AUX AL-H12/4R1D, Service Manual

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AUX-Light CAC 50Hz R410A Trouble shooting
105
Maintenance and ventilation space
◇ The site shall be easy for ventilation then the outdoor unit can inhale and discharge air easily. What’s
more please reserve enough space for maintenance.
Note: Require A
＞
300mm; B
＞
1500mm; C
＞
300mm; D
＞
500mm
Outdoor unit installation
◇
Use size M10 bolt and nut to fasten the outdoor unit tightly on the bracket, keep it in the horizontal level.
The suitable length for bolt shall 20mm over the base level, in order to minimize vibration please do set
a rubber shock absorber.
◇
If the outdoor unit is mounted on the wall or on the rooftop, in order to prevent earthquake and strong
wind please fasten it as tightly as possible.
◇
Set a drainage channel to ensure the condensing water can drain out smoothly.
◇
To avoid that only four angles metal sheet to support the outdoor unit.
7.2 Connection piping installation
Piping installation precaution
Please choose the phosphorus deoxidation seamless copper pipe as the piping.
◇
If use the lengthen piping needs welding:
Please welding before fasten the nut, when welding using nitrogen gas to replace the air in the pipe in
order to prevent oxidation.
◇
If there are many points to be welded when installing the lengthen piping, please set a filter in the
pipe(buy from local market)
◇
Please use nitrogen gas or air to remove the dust and water in the pipe,
◇
Please lay out the piping according to the tend towards of the piping, but it is not allowed more than 3
times curved at the same point of the pipe(if do like this the pipe will become rigid)
◇
Pipe bending machine is used during the process of bending the pipe, the curvature shall not be too
small or it will affect the refrigerant flow.
Piping specification selection
As to the detail selection please take reference to the cooling capacity adjust index figure during different
installation situations.
Piping diameter Tighten torque
Expanding size
(A)
Expanding shape Paint the frozen oil
1/4in(φ6.35mm)
15-19(N·m) 8.3-8.7mm
3/8in(φ9.52mm)
35-40(N·m) 12.0-12.4mm
1/2in(φ12.7mm)
50-60(N·m) 15.4-15.8mm
5/8in(φ15.88mm)
62-76(N·m) 18.6-19.0mm
3/4in(φ19.05mm)
70-75(N·m) 22.9-23.3mm