Daikin EBLA08E23V3, Installation Manual

Page: 15 / 52

6 Electrical installation
Installation manual
15
EBLA04~E23V3 + EDLA04~E23V3
Daikin Altherma 3 M
4P685229-1D – 2022.10
▪ Install freeze protection valves (optional – field supply) at all
lowest points of the field piping.
▪ Normally closed valves (recommended – field supply) can prevent
that all water from indoor piping is drained when the freeze
protection valves open.
NOTICE
When freeze protection valves are installed, set the
minimum cooling setpoint (default=7°C) at least 2°C higher
than the maximum opening temperature of the freeze
protection valve. If lower, freeze protection valves can
open during cooling operation.
For more information, see the installer reference guide.
5.2.4 To fill the domestic hot water tank
See the installation manual of the domestic hot water tank.
5.2.5 To insulate the water piping
The piping in the complete water circuit MUST be insulated to
prevent condensation during cooling operation and reduction of the
heating and cooling capacity.
Outdoor water piping insulation
NOTICE
Outside piping. Make sure the outside piping is insulated
as instructed to protect against hazards.
For piping in free air, it is recommended to use the insulation
thickness as shown in below table as a minimum (with λ=0.039 W/
mK).
Piping length (m) Minimum insulation thickness
(mm)
<20 19
20~30 32
30~40 40
40~50 50
For other cases the minimum insulation thickness can be determined
using the Hydronic Piping Calculation tool.
The Hydronic Piping Calculation tool is part of the Heating Solutions
Navigator
which can be reached via https://
professional.standbyme.daikin.eu .
Please contact your dealer if you have no access to Heating
Solutions Navigator.
This recommendation ensures good operation of the unit, however,
local regulations may differ and shall be followed.
6 Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
CAUTION
Do NOT push or place redundant cable length in the unit.
NOTICE
The distance between the high voltage and low voltage
cables should be at least 50 mm.
6.1 About electrical compliance
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 Guidelines when connecting the
electrical wiring
Tightening torques
Item Tightening torque (N•m)
X1M 2.45 ±10%
X2M 0.88 ±10%
X3M 0.88 ±10%
X4M 2.45 ±10%
X5M 0.88 ±10%
X7M 0.88 ±10%
X9M 2.45 ±10%
X10M 0.88 ±10%
6.3 Connections to the outdoor unit
Item Description
Power supply (main) See "6.3.2 To connect the main power
supply" [
4
17].
Power supply (backup
heater)
(in case of outdoor unit
with integrated backup
heater)
See "6.3.3 To connect the backup heater
power supply" [
4
19].
Backup heater kit +
Bypass valve kit
(in case of external
backup heater kit)
See "6.3.4 External backup heater
kit" [
4
20].
User interface See "6.3.5 To connect the user
interface" [
4
22].
Shut-off valve See "6.3.6 To connect the shut-off
valve" [
4
24].
Electricity meters See "6.3.7 To connect the electricity
meters" [
4
25].
Domestic hot water
pump See "6.3.8 To connect the domestic hot
water pump" [ 4 25].
Alarm output See "6.3.9 To connect the alarm
output" [
4
25].
Space cooling/heating
operation control See "6.3.10 To connect the space cooling/
heating ON/OFF output" [
4
26].
Changeover to
external heat source
control See "6.3.11 To connect the changeover to
external heat source" [
4
26].
Power consumption
digital inputs See "6.3.12 To connect the power
consumption digital inputs" [
4
27].
Safety thermostat See "6.3.13 To connect the safety
thermostat (normally closed
contact)"
[
4
27].
Smart Grid See "6.3.14 To connect a Smart
Grid" [
4
27].