Raypak 0135A, 0195A, 0090A Adjustments & Replacement Of Components, Gas Valve Replacement

ADJUSTMENTS & REPLACEMENT OF COMPONENTS

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

DANGER: SHOCK HAZARD: Make sure electri- cal power to the heater is disconnected to avoid potential serious injury or damage to components.

Gas Valve Replacement

1.Shut off electrical power and gas supply to the heater.

2.Remove gas piping to gas valve inlet.

3.Disconnect wiring connections, pilot tubing (when equipped).

4.Remove screws (2) holding the burner tray.

5.Slide burner tray out.

6.Remove gas valve bracket screws and bracket.

7.Unscrew gas valve from gas pipe.

8.Reverse above procedure to re-install.

Pilot Burner Cleaning or Replacement (Standing Pilot)

1.Shut off electrical power and gas supply to the heater.

2.Disconnect gas piping to gas valve.

3.Disconnect wiring connections to gas valve.

4.Remove screws (2) holding the burner tray.

5.Slide burner tray out.

6.Remove screw holding pilot lighter tube.

7.Remove screws (2) holding pilot bracket on the burner tray.

8.Disconnect thermocouple and pilot tubing from the gas valve.

9.Remove pilot burner from pilot bracket.

10.Remove pilot orifice and blow away lint or dirt. Clean with wire or small brush.

NOTE: Make sure pilot orifice is clear, but do not enlarge the hole.

11. Reverse above procedure to re-install.

HONEYWELL PILOT ROBERTSHAW PILOT

PILOTPILOT

AIR

OPENING

ORIFICE

ORIFICE

Fig. 20: Pilots

Flame Roll-out Switch

Replacement

1.Shut off electrical power to the heater.

2.Remove wiring connections to switch.

3.Remove screws (2) holding the switch.

4.Reverse above procedure to re-install.

Vent Thermal Switch

Replacement

1.Shut off electrical power to the heater.

2.Remove wiring connections to switch.

3.Remove the screws (2).

4.Reverse above procedure to re-install.

Ignition Module Replacement

1.Shut off electrical power to the heater.

2.Remove control cover screws and open control compartment.

3.Disconnect wiring connections to module.

4.Remove screws (2) holding module.

5.Reverse above procedure to re-install.

Transformer Replacement

1.Shut off electrical power to the heater.

2.Remove control cover screws and open control compartment.

3.Disconnect wiring connections from transformer leads.

4.Remove screws (2) holding transformer.

5.Reverse above procedure to re-install.

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