ActronAir ESP Digital SRD173C - Page 23

Installation and Commissioning Guide
Split Ducted ESP Digital
Installation and Commissioning Guide - Split Ducted ESP Digital Units
Doc. No.0525-077 Ver. 2 200129
23
IMPORTANT
• 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 PVE 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.
DETAIL B
DETAIL A
(SRD131C - up to - SRD203C)
NITROGEN
HOSE
See Diagram Below:
(SRD131C shown for illustration purposes only)
BRAZE
JOINTS
To
Indoor Unit
N
I
T
R
O
G
E
N
A
DETAIL A
(SRD233C model only)
NITROGEN
HOSE
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 1000 microns.
3. Check vacuum with vacu stat. Break the vacuum with dry Nitrogen to 100kPa
4. Release Nitrogen pressure. Evacuate to 500 microns.
5. Check vacuum with vacu stat. Break the vacuum with dry Nitrogen to 100kPa
6. Release Nitrogen pressure. Evacuate to 500 microns.
7. Check vacuum with vacu stat.
8. Open valve
A) LIQUID: SRD173C - SRD203C SRD233C B) GAS: SRD173C - SRD203C - SRD233C
OPEN
CLOSED
WRENCH
KEY
(OPEN= Operating Position)
(CLOSED= As Shipped Position)
TO SHUT-OFF:
Turn clock wise
(1/4 turn)
(O = Open - Operating Position)
(S = Shut-Off - As Shipped Position)
TO OPEN:
Turn counter
clock wise
(1/4 turn)
S
O
TO OPEN:
Turn counter clock wise (1/4 turn)
(As Shipped Position)
CLOSE
(Operating Position)
OPEN
TO CLOSE:
Turn clock wise (1/4 turn)