8. The attentive matters in installation of air suction and discharging duct
Recommend to use anti-frost and sound-absorbing duct. (locally bought)
The duct installation work should be finished before the fitment of ceiling.
The duct must be heat insulated.
The specific air-discharging outlet should be installed at the place where the airflow can be reasonably distributed.
The surface should leave a checking meatus for checking and maintenance.
Air
Air
Duct
Special air discharging outlet
Use screw bolt to fix
9. The examples of improper installation
Do not use air in duct and take the ceiling inner side instead. The result is because of the irregular outer air mass,
strong wind and sunshine, the humidity is increased.
There may be water drop on the outside of duct. For cement and other new constructions, even if not taking ceiling
inner side as duct, the humidity will also be so high. At this time, use glass fiber to perform heat preservation to the
whole. (use iron net to bind the glass fiber)
Maybe exceeding the unit operation limit (for example: when indoor dry bulb temperature is 35 C, wet bulb tempe
-rature 24 C), it may lead to overload of compressor.
Affected by the capacity of air discharging fan, the strong wind in the outer duct and wind direction,when unit air
sending volume exceeds the limit, the discharged water of heat exchanger will overflow, leading to water leakage.
Air discharging fan
Improper example
10. The operation method of fan controller
Through the fan controller switch in the electric box, the air volume of this unit can be continuously adjusted.
It is unnecessary to adjust air volume through the duct side wind level (unit outside static adjustment).
The air volume set should be in the operation air volume range.
Figure I shows the position of fan controller in the electric box and operation method.
After finishing the electric work, perform test run. According to the main points in Figure II making the chosen switch
No. accordant. And confirm if it reaches the needed air volume.
Note:
1) When operating the fan controller, it is possible to touch the electric charging part, so do cut off the power supply.
2) Do not set the dial at the position less than 1.
3) The figure circled in Figure II indicate the capacity number of fan controller. The non-listed capacity number may
exceed the permitted operation capacity range, so it is impossible to operate.
4) When delivering from factory, the capacity number of fan controller is set at No.5.
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Страница 364: ...MEMO Commercial Air Conditioner ...