Hussmann proto-aire Manuel De Montage

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Protocol™ Installation and 
Service Manual 
Protocol™ with Split Suction 
Oil Return System Not shown 
 
Split suction is used when two temperatures are required from the same Protocol™ unit.  The use of split 
suction allows for greater efficiency due to the fact that the compressors are operating closer to the desired 
suction temperature. 
 
Suction
Filters
L
iquid B
ranch Li
ne
Suction Branch 
L
ine
Case
Case
Case
Case
Split Suction Headers
Compressors
Turba-Shed 
Oil Separator
Discharge Header
Sight Glass
Liquid Line
Filter / Drier
Receiver
Condenser
 
 
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