Owner`s manual

Manual Control Startup

Gas Pressure Adjustments

THE F OLLOWING STARTUP PROCEDURES MUST

BE PERF ORMED BY A QUALIFIED T E C HNICIAN

ONLY.

REGULATED GAS PRESSURE

NOTE: Gas models only.

Incomi ng static gas pressure to the unit, with all the

gas appliances drawing from the supply, should be

a minimum of 5.5” W.C. (13.7 mbar) for natural gas

and 11” W.C. (28 mbar) for propane gas.

The manifold pressure, if measured after the regu-

lator located inside the control box, must be 3.5”

W. C. (9 mbar) for natural gas and 10” W.C. (25

mbar) for propane gas.

The pressure can be checked at the tap on either

the dual regulated gas valve or the solenoid valve.

Turn the adjusting screw on the left front side of the

dual regulated valve to adjust the gas pressure.

Turn the screw clockwise to raise the gas pressure

and counter-clockwise to lower it.

PRIMARY AIR ADJUSTMENT

NOTE: Gas models only.

The air shutter disc on the burner blower motor, lo-

cated inside the control box at the top of the as -

sembly, is factory adjusted to provide t he most effi-

cient blue flame possible at sea level.

1. Visually examine the quality of the flame.

2. If it needs adjusting, increase or decrease the

air mixture to attain the best flame quality.

Pressure Tap

Regulator

Cap

Regulator

Adju stment

Figure 2