Mitsubishi Electric City Multi PUMY-SP112VKM Technical & Service Manual page 34

■ Pipe size (Branch box-indoor unit)
Indoor unit series Model number
15–42
50
M series or S series
60
71
35–50
P series
60–100
* If the pipe size of indoor unit is different, use a different-diameter joint.
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
OCH668B
Liquid pipe Gas pipe
{6.35 {9.52
{6.35 {12.7
{6.35 {15.88
{9.52 {15.88
{6.35 {12.7
{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 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
34
Conversion formula
1/4 inch
[6.35 mm
3/8 inch
[9.52 mm
1/2 inch [12.7 mm
B
5/8 inch [15.88 mm
3/4 inch [19.05 mm