Gas Conversion Kit Manual

6 720 607 679

Gas Type Conversion

1 Gas Type Conversion

For models: 250SX, 250SXO, GWH 635 ES, GWH

635 ESO, GWH 2400 E, GWH 2400 EO only

A. Preparation

B 1. Tools needed:

– flat and Phillips screwdrivers

– #40 Torx driver

– digital combustion analyzer

B 2. Turn power switch to off position and unplug water

heater.

B 3. Remove cover.

B 4. Remove control board access cover (Fig. 1).

Fig. 1

B 5. Remove lower wire harness from control board.

B 6. Loosen yellow painted Philips screw and cover

should rotate down revealing a brass slotted screw

(Fig. 2).

Fig. 2

B 7. Remove yellow painted # 40 Torx cover from the

front of the gas valve revealing a plastic #40 Torx

screw (Fig. 3).

Fig. 3

LP AND NG ARE EXTEMELY

FLAMMABLE SO TAKE EXTRA

PRECAUTIONS WHEN

PERFORMING ANY WORK TO THE

HEATER.

PROCEDURE MUST BE

PERFORMED BY A LICENSED GAS

TECHNICIAN.

2 SCREWS

TO REMOVE