Instructions For Pressure Test Gauge Connection - Space-Ray Infrared Radiant Tube Heater PTS Series Installation And Operation Instructions Manual

14.0)

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 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
counterclockwise 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 TYPE
Natural Gas
Propane Gas
* Minimum permissible gas supply pressure for purpose of input adjustment.
GAS PRESSURE TABLE
MANIFOLD PRESSURE
3.5" W.C.
10.0" W.C.
–30–
SUPPLY PRESSURE
Minimum*
5" W.C.
11" W.C.
to increase or
Maximum
14" W.C.
14" W.C.
Form #43343330
May 08