Checking The Refrigerant Piping - Daikin FDMF48AVMK Installation Manual

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NOTICE

Precautions when making knockout holes:

▪ Avoid damaging the casing and underlying piping.

▪ After making the knockout holes, we recommend to

remove the burrs and paint the edges and areas

around the edges using repair paint to prevent rusting.

▪ When passing electrical wiring through the knockout

holes, wrap the wiring with protective tape to prevent

damage.

3 Do the following:

▪ Connect the liquid pipe (a) to the liquid stop valve.

▪ Connect the gas pipe (b) to the gas stop valve.

4 Do the following:

▪ Insulate the liquid piping (a) and the gas piping (b).

▪ Wind heat insulation around the curves, and then cover it

with vinyl tape (c).

▪ Make sure the field piping does not touch any compressor

components.

▪ Seal the insulation ends (sealant etc.) (d).

▪ Wrap the field piping with vinyl tape (e) to protect it against

sharp edges

5 If the outdoor unit is installed above the indoor unit, cover the

stop valves (f, see above) with sealing material to prevent

condensed water on the stop valves from moving to the indoor

unit.

NOTICE

Any exposed piping might cause condensation.

6 Reattach the service cover and the piping intake plate.

7 Seal all gaps (example: a) to prevent snow and small animals

from entering the system.

NOTICE

Do not block the air vents. This could affect air circulation

inside the unit.

WARNING

Provide adequate measures to prevent that the unit can be

used as a shelter by small animals. Small animals that

make contact with electrical parts can cause malfunctions,

smoke or fire.

NOTICE

Make sure to open the stop valves after installing the

refrigerant piping and performing vacuum drying. Running

the system with the stop valves closed may break the

compressor.

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