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REFRIGERANT PIPE-WORK
WARNING! Indoor coil is pressurised with dry nitrogen, release pressure by depressing red button on indoor pipe connection cap.
If no pressure is present, coil may be damaged, please pressure test before installing.
Pipe-work must be installed in a manner which prevents drainage of liquid into the compressor, and ensures adequate oil return.
Pipes should be at least 3m in length, incorporating at least two direction changes. This will reduce transmission between Indoor and
Outdoor units.
Pipe-work is to be installed according to the Current Code of Good Practice for Refrigeration and Air-conditioning.
• Select pipe-work size from Table.
• Both interconnection lines must be individually insulated (minimum 10mm thickness).
• Do not allow moisture, dust or other foreign particles to enter the pipe-work.
• Only use refrigeration grade copper tubing, suitable for R410A and to Australian Standards.
• Installed pipe-work must be pressure tested to a minimum of 2,000 KPa for at least 1 hour using dry nitrogen
• Pipe work must not be buried underneath the ground.
VERTICAL/HORIZONTAL PIPE-WORK
Maximum vertical rise is 15m (for SCHV-10),
30m (for SCHV12-16), with oil bends every 6m.
Maximum Total length of pipe-work must not exceed 50m.
BRAZING
If brazing of pipe-work is required, dry nitrogen must be used to purge the pipe-work during welding. When brazing close to the flare
nuts, a wet cloth must be used to protect the valves.
FLARING
All flares must be done with a quality flaring tool, suitable for R410A and refrigeration flares.
PIPE-WORK
• Select copper pipes for gas and liquid as specified for the system (refer the pipe table below).
• For dust and moisture protection, before assembly of the pipe and its insulation, both ends of the pipe must be covered.
• Avoid pipe bending as much as possible; if it is necessary to bend, the bending radius must be more than 4cm.
Oil bend
Indoor
Model Number
Indoor / Outdoor
SCHV10D1S / SCHV10DS
SCHV12D1S / SCHV12DS
SCHV14D1S / SCHV14DS
SCHV16D1S / SCHV16DS
Outdoor
Oil bend
Pipe Sizes
Min., Pre, Charge,
Liquid / Vapour
Max., Pipe Length
3.0 - 7.0 - 50.0
5/8
9.53 (
3/8
) / 15.88 (
)
3.0 - 9.5 - 50.0
3/8
3/4
9.53 (
) / 19.05 (
)
SEELEY INTERNATIONAL - INSTALLATION MANUAL |
ILL1997-A
13
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