Installation and Commissioning Guide
Split Tri-Capacity
35
Installation and Commissioning Guide 500-700 Tri-Capacity Split Ducted
Doc. No.0525-098
Ver. 2 210330
NOTES
Importance of Evacuation:
• Any non-condensable product left in the system can cause the pressure in the high side of the system to increase and in
turn, the compression temperature to rise.
• Moisture will result in adverse reaction in the refrigerant circuit.
• The POE oil used in the R-410A compressor is hygroscopic, which means that it absorbs moisture from the air. To prevent
chemical reactions in the system, any moisture must be removed at all costs.
• Oxygen (air) reacts with the compressor oil and can lead to faults such as compressor failure.
Evacuation Procedure (Triple Evacuation)
1. Fit service gauges to the ball valves (liquid line service valve and suction line service valve).
2. Evacuate the system to 500 microns.
3. Check vacuum with vacuum gauge. Break the vacuum with dry Nitrogen to 100kPa.
4. Release Nitrogen pressure. Evacuate to 500 microns.
5. Check vacuum with vacuum gauge. Break the vacuum with dry Nitrogen to 100kPa.
6. Release Nitrogen pressure. Evacuate to 500 microns.
7. Check vacuum with vacuum gauge.
8. Open valves.
9. Carry out above procedures for both circuit 1 and 2 systems.
TO OPEN TURN ANTI-CLOCK WISE (1/4 TURN)
( As Shipped Position )
CLOSE
TO CLOSE TURN CLOCK WISE (1/4 TURN)
( Operating Position )
OPEN
OPEN
CLOSED
Wrench Key
( OPEN = Operating Position )
( CLOSED = As Shipped Position )
TO OPEN TURN ANTI-CLOCK WISE (1/4 TURN)
( As Shipped Position )
CLOSE
TO CLOSE TURN CLOCK WISE (1/4 TURN)
( Operating Position )
OPEN
OPEN
CLOSED
Wrench Key
( OPEN = Operating Position )
( CLOSED = As Shipped Position )
