Honeywell WV4262B Installation Instructions Manual page 7

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 connec-
tions.
3. Stand clear of the burner while lighting to pre-
vent 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.
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 rat-
ing.
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.
WV4262B POWERED DAMPER WATER HEATER CONTROLS
a. Meter Clocking: Convert flow rate to Btuh as
described in form 70-2602, Gas Controls
Handbook, 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.
c. Make sure electrical connections are clean
and tight.
d. Check for cracked ceramic Insulator, which
can cause short to ground, and replace
igniter--sensor if necessary.
e. Check the pilot flame. Make sure it is blue,
steady, and envelops 3/8 to 1/2 in. (10 to 13
mm) of the flame rod.
4. After completing step 3, if any conditions in step
2 above recur, then replace the Control.
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