Advertisement
MULTI V Water IV
8. Refrigerant Piping System
8.2 Connection of Outside units
Connection of high/low pressure common pipe
Slave
Outside Unit
2 Outside Units
1. For the high/low pressure common pipe, connect both master outside unit and slave outside units to the pipe by
using elbows.
2. For cutting the pipe, connect the high/low pressure common pipe after removing burrs, dusts and foreign
material within the pipe. Otherwise, the product may not operate due to sludge within the pipe.
3. For the working part leakage test, apply the nitrogen gas pressure of 3.8MPa (38.7kgf/cm
4. The vacuum criteria is to maintain the vacuum level to less than 5 Torr 1 hour after reaching 5 Torr. (Execute
the vacuum work again when it is below the criteria.)
5. Open the valve with the hexagon wrench.
Connecting branch pipe between outside units
Outdoor units
A
B
(Master)
(Slave1)
2 Unit
c
A
B
(Master)
(Slave1) (Slave2)
3 Unit
b
c
A
B
(Master)
(Slave1) (Slave2)
4 Unit
a
b
Heat Pump
Master
Outside Unit
Model
ARCNN21
C
ARCNN31
C
D
(Slave3)
ARCNN41
c
Slave2
Outside
Unit
Slave1
Outside
Unit
3 Outside Units
Gas pipe
416
408
I.D.28.58
I.D.28.58
111
I.D.22.2
I.D.31.8
I.D.34.9
I.D.41.3 I.D.38.1 O.D.34.9
I.D.28.58
130
341
298
I.D.41.3
I.D.34.9
111
I.D.41.3
O.D.34.9
I.D.28.58
125
415
375
134
I.D.41.3
I.D.44.48 I.D.53.98
I.D.28.58
Installation of Outside Units
Main
Outside Unit
2
).
[Unit:mm]
Liquid pipe
331
314
I.D.15.88
I.D.15.88
I.D.12.7
I.D.9.52
I.D.19.05
83
I.D.22.2
O.D.19.05
I.D.12.7
I.D.15.88
70
334
281
I.D.22.2
I.D.19.05
I.D.19.05
I.D.15.88
I.D.12.7
334
281
I.D.22.2
I.D.19.05
I.D.19.05
I.D.25.4
O.D.22.2
I.D.15.88
I.D.12.7
80
83
83
25
Advertisement
