time work is done on a gas system.
CAUTION
Water Damage Hazard.
Can damage electrical components in the
WV4460E.
Do not spray soap and water solution on the
housing. Do not use an excessive amount of soap
and water to perform the gas leak test.
Gas Leak Test
1. Paint pipe connections upstream of the water
heater control with rich soap and water solution.
Bubbles indicate a gas leak.
2. If a leak is detected, tighten the pipe connections.
3. Stand clear of the burner while lighting to prevent
injury caused from hidden leaks that could cause
flashback in the appliance vestibule.
4. With the burner in operation, paint the pipe joints
(including adapters) and the control inlet and outlet
with rich soap and water solution.
5. If another leak is detected, tighten the adapter
screws, joints, and pipe connections.
6. Replace the part if a leak cannot be stopped.
WV4460E POWER VENT WATER HEATER CONTROLS
Perform Gas Input and Burner
Ignition Check and Adjustment
WARNING
Fire or Explosion Hazard
Can cause severe injury, death, or property
damage.
Follow these warnings exactly:
1. Do not exceed input rating stamped on
appliance nameplate, or manufacturers
recommended burner orifice pressure for size
orifice(s) used. Follow instructions of
appliance manufacturer.
2. IF CHECKING GAS INPUT BY CLOCKING GAS
METER: Make certain there is no gas flow
through the meter other than to the appliance
being checked. Other appliances must remain
off with the pilots extinguished (or that
consumption must be deducted from the meter
reading). Convert flow rate to Btuh as
described in form 70-2602, Gas Controls
Handbook, and compare to Btuh input rating
on appliance nameplate.
3. IF CHECKING GAS INPUT WITH MANOMETER:
Make sure the manual gas shutoff switch is in
the OFF position before removing outlet
pressure tap plug to connect manometer
(pressure gauge). Also move the manual gas
shutoff switch to the OFF position when
removing the gauge and replacing the plug.
Repeat Gas Leak Test at plug with main burner
operating.
Refer to the OS label on the Control for the
pressure reading, which should match the
manometer reading.
Gas Input and Burner Ignition Check
and Adjustment
1. Check the full rate manifold pressure listed on the
appliance nameplate. Water heater control full rate
outlet pressure should match this rating.
2. With burner operating, check the water heater
control flow rate using the meter clocking method
or check pressure using a manometer connected
to the outlet pressure tap on the water heater
control.
a. Meter Clocking: Convert flow rate to Btuh as
described in form 70-2602, Gas Controls Hand-
book, and compare to Btuh input rating on
appliance nameplate.
b. Manometer: Refer to the OS label on the Control
for the pressure reading, which should match
the manometer reading.
Perform Flame Current Check
1. Turn the temperature control knob to call for heat.
2. Observe the pilot burner during the ignition
sequence and see if:
a. Ignition spark continues after the pilot is lit.
b. The pilot lights and the spark stops, but main
burner does not light
c. The pilot lights, the spark stops, and main
burner light, but the system locks out.
3. If so, ensure adequate flame current as follows:
a. Turn off water heater at circuit breaker or fuse
box.
b. Clean the flame rod with emery cloth.
7 69-1872EF—03