Pipe Size; Pipe Size (Branch Box-Indoor Unit) For P Series Indoor Unit; Valve Size For Outdoor Unit; Valve Size For Branch Unit - Mitsubishi Electric PUMY-P112VKM1 Service Manual

■ Pipe size (Branch box-Indoor unit) For M or S series Indoor unit
Indoor unit type
(kW)
15
Liquid
[6.35
Pipe size (mm)
Gas
[9.52
*1 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.
■ Pipe size (Branch box-Indoor unit) For P series Indoor unit
Indoor unit type (kW)
Liquid

Pipe size

(mm) Gas
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.

(1) Valve size for outdoor unit

For liquid
For gas

(2) Valve size for branch unit

*
Liquid pipe
A UNIT
Gas pipe
*
Liquid pipe
B UNIT
Gas pipe
*
Liquid pipe
C UNIT
Gas pipe
Liquid pipe
D UNIT
Gas pipe
Liquid pipe
E UNIT
Gas pipe
* 3- branch type is only for A, B, and C unit.
Different-diameter joint (optional parts) (Fig.7-1)
Connected pipes diameter
Model name
MAC-A454JP
{9.52 ➝ {12.7
MAC-A455JP
{12.7 ➝ {9.52
MAC-A456JP
{12.7 ➝ {15.88
PAC-493PI
{6.35 ➝ {9.52
PAC-SG76RJ-E
{9.52 ➝ {15.88
OCH576
18 20
[6.35
[6.35 [6.35
[9.52 [9.52 [9.52
35 50
[6.35 [6.35
[12.7 [12.7
Diameter A Diameter B
mm mm
{9.52
{12.7
{12.7
{6.35
{9.52
22 25 35
[6.35 [6.35
[9.52 [9.52
60 71 100
[9.52 [9.52 [9.52
[15.88 [15.88 [15.88
[9.52 mm
[15.88 mm
[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
mm
{12.7
{9.52
A
{15.88
Fig.7-1
{9.52
{15.88
29
42 50 60
[6.35 [6.35
[6.35
1
[9.52 [12.7 [15.88*
Conversion formula
1/4 inch
[6.35mm
3/8 inch
[9.52mm
1/2 inch
[12.7mm
B
5/8 inch
[15.88mm
3/4 inch
[19.05mm
71 80
[9.52
[9.52
[15.88 [15.88