Connecting The Electrical Wiring; About Connecting The Electrical Wiring; About Electrical Compliance; Precautions When Connecting The Electrical Wiring - Daikin Altherma EPGA16DAV3 Installer's Reference Manual

7.6

Connecting the electrical wiring

7.6.1

About connecting the electrical wiring

Before connecting the electrical wiring
Make sure the water piping is connected.
Typical workflow
Connecting the electrical wiring typically consists of the following
stages:
1 Making sure the power supply system complies with the
electrical specifications of the heat pump.
2 Connecting the electrical wiring to the outdoor unit.
3 Connecting the electrical wiring to the indoor unit.
4 Connecting the main power supply.
5 Connecting the backup heater power supply.
6 Connecting the shut-off valves.
7 Connecting the electrical meters.
8 Connecting the domestic hot water pump.
9 Connecting the alarm output.
10 Connecting the space heating ON/OFF output.
11 Connecting the changeover to an external heat source.
12 Connecting the power consumption digital inputs.
13 Connecting the safety thermostat.
7.6.2

About electrical compliance

Equipment complying with
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.).
Only for the backup heater of the indoor unit
See "7.6.9 To connect the backup heater power supply" on
page 33.
7.6.3 Precautions when connecting the
electrical wiring
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
7.6.4 Guidelines when connecting the electrical
wiring
Keep the following in mind:
▪ If stranded conductor wires are used, install a round crimp-style
terminal on the end of the wire. Place the round crimp-style
terminal on the wire up to the covered part and fasten the terminal
with the appropriate tool.
b a
a Stranded conductor wire
b Round crimp-style terminal
EPGA11~16DAV3 + EAVZ16S18+23DA6V+9W
Daikin Altherma – Low temperature split
4P556075-1 – 2019.02
EN/IEC 61000‑3‑12 (European/
▪ Use the following methods for installing wires:
Wire type
c b
Single-core wire
A
a Curled single-core wire
b Screw
c Flat washer
c b
Stranded conductor
wire with round
crimp-style terminal
a Terminal
b Screw
c Flat washer
O Allowed
X NOT allowed
Tightening torques
Item
M4 (X1M)
M4 (earth)
7.6.5 Specifications of standard wiring
components
Component
(a)
Power supply MCA
cable
Voltage
Phase
Frequency
Wire sizes
Interconnection cable
(b)
Recommended field fuse
Earth leakage circuit breaker
(a) MCA=Minimum circuit ampacity. Stated values are
maximum values (see electrical data of combination with
indoor units for exact values).
(b) The minimum allowed field fuse is 20 A.
NOTICE
It is possible to install a field fuse with lower than
recommended rating over the heat pump. For this you
must modify field setting [2‑0E] according to the maximum
allowed current over the heat pump.
Note that field setting [2‑0E] overrules all power
consumption control settings. Power limiting the heat pump
will reduce performance.
7.6.6 To connect the electrical wiring on the
outdoor unit
1 Remove the switch box cover. See
unit" on page 23.
7 Installation
Installation method
AA´
A´
c
a a
a b c
B
B
a
Tightening torque (N•m)
1.2~1.5
EPGA11~16DAV3
30.7 A
230 V
1~
50 Hz
Must comply with applicable
legislation
Minimum cable section of
1.5 mm² and applicable for 230 V
32 A
Must comply with applicable
legislation
"7.2.2 To open the outdoor
Installer reference guide
31