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Oval 80 and Sentinel Radiant Tube Brood Heaters
Owner’s Manual • Oval 80 and Sentinel
23
FIG. 30
TRANSFORMER
Ignition Control
The control sends and receives voltages to operate or
verify operation of components. Refer to the following
and Fig. 31 to understand the ignition control’s termi-
nal designators if doing voltage checks on the control.
L1:
Line voltage to control from power supply.
IND:
Line voltage from control to fan motor.
LED:
Connection for control’s diagnostic light wiring
harness.
MV:
24 VAC from ignition control to gas control
valve.
PS2:
24 VAC from air pressure switch back to
control
PS1:
24 VAC from control to air pressure switch.
W:
24 VAC from transformer to control. (without this
voltage the ignition control will not function)
FS:
No terminal.
R:
No terminal.
X:
No terminal.
C/COM:
Control and burner ground.
Also refer to “Operation Sequence” within this manual
as needed to understand operation of the ignition
control during a call for heat.
Gas Pressure Checks
■
The following is a typical procedure to be fol-
lowed in checking gas pressures.
■
Consult the dataplate on the heater or page 4
in this manual for speci
fi
c pressures. The gas
pressures will vary depending upon fuel type.
■
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
2
Gas pressure gauges capable of read-
ing up to 9 kPa (may also be ordered
from L.B. White, part number 00764)
1
Bushing, 1/2 in.x 1/8 in.
1
1/8 in. barbed
fi
tting
1
3/16 in. allen key
A. Preparation
1. Disconnect the brood heater from the electrical
supply and close the fuel supply valve to the
brood heater inlet.
2. Remove the lower nipple and cap from the sedi-
ment trap and install the bushing and 1/8 in. NPT
barbed
fi
tting. See Fig. 32.
3. Remove the plug from the connector near the
power cord and route the gauge tubing through
the connector. See Fig. 33. Keep the connector’s
plug.
FIG. 31
FIG. 32
BUSHING
GAUGE
1/8 NPT BARBED
FITTING
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