Toshiba SMMS-u MMY-MUP0801HT8 Quick Reference page 111

No. Piping parts
Outdoor unit
(1)
Outdoor unit
connection
piping kit
Between
Outdoor unit
(2)
connection
piping kit
Outdoor unit
connection
piping kit of
header unit
First branching
section
(3)
Outdoor unit
First branching
section
*1 Maximum length for the main piping is 30 m.
*2 If the length for main piping is extended up to 70 m, change the liquid side piping size to Ø25.4 (one size up).
*3 It is possible to change pipe size from Ø41.8 to Ø38.1, if it is available at size.
Name
Connecting pipe size of outdoor unit
MMY-MUP080
MMY-MUP100
Outdoor unit MMY-MUP120
connecting
MMY-MUP140
pipe
MMY-MUP160
MMY-MUP180
MMY-MUP200
MMY-MUP220
MMY-MUP240
Pipe size for connecting piping between outdoor units
Total capacity codes of
the total outdoor units at
the downstream side
Main
to capacity (HP)
connecting
piping between
outdoor units
Size of main piping
Total capacity
codes of all
outdoor units
Equivalent to
capacity (HP)
10
12
14 to 18
Main piping
20
22
24 to 26
28 to 34
36 to 42
44 to 52
54
56 to 60
62 to 74
76 to 92
94 or more
Selection of pipe size
Type Gas side
19.1
22.2
28.6
28.6
28.6
28.6
28.6
28.6
34.9
Gas side
Equivalent
16 to 20
22
24
26 to 34
36 to 60
62 to 74
76 or more
Gas
side
Standard
Pipe
8 19.1 12.7
22.2 12.7
28.6 12.7
28.6 15.9
28.6 15.9
28.6 19.1
34.9 19.1
34.9 19.1
41.3 22.2
*3
41.3 22.2
*3
41.3 22.2
41.3 22.2
44.5 22.2
54.0 22.2
54.0 22.2
*1*2
4
Liquid side
12.7
12.7
12.7
15.9
15.9
15.9
15.9
19.1
19.1
Liquid side
28.6 15.9
28.6 19.1
34.9 19.1
34.9 19.1
41.3 22.2
44.5 22.2
54.0 22.2
Liquid side
Refrigerant
Allowable
saving
Length
pipe size
9.5 30 m
9.5 30 m
- -
12.7 50 m
- -
15.9 80 m
15.9 80 m
- -
19.1 80 m
19.1 50 m
19.1 50 m
- -
- -
- -
- -
Remarks
Same as connecting
pipe size of the
outdoor unit.
Pipe size differs
based on the total
capacity code value
of outdoor units.
Pipe size differs
based on the total
capacity code value
of outdoor units.
If the allowable
length has the
allowable value or
less, the refrigerant
saving pipe size can
be selected.