6.3 Preparing refrigerant piping
6.3.1 Refrigerant piping requirements
6.3.2 Refrigerant piping insulation
6.4 Preparing water piping
ERGA04~08DAV3(A) + EHVH/X04+08S18+23DA/DJ3V+6V+9W7
Daikin Altherma 3 R F
4P618947-1 – 2020.03
INFORMATION
Also read the precautions and requirements in the "General safety precautions"
chapter.
▪
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")
Annealed (O)
15.9 mm (5/8")
Annealed (O)
(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.
▪
Valve towards expansion vessel. The valve towards the expansion vessel (if
equipped) MUST be open.
Ø6.4 mm (1/4")
Ø15.9 mm (5/8")
Temper grade
≥0.8 mm
≥1.0 mm
) Insulation inner diameter
p
(Ø
)
i
8~10 mm
16~20 mm
6
Preparation
|
(a)
Thickness (t)
Insulation thickness (t)
10 mm
13 mm
Installer reference guide
Ø
t
55