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Heating/Cooling Chassis and Front Panel
Size 007 .................................................................... 140 Ibs.
Size 009 .................................................................... 140 Ibs.
Size 012 .................................................................... 145 Ibs.
Size 015 .................................................................... 145 Ibs.
Cabinet/Wall Sleeve .................................................. 36 Ibs.
Louvers
Flush-stamped .............................................................. 6 Ibs.
Architectural .................................................................. 8 Ibs.
Every motor-driven refrigeration system operates on the carnot
cycle. A practical understanding of what goes on at the vari-
ous steps in this cycle can be a big help to the troubleshoot-
ing mechanic. Figure 20 illustrates the refrigeration cycle. The
diagram shows what occurs in each component of a hermeti-
Figure 20. Refrigeration Cycle
80
o
F Room Air to Evaporator
Evaporator
60
o
F Conditioned Air to Room
IM 812 / Page 22 of 28
Approximate Shipping Weights
Refrigeration Cycle
o
45
F R22 (Liquid and Gas)
to Evaporator
Capillary Restrictor
70 PSIG and 55
to Compressor (Gas)
Subbase
3" (76mm) High Electrical ........................................... 10 Ibs.
4" (102mm) High Electrical ......................................... 10 Ibs.
Electrical Receptacle .................................................... 1 Ib.
Plug Cord Cover ............................................................ 1 Ib.
Power Cord .................................................................... 1 Ib.
cally sealed air conditioning system, as used in this equip-
ment. The temperatures shown are typical of what they might
be when the air entering the condenser (outdoor temperature)
o
is 95
F, and the temperature of the conditioned space is 80
120
o
F Condenser Air to Outdoors
Condenser
95
o
F Outdoor Air to
Condenser
o
F
Hermetic Compressor
o
F.
o
120
F
Liquid R22
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