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Idiomas disponibles
Idiomas disponibles
Ignition Control
The ignition control sends and receives voltages to
operate or verify operation of components. Refer to
the following and Fig. 27 to understand the ignition
control's terminal 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 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.
FIG. 27
Owner's Manual • Oval Radiant Tube Heaters
Oval Radiant Tube Heaters
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. 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
reading up to 35 in. W.C. (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 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. 28.
FIG. 28
BUSHING
GAUGE
1/8" NPT
BARBED
FITTING
23
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