39
Indoor unit
type
Pipe size
(mm)
(kW)
Liquid
Gas
22
[
6.35
[
9.52
25
[
6.35
[
9.52
35
[
6.35
[
9.52
50
[
6.35
[
12.7
60
[
6.35
[
15.88
w
71
[
9.52
[
15.88
80
[
9.52
[
15.88
■
Pipe size (Branch box-Indoor unit) *Case of M series or S series Indoor unit
Indoor unit
type
Pipe size
(mm)
(kW)
Liquid
Gas
35
[
6.35
[
12.7
50
[
6.35
[
12.7
60
[
9.52
[
15.88
71
[
9.52
[
15.88
■
Pipe size (Branch box-Indoor unit) *Case of P series Indoor unit
When using 35, 50 type indoor unit of P series, use the flare nut (for R410A) attached to the indoor unit.
Do not use the flare nut (for R407C) in the indoor unit accessory. If it is used, a gas leakage or even a pipe
extraction may occur.
For liquid
For gas
[
9.52mm
[
15.88mm
A
UNIT
B
UNIT
C
UNIT
D
UNIT
E
UNIT
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Gas pipe
[
6.35 mm
[
9.52 mm
[
6.35 mm
[
9.52 mm
[
6.35 mm
[
9.52 mm
[
6.35 mm
[
9.52 mm
[
6.35 mm
[
12.7 mm
w
3- branch type is only for
A
,
B
, and
C
unit.
w
w
w
[
6.35mm
[
9.52mm
[
12.7mm
[
15.88mm
[
19.05mm
Conversion formula
1/4 inch
3/8 inch
1/2 inch
5/8 inch
3/4 inch
(1) Valve size for outdoor unit
(2) Valve size for branch unit
Different-diameter joint (optional parts) (Fig.7-1)
Fig.7-1
MAC-A454JP
MAC-A455JP
MAC-A456JP
PAC-493PI
PAC-SG76RJ-E
{
9.52
➝
{
12.7
{
12.7
➝
{
9.52
{
12.7
➝
{
15.88
{
6.35
➝
{
9.52
{
9.52
➝
{
15.88
{
9.52
{
12.7
{
12.7
{
6.35
{
9.52
{
12.7
{
9.52
{
15.88
{
9.52
{
15.88
Connected pipes diameter
mm
Diameter A
mm
Diameter B
mm
Model name
A
B
When using 60 type indoor unit of MEXZ series, use the flare nut in the indoor unit accessory for the gas side
connecting of indoor unit.
Do not use the flare nut (gas side) attached to the indoor unit. If it is used, a gas leakage or even a pipe extraction
may occur.
OC316D--2.qxp 07.8.24 2:09 PM Page 39
