Mitsubishi Electric PUMY-P250YBM2-BS, Техническое и сервисное руководство

Страница: 26 / 156

26
TCH091
7-2-2. Connection with Branch box
Conversion formula
1/4 F ø6.35
3/8 F ø9.52
1/2 F ø12.7
5/8 F ø15.88
3/4 F ø19.05
7/8 F ø22.2
1 F ø25.4
Fig. 7-2
Fig. 7-3
A (outside) B (inside)
Fig. 7-1
In case of using 1-branch box
Flare connection employed. (No. brazing)
A
C C C C C
A B
B
C C C C C
A A
B
C C C C C
B B
C C
In case of using 3-branch boxes
In case of using 2-branch boxes
Branch box
2 branches pipe (joint)
: optional parts.
2 branches pipe (joint)
: optional parts.
Branch box #2
Branch box #3 Branch box #2
Branch box #1
Branch box #1
Selecting pipe size (Fig. 7-1)
A
Model Liquid pipe Gas pipe
P250 ø9.52 ø22.2
ø22.2 P300 ø12.7
B
Total down-stream capacity
of indoor units
Model Liquid pipe Gas pipe
– 16.0 kW
P250 ø9.52
ø15.88
P300 ø12.7
16.1 kW – 22.4 kW
P250 ø9.52
ø19.05
P300 ø12.7
22.5 kW –
P250 ø9.52
ø22.2
P300 ø12.7
C
The piping connection size differs according to the type and capacity of indoor units.
Match the piping connection size of branch box with indoor unit.
If the piping connection size of branch box does not match the piping connection
size of indoor unit, use optional different-diameter (deformed) joints to the branch
box side.
(Connect deformed joint directly to the branch box side.)
Different-diameter joint (optional parts) (Fig. 7-2, 7-3)
Model name
Connected pipes diameter Diameter A Diameter B
mm mm mm
MAC-A454JP ø9.52 → ø12.7 ø9.52 ø12.7
MAC-A455JP ø12.7 → ø9.52 ø12.7 ø9.52
MAC-A456JP ø12.7 → ø15.88 ø12.7 ø15.88
PAC-493PI ø6.35 → ø9.52 ø6.35 ø9.52
PAC-SG76RJ-E ø9.52 → ø15.88 ø9.52 ø15.88
PAC-SG75RJ-E ø15.88 → ø19.05 ø15.88 ø19.05
PAC-SG71RJ-E ø15.88 *1 → ø22.2 *2 ø15.88 *1 ø22.2 *2
*1 When connecting to MSDD-50AR-E or a branch box, the pipes on-site.
Use the nuts that are included with the 2-branch pipe and branch box.
*2 Brazing
2 branch pipe (Joint) : Optional parts (According to the connection method,
you can choose the favorite one.)
Model name Connection method
MSDD-50AR-E
MSDD-50BR-E
brazing
Installation procedure (2 branches pipe (Joint))
Refer to the installation manuals of MSDD-50AR-E and MSDD-50BR-E.
The lineup of a connectable indoor unit depends on the
district/area/country.
Pipe size (Branch box-Indoor unit) *Case of M, S, P series Indoor unit
Indoor unit
type
(kW) 15 20 22 25 35 42 50
Pipe size
(mm)
Liquid ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø6.35 ø6.35
Gas
ø9.52 ø9.52 ø9.52 ø9.52 ø9.52 ø9.52 ø12.7
(1) Valve size of branch box for outdoor unit
For liquid ø9.52 mm
For gas ø15.88 mm
(2) Valve size of branch box for indoor unit
A
UNIT
Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
B
UNIT
Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
C
UNIT
Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
D
UNIT
Liquid pipe ø6.35 mm
Gas pipe ø9.52 mm
E
UNIT
Liquid pipe ø6.35 mm
Gas pipe ø12.7 mm
* 3-branch type : only
A
,
B
,
C
unit
A B