6 Electrical installation
Installation manual
10
ERRA08~12E
Daikin Altherma 3 R MT
4P708481-1 – 2023.02
If the total liquid
piping length is…
Then…
>10 m
R=(total length (m) of liquid
piping–10 m)×0.020
R=Additional charge (kg) (rounded in units
of 0.01 kg)
INFORMATION
Piping length is the one-way length of liquid piping.
5.3.2
To charge additional refrigerant
WARNING
▪ Only use R32 as refrigerant. Other substances may
cause explosions and accidents.
▪ R32 contains fluorinated greenhouse gases. Its global
warming potential (GWP) value is 675. Do NOT vent
these gases into the atmosphere.
▪ When charging refrigerant, ALWAYS use protective
gloves and safety glasses.
Prerequisite:
Before charging refrigerant, make sure the refrigerant
piping is connected and checked (leak test and vacuum drying).
1
Connect the refrigerant cylinder to the service port of the gas
stop valve.
2
Charge the additional refrigerant amount.
3
Open the stop valves.
5.3.3
To fix the fluorinated greenhouse gases
label
1
Fill in the label as follows:
b
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
GWP × kg
1000
=
=
+
kg
=
kg
=
GWP: XXX
RXXX
a
f
c
d
e
a
If a multilingual fluorinated greenhouse gases label is
delivered with the unit (see accessories), peel off the
applicable language and stick it on top of
a
.
b
Factory refrigerant charge: see unit name plate
c
Additional refrigerant amount charged
d
Total refrigerant charge
e
Quantity of fluorinated greenhouse gases
of the total
refrigerant charge expressed as tonnes CO
2
equivalent.
f
GWP = Global Warming Potential
NOTICE
Applicable legislation on
fluorinated greenhouse gases
requires that the refrigerant charge of the unit is indicated
both in weight and CO
2
equivalent.
Formula to calculate the quantity in CO
2
equivalent
tonnes:
GWP value of the refrigerant × total refrigerant
charge [in kg] / 1000
Use the GWP value mentioned on the refrigerant charge
label.
2
Fix the label on the inside of the outdoor unit. There is a
dedicated place for it on the wiring diagram label.
6
Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
Rotating fan.
Before powering ON or servicing the outdoor
unit, make sure that the discharge grille covers the fan as
protection against a rotating fan. See:
▪
"7.3 To install the discharge grille"
▪
"7.4 To remove the discharge grille, and put the grille in
safety position"
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
If the supply cord is damaged, it MUST be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
CAUTION
Do NOT push or place redundant cable length into the unit.
NOTICE
The distance between the high voltage and low voltage
cables should be at least 50 mm.
6.1
About electrical compliance
Only for ERRA08~12E▲V3▼
Equipment complying with EN/IEC 61000‑3‑12 (European/
International Technical Standard setting the limits for harmonic
currents produced by equipment connected to public low-voltage
systems with input current >16 A and ≤75 A per phase.).
6.2
Specifications of standard wiring
components
NOTICE
We recommend using solid (single-core) wires. If stranded
wires are used, slightly twist the strands to consolidate the
end of the conductor for either direct use in the terminal
clamp or insertion in a round crimp-style terminal. Details
are described in "Guidelines when connecting the electrical
wiring" in the installer reference guide.
Component
V3
W1
Power supply
cable
MCA
(a)
29.5 A
9.8 A
Voltage
220-240 V
380-415 V
Phase
1~
3N~
Frequency
50 Hz
Wire size
MUST comply with national wiring
regulation.
3 or 5-core cable
Wire size based on the current, but
not less than 2.5 mm
2
Interconnectio
n cable (indoor
↔ outdoor)
Voltage
220-240 V
Wire size
Only use harmonised wire providing
double insulation and suitable for
applicable voltage.
4-core cable
Minimum 1.5 mm
2
Recommended field fuse
32 A, C curve
16 A or 20 A, C
curve
Earth leakage circuit breaker /
residual current device
30 mA – MUST comply with national
wiring regulation
