Refrigerant Pipe - Chigo CMV-R Serie Installation Manual

5. REFRIGERANT PIPE

5.1 Length and drop height permitted of the
refrigerant piping
Note: Assume equivalent pipe length of the branching pipe header to
be 0.5m,of the CS to be 1m(for calculation purposes).
Table.5-1
Total pipe length (Actual)
Actual length
Maximum
piping (L)
Equivalent length
Piping (farthest from the first line
pipe branch) equivalent length
CS to indoor unit equivalent length equivalent length
outdoor unit up
Indoor unit to
outdoor unit
drop height
outdoor unit down
Indoor unit to indoor unit drop height
g1
q
N14
(28)
Installation manual
8
Piping
Permitted value
1000m L1+ L2+L3+L4+L5+L6+
(
(Please refer to L7+L8+L9+L10+L11
the caution 5 of a+b+c+d+e+f+g+h+i+j+k
conditions 2) +l+m+n+o+p+q+r+s+t
175m
L1+L7+L9+L11+l+n+p
200m(Please
refer to caution 1)
40m/90m(Please
L7+L9+L11+l+n+p
refer to caution 5)
40m l+n+p
(Please refer to
70m
caution 3)
(Please refer to
110m
caution 4)
30m
Outdoor unit
(one or more outdoor units)
g2 g3
L
M
L1
G1
The first line branch pipe
Max piping equivalent length L≤200m
D
L8
L10
L9
CS6
E
r s t
N15 N16 N17
(28) (56) (140)
×2+
)
A
Mm
Φ19.05
Φ22.2
Φ25.4
Φ28.6
Φ34.9
Φ38.1
Φ41.3
Φ44.5
Φ54.1
L3
L2
B
A
L4
a
d
CS1
C
L7
(From the first line branch pipe) Maximum
piping equivalent length L≤40m/90m
i
N8(71)
N9(71)
j
CS4
CS to indoor unit equivalent length L≤40m
k
L11 N10(140)
CS5 m
l
Ⅱ
n
Mode 1
B
( mm )
Inch
3/4 ≥34
7/8 ≥36
1/1 ≥45
9/8 ≥55
11/8 ≥60
12/8 ≥60
13/8 ≥80
14/8 ≥80
17/8 ≥90
Oil return bend
Indoor unit
b
N1(71)
Ⅰ
N2(71)
c
N3(28)
e
N4(56)
N5(28)
f
CS2
g
N6(71)
N7(71)
h
CS3
N11(28)
o
N12(56)
Ⅲ
p
N13(56)
Mode 2
C
( mm )
≤150
≤150
≤150
≤150
≤250
≤350
≤450
≤500
≤500
Fig.5-2
Fig.5-1