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Oval 80
v.2
and Sentinel
v.2
Radiant Tube Heaters
www.lbwhite.com
Owner’s Manual • Oval 80
v.2
and Sentinel
v.2
24
3. Open the burner box access panel.
4. Remove either the inlet or outlet pressure tap.
See Fig. 30.
FIG. 30
5. Remove the air inlet tube from the burner box
and route the gauge tube through the air inlet to
the gas control valve. See Fig. 31.
FIG. 31
PRESSURE
GAUGE
GAUGE
TUBE
GAUGE
TUBE
-- Attach pressure barb and hose to either the gas
valve inlet or outlet to measure gas pressure.
Securely tighten the pressure barb.
6. Close and latch the burner box. Open the fuel
supply valves to the heater, reconnect the
heater’s electrical supply, and start the heater.
B. Reading Pressures
1. With the heater operating, the pressure gauges
should read the pressures speci
fi
ed on the
dataplate. See Fig. 32.
2. Do the readings at the inlet and outlet pressure
gauges agree with that speci
fi
ed on the data-
plate? If so, then no further checking or adjust-
ment is required. Proceed to section “C”.
3. If the inlet pressures do not agree with that speci
fi
ed
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 speci
fi
ed on the
dataplate, then the pressure regulator internal to
the gas control requires adjustment. Refer to the
following instructions. The burner box will need to be
opened and closed/latched as needed to accurately
set the gas control pressures.
5. If manifold gas pressure is different than dataplate,
remove the internal pressure regulator cap and
adjust the internal pressure regulator clockwise or
counter clockwise. See Fig. 32.
FIG. 32
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. Close and latch panel. Reconnect air
inlet to burner box if necessary.
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.
OUTLET
PRESSURE TAP
INLET
PRESSURE TAP
AIR
INLET
0
5
10
30
20
25
15
35
0
5
10
30
20
25
15
OUTLET
PRESSURE TAP
INLET
PRESSURE TAP
INTERNAL PRESSURE
REGULATOR CAP