MXZ-5C42NA3 Service Manual
73
Refrigerant pipe diameter is dierent according to indoor unit to be connected. When using extension pipes, refer to the
tables below.
When the diameter of refrigerant pipe is dierent from that of outdoor unit union, use optional Dierent-diameter pipe.
For further information on Dierent-diameter pipe, refer to "PARTS CATALOG".
Unit: inch
Outdoor unit union diameter
For
Indoor unit A
Liquid 1/4
Gas 1/2
Indoor unit B
Liquid 1/4
Gas 3/8
Indoor unit C
Liquid 1/4
Gas 3/8
MAX. REFRIGERANT PIPING LENGTH & PIPE SIZE SELECTION
Piping length each indoor unit (a, b, c) 82 ft. MAX.
Total piping length (a+b+c) 230 ft. MAX.
Bending point for each unit 25 MAX.
Total bending point 70 MAX.
*It is irrelevant which unit is higher.
Operating Range
Indoor intake air temperature Outdoor intake air temperature
Cooling
Maximum 95°FDB, 71°FWB 115°FDB
Minimum 67°FDB, 57°FWB 14°FDB
Heating
Maximum 80°FDB, 67°FWB 75°FDB, 65°FWB
Minimum 70°FDB, 60°FWB -12°FDB, -13°FWB
a
b
Outdoor
unit
Indoor
units
Max. height difference
49 ft.
49 ft.
c
49 ft.
MXZ-3C24NAHZ MXZ-3C24NAHZ2 MXZ-3C24NAHZ3 MXZ-3C24NAHZ4
MXZ-3C30NAHZ MXZ-3C30NAHZ2 MXZ-3C30NAHZ3 MXZ-3C30NAHZ4
OBH702M