Toshiba MMU-AP0072H2UL Engineering Data Book page 28
208/230 v, 60 hz; 460 v, 60 hz
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- Service manual (178 pages) ,
- Service manual (176 pages) ,
- Manual (28 pages)
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3
Refrigerant piping design
3-3-2. Heat pump
Header unit
Follower unit
Outdoor unit
(2)
(1)
Ø3/8
(8) Outdoor unit connection piping kit.
(3) Main piping
(1) Outdoor unit connecting pipe
Outdoor unit capacity type
0
7
2
t
p y
e
0
9
6
t
p y
e
1
1
4
t
p y
e
(2) Balance pipe
Outdoor unit capacity type
144 to 228 type
(3) Main piping
Outdoor unit capacity type
0
7
2
/
0
9
6
t
p y
e
1
1
4
t
p y
e
1
4
4
/
1
6
8 /
1
9
2
t
p y
e
2
2
8
t
p y
e
(4) Branching pipe
Total capacity codes of indoor
units at downstream side (kBtu/h)(*3)
B
e
o l
w
2
3
2
3
o t
b
e
o l
w
6
1
6
1
o t
b
e
o l
w
1
1
6
1
1
6
o t
b
e
o l
w
1
9
3
1
9
3
r o
m
o
e r
*1: When using a Y-shaped branching joint for the 1st branch, select according to capacity code of the outdoor unit.
*2: Up to a total of 54 (kBtu/h) maximum capacity code is connectable to one line after branching of header.
When using a branching header for the 1st branch and the total capacity codes of all outdoor units are 114 or more, use a RBM-HY2043UL or RBM-HY2083UL regardless of
the total capacity codes of indoor units at downstream side.
*3: Pipe size differs based on the total capacity code value of indoor units at the downstream side.
If the total value exceeds the capacity code of the outdoor unit, apply the capacity code of the outdoor unit.
(6)
First branch section
(1)
Gas side
Liquid side
Ø
/ 7
8"
Ø
Ø
/ 7
8"
Ø
Ø
- 1
/ 1
8"
Ø
Balance pipe
Ø
/ 3
8"
Gas side
Liquid side
Ø
/ 7
8"
Ø
Ø
- 1
/ 1
8"
Ø
Ø
- 1
/ 1
8"
Ø
Ø
- 1
/ 3
8"
Ø
Gas side
Liquid side
Ø
/ 1
2"
Ø
Ø
/ 5
8"
Ø
Ø
/ 7
8"
Ø
Ø
- 1
/ 1
8"
Ø
Ø
- 1
/ 3
8"
Ø
(4) Branching pipe
(5) Indoor unit connecting pipe
(4)
(6)
(6)
(4)
(5)
Indoor unit
(5) Indoor unit connection pipe
Indoor unit capacity type
/ 1
2"
007 to 012 type
/ 1
2"
/ 1
2"
(6) Y-shaped branching joint (*1)
Total capacity codes of indoor units (kBtu/h)
B
e
o l
6
1
o t
b
1
3
6
r o
/ 1
2"
/ 1
2"
(7) Branching header (*2)
/ 5
8"
Total capacity codes of indoor units (kBtu/h)
/ 3
4"
For 4 branches
For 8 branches
/ 3
8"
(8) Outdoor unit connection piping kit
/ 3
8"
Outdoor unit
/ 1
2"
/ 5
8"
/ 3
4"
27
(7) Branching header
(6) Y-shaped branching joint
(4)
(5)
(5)
(6)
(6)
(4)
(4)
(5)
(5)
49 ft or less
Pipe length
(actual length)
Over 49 ft
0
1
5
o t
0
1
8
t
p y
e
0
2
1
o t
0
5
4
t
p y
e
0
7
2
o t
0
9
6
t
p y
e
Model name
w
6
1
R
e
o l
w
1
3
6
R
B
m
o
e r
R
B
Model name
Below 136
136 to below 241
Below 136
136 to below 241
Model name
2
RBM-BT14UL
(5)
(5)
(5)
(5)
Gas side
Liquid side
Ø
/ 3
8"
Ø
/ 1
4"
Ø
/ 1
2"
Ø
/ 1
4"
Ø
/ 1
2"
Ø
/ 1
4"
Ø
/ 5
8"
Ø
/ 3
8"
Ø
/ 7
8"
Ø
/ 1
2"
B
M
B -
Y
5
5
U
L
M
B -
Y
1
0
5
U
L
M
B -
Y
2
0
5
U
L
RBM-HY1043UL
RBM-HY2043UL
RBM-HY1083UL
RBM-HY2083UL
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