Max. Refrigerant Piping Length & Pipe Size Selection - Mitsubishi Electric MSH09TW Service Manual

Operating Range
MXZ30TN MXZ30TN2
Maximum
Cooling
Minimum
Maximum
Heating
Minimum
MAX. REFRIGERANT PIPING LENGTH & PIPE SIZE SELECTION
MXZ30TN MXZ30TN2
Piping length each indoor unit (a, b, c)
Total piping length (a+b+c)
Height difference between units (H)
Bending point for each unit
Total bending point
It does not matter 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 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 page 128.
Indoor unit
class Pipe diameter
Liquid
09
Gas
Liquid
12
Gas
Liquid
15/17
Gas
Please connect the indoor unit and the outdoor unit as shown in the table below.
Outdoor unit Indoor unit
09
A
Liquid {1/4
12
Gas {1/2
15/17
09
B, C
Liquid {1/4
12
Gas {3/8
15/17
Indoor intake air temperature
95˚FDB, 71˚FWB
67˚FDB, 57˚FWB
80˚FDB, 67˚FWB
70˚FDB, 60˚FWB
Extension pipe diameter
1/4 Liquid
3/8 Gas
1/4 Liquid
1/2 Gas
1/4 Liquid
5/8 Gas
Connection method
Liquid {1/4
Use a different-diameter pipe of the option
MAC-455JP ({1/2
Gas {3/8
Liquid {1/4
Indoor unit can be connected directly
Gas {1/2
Liquid {1/4
Use a different-diameter pipe of the option
MAC-456JP ({1/2
Gas {5/8
Liquid {1/4
Indoor unit can be connected directly
Gas {3/8
Liquid {1/4
Use a different-diameter pipe of the option
MAC-454JP ({3/8
Gas {1/2
Liquid {1/4
It is not possible to connect
Gas {5/8
Outdoor intake air temperature
115˚FDB
67˚FDB
75˚FDB, 65˚FWB
17˚FDB, 15˚FWB
Indoor
units
82ft. MAX.
200ft. MAX.
33ft. MAX.
25 MAX.
60 MAX.
1/4
Indoor unit A
3/8
1/4
Indoor unit B
1/2
1/4
Indoor unit C
5/8
{3/8)
{5/8)
{1/2)
16
a
b
Outdoor
unit
c
Outdoor unit union diameter
For
Liquid
Gas
Liquid
Gas
Liquid
Gas
H
H
H
Unit : inch
1/4
1/2
1/4
3/8
1/4
3/8