L.B. White Oval 80™ Radiant - Manual (Page 23)

B. Reading Pressure
1. With the heater operating, the pressure gauges should
read the pressures specified on the dataplate.
2. Do the readings at the inlet and outlet pressure gauges
agree with that specified on the dataplate? If so,
then no further checking or adjustment is required.
Proceed to section C.
3. If the inlet pressures do not agree with that specified
on the dataplate, then the regulator controlling gas
pressure to the heater requires adjustment.
4. If the inlet pressure is correct but the burner manifold
pressure does not agree with that specified on the
dataplate, then the pressure regulator internal to the
gas control requires adjustment. The burner box will
need to be opened and closed/latched as needed to
accurately set the gas control pressures.
5. Set the thermostat to its highest setting. The single
amber light on the burner box panel will come on, and
gas control will open. If manifold gas pessure is
different than the dataplate, remove the cap on the gas
control as shown in Fig. 36. Turn the pressure adjusting
screw beneath this cap clockwise to increase pressure
or counter clockwis to decrrease pressure, while the
heater is in operation.
FIG. 36
C. Completion
1. Close the fuel supply valve to the heater and allow the
heater to burn off any remaining fuel.
2. Disconnect the heater from its electrical supply.
3. Remove the gauges and associated hardware.
4. Install the plug in the gas control valve and in the
connector.
5. Tighten all securely. Install the cap on the gas control
valve. Close and latch the door. Reconnect the air inlet
to the burner box if necessary.
6. Remove the bushing and fitting from the sediment
trap’s tee. Install the sediment trap’s nipple and cap.
7 Open the fuel supply valve and reconnect electrical
supply to heater. Start the heater and check for gas
leaks. Set the thermostat to desired temperature.
23
OUTLET PRESSURE TAP
GAUGE AT VALVE OUTLET
CAP