Reliant FVIR GAS WATER HEATER Technical Information PDF herunterladen (Seite 23)

MANIFOLD TUBE

TIP

BRACKET

SLOT

CLOSE-UP INSIDE VIEW OF

THE COMBUSTION CHAMBER.

Figure 27

Removing and Replacing the Gas Control

Valve/Thermostat

IMPORTANT: This water heater has a resettable

thermal switch installed. Do not attempt to disable

or modify this feature in any way. Use only factory

authorized replacement parts.

Removing the Gas Valve:

1. Turn off the gas supply to the water heater at the

manual gas shut-off valve. This valve is typically

located beside the water heater. Note the position

of the shut-off valve in the open/on position then

proceed to turn it off.

2. On the lower front of the water heater locate

the gas control valve/thermostat. Before

performing any maintenance, it is important to

turn the temperature dial on the gas control valve/

thermostat to its lowest setting.

3. On top of the gas control valve/thermostat turn the

gas control knob to the “OFF” position. NOTE: On

the White-Rodgers® gas control valve/thermostat

the knob stop must first be depressed before turning

the gas control knob. See Lighting Instructions on

the water heater.

4. Drain the water heater. Refer to the section of

“Draining and Flushing” section and follow the

procedure.

5. Disconnect the piezo igniter wire from the piezo

igniter button. NOTE: There are two types of

igniters. If you have the square igniter, slide the

igniter bracket backwards away from the gas valve

to remove it. If you have the round igniter, first

remove the igniter from the bracket by depressing

front and rear holding tabs and lift. Next remove

igniter bracket from the gas valve. Disconnect

the thermocouple, pilot tube, the two connectors

attached to the thermal switch, and manifold tube

at the gas control valve/thermostat. NOTE: L.P.

gas systems use reverse (left-hand) threads on the

manifold tube.

6. Refer to “Gas Piping” section 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 correctly sized 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

correctly sized pipe into the inlet and use it to

turn the gas valve (clockwise.) DO NOT OVER

TIGHTEN or damage may result. NOTE: Use an

approved

TEFLON

tape or pipe compound only

on the 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. Attach the igniter and bracket to the new gas control

valve/thermostat, clipping it at the back edge of

thermostat and snapping it into place. NOTE: Do not

use the (pilot) ferrule nut supplied with the new gas

control valve/thermostat, unless the existing nut is

not usable. Reconnect the pilot tube, manifold tube,

igniter wire, 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 phone

number on the water heater.

TEFLON

is a registered trademark of E.I. Du Pont De Nemours and Company

REPLACING THE THERMOCOUPLE AND GAS CONTROL VALVE/THERMOSTAT

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