To Insulate The Refrigerant Piping - Daikin VRV 5 RXYA8A7Y1B Installer And User Manual

18 | Piping installation

18.3.6 To insulate the refrigerant piping

Installer and user reference guide
114
After finishing the leak test and vacuum drying, the piping must be insulated. Take
into account the following points:
▪ Make sure to insulate the connection piping and refrigerant branch kits entirely.
▪ Be sure to insulate the liquid and gas piping (for all units).
▪ Use heat resistant polyethylene foam which can withstand a temperature of 70°C
for liquid piping and polyethylene foam which can withstand a temperature of
120°C for gas piping.
▪ Reinforce the insulation on the refrigerant piping according to the installation
environment.
Ambient temperature
≤30°C
>30°C
Between outdoor and indoor unit
NOTICE
It is recommended that the refrigerant piping between indoor and outdoor unit is
installed in a ducting or the refrigerant piping is wrapped with finishing tape.
1 Insulate and fix the refrigerant piping and cables as follows:
a
c
d
a Liquid piping
b Gas piping
c Equalising piping
d Finishing tape
e Interconnection cable (F1/F2)
f Insulation
2 Install the service cover.
Inside the outdoor unit
To insulate the refrigerant piping, proceed as follows:
a Sealant
b Insulation
c Vinyl tape around curves
d Vinyl tape against sharp edges
1 Insulate the gas, liquid, and equalising piping.
Humidity
75% to 80% RH
≥80% RH
f
b
e
a
b
c
d
Minimum thickness
15 mm
20 mm
a
d
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12