Midea V4 Plus User Manual

R410A DC Inverter VRF V4 Plus W Series 50Hz MCAC-VTSM-2016-04
184 Installation
4. Refrigerant pipe engineering
4.1 Length and drop height permitted of the refrigerant piping
Table.4-1
Permitted value
piping
Pipe length
Total pipe length (Actual)
300m
(Note1)
L1+(L2+L3+ L
4+L5+L6+L7+
L8+L9)×2+a+
b+c+d+e+f+g+
h+i+j
Maximum piping (L1)
Actual length
120m
L1+L5+L8
+L9+j
Equivalent length
150m
Piping (farthest from the first line pipe branch)
equivalent length(L2)
40m(90m,Note2)
L5+L8+L9+j
Drop height
Indoor unit main unit
drop height
Main unit up
H=50m
Main unit down
H=40m
Indoor unit to indoor unit drop height
H=30m
Table.4-2
No
Permitted value
Examples
Piping
1
The size of indoor unit main pipe
should be bigger than the indoor unit
aux. pipe. The indoor unit main pipe
needn't increase when it is equal to
main pipe .
L2~L9 need to increase
the pipe diameter
φ9.52→φ12.7
φ12.7→φ15.9
φ15.9→φ19.1
φ19.1→φ22.2
φ22.2→φ25.4
φ25.4→φ28.6
φ28.6→φ31.8
φ31.8→φ38.1
φ38.1→φ41.3
2
The length of indoor unit aux. pipe is
no longer than 40m.
a,b......j ≤ 40m .
3
The distance difference between
[the main unit to the farthest indoor
unit] and [the main unit to
the nearest indoor unit] is ≤40m.
If the farthest indoor unit
is N10, the nearest indoor
unit
is N1, i.e.(L1+L5+L8+
L9+j）-（L1+L2+L3+a）
≤40m.

Midea V4 Plus Specifications

General

Brand	Midea
Model	V4 Plus
Category	Heat Pump
Language	English