Midea Forest MOAA31-12CN1-NB8, Technical Manual

 Installation

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 Page 41 

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CORRECT 

Make sure there are no kinks
or dent in drain hose to ensure 
proper drainage.   

NOT CORRECT

Kinks in the drain hose 

will create water traps.

NOT CORRECT

Do not place the end of the 
drain hose in water or in 
containers that collect water. 
This will prevent proper 
drainage.     

NOT CORRECT

Kinks in the drain hose 

will create water traps.

CORRECT 

Make sure there are no kinks
or dent in drain hose to ensure 
proper drainage.   

NOT CORRECT

Kinks in the drain hose 

will create water traps.

NOT CORRECT

Do not place the end of the 
drain hose in water or in 
containers that collect water. 
This will prevent proper 
drainage.     

NOT CORRECT

Kinks in the drain hose 

will create water traps.

PLUG THE UNUSED DRAIN HOLE

To prevent unwanted leaks you must plug the unused 
drain hole with the rubber plug provided.

3.6  Connect signal and power cable

3.6.1  Before performing electrical work, read 

these regulations

1. All wiring must comply with local and national electrical 
codes, and must be installed by a licensed electrician.

2. All electrical connections must be made according to 
the Electrical Connection Diagram located on the panels of 
the indoor and outdoor units.

3. If there is a serious safety issue with the power supply, 
stop work immediately. Explain your reasoning to the 
client, and refuse to install the unit until the safety issue is 
properly resolved.

4. Power voltage should be within 90-110% of rated 
voltage. Insufficient power supply can cause malfunction, 
electrical shock, or fire.

5. If connecting power to fixed wiring, install a surge 
protector and main power switch with a capacity of 1.5 
times the maximum current of the unit.

6. If connecting power to fixed wiring, a switch or circuit 
breaker that disconnects all poles and has a contact 
separation of at least 1/8in (3mm) must be incorporated 
in the fixed wiring. The qualified technician must use an 
approved circuit breaker or switch.

7. Only connect the unit to an individual branch circuit 
outlet. Do not connect another appliance to that outlet.

8. Make sure to properly ground the air conditioner.

9. Every wire must be firmly connected. Loose wiring 
can cause the terminal to overheat, resulting in product 
malfunction and possible fire.

10. Do not let wires touch or rest against refrigerant 
tubing, the compressor, or any moving parts within the 
unit.

11. If the unit has an auxiliary electric heater, it must be 
installed at least 1 meter (40in) away from any combustible 
materials.

12. BEFORE PERFORMING ANY ELECTRICAL OR WIRING 
WORK, TURN OFF THE MAIN POWER TO THE SYSTEM.

3.6.2  Connect signal and power cable

The signal cable enables communication between the 
indoor and outdoor units. You must first choose the right 
cable size before preparing it for connection.

Cable Types:

•  Indoor Power Cable  (if applicable): H05VV-F or 

H05V2V2-F

•  Outdoor Power Cable: H07RN-F