haier AD122XLERA - Manual (Page 21)

Supplementary refrigerant
The refrigerant supplementation shall be as specified in the installation instructions attached with
the outdoor unit. The added refrigerant shall be R22.
The adding procedure shall be aided with a measuring meter for a specified amount of
supplemented refrigerant
Pipe cutting and expanding
If the pipe is too long or the flare is damaged, it needs to be cut or expanded.
Allowable pipe length and drop
These parameters differ according to the outdoor unit. See the instruction manual attached with
the outdoor unit for details.
Pipe and insulation material
Hose
Drain pipe size: ÿ19.05mm
2
(3/4") PVC pipe.
The hose is used for adjusting the off-center and angle of the rigid PVC pipe.
Drain confirmation
During trial run, check that there is no leakage at the pipe connection part during water draining
even in winter.
19
Rigid PVC pipe VP31.5mm (internal diameter) Pipe
Foamed PE with thickness above 7mm Insulation
Wrap the hose and its clamp until to the indoor
unit without any clearance with insulating
material, as shown in the figure.
Insulation treatment:
Directly stretch the hose to install without making any deformation.
The soft end of the hose must be fastened with a hose clamp.
Please apply the hose on horizontal part
Hose Hose clamp
Subsidiary insulation
Insulation
Rigid PVC pipe
Requirement
Overfilling or underfilling of refrigerant will cause compressor fault. The amount of the added
refrigerant shall be as specified in the instructions.
1. Pipe cutting 2. Removing burrs 3.Insertion nut 4. Pipe expansion
Instructions to installation