Mitsubishi Electric PAA-A18AA1 Manuel D'installation page 24

PAA-series connection
Maximum piping length
Maximum total piping with PAA connection depends on the number of PAA indoor units connected. Please
refer to the table below for the appropriate total maximum piping length the system can be designed to.
Minimum piping length
For branch box systems where PAA is the only unit(s) connected, the minimum piping length to each PAA
unit from the outdoor unit should be 33 ft.
Model
MXZ-SM36/48NAM
MXZ-
SM36/42/48NAMHZ
MXZ-SM60NAM
The above chart is for M-Series. For P-Series, follow guidelines in the P-Series outdoor unit installation
manual.
NOTE
For extended piping lengths, please refer to Diamond System Builder (DSB).
Specifications are subject to change without notice.
PAA-A18, 24, 30, 36, 42AA1/BA1/CA1
Total
Connected
No PAA
Indoor
unit
Capacity
connected
(kBtu/h)
<27 492 ft
(150 m)
28-54 492 ft
(150 m)
>55 492 ft
(150 m)
<27 492 ft
(150 m)
28-54 492 ft
(150 m)
>55 492 ft
(150 m)
24
Number of PAA units connected
1 2
492 ft Not able to connect 2
or more PAAs for less
(150 m)
than 27 kBtu/h
341 ft 276 ft
(104 m) (84 m)
308 ft 243 ft
(94 m) (74 m)
492 ft Not able to connect 2
or more PAAs for less
(150 m)
than 27 kBtu/h
408 ft 361 ft
(124 m) (110 m)
384 ft 337 ft
(117 m) (103 m)
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3 or more
276 ft
(84 m)
243 ft
(74 m)
337 ft
(103 m)
314 ft
(96 m)