Insulating The Refrigerant Piping - Daikin CO2 Conveni-pack LRYEN10A7Y1 Installer And User Reference Manual

16.5 Insulating the refrigerant piping

LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
After finishing the leak test and vacuum drying, the piping must be insulated. Take
into account the following points:
▪ 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:
- all liquid piping at both the air conditioner and the refrigeration side.
- gas piping at the refrigeration side.
▪ Use heat resistant polyethylene foam which can withstand a temperature of
120°C for gas piping at the air conditioner side.
Insulation thickness
Take the following into account when determining the insulation thickness:
Piping
Liquid piping
Gas piping
Depending on your local weather conditions, you may need to increase the
thickness of the insulation. If the ambient temperature exceeds 30°C and the
humidity exceeds 80%.
▪ Increase the thickness of the liquid piping with ≥5 mm.
▪ Increase the thickness of the gas piping with ≥20 mm.
Insulation sealing
To prevent rain and condensed water entering the unit, add a sealing between the
insulation and the front panel of the unit.
b
a
a
a
b
a
a Sealing material
b Front panel
Mode
Refrigeration
Air conditioner
Refrigeration
Air conditioner
16 Piping installation
|
Minimum temperature
during operation
0°C
20°C
–20°C
0°C
Installer and user reference guide
87