Haier 2U50MEFFRA - Piping Installation

2U40S2SM1FA
2U50S2SM1FA
2U40MEFFRA
2U50MEFFRA
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.
The connection pipe is specialized for R32.
Half union
Flare nut
Torque wrench
CAUTION
Be careful that matters, such as wastes of sand
s,water,
, etc. shall not enter the pipe.
The standard pipe length is Cm. If it is over D m, the function of the unit will be affected. If the pipe
has
to be lengthened, the refrigerant should be charged,
according to E 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 refrigera
nt 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.
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
Min. Length:
B1 min =3m B2 min =3m
In order to connect to 5kw indoor units, you need a pipe adapter,
the diameter size is shown on the drawing:
12.7