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BluCube Installation and Maintenance Manual 7222094 V1.12.0_04_2016
Traps are required every 4m
of vertical rise.
Installation Data
Refrigeration Pipework Installation - Good Practices
Oil Traps
For long vertical rises in both suction and discharge lines, it is essential that oil traps are located every 4m to ensure
proper oil movement / entrapment. In addition there should be an oil trap at the exit of the air handling unit before a
vertical riser is applied (refer to example below).
Pipe Supports
The following table identifies the maximum distance between pipe supports on vertical and
horizontal pipe runs.
CAUTION
All pipework should be clamped prior to insulation being applied (Suction Line). Clamping over insulation is not
acceptable.
Horizontal Sections
It is good practice to ensure a slight gradient toward the compressor in the direction of the refrigerant flow for suction
lines running horizontal. This assists oil return to the compressor. A gradient of approximately 1:200 (0.5%) shall be
used.
Condensing Unit Above Air Handling Unit Condensing Unit Below Air Handling Unit
Pipe O/D
(inches
Support
distance (m)
3/8 - 7/8
1 1/8 - 2 1/8
1.0
2.0
IMPORTANT
The pipe sizes and refrigerant charges quoted are for guidance only. It is the responsibility of the installing contractor/
site engineer to check the pipe size/refrigerant charge is correct for each system installation and application.
Split systems may require additional oil which should be added to the low pressure side of each compressor.
Design should be in accordance with accepted refrigeration practice to ensure good oil return to the compressor(s)
under all normal operating conditions.
REMEMBER excessive pressure loss in interconnecting pipework will impair system performance; this should be
factored in during the design of the system and where necessary oil traps employed.
- - - - -
Suction Line
………..
Liquid
Note the diagram above is for illustration only.
Condensing Unit
BluCube™
Ins
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Summary of Contents for BluCube CUR092V16-1CO-0
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