Haier 2U14CS4ERA - Page 43

14K 18K
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.shallnotenterthepipe.
Spanner
Forced fastening without careful centering may
damage the threads and cause a leakage of gas.
Pipe Diameter() Fastening torque
Liquid side6.35mm(1/4") 18N.m
Liquid/Gas side9.52mm(3/8") 42 N.m
Gas side 12.7mm(1/2") 55N.m
Gas side 15.88mm(5/8") 60 N.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.
Thestandardpipe
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,
accordingto20g/m.Butthechargeofrefrigerant
must
be conducted by professional
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.
Installations
Domestic air conditioner
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