GENER
AL INFORMA
TION
PR
ODUC
T INFORMA
TION
SY
STEM DESIGN
INTEGR
ATION INT
O SY
STEM
ORDERING INFORMA
TION
Test N°
Purpose
Test condition
Pass criteria
Solutions
1
Check proper
oil return
Lowest foreseeable evaporation,
and highest foreseeable
condensation.
Minimum speed running
6 hours.
For reversible system, perform test
in both heating and cooling mode.
Oil level must be visible or full in the
sight glass when the compressor is
running.
1. Top-up with oil, generally 1-2% of
the total system refrigerant charge
(in weight). Above 3% look for
potential oil trap in the system.
2. Adjust oil boost function, for more
details see section”Oil management
logic”.
3. Oil separator can be added
A
Manage oil in the circuit
R
Requirement
System evaluation
Test, criteria and solutions
Oil level must be visible or full in the sight
glass when the compressor is running and when
all compressors of the circuit are stopped.
Single compressor
Non split
Test N°1
Split
1. Since each installation is unique, test can not validate
the oil return, Oil separator is mandatory
2. Pay special attention to “Piping design” on field
3. Oil level must be checked and adjusted at
commissioning.
SY
STEM DESIGN
25
AB237586440343en-000601