System Heat Pump Outdoor Unit - MegaFrio

Refrigerant piping installation
CRUN1008T0
Example : 5 indoor units
connected
: outdoor unit
: 1st branch
(branch union)
: Y branch
: indoor unit
: header
: sealing
: downward
indoor unit
➲ Piping diameter (A)
- Liquid pipe : Ø15.88mm(5/8 inch)
- Gas pipe : Ø28.58mm(9/8 inch)
➲ Refrigerant pipe diameter from branch to branch (B,C)
➲ Total pipe length = A+B+C+a+b+c+d+e ≤ 220m
26 Outdoor Unit
50m
H
Downward indoor unit total capacity
[kW(Btu/h)]
~8.2(28,000)
L
l
H
h
~17.6(60,000)
~28.1(96,000)
~36.3(125,000)
Longest pipe length
A+B+b ≤ 100m
Longest pipe length after 1st branch
B+b ≤ 30m
A
A
B
B
Liquid pipe
[mm(inch)]
Ø9.52(3/8)
Ø12.7(1/2)
Ø12.7(1/2)
Ø15.88(5/8)
Difference in height(outdoor ↔ indoor)
H ≤ 50m ( 40m : outdoor is lower than indoor units)*
Difference in height (indoor ↔ indoor)
h ≤ 15m
* Indoor unit should be installed at lower position than the
header
C
1
C
c
d e
3 D
4 D 5 D
L 100m
l 30m
b
X
E
a 2
D
Branch pipe can not be used
after header
Gas pipe
[mm(inch)]
Ø15.88(5/8)
Ø19.05(3/4)
Ø25.4(1)
Ø28.58(9/8)
D
F
G
15m
h