Haier 2HUM18HC03/R2(DB) [12/16] Caution
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Haier 2HUM18HC03/R2(DB) [12/16] Caution

Haier 2HUM18HC03/R2(DB) [12/16] Caution
2U14CS1ERA
2U18FS1ERA
1.
Tobend a pipe,givetheroundnessaslargeaspossiblenottocrushthepipe,
ƽ
andthebendingradiusshouldbe30to40
mm or longer.
Connecting the pipe of gas side first makes working easier.
ƽ
TheconnectionpipeisspecializedforR410A.ƽ
Half union
Flare nut
Torque wrench
CAUTION:
Be careful that matters, such as wastes of sand
s,water
, etc. shall not enter the pipe.
Spanner
Forced fastening without careful centering may
damagethethreadsandcause a leakageofgas.
Pipe Diameter(ǿ) Fastening torque
Liquid side6.35mm(1/4") 18N.m
Liquid/Gas side9.52mm(3/8") 42 N.m
Gasside12.7mm(1/2") 55N.m
Gasside15.88mm(5/8") 60N.m
Connection of pipes
2.
In case the elevation B is more than 5m,
oil trap shoud be installed every 5~7m
Max. Length:
B1
max
=20m B2
max
=20m
Max.Elevation:
A1
max
=15m
A2
max
=15m
In case the pipe total length (B1+B2) is more than
20m, the refrigerant should be charged, according
to 20 g/m.
B
Outdoor unit
Indoor unit
A1
B1
Indoor unit
A2
B2
Outdoor unit
Indoor unit
B1
Indoor unit
B2
Outdoor unit
Indoor unit
Oil trap
A3
A3
max
=15m
(B1+B2)
max
=30m
Outdoor unit
Indoor unit
A1
B1
Indoor unit
A2
B2
CAUTION
Indoor unit
Becarefulthatmatters,suchaswastesofsands,etc.shallnotenterthepipe.
The standard pipe length of each indoor unit is 5m. If total pipe length is over
20m, the function of the unit will be affected, charge more refrigerant is needed,
according to 20 g/m. But the charge of refrigerant must
be conducted by profes-
sional air conditioner engineer. Before adding additional refrigerant, perform air
purging from the refrigerant pipes and indoor unit using a vacuum pump,then
charge additional refrigerant.
10

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