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MIV V5 Heat Recovery DC Inverter R410A
DM14-01.01.18en
125
Installation
Procedure
12.3.2 Indoor unit powering supply wiring
Note:
Set refrigerant piping system, signal wires between indoor units and signal wires between outdoor units into one system.
Power must unified supply to all indoor units in the one system.
Please do not put the signal wires and power wires in the same wire tube; keep distance between the two tubes. (Keep
distance above 300mm, when current capacity of power supply less than 10A, and Keep distance above 500mm, when current
capacity of power supply less than 50A).
Make sure to address the outdoor unit which is in combination type.
12.4 Control system installation
The control line should be shielded wire. Using other wiring shall create signal interference, thus leading to
error operation.
The shielded nets at the two sides of shielded wires are either grounded to the earth, or connected with each
other and jointed to the sheet metal along to the earth.
Control wire could not be bound together with refrigerant pipeline and power wire. When power wire and
control wire is distributed in parallel form, keep gap between them above 300mm so as to preventing signal
interference.
Control wire could not form closed loop.
Control wire has polarity, so be careful when connecting.
Leakage
protector
Manual
switch
GND
Branch box
Outdoor unit
GND
Outdoor unit
GND
Outdoor unit
GND
Outdoor unit
GND
Outdoor unit
GND
Outdoor unit
Power facilities 1
(with leakage protector)
Power facilities 2
(with leakage protector)
Leakage protector
Manual switch
Branch box
Indoor unit
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
16