INVENTOR DR2VI32-09WFI Benutzer- & Installationshandbuch Seite 24

Installation Procedure
1.
1. Piping size DR2VO32-09
DR2VO32-12
DR2VO32-18
DR2VO32-24
●Install the removed flare nuts to the pipes to be connected,then flare the pipes
2. Connection of pipes
To bend a pipe, give the roundness as large as possible not to crush the pipe ,
2. Connection of pipes
and the bending radius should be 30 to 40 mm or longer.
●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
Connecting the pipe of gas side rst makes working easier.
longer.
The connection pipe is specialized for R32.
●Connecting the pipe of gas side first makes working easier.
●The connection pipe is specialized for R32.
Half union
Spanner
Be careful that matters, such as wastes of sand s,water, , etc. shall not enter the pipe.
CAUTION
Be careful that matters, such as wastes of sands,water, etc. shall not enter the pipe.
The standard pipe length is C m. If it is over D m, the function of the unit will be affected. If the pipe has
CAUTION
to be lengthened, the refrigerant should be charged, according to E g/m. But the charge of refrigerant
The standard pipe length is Cm. If it is over Dm, the function of the unit will be affected. If the pipe has to be lengthened, the refrigerant
must be conducted by profes sional air conditioner engineer. Before adding additional refrigerant,
should be charged, according to E g/m. But the charge of refrigerant 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 perform air purging from the refrigerant pipes and indoor unit using a vacuum pump,then
additional refrigerant
additional refrigerant.
Indoor unit
B
A
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Oil trap
A
B
Indoor unit
A
21
22 22
1.
DR2VO32-09
DR2VO32-12
DR2VO32-18
DR2VO32-24
2. Connection of pipes
To bend a pipe, give the roundness as large as possible not to crush th
Connecting the pipe of gas side rst makes working easier.
Half union
Flare nut
The connection pipe is specialized for R32.
Flare nut
Spanner
Torque wrench
Torque wrench
CAUTION
The standard pipe length is C m. If it is over D m, the function of the unit w
to be lengthened, the refrigerant should be charged, according to E g/m.
must be conducted by profes sional air conditioner engineer. Before addi
perform air purging from the refrigerant pipes and indoor unit using a vac
additional refrigerant.
Outdoor unit
Outdoor unit
Indoor unit
B
A
A
Max.Elevation:
In case the elevation A is more
●Max.Elevation: Amax than 5m, oil trap shoud be
installed every 5~7
●In case the elevation A is more than
Max. Length:
Oil trap
5m, oil trap shoud be installed every
B
M i n. Length: B min
5~7
In case the pipe length B is
Indoor unit
more thanDm, the refrigerant
●Max. Length: Bmax
should be charged, according
●Mi n. Length: Bmin
to E g/m.
●In case the pipe length B is more
thanDm, the refrigerant should be
charged, according to E g/m.
21
Ø 6.35x0.65mm
Ø 9.52x0.65mm
Ø 6.35x0.65mm
Ø 12.7x0.7mm
and the bending radius should be 30 to 40 mm or longer.
Forced fastening without careful centering may
damage the threads and cause a leakage of gas.
Half union
Forced fastening without careful centering may damage the
Pipe Diameter( )
threads and cause a leakage of gas.
Liquid side6.35mm(1/4")
Liquid/Gas side9.52mm(3/8")
Pipe Diameter(Ø)
Gas side 12.7mm(1/2")
Liquid side6.35mm(1/4")
Liquid/Gas side9.52mm(3/8")
Gas side 15.88mm(5/8")
Gas side 12.7mm(1/2")
Gas side 15.88mm(5/8") Spanner
Be careful that matters, such as wastes of sand s,water, , etc. sh
DR2VO32-09
DR2VO32-12
DR2VO32-18
B
B
DR2VO32-24
Indoor unit
A
Indoor unit
Indoor unit
B
A
Amax
Outdoor unit
Bmax
Outdoor unit
Oil trap
B
Indoor unit
A
Piping Connection
Ø 6.35x0.65mm
Ø 9.52x0.65mm
Ø 6.35x0.65mm
Ø 12.7x0.7mm
Forced fastening without ca
Flare nut
Fastening torque
damage the threads and ca
18N.m
42 N.m
Fastening torque
Liquid side6.35mm(1/4"
55N.m
18-20N.m
Liquid/Gas side9.52mm(3/
30-35N.m
60 N.m
Gas side 12.7mm(1/2"
35-45N.m
45-55N.m Gas side 15.88mm(5/8
Torque wrench
Bmin
Amax Bmax
10 15 3
10 25
3
Outdoor unit
B
Indoor unit
A
Max.Elevation: Amax
In case the elevation A is more
than 5m, oil trap shoud be
installed every 5~7
Max. Length:
Bmax
M i n. Length: B min
In case the pipe length B is
more thanDm, the refrigerant
should be charged, according
to E g/m.
Pipe Diameter( )
charge
C D E
5 7 20
5 7 DR2VO32-09 20
DR2VO32-12
DR2VO32-18
DR2VO32-24