Brochure

32 AB218186428184en-US1501
GENERAL INFORMATIONPRODUCT INFORMATIONINTEGRATION INTO SYSTEMORDERING INFORMATION SYSTEM DESIGN
Manage superheat
During normal operation, refrigerant enters
the compressor as a superheated vapor. Liquid
flood back occurs when a part of the refrigerant
entering the compressor is still in liquid state.
Liquid flood back can cause oil dilution and, in
extreme situations lead to liquid slugging that
can damage compression parts.
Requirement
System evaluation
In steady state conditions,
• Suction superheat must remain within
9°F to 54°F
• According to the floodback chart
In transient conditions,
• According to the floodback chart
Use the tables below in relation with the system
charge and the application to quickly evaluate
the risk and potential tests to perform.
Charge limit is defined in table below:
Discharge temperature sensor must be placed
onto the discharge fitting and be insulated.
Oil temperature sensor must be placed on the
mid shell, closed to the lower shell, and be
insulated.
BELOW cHargE Limit aBOVE cHargE Limit
Non reversible No test or additional safeties required Liquid flood back test
Reversible Defrost test
Liquid flood back test
Defrost test
Models
Refrigerant charge limit
(lbs)
Single
HRM032-034-038-040-042-045-047
HRP034-038-040-042-045-047
HRH029-031-032-034-036-038-039-040-047-048
8
HRM048-051-054-058-060/HLM068-072-075-078-081
HRP048-051-054-058-060/HLP068-072-075-078-081
HRH041-044-049-051-054-056/HLH061-068-
HLJ072-075-083
12
HCM094-109-120
HCP094-109-120
HCJ091-106-121
16
Tandem
TLJ082-098-122-136-144-166 13
TCJ181-211-241 18