Daikin VRV IV Series - To Connect the Refrigerant Piping to the Heat Exchanger Unit

16 | Piping installation
Installer and user reference guide
76
RKXYQ5T8+8T7Y1B + RDXYQ5T8+8T7V1B
VRV IV heat pump for indoor installation
4P499898-1B – 2021.12
NOTICE
Precautions when making knockout holes:
▪ Avoid damaging the casing.
▪ After making the knockout holes, we recommend you 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.
4 Connect piping (by brazing) as follows:
8 HP5 HP
d
c
c
d
b
a
b
a
3 1
2
3
2
1
a Liquid line (circuit 1: to heat exchanger unit)
b Gas line (circuit 1: to heat exchanger unit)
c Gas line (circuit 2: to indoor units)
d Liquid line (circuit 2: to indoor units)
1 Pinched piping
2 Piping accessory
3 Field piping
5 Reattach the service cover.
6 Seal all gaps (example: a) to prevent small animals from entering the system.
a
a
a
a
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.
16.2.8 To connect the refrigerant piping to the heat exchanger unit
1 Remove the cover.
2 Remove the 2 insulation pieces.