Mitsubishi Electric PUMY-P112VKM3 Technical & Service Manual page 37

■ Pipe size (Branch box-Indoor unit) For M or S series Indoor unit
Indoor unit type
(kW)
Liquid
Pipe size (mm)
Gas
■ Pipe size (Branch box-Indoor unit) For P series Indoor unit
Indoor unit type (kW)
Liquid
Pipe size
(mm) Gas
■ Pipe size (Branch box-Indoor unit) For Cylinder unit and Hydrobox
Pipe size
Liquid
(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)
Connected pipes diameter
Type Model name
MAC-A454JP
MAC-A455JP
Flare
MAC-A456JP
(Fig.7-1)
PAC-493PI
PAC-SG76RJ-E
PAC-SG78RJB-E
PAC-SG79RJB-E
Braze
PAC-SG80RJB-E
(Fig.7-2)
PAC-SG77RJB-E
PAC-SG76RJB-E
OCH632A
15 18 20
[6.35 [6.35 [6.35
[9.52 [9.52 [9.52
35 50 60
[6.35 [6.35 [9.52
[12.7 [12.7 [15.88
[9.52
[15.88
Diameter A
mm mm
{9.52 → {12.7
{9.52
{12.7 → {9.52
{12.7
{12.7 → {15.88
{12.7
{6.35 → {9.52
{6.35
{9.52 → {15.88
{9.52
{9.52 → {12.7
{9.52
{12.7 → {9.52
{12.7
{12.7 → {15.88
{12.7
{6.35 → {9.52
{6.35
{9.52 → {15.88
{9.52
22 25 35
[6.35 [6.35 [6.35
[9.52 [9.52 [9.52
71 100
[9.52 [9.52
[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
Diameter B
mm
{12.7
{9.52
A
{15.88
Fig.7-1
{9.52
{15.88
{12.7
{9.52
A (Outside)
{15.88
{9.52
{15.88
37
42 50 60
[6.35 [6.35 [6.35
[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
B (Inside)
Fig.7-2
71
[9.52
[15.88