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Page Title:
Figure 51. Refrigerant flow diagram. |
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  d. Heating Operation. Placing the selector
(4) To prevent frost from forming on the
switch in the LO-HEAT position actuates half of
evaporator, a back pressure regulating valve is
the evaporator heaters mounted, in the condi-
provided to prevent the suction pressure from de-
tioned air stream, directly behind the evaporator
creasing to a pressure which corresponds to a tem-
coil. When the selector switch is placed in the HI-
perature of less than 32°F. (Fahrenheit).
AGO 20053A
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