supply pressure and adjust to ensure a supply pressure between 4.0 and 10.5 inches water column natural gas (13.0" w.c. for propane) while the appliance is firing at 100% of rated input.

7.This is a reference pressure only and is not field adjustable. An appliance supplied with a minimum of 4 inches water column of gas supply pressure will operate at the correct manifold pressure as the burner input varies with temperature demand.

8.Close the two gas pressure test cocks on the pressure test tree and remove the hoses to the manometer.

9.Close the front control panel.

IMPORTANT

Upon completion of any testing on the gas system, leak test all gas connections with a soap solution while the main burner is firing. Immediately repair any leak found in the gas train or related components. DO NOT operate an appliance with a leak in the gas train, valves or related gas piping.

WATER CONNECTIONS

AIR INLET

GAS

WATER OUTLET

WATER INLET

FLUE OUTLET

FIG. 37 Water Connections

3.5" W.C.= Pgas

MANIFOLD GAS PRESSURE

– – – – = FIELD CONNECTED

FIG. 36 Manifold Gas Pressure Measurement

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Lochinvar 1, 000 through 2 warranty Water Connections

000, 000 through 2, 1 specifications

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