Bitzer KT-600-4 Manual Del Usuario página 45

Suction and pressure headers for use with oil level controllers
Headers and pipes can be designed in accordance with the versions shown above ( see page 36 , see page 38 ).
However, suction headers have lower overall symmetry and gas velocity requirements: A lateral suction gas inlet is
possible, and several suction line groups can be operated in parallel (e.g. with different suction pressures). For this
case, a system with high-pressure reservoir is recommended for "standard refrigerants", in order to guarantee
enough oil pressure at the controllers under all operating conditions. However, the pipe sections connected to the
compressors should conform to the recommended design.
NOTICE
!
!
Danger of liquid slugging!
In parallel compounding with oil level controllers, observe the recommended pipe layout!
Execute the construction such that no oil or refrigerant condensate (from the header) can flow back to the
compressor at standstill.
In general, pressure headers and check valves must fulfil the criteria mentioned above ( see chapter Parallel com-
pounding with optimized suction header, page 35 ).
KT-600-4 // PDF Download 45