5 Piping installation
Installation manual
17
EBSH/X(B)11+16P30+50DF
Daikin Altherma 3 R ECH
₂
O
4P663483-1A – 2021.11
a
a
c
c
b
1
3
2
a
Screw plug
b
Assembly wrench
c
Spillover connector
2
Insert the spillover connector into the screw plug.
3
Mount the spillover connector.
4
Attach a drain hose to the spillover connector.
5
Connect the drain hose to an appropriate drain. Ensure the
water can flow through the drain hose. Ensure that the water
level cannot mount above the overspill.
6
Connect the drain pan hose to the drain pan connection and
connect to an appropriate drain.
a
a
Drain pan hose
7
Connect the pressure relief valve to an appropriate drain in
accordance with the applicable legislation. Ensure that any
steam or water that may escape is drained in a frost-protected,
safe and observable manner.
a
a
Pressure relief valve
5
Piping installation
5.1
Preparing refrigerant piping
5.1.1
Refrigerant piping requirements
Also see
"4.1.2 Special requirements for R32 units"
8] for
additional requirements.
▪
Piping length:
See
"4.1.1 Installation site requirements of the
▪
Piping material:
Phosphoric acid deoxidised seamless copper.
▪
Piping connections:
Only flare and brazed connections are
allowed. The indoor and outdoor units have flare connections.
Connect both ends without brazing. If brazing should be needed,
take the guidelines in the installer reference guide into account.
▪
Flare connections:
Only use annealed material.
▪
Piping diameter:
Liquid piping
Ø9.5 mm (3/8")
Gas piping
Ø15.9 mm (5/8")
▪
Piping temper grade and thickness:
Outer diameter
(Ø)
Temper grade
Thickness (t)
(a)
9.5 mm (3/8")
Annealed (O)
≥0.8 mm
t
Ø
15.9 mm (5/8")
Annealed (O)
≥1.0 mm
(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.
5.1.2
Refrigerant piping insulation
▪ 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
p
)
Insulation inner
diameter (Ø
i
)
Insulation thickness
(t)
9.5 mm (3/8")
12~15 mm
≥13 mm
15.9 mm (5/8")
17~20 mm
≥13 mm
Ø
i
Ø
i
t
Ø
p
Ø
p