Restrictions On Refrigerant Pipes; Restrictions On Refrigerant Pipe Length - Mitsubishi Electric PUHY-P250YNW-A Service Handbook

[2-8 Restrictions on Refrigerant Pipes ]

2-8

Restrictions on Refrigerant Pipes

2-8-1

Restrictions on Refrigerant Pipe Length

(1) System with one refrigerant circuit (P500 model)
Length Between outdoor units
Total pipe length (L) from the outdoor unit to
the farthest indoor unit
Height Between indoor and outdoor units
difference
Between outdoor units
(2) System with two refrigerant circuits (P250, P500 models)
Allowable length Total pipe length (L) from the outdoor
unit to the farthest indoor unit
Allowable height Height difference between the indoor
difference and the outdoor units (H)
BS_02_C
Outdoor unit
A B
C
Operation
Outdoor unit
A
L
L
Indoor
Pipe sections Allowable length of pipes
A+B
A(B)+C
(Equivalent length 190 [623] or less)
H 50 [164] or less (40 [131] or less when
the outdoor unit is lower, 15 [49]
when the outdoor temperature is
10°C [50°F] or lower)
h1
L
Indoor
Actual length 165 [541] or less
50 [164] or less (40 [131] or less when the outdoor unit is
lower, 15 [49] when the outdoor temperature is 10°C
[50°F] or lower)
Unit: m [ft]
10 [32] or less
165 [541] or less
0.1 [0.3] or less
Unit: m [ft]
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