MXZ-5C42NA3 Service Manual

73
Refrigerant pipe diameter is di󰀨erent according to indoor unit to be connected. When using extension pipes, refer to the
tables below.
When the diameter of refrigerant pipe is di󰀨erent from that of outdoor unit union, use optional Di󰀨erent-diameter pipe.
For further information on Di󰀨erent-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