Mitsubishi Electric CITY MULTI PURY-P-THMU-A Installation Manual page 13

<Refrigerant piping connection examples>
[Fig.10..]
No.
1
ID ø25.4 [1]
ø22.2
Shape ID ø22.2 [7/8]
[7/8]
P72 -
P96 1 pc. Low-pressure side
P120 -
1 Connecting pipe (ID ø25.4 mm [1 in], ID ø22.2 mm [7/8 in]) <Included with outdoor unit>
2 Connecting pipe (ID ø25.4 mm [1 in], OD ø19.05 mm [3/4 in]) <Included with outdoor unit>
3 Connecting pipe (ID ø25.4 mm [1 in], ID ø28.58 mm [1-1/8 in]) <Included with outdoor unit>
4 Connecting elbow (ID ø19.05 mm [3/4 in], OD ø19.05 mm [3/4 in]) <Included with outdoor unit>
<Front pipe routing>
When not attaching a low-pressure twinning pipe
<A>
<B>
A
A
B
B
C
<Bottom pipe routing>
When not attaching a low-pressure twinning pipe
<A>
<B>
A
C
D
B
C
<A> Low-pressure side
A Refrigerant service valve piping
D Twinning Kit (sold separately)
E On-site piping (low-pressure connecting pipe: to BC controller)
F On-site piping (low-pressure connecting pipe: to outdoor unit)
G 75 mm [2-31/32 in] (reference measurement)
*1 For the attachment of the Twinning pipe (sold separately), refer to the instructions included in the kit.
*2 Connection pipe is not used when the Twinning Kit is attached.
*3 Use a pipe cutter to sever.
• Front pipe routing
Expand the high-pressure side on-site piping
P72 (ID ø15.88 mm [5/8 in]) and connect to the refrigerant
service valve piping.
Use the included connecting pipe 2 and elbow 4 to
P96, P120
connect.
Expand the low-pressure side on-site piping
P72 (ID ø19.05 mm [3/4 in]) and connect to the refrigerant
service valve piping.
P96
Use the included connecting pipe 1 to connect.
P120
Use the included connecting pipe 3 to connect.
2
ID ø25.4 [1]
ø22.2
[7/8]
OD ø19.05 [3/4]
-
1 pc. High-pressure side
1 pc. High-pressure side
<Severing portion
referral figure>
H
*3
I
<B> High-pressure side
B On-site piping (low-pressure connecting pipe)
H ID ø25.4 mm [1 in] side
• Bottom pipe routing
3
ID ø25.4 [1]
ø28.58
[1-1/8]
ID ø28.58 [1-1/8]
-
-
1 pc. Low-pressure side
When attaching a low-pressure twinning pipe *1,*2
<A>
<B>
When attaching a low-pressure twinning pipe *1,*2
<A>
<B>
C On-site piping (high-pressure connecting pipe)
I Severing portion
Expand the high-pressure side on-site piping
P72 (ID ø15.88 mm [5/8 in]) and connect to the refrigerant
service valve piping.
Use the included connecting pipe 2. Expand the
P96, P120
on-site piping to connect to ID ø19.05 mm [3/4 in]
Expand the low-pressure side on-site piping
P72 (ID ø19.05 mm [3/4 in]) and connect to the refrigerant
service valve piping.
Sever the included connecting pipe 1 as shown in
P96
the figure with a pipe cutter to use. Expand the on-site
piping to connect to ID ø22.2 mm [7/8 in].
Sever the included connecting pipe 3 as shown in
P120
the figure with a pipe cutter to use. Expand the on-site
piping to connect to ID ø28.58 mm [1-1/8 in].
(Unit: mm [in])
4
ID ø19.05 [3/4]
OD ø19.05 [3/4]
-
1 pc. High-pressure side
1 pc. High-pressure side
D
E
F
C
D
F
E
C
1