To Remove The Spun Pipes - Daikin CO2 Conveni-pack LRYEN10A7Y1 Installer And User Reference Manual

16.3.3 To remove the spun pipes

LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
NOTICE
Take the following precautions on refrigerant piping into account:
▪
Avoid anything but the designated refrigerant to get mixed into the refrigerant
cycle (e.g. air).
▪
Only use R744 (CO₂) when adding refrigerant.
▪
Only use installation tools (e.g. manifold gauge set) that are exclusively used for
R744 (CO₂) installations to withstand the pressure and to prevent foreign
materials (e.g. mineral oils and moisture) from entering the system.
▪
Do NOT leave pipes unattended at the site. If you will finish the work in less than
1 month, tape the pipe ends or pinch the pipe (see figure below). Pipes that are
installed outdoors must be pinched, regardless of the duration of the works.
▪
Use caution when passing copper tubes through walls (see figure below).
NOTICE
Enclose or protect refrigerant piping to avoid damage.
WARNING
Any gas or oil remaining inside the stop valve may blow off the spun piping.
If these instructions are NOT followed correctly it may result in property damage or
personal injury, which may be serious depending on the circumstances.
1 Open the stop valve cap, unlock the valve and check if the valve is closed.
1
1 Remove the valve cap with 2 spanners (counterclockwise).
2 Loosen the packing holder by rotating counterclockwise from 1/8 to 1/2 turn.
3 Close the valve (clockwise).
2 Open the service port cap slowly and check that there is no pressure left.
3 Incrementally loosen the valve core to ensure that there is no pressure left.
4 Cut off the lower part of the gas and liquid stop valve pipes along the black
line. Use only appropriate tools, such as a pipe cutter or pair of nippers.
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Piping installation
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Installer and user reference guide
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