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9.Install outlet flange
Install outlet flange according to the needs, the outlet flange is standard component, bolts are laid in accessories
box.
Note: You can select not to connect with the flange. Instead of it, you can use the round plastic air outlet (purchased
by user)
10. Examples for Bad Installation
• The unit is not equipped with the air return pipe and the inner side of the suspending ceiling is used as the blast
pipe, causing the humidity increasing due to irregular air mass, strong wind or sunlight from the outside world.
• There might be condensate dropping down at the outer side of the blast pipe. The humidity is high, even if the
inner side of the suspended ceiling isn’t used as a blast pipe in new concrete buildings. At this time, the whole
body should use the thermo wool for heat preservation (the thermo wool can be packed with a steel wire).
• It is operated under the conditions beyond the limits, leading to the overload of the compressor.
• Affected by the capacity of the exhaust fan, and the strong wind and wind direction in the outer flue, when the
blowing quantity of the air conditioner exceeds the limits, the drained water of the heat exchanger will overflow,
causing water leakage.
11. Static Pressure GradeSetting
12. Refrigerant Tube
Tubing Permissible Length & Height Difference
Piping Materials & Heat Insulating Materials
Please refer to the attached manual of outdoor units.
As to prevent condensation, heat insulating treatment should be
performed. The heat insulating treatment for gas and liquid piping
should be done respectively.
For MVAH036~048MV2AA units, after installation need to
preliminary estimates external static pressure, according to the
external static pressuresetting the unit's static pressure grade by
controller.
Note: the detail operation methods for setting the unit's static
pressure grade refer to the controller manual.
The static pressure range of each gradeas
follows:
Piping
Material
Hard PVC tube
VP1in(inner bore)
Heat Insulating
Material
Vesicant polythene
thickness: over 1/4in
Grade
Static pressure range
1
0~25pa
2
25~75pa
3
75~125pa
4
125~175pa
5
175~200pa
Exhaust fan
Example of bad installation
ceiling
