Haier AV10IMWEWA Design, Installation & Maintenance Instruction page 4

• Grounding wire should be connected with the grounding bar. The grounding wire can not be connected to the gas
pipe, water pipe, lightening rod or the telephone grounding wire. Improper grounding may cause electric shock.
• Units installed on roof should have appropriate access and handrail.
• Use the wrench to fasten the nut and flare at proper torque. Excessive torque may cause flared section to broke
leading to refrigerant leakage.
• After refrigerant pipe installation, please take nitrogen leakage test to avoid refrigerant leakage.
• R-410A is the only permitted refrigerant.
• To avoid mischarging wrong refrigerant, the check valve diameter is changed for R-410A. To strengthen the pipe, the
flared pipe dimension is also changed. Please use R-410A specified tools as shown below.
R-410A specified tools
1 Gauge manifold
2 Charge hose
3 Electronic weight for charging R-410A
4 Torque wrench
5 Flare tool
6 Copper pipe gauge for adjusting projecting margin
7 Vacuum pump fitting
8 Leakage detector
• When charging refrigerant, the refrigerant must be in liquid state from the tank.
• To prevent EMC interference on other appliances, please keep indoor unit, outdoor unit, power cable and connecting
wire at least 1m away from those appliances.
• Fluorescent lamp (reverse phase or rapid start type) may interfere with the remote controller's signal. Please install
indoor unit away from fluorescent lamp. The farther the better.
CAUTION
Remarks
Range: HP>4.5MPa,LP>2MPa
Pressure: HP 5.3MPa, LP 3.5MPa
No other means permitted
Vacuum pump must be equipped with check valve
Only Helium detector permitted
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