Installation and Commissioning Guide - MultiElite 2 Split System
Doc. No. 9590-5009
Ver. 1 211221
33
Installation and Commissioning Guide
Multi Split System
8. Insert hexagonal wrench into the post valve (liquid line valve) and open the valve by turning the wrench 1/4
counterclockwise. Listen for gas to exit the system, then close the valve after 5 seconds.
Evacuation Instructions
NOTE:
OPEN VALVE STEMS GENTLY
DO NOT
Preparations and Precautions
BEFORE PERFORMING EVACUATION
A
ir E
vacu
at
io
n
9. Watch the Pressure Gauge for one minute to make sure that there is no change in pressure. It should read slightly
higher than the atmospheric pressure.
10. Remove the charge hose from the service port.
11. Using hexagonal wrench, fully open both the high pressure and low pressure valves.
CAUTION
OPEN VALVE STEMS GENTLY
When opening valve stems, turn the hexagonal wrench until it hits against the stopper.
DO NOT
try to force the valve to
open further.
12. Tighten valve caps on all three valves (service port, high pressure, low pressure) by hand. You may tighten it further
using a torque wrench if needed.
13. If the outdoor unit uses all vacuum valves, and the vacuum position is at the main valve, the system is not connected
with the indoor unit. The valve must be tightened with a screw nut. Check for gas leaks before operation to prevent
leakage.
13.01. Refrigerant Charge Details
Model
MRC-075CS-3
MRC-100CS-4
MRC-120CS-5
Refrigerant Type
R-32
R-32
R-32
Refrigerant Charge (grams)
1850
2400
2950
Pre-charged Length (metres)
3 x 10
4 x 10
5 x 10
Additional Refrigerant per metre
(grams/metres)
12
12
12
Liquid Pipe
3 x Ø6.35 (1/4")
4 x Ø6.35 (1/4")
5 x Ø6.35 (1/4")
Gas Pipe
3x Ø9.52 (3/8")
3 x Ø9.52 (3/8")
+ 1 x Ø12.7 (1/2")
4 x Ø9.52 (3/8")
+ 1 x Ø12.7 (1/2")
