Danfoss Optyma OP-UPAC015COP04E, Инструкции по применению

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3. Liquid piping
• Install the liquid solenoid valve just before the expansion valve.
• If the liquid feed piping is overheated by the effect of other heat source, it generates flash gas, reducing the cooling capacity. Run the
liquid feed piping at a place as cool as possible. Where it passes at a place at high temperature by any chance, insulate it.
4. Pipe bending
When bending a pipe, it is necessary to compensate for possible thinning of pipe wall by bending, where the bending radius R is 4 times
of pipe O.D., or less, at the center line of pipe being bent.
When a pipe is bent, it could cause creases, reduced wall thickness, or increased resistance in refrigerant flow. It is recommended to make
the pipe bending radius R to be 3 times of pipe O.D., or more, at the center line of pipe being bent.
Downward slope
Eliminate trap.
Downward slope
Piping work at site
1. Pipe diameter
Prepare refrigerant pipes at site. Pipe joints are as shown below.
2. Suction pipe
• Normally, adjust the pipe size to the end diameter of copper pipe at the joint of condensing
unit.
• Provide a downward slope (1/200 to 1/250) at the sidewise run of suction pipe. To return
lubrication oil smoothly, do not provide a trap at the sidewise run section. Where heights
differ larger than 5 m between the condensing unit and the low pressure device, provide
a small trap.
Pipe dia.
Pipe dia.
Pipe prepared at site
Pipe connection
via socket
Type
Connecting pipe dia. (Example) (mm)
Suction pipe Liquid pipe
OP-UPAC015COP04E Ø19.05 (Brazing) Ø12.7 (Brazing)
*Pipe wall thickness shows that of C1220T 1/2H.
Center line
R
Pipe O.D.(mm)
Wall thickness (mm)
With bend Without bend
Ø12.7 1.0, or more 0.8, or more
Ø15.88 1.2, or more 1.0, or more
Ø19.05 1.4, or more 1.2, or more
Ø 25.4 1.8, or more 1.8, or more
* In case of pipe material: C1220T 1/2H.
Dimension
4. Installation
Fig. 16
Fig. 17
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AB408540130380en-000102 © Danfoss | Climate Solutions | 2023.02
Application Guidelines