Preparing Refrigerant Piping; Refrigerant Piping Requirements; Refrigerant Piping Insulation; Preparing Water Piping - Daikin Altherma EVLQ05+08CA Installer's Reference Manual

6 | Preparation

6.3 Preparing refrigerant piping

6.3.1 Refrigerant piping requirements

6.3.2 Refrigerant piping insulation

6.4 Preparing water piping

Installer reference guide
44
INFORMATION
Also read the precautions and requirements in the
4
precautions" [
▪ Piping material: Phosphoric acid deoxidised seamless copper.
▪ Piping diameter:
Liquid piping
Gas piping
▪ Piping temper grade and thickness:
Outer diameter (Ø)
6.4 mm (1/4")
15.9 mm (5/8")
(a)
Depending on the applicable legislation and the maximum working pressure of the unit
(see "PS High" on the unit name plate), larger piping thickness might be required.
▪ Use polyethylene foam as insulation material:
- with a heat transfer rate between 0.041 and 0.052 W/mK (0.035 and
0.045 kcal/mh°C)
- with a heat resistance of at least 120°C
▪ Insulation thickness
Pipe outer diameter (Ø
6.4 mm (1/4")
15.9 mm (5/8")
Ø Ø
i i
Ø Ø
p p
t
If the temperature is higher than 30°C and the humidity is higher than RH 80%, the
thickness of the insulation materials should be at least 20 mm to prevent
condensation on the surface of the insulation.
NOTICE
The unit is only to be used in a closed water system. Application in an open water
circuit can lead to excessive corrosion of the water piping.
6].
Ø6.4 mm (1/4")
Ø15.9 mm (5/8")
Temper grade
Annealed (O) ≥0.8 mm
Annealed (O) ≥1.0 mm
) Insulation inner diameter
p
(Ø )
i
8~10 mm
16~20 mm
EVLQ05+08CAV3 + EHYHBH05AF + EHYHBH/X08AF + EHYKOMB33AA
"1 General safety
(a)
Thickness (t)
Insulation thickness (t)
10 mm
13 mm
Daikin Altherma hybrid heat pump
4P355634-1F – 2020.10
Ø
t