Gas Conversion Kit Manual

6 720 607 679
6
Gas Type Conversion
3 Gas Type Conversion
For models: GWH 2400 ES, GWH 2700 ES, GWH
715 ES, Evolution 500, 830ES, 940ES, 940ESO only.
A. Preparation
B 1. Tools needed:
– Flat and Phillips screwdrivers
– #40 Torx driver
– Digital combustion analyzer
B 2. Shut off gas supply at installer supplied shutoff
valve and unplug the power cord.
B 3. Remove front cover.
B 4. Remove the three screws from the control unit.
Fig. 9
B Pull control unit out and rotate to reveal the back
side.
B Remove the small cover of the control unit.
Fig. 10
B. Converting from LPG to NG
B 1. Add jumper to location JP6 on the control board
(Fig. 11).
Fig. 11 LPG to NG
B 2. Adjust CO
2
(see chapter 3.1).
C. Converting from NG to LPG
B 1. Remove jumper from location JP6 on the control
board (Fig. 12).
Fig. 12 NG to LPG
B 2. Adjust CO
2
(see chapter 3.1).
B 3. Replace small cover on control unit's back and
reinstall control unit in the water heater.
LP AND NG ARE EXTREMELY
FLAMMABLE. TAKE EXTRA
PRECAUTIONS WHEN
PERFORMING ANY WORK TO THE
HEATER.
i
PROCEDURE MUST BE
PERFORMED BY A LICENSED GAS
TECHNICIAN.
6720607679-08.1AL
i
P1 fan speed is automatically ajusted
when is added the jumper, to verify value
see Table 3.
i
P1 fan speed is automatically adjusted
when jumper is removed, to verify value
see Table 3.
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6720607679-07.1AL