35
●
Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the
tables below.
●
When 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 15-1.
Indoor unit
Extension pipe diameter
class
Pipe diameter
Liquid
1/4
Liquid
1/4
09
Gas
3/8
Gas
3/8
Liquid
1/4
Liquid
1/4
12
Gas
3/8
Gas
3/8
Liquid
1/4
Liquid
1/4
15
Gas
3/8
Gas
3/8
Liquid
1/4
Liquid
1/4
17
Gas
1/2
Gas
1/2
Liquid
1/4
Liquid
1/4
24
Gas
5/8
Gas
5/8
Outdoor unit union diameter
For
Liquid
1/4
Indoor unit A
Gas
1/2
Liquid
1/4
Indoor unit B
Gas
3/8
Liquid
1/4
Indoor unit C
Gas
3/8
Liquid
1/4
Indoor unit D
Gas
3/8
Unit : inch
Piping length each indoor unit (a, b, c, d)
82ft. MAX.
Total piping length (a+b+c+d)
230ft. MAX.
Bending point for each unit
25 MAX.
Total bending point
70 MAX.
❋
It does not matter which unit is higher.
MAX. REFRIGERANT PIPING LENGTH & PIPE SIZE SELECTION
MXZ-4A36NA
Operating Range
MXZ-4A36NA
a
b
c
d
Outdoor
unit
Indoor
units
49ft.
33ft.
49ft.
Cooling
Heating
Maximum
Minimum
Maximum
Minimum
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
14˚FDB, 12˚FWB
OB444C--2.qxp 07.10.18 2:32 PM Page 35
Summary of Contents for MXZ-2A20NA
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