R410A All DC Inverter Mini VRF MCAC-VTSM-2014-10
70 Installation
CAUTION
A disconnection device having an air gap contact separation in all active conductors should be incorporated in
the fixed wiring according to the National Wiring Regulation.
Caution:
Employ an electrical engineer for wiring.
Complete wiring according to national electrical standards.
To reduce interference, use a three-core shielded twisted pair as the outdoor unit signal cable. Do not use
a multi-core cable.
Incorporate the outdoor unit and indoor unit connection wiring system and refrigerant pipe system for the
same system.
The power supply, electric leakage protectors, and manual switches of the indoor units that connect to the
same outdoor unit must be universal. Use the same loop for the indoor unit power. Connect to the same
outdoor unit must be universal. Use the same loop for the indoor unit power supplies in the same system.
Power on/off at the same time.
If the power supply uses a branch loop, install an electricity leakage protector and a manual switch.
Design a dedicated power supply for the indoor unit and outdoor unit.
Indoor/Outdoor Unit Signal Wire
Connect the wire according to their numbers.
Wrong connection may cause malfunction.
Wiring Connection
Seal the wiring connection with the insulation material, or the condensing dew will be caused.
NOTE
The air-conditioners can connect with Central Control Monitor (CCM). Before operation, please wiring correctly and set system.
7. Test Running
Operate according to “key points for test running” on the electric control box cover.
CAUTION
Test running cannot start until the outdoor unit has been connected to the power for 12hours.
Test running cannot start until all the valves are affirmed open.
Never make the test running if the machine has malfunction.
Make sure the communication between the indoor unit and outdoor unit is normal before test running.
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