Vapor Injection - Hussmann Proto-Aire Installation Manual

Vapor Injection

Another method of cooling the scroll compressor is to use vapor injection. Vapor Injection
takes a small portion of liquid refrigerant from the main liquid line and runs it through a
thermostatic expansion valve and a heat exchanger, which helps to ensure vapor is sent to
the compressor as well as sub-cooling the main refrigerant before it goes to the TXV and
evaporator in the case.
C ase
C ase
C ase
C ase
Suction L ine
Filter
H eat
L iquid L ine
E xchanger
Filter / D rier
Sight G lass
V apor Injection
H eader
C om pressors
Suction H eader
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Protocol™ Installation and
Service Manual
R eceiver
C ondenser
S
T urba-Shed
O il Separator