Product Manual

ManualsBrandsSunStar ManualsHeaters, Stoves + FireplacesHeating Products Garage Tube Heater — NG, 35,000 BTU

Form #43471010

Mar 09 -15-

12.0) INSTRUCTIONS FOR PRESSURE TEST GAUGE CONNECTION

SUPPLY PRESSURE

1. The installer will provide a 1/8” N.P.T. tapped plug, accessible for test gauge connection immediately

upstream of the gas supply connection to the heater.

MANIFOLD PRESSURE – COMBINATION GAS VALVE IS FACTORY SET

1. Turn the gas valve to the “OFF” position. Remove the 1/8” plug from the combination gas valve at the outlet

pressure tap and connect a 1/8” nipple to the tapped hole. Connect the test gauge to the nipple. Turn on the

gas supply.

2. With the main burner operating, check the burner manifold pressure using a water column manometer.

Gauges that measure pressure in pounds per square inch are not accurate enough to measure or set the

manifold pressure. All measurements MUST BE made when this heater and all other gas burning equipment

that is connected to the gas supply system are operating at maximum capacity.

3. The combination gas valve is factory set and should not require adjustment. If full rate adjustment is

required, remove the cover screw. Using a small screwdriver, turn the adjustment screw clockwise 3 to

increase or counterclockwise 4 to decrease the gas pressure to the burner. Replace the cover screw. NOTE:

The step opening pressure of this gas valve is not adjustable.

4. Check the burner at step pressure, observing burner ignition and flame characteristics. The burner should

ignite properly and without flashback to the orifice, and should remain lit.

GAS PRESSURE TABLE

SUPPLY PRESSURE

GAS TYPE MANIFOLD PRESSURE

Minimum* Maximum

Natural Gas 3.5” W.C. 5” W.C. 14” W.C.

Propane Gas 10.0” W.C. 11” W.C. 14” W.C.

* Minimum permissible gas supply pressure for purpose of input adjustment.

Pressure Regulator Adjustment

(under cap screw)

1/8 NPT

Inlet Pressure

Tap with 3/16 Hex

Allen Wrench Plug

1/8NPT

Outlet Pressure

Tap with 3/16 Hex

Allen Wrench Plug

Gas Control

Knob

Wiring

Terminals (2)

Ground

Terminals (2)

OUTLET

INLET

CAUTION

Never jumper these terminals. This

shorts out valve coil and may burn

out heat anticipator in thermostat.

STEP-OPENING

GAS CONTROL VALVE

OFF