Trane NTXWPH A Series Service Manual page 29

Operating Range
NTXMMX20A122AA
Maximum
Cooling
Minimum
Maximum
Heating
Minimum
MAX. REFRIGERANT PIPING LENGTH & PIPE SIZE SELECTION
NTXMMX20A122AA
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, refer to "PARTS CATALOG".
OBHT702
Indoor intake air temperature Outdoor intake air temperature
95°FDB, 71°FWB
67°FDB, 57°FWB
80°FDB, 67°FWB
70°FDB, 60°FWB
82 ft. MAX.
164 ft. MAX.
25 MAX.
50 MAX.
115°FDB
14°FDB
75°FDB, 65°FWB
6°FDB, 5°FWB
Indoor
a
units
b
Indoor unit A
Indoor unit B
29
Max. height difference
Outdoor
unit
49 ft.
49 ft.
33 ft.
Outdoor unit union diameter
For
Liquid
Gas
Liquid
Gas
Unit: inch
1/4
3/8
1/4
3/8