Haier AE072FEAHA Installation Manual - page 10
In installation, if there is refrigerant gas leakage, please take ventilation measures immediately.
The refrigerant gas will generate poisonous gas upon contacting fire.
After installation, please verify that there is no refrigerant leakage. The leaked refrigerant gas
will produce poisonous gas when meeting fire source such as heater and furnace etc.
Allowable pipe length and drop
These parameters differ according to the outdoor unit. See the instruction manual attached
with the outdoor unit for details.
Pipe material and size
Pipe material
Model
Phosphorus deoxidized copper seamless pipe (TP2) for air conditioner
Pipe size
(mm)
Gas side
Liquid side
Recharge refrigerant
The refrigerant supplementation shall be as specified in the installation instructions attached with
the outdoor unit. R22:AE072~242FEAHA.
R407C:AE072~242FEBHA;AE072~242FEBIA.
The adding procedure shall be aided with a measuring meter for a specified amount of supplemented
refrigerant.
Requirement
Overfilling or underfilling of refrigerant will cause compressor fault. The amount of the
added refrigerant shall be as specified in the instructions.
Connection of refrigerant pipe
Conduct flared connection work to connect all refrigerant pipes.
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)
! Caution
Refrigerant piping
AE072-162FEAHA
AE072-162FEBHA
AE072-162FEBIA
AE182-242FEAHA
AE182-242FEBHA
AE182-242FEBIA
Electrical wiring
Vacuum pumping
Open all valves
Gas leakage detection
Insulation treatment
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 insulating material at gas side shall be resistant to a temperature above 120 C
The indoor unit pipe connection part shall be insulated.
The notch upward(Attached detail view)
Indoor unit
Subsidiary insulation tube
Field piping side
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