Lochinvar Knight 80 - 285, Руководство по обслуживанию

Страница: 41 / 44

3
Troubleshooting
(continued)
Service Manual
41
Gas valve adjustment procedure
If adjustment of the gas valve is deemed necessary, use the
following procedure:
Locate the throttle adjustment screw on the side of the
venturi valve (FIG. 6). Using a screwdriver, turn the screw a
1/4 turn counterclockwise to increase CO
2
levels or a 1/4 turn
clockwise to decrease CO
2
levels. After performing one
adjustment on the valve, follow the Combustion Analysis
Procedure on page 40 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 10 on page 40 or replace the gas
valve.
Figure 6 Gas Valve Adjustment