Figure 11. Heater fuel controls.

TM-5-4520-208-15 Heater Duct Type Potable 4000 000 BTU/HR Models BT400-40 and BT400-40-1 Manual
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TM 5-4520-206

Figure 11. Heater fuel controls.

b. The heat range is from a low correspond-

20. Temperature Selector Indicator Knob

ing to a discharge air temperature of slightly

a. The temperature selector indicator knob

below 150F to a high corresponding to approx-

(fig. 11) is mounted on the control panel next

imately 280F, Each number represents 25,

to the! temperature selector valve knob (fig.

with 150 being close to number "1" on the

11). Approximate range or temperature selec-

fuel control panel.

tor valve knob is indicated by the pointer on

the temperature selector indicator knob. When

the temperature selector valve knob is rotated,

21. Temperature Selector Valve Knob

a pinion on the shaft engages a pinion on the

temperature selector indicator knob shaft and

a. The temperature selector valve knob (fig.

rotates the knob in direct relationship to the

11) is mounted in the center of the fuel control

temperature selector valve knob.

panel.