7
4. Installing the refrigerant piping
4.2. Pipe length and height difference (Fig. 4-1)
B
A
H
B
C
L
r
D
e
a
h
b
c
d
C
C
A
C
C
C
B
A
A
a
b
c
d
C
D
e
f
H
h
L
r
C C C C C
A, B, C, D
(mm [inch])
Liquid pipe
Gas pipe
380<3
¡
[3/8]
¡
[5/8]
380<+3
380<3
¡
[3/4]
a, b, c, d, e, f
(mm [inch])
Model number
Liquid pipe
Gas pipe
05, 06, 08, 12, 15, 18
¡
[1/4]
¡
[1/2]
24, 27, 30, 36, 48, 54
¡
[3/8]
¡
[5/8]
72
¡
[3/8]
¡
[3/4]
Branch kit model
CMY-Y62-G-E
4-Branching header
8-Branching header
CMY-Y64-G-E
CMY-Y68-G-E
Piping preparation
1
7DEOHEHORZVKRZVWKHVSHFL¿FDWLRQVRISLSHVFRPPHUFLDOO\DYDLODEOH
Outside diameter
Insulation thickness
Insulation material
mm (inch)
mm (inch)
6.35 (1/4)
8 (5/16)
+HDWUHVLVWLQJIRDPSODVWLF
VSHFL¿FJUDYLW\
9.52 (3/8)
8 (5/16)
12.7 (1/2)
8 (5/16)
15.88 (5/8)
8 (5/16)
19.05 (3/4)
8 (5/16)
2
Ensure that the 2 refrigerant pipes are insulated to prevent condensation.
3
Refrigerant pipe bending radius must be 4" (100 mm) or more.
Caution
%HVXUHWRXVHWKHLQVXODWLRQRIVSHFL¿HGWKLFNQHVV([FHVVLYHWKLFNQHVVPD\
FDXVH LQFRUUHFW LQVWDOODWLRQ RI WKH LQGRRU XQLW DQG EUDQFK ER[ DQG ODFN RI
thickness
may cause dew drippage.
Warning:
When pumping down the refrigerant, stop the compressor before disconnect-
ing the refrigerant pipes. The compressor may burst and cause injury if any
foreign substance, such as air, enters the system.
A
2XWGRRU8QLW
B
First Branch
C
Indoor unit
D
Cap
A
2XWGRRU8QLW
B
First Branch
C
Indoor unit
Fig. 4-1
Conversion formula
1/4 F
¡
3/8 F
¡
1/2 F
¡
5/8 F
¡
3/4 F
¡
P36/48
+3
P60
A+B+C+D+a+b+c+d+e
[
300 m [984 ft]
[
150 m [492 ft]
L = A+B+C+D+e
[
150 m [492 ft]
[
80 m [262 ft]
R
= B+C+D+e
[
30 m [98 ft]
+
Outdoor higher
[
50 m [164 ft]
Outdoor lower
[
40 m [131 ft]*
[
40 m [131 ft]
h
[
15 m [49 ft]
:KHQ3.)<31%083.)<31+083))<31(08RU3))<
31508LVLQFOXGHGXVHZLWKLQP
P36/48
+3
P60
A+a+b+c+d+e+f
[
300 m [984 ft]
[
150 m [492 ft]
L = A+f
[
150 m [492 ft]
[
80 m [262 ft]
R
= f
[
30 m [98 ft]
+
Outdoor higher
[
50 m [164 ft]
Outdoor lower
[
40 m [131 ft]*
[
40 m [131 ft]
h
[
15 m [49 ft]
:KHQ3.)<31%083.)<31+083))<31(08RU3))<
31508LVLQFOXGHGXVHZLWKLQP
