Haier 2U40CEFFRA - Page 24

21
1.
To bend a pipe, give the roundness as large as possible not to crush the pipe ,
and the bending radius should be 30 to 40
mm or longer.
Connecting the pipe of gas side
rst makes working easier.
TheconnectionpipeisspecializedforR32.
Half union
Flare nut
Torque wrench
CAUTION
Be careful that matters, such as wastes of sand
s,water,
, etc. shall not enter the pipe.
ThestandardpipelengthisCm.IfitisoverDm,thefunctionoftheunitwillbeaffected.Ifthepipe
has
to be lengthened, the refrigerant should be charged,
according to Eg/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
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
charge
additional refrigerant.
2.
2U40S2SC1FA 2U50S2SF1FA
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
2U40CEFFRA 2U50FEFFRA
2U14CEFFRA 2U18FEFFRA