Gas Valve Adjustment Procedure - Lochinvar ArmorX2 1.3 Service Manual

3
Troubleshooting

Gas valve adjustment procedure

If adjustment of the gas valve is deemed necessary, use the
following procedures: (Note:
model specific.)
Under normal operating conditions this
CAUTION
valve should not need adjusting.
Model 1.0
Locate the throttle adjustment screw on top of the gas valve,
see FIG. 3-2. Using a screwdriver, turn the screw a 1/4 turn
counterclockwise to increase CO
clockwise to decrease CO levels. After one adjustment on
2
the valve, follow the Combustion Analysis Procedure on
page 49 of this manual to measure the combustion.
If combustion is still not within the specified range,
repeat the procedure. This procedure SHOULD NOT
be performed more than four (4) times. If after four (4)
adjustments and the combustion is still not within the
specified range, revisit the possible causes in Table 3F on
page 49 or replace the gas valve.
Figure 3-2 Gas Valve Adjustment: Model 1.0
THROTTLE ADJUSTMENT SCREW
50
The procedures below are
levels or a 1/4 turn
2
Models 1.3 - 1.5
Locate the throttle adjustment screw on top of the gas valve,
see FIG. 3-3. Using an Allen wrench, turn the screw a 1/4
turn counterclockwise to increase CO
clockwise to decrease CO
2
the valve, follow the Combustion Analysis Procedure on page
49 of this manual to measure the combustion.
If combustion is still not within the specified range, repeat
the procedure. This procedure SHOULD NOT be performed
more than four (4) times. If after four (4) adjustments and
the combustion is still not within the specified range, revisit
the possible causes in Table 3F on page 49 or replace the gas
valve.
Figure 3-3 Gas Valve Adjustment: Models 1.3 - 1.5
Service Manual
levels or a 1/4 turn
2
levels. After one adjustment on
THROTTLE ADJUSTMENT
SCREW (REMOVE BLUE COVER)