Haier ae072fcbka Manuale Utente

17

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 the valves on the outdoor unit.

Check with a leakage detector or soap water that if there is gas leakage at the pipe
connections and bonnets.

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

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)

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)