Operating Range; Max. Refrigerant Piping Length & Pipe Size Selection - Mitsubishi Electric MXZ-2B20NA Service Manual

Operating Range

MXZ-2B20NA
Maximum
Cooling
Minimum
Maximum
Heating
Minimum
MAX. REFRIGERANT PIPING LENGTH & PIPE SIZE SELECTION
MXZ-2B20NA
Piping length each indoor unit (a, b)
Total piping length (a+b)
Bending point for each unit
Total bending point
It is irrelevant which unit is higher.
Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the
tables below.
When the diameter of refrigerant pipe is different from that of outdoor unit union, use optional Different-diameter pipe.
For further information on Different-diameter pipe, see the appropriate parts catalog, Optional parts "DIFFERENT
DIAMETER PIPE"(2-1.).
OBH560G
Indoor intake air temperature
95°FDB, 71°FWB
67°FDB, 57°FWB
80°FDB, 67°FWB
70°FDB, 60°FWB
Outdoor intake air temperature
115°FDB
14°FDB
75°FDB, 65°FWB
6°FDB, 5°FWB
82 ft. MAX.
164 ft. MAX.
25 MAX.
50 MAX.
Indoor
a
units
b
Indoor unit A
Indoor unit B
20
Max. height difference
Outdoor
unit
49 ft.
33 ft.
Outdoor unit union diameter
For
Liquid
Gas
Liquid
Gas
49 ft.
Unit: inch
1/4
3/8
1/4
3/8