Mitsubishi Electric M Series Manual page 507

M series
C.4.4.2 Refrigerant Pipe Length and Pipe Size
MXZ-2B30VA
MAX REFRIGERANT PIPING LENGTH
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.
ADDITIONAL REFRIGERANT CHARGE
Outdoor unit
Refrigerant piping length (one way, 2 unit total)
precharged
(g)
1,150
Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the
tables below.
Indoor unit
class Pipe diameter
Liquid
15/20/22/25
Gas
MXZ-2B40VA
MAX REFRIGERANT PIPING LENGTH
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.
ADDITIONAL REFRIGERANT CHARGE
Outdoor unit
Refrigerant piping length (one way, 2 unit total)
precharged
(g)
1,300
Calculation : Xg = 20 g/m x (Refrigerant piping length (m) - 20)
Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the
tables below.
Indoor unit
class Pipe diameter
Liquid
15/20/22/25/35
Gas
20m
0
Extension pipe diameter
6.35(1/4) Liquid 6.35(1/4)
9.52(3/8) Gas 9.52(3/8)
30m
20m
200
0
Extension pipe diameter
6.35(1/4) Liquid 6.35(1/4)
9.52(3/8) Gas 9.52(3/8)
MULTI SYSTEM Inverter Heat Pump
Indoor
a
units
15m
20m
15
20
b
Outdoor unit union diameter
For
Indoor unit A
Indoor unit B
Indoor
a
units
20m
30m
20
30
b
Outdoor unit union diameter
For
Indoor unit A
Indoor unit B
Outdoor
unit
10m
10m
10m
UNIT: mm (inch)
Liquid 6.35(1/4)
Gas 9.52(3/8)
Liquid 6.35(1/4)
Gas 9.52(3/8)
Max.
Height
difference
Outdoor
unit
15m
15m
10m
UNIT: mm (inch)
Liquid 6.35(1/4)
Gas 9.52(3/8)
Liquid 6.35(1/4)
Gas 9.52(3/8)
C-505