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
22
Gas Control Valve
1. Remove the hose from sediment trap.
2. Remove the two nuts that secure the gas control valve’s
mounting bracket to the center partition of the burner
box. See Fig. 24.
FIG. 24
3. Remove the 4 screws from gas valve door. See Fig. 25.
FIG. 25
FIG. 26
4. Pull valve assembly through the gas valve door opening.
See Fig. 26.
Transformer
The transformer (Fig. 27) reduces the main power sup-
ply voltage to 24 VAC. The 24 VAC is sent to the ignition
controller. Once the ignition controller receives 24 VAC,
an ignition cycle begins.
If the transformer is receiving main power voltage, but
24 VAC is absent from its output terminals, the trans-
former is defective. The heater will not operate, nor will
the green LED on the burner box side be on.
FIG. 27
