Installation Procedure
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
Requirement
Overfilling or underfilling of refrigerant will cause compressor
fault. The amount of the added refrigerant shall be as specified
in the instructions.
Connection of refrigerant pipe
Conduct flared connection work to connect all refrigerant pipes.
Pipe cutting and expanding
If the pipe is too long or the flare is damaged, it needs to be cut or expanded.
Pipe expander
A
Allowable pipe length and drop
These parameters differ according to the outdoor unit. See the instruction manual attached
with the outdoor unit for details.
1. Pipe cutting 2. Removing burrs 3.Insertion nut 4. Pipe expansion
Hose
Drain pipe size: Ø19.05mm
2
(3/4") PVC pipe
The hose is used for adjusting the off-center and angle of the rigid PVC pipe.
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
Insulation treatment:
Wrap the hose and its clamp until to the
indoor unit without any clearance with
insulating material, as shown in the figure.
Drain confirmation
During trial run, check that there is no leakage at the pipe connection part during water
draining even in winter.
Hose
Hose clamp
Subsidiary insulation
Insulation
Rigid PVC pipe
16
Pipe material
Model
Phosphorus deoxidized copper seamless pipe (TP
2
M) for air conditioner
Pipe size
(mm)
Gas side
Ø9.52
Liquid side
Ø6.35
Ø12.70
Ø6.35
Ø15.88
Ø9.52
Series 12~14
Series 18-24
Series 07~09
Summary of Contents for MRV 09 Series
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