Gas Pressure Checks - L.B.White Oval 80 HP Instrucciones Y Manual Del Propietario

Gas Pressure Checks

■ The following is a typical procedure to be followed
in checking gas pressures.
■ Consult the dataplate on the heater or page 4 in
this manual for specific pressures.
■ Gas pressure measured at the inlet to the gas
valve is Inlet Pressure and gas pressure measured
at the outlet of the gas valve is Burner Manifold
Pressure
MATERIALS REQUIRED
Quantity Description
1 Gas pressure gauges capable of reading
up to 10 psig (may also be order from
L.B. White, part number 500-09702)
1 Bushing, 1/2 in.x 1/8 in.
1 1/8 in. barbed fitting
1 3/16 in. allen key
A. Preparation
1. Disconnect the heater from the electrical supply
and close the fuel supply valve to the heater inlet.
2. Remove the lower nipple and cap from the sedi-
ment trap and install the bushing and 1/8 in. NPT
barbed fitting. See Fig. 27.
FIG. 27
BUSHING
1/8" NPT
BARBED FITTING
Oval 80 Radiant Tube Heaters
B. Reading Pressures
1. With the heater operating, the pressure gauges
should read the pressures specified on the
dataplate.
2. Do the readings at 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 speci-
fied on the dataplate, then the regulator controlling
gas pressure to the heater requires adjustment.
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.
Install plugs in gas control valve and in connector.
Tighten all securely.
4. Reconnect hose and adapter to sediment trap.
tighten securely.
5. Open fuel supply valve and reconnect electrical
supply to heater. Start the heater and check for gas
leaks. Set thermostat to desired temperature.
HIGH PRESSUE
GAUGE
Owner's Manual • Oval 80
23