Fvir System Operational Checklist - Kenmore 153.337021 Use & Care Manual

5. Disconnect the wire harness, flammable vapor sensor
wires, and igniter wire from the gas control valve/thermostat.
Disconnect pilot tube (7/16" wrench) and manifold tube (3/4"
wrench) at the gas control valve/thermostat (Figure 34).
NOTE: L.P. Gas systems use reverse (left-hand) threads on
the manifold tube
6. Refer to "Gas Piping" section (Figure 12) and disconnect
the ground joint union in the gas piping. Disconnect the
remaining pipe from the gas control valve/thermostat.
7. To remove the gas control valve/thermostat, thread a
4" section of pipe into the inlet and use it to turn the gas
control valve/thermostat (counterclockwise.) Do not use
pipe wrench or equivalent to grip body. Damage may
result, causing leaks. Do not insert any sharp objects into
the inlet or outlet connections.
Damage to the gas control valve/thermostat may result.
Replacing the Gas Valve:
1. To replace the gas control valve/thermostat, reassemble
in reverse order. When replacing the gas control valve/
thermostat, thread a 4" section of pipe into the inlet and use
it to turn the gas control valve/thermostat (clockwise.) DO
NOT OVER TIGHTEN or damage may result. NOTE: Use
an approved
TEFLON ®
threaded section of the gas control valve/thermostat that
screws into the tank.
2. Reconnect the gas piping to the gas control valve/
thermostat. NOTE: Use an approved Teflon tape or pipe
compound on the gas piping connections.
3. Do not use the (pilot) ferrule nut supplied with the new
gas control valve/thermostat, unless the existing nut is not
usable. Reconnect the manifold tube, pilot tube, igniter wire,
tape or pipe compound only on the
wiring harness, and thermal switch wires. NOTE: L.P. gas
systems use reverse (left-hand) threads on the manifold
tube.
4. Fill the tank completely with water. NOTE: To purge the
lines of any excess air, keep the hot water faucet open for
3 minutes after a constant flow of water is obtained.
5. Turn on the gas supply and test the gas supply connections
by brushing on an approved noncorrosive leak detection
solution. Bubbles forming indicate a leak. Correct any leak
found.
6. Check the operation of the burner by following the lighting
instructions on the front of the water heater. With the
burner lit, check the gas control valve/thermostat supply
line, manifold tube and pilot tube connections for leaks.
7. Verify proper operation and then replace the outer door.
8. If additional information is required, contact Residential
Technical Assistance by referencing the number on the water
heater.
TEFLON is a registered trademark of E.I. Du Pont De Nemours
®
and Company.

FVIR System Operational Checklist

1. Manifold gasket properly sealed.
2. Viewport not damaged or cracked.
3. Flame-arrestor free of debris and undamaged.
4. Manifold component block properly installed.
5. No leaks at pilot and manifold connection.
6. Manifold door screws securely tightened.
7. Depress the button on the thermal switch.
34