7
Multi Variable Air Conditioners Ducted Type Indoor Unit
No. 1 2 3 4 5 6
Name Hoisting
Return
air pipe
Ducted type
indoor unit
Return
air vent
Air supply
bent
Air
outlet
Note! Fig.7 only shows the installation of the rear back air vent, but the button back air vent can also
been installed according to the actual installation need. The method of installation is similar to the rear back air
vent’s. The air supply pipe, which is either rectangle or round and connect with the air vent of the indoor unit,
should at least keep one open. The round air pipe should adopt the round preservation pipe to transmit cool
(heat) air to room. The round air pipe should add a transitional pipe, which size should match the one of air
supply vent of the unit. After connecting the transitional pipe, install the round air outlet vent connection pipe,
whose longest length to every individual air outlet vent should be not more than 10m. Ducted type indoor unit
model 70 can share 3 transitional pipe, while model 100,120 can share 4. The transitional pipe, whose straight
length is 200, and the round air outlet connection pipe, whose diameter is 200, produced by our company, can
be ordered separately as standard ttings. Model 50 and the model below do not share the round air vent. The
following is the diagram for how to install the return air pipe.
Note:
① .
The longest length of the air pipe means the general length of the air supply pipe to the farthest air
supply vent plus the general length of the return air pipe to the relative farthest return air vent.
② .
As to the unit with the auxiliary heater, if the return air pipe is needed to be connected, the straight
length of transitional air pipe should not be shorter than 200mm.
No. 1 2 3 4 5 6 7
Name Screw
Return
air pipe
Ducted type
indoor unit
Air vent
Transitional
air pipe
Air supply
pipe
Air outlet
pipe
3.7 Installation of the return air pipe
① .
Preinstall the round air outlet vent on the transitional pipe and x it by screws;
② .
Sheath the transitional air pipe on the air outlet vent and connect it by rivets;
③ .
Sheath the air outlet pipe on round air outlet vent and wrap it tightly by strap, then the connection
with the unit has been nished.
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