L.B. White AD100 - Manual (Page 13)

1. This heater has a throttle valve for varying heat output
located between the gas control valve and gas
manifold assemblies. THIS IS NOT A MANUAL GAS
SHUT OFF VALVE.
2. The throttle valve can be adjusted to deliver either
minimum heat or maximum heat. When the throttle
valve handle is parallel to the gas flow, the valve is
completely open to deliver maximum heat output.
(Refer to Figs. 7or 8)
FIG. 7 (AD100)
FIG. 9 (AD100)
FIG. 11
The throttle valve may be adjusted to minimum heat
output by turning the handle 90° to gas flow or any
position between maximum and minimum settings.
(Refer to Figs. 9, 10, and 11.)
FIG. 8 (AD060)
FIG. 10 (AD060)
12
Variable Heat Output
MAXIMUM
MINIMUM
MAXIMUM HEAT
MINIMUM HEA
T
75% OF MAXIMUM
90% OF MAXIMUM
MAXIMUM
MINIMUM