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Please read this operation manual before using the air conditioner.
Please keep this manual carefully and safely.
CEILING CONCEALED TYPE AIR CONDITIONER
Operation & Installation
Manual
No. 0010573668
A
Table of Contents
Cautions
Important Points of Safety
Trouble Shooting
When Fault Occurs
Notice to Users
Installation Precautions
Installation Procedure
Installation Check and Trial Run
1-2
3-5
6-7
8
9
10-11
12-17
18
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18
Installation Check and Trial Run
Check if the drain pipe and connection wires are arranged properly.
The drain pipe shall be put below. The connection wire shall be put above. Be sure to wrap
the drain pipe (especially the indoor part and the part inside the machine) with thermal insulating materials.
The drain pipe shall be made into slope. Avoid bulging up or down or phenomena shown
right figure in the run.
Installation check
* Do the supply voltage meet the requirement?
* Could the drainage water completely discharged to outdoor
*Are the power cord and the indoor/outdoor
* Is there any gas leakage at the pipe joints?
*Connection wire connected properly?
* Are the wires pressed firmly?
*Is the noise too big?
*Do the terminal numbers of the indoor/outdoor connection wire coincide with each other?
*Is the pipe connection part thermally insulated?
*Is the indoor unit mounted firmly and reliably?
Trial operation
The installation serviceman must conduct a trial operation and check:
* Does the temperature regulator work normally?
* Does the installation location selection meet the related requirements?
Wrap with the protective plastic tape
Wrap the connection pipe, the drain pipe and the connection wire
together with PVC tape.
Caution:
The connection pipe must be wrapped individually with insulating material from down to up.
1
Cautions
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17
Installation Procedure
Vacuum pumping
With a vacuum pump, create vacuum from the stop valve of the outdoor unit.
Emptying with refrigerant sealed in the outdoor unit is absolutely forbidden.
Open all valves
Open all the valves on the outdoor unit.
Gas leakage detection
Check with a leakage detector or soap water that if there is gas leakage at the pipe
connections and bonnets.
Insulation treatment
Conduct insulation treatment on both the gas side and liquid side of pipes respectively.
During cooling operation, both the liquid and gas sides are cold and thus shall be insulated
so as to avoid dew generation.
The notch upward (Attached detail view)
Indoor unit
Subsidiary insulation tube
Field piping side
2
When the unit have the Return air box (see the following picture) when shipping
from the factory and they are of back-side return air type.
R22:
Series 07
R22:
Series 24
R22:
Series 09-21
R407C:
Series 07-24
Cautions
NOTE
The insulating material at gas side shall be resistant to a temperature above 120*.
The indoor unit pipe connection part shall be insulated.
The connection of indoor unit pipes must use double spanners.
The installing torque shall be as given in the following table.
Double-spanner
operation
Connecting pipe
O.D.(mm)
ÿ6.35
ÿ9.52
ÿ12.70
ÿ15.88
Installing torque
(N-m)
11.8 (1.2kgf-m)
24.5 (2.5kgf-m)
49.0 (5.0 kgf-m)
78.4 (8.0 kgf-m)
Increased installing
torque (N-m)
13.7 (1.4 kgf-m)
29.4 (3.0 kgf-m)
53.9 (5.5 kgf-m)
98.0 (10.0 kgf-m)
Pipe expansion dimensions as follows:
Slope Damage Bur Partial Overlong
Correct
Incorrect
6.35 mm (1/4") 0.8 ~ 1.5
9.52 mm (3/8") 1.0 ~ 1.8
12.7 mm (1/2") 1.2 ~ 2.0
15.88 mm (5/8") 1.4 ~2.2
Pipe diameter ÿ Size A (mm)