3 Troubleshooting (continued)

Gas valve adjustment procedure

If adjustment of the gas valve is deemed necessary, use the following procedures: (Note: The procedures below are model specific.)

CAUTION Under normal operating conditions this 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 CO2 levels or a 1/4 turn clockwise to decrease CO2 levels. After one adjustment on the valve, follow the Combustion Analysis Procedure on page 54 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 3G on page 54 or replace the gas valve.

Figure 3-2Gas Valve Adjustment: Model 1.0

THROTTLE ADJUSTMENT SCREW

Service Manual

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 CO2 levels or a 1/4 turn clockwise to decrease CO2 levels. After one adjustment on the valve, follow the Combustion Analysis Procedure on page 54 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 3G on page 54 or replace the gas valve.

Figure 3-3Gas Valve Adjustment: Models 1.3 - 1.5

THROTTLE ADJUSTMENT

SCREW (REMOVE BLUE COVER)

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Lochinvar service manual Gas valve adjustment procedure, Models 1.3
Page 54 Page 56

1 specifications

Lochinvar 1 is a remarkable achievement in the realm of modern technology and engineering. As a powerful and efficient water heater, it has been designed to cater to a wide range of residential and commercial needs. One of the standout features of Lochinvar 1 is its advanced heating technology, which incorporates a high-efficiency condensing design. This technology allows the unit to achieve impressive energy savings by maximizing heat transfer while minimizing energy consumption.

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