To Insulate The Water Piping; Electrical Installation; About Electrical Compliance; Guidelines When Connecting The Electrical Wiring - Daikin ETSH12P30EF Installation Manual

6 Electrical installation

b
a
b
a Drainback connection
b Spillover connection
c Hose with non-return valve (1/2")
With installed drainback solar kit (option)
1 Combine the fill and drain kit (option) with the drainback solar
kit (option) to fill the storage tank.
2 Connect the hose with non-return valve to the fill and drain kit.
Follow the steps described in the previous chapter.
5.2.7

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
See the installation manual of the outdoor unit, or the installer
reference guide.
Installation manual
14
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 into the unit.
NOTICE
The distance between the high voltage and low voltage
cables should be at least 50 mm.
c
6.1

About electrical compliance

Only for the backup heater of the indoor unit
See "6.3.3 To connect the backup heater power
6.2 Guidelines when connecting the
a
electrical wiring
Tightening torques
Indoor unit:
M4 (X1M)
M4 (X12M, X15M)
Indoor unit – BUH option:
M4 (X6M) *3V, *6V
M4 (X6M) *9W
6.3

Connections to the indoor unit

Item
Power supply (main)
Power supply (backup
heater)
Backup heater
Shut-off valve
Electricity meters
Domestic hot water
pump
Alarm output
Space cooling/heating
operation control
Changeover to
external heat source
control
Power consumption
digital inputs
Safety thermostat
Smart Grid
Item Tightening torque (N•m)
0.88 ±10%
Item Tightening torque (N•m)
2.45 ±10%
Description
See "6.3.2 To connect the main power
supply" [ 4 16].
See "6.3.3 To connect the backup heater
supply" [ 4 17].
power
See "6.3.4 To connect the backup heater to
unit" [ 4 19].
the main
See "6.3.5 To connect the shut-off
valve" [ 4 19].
See "6.3.6 To connect the electricity
meters" [ 4 20].
See "6.3.7 To connect the domestic hot
pump" [ 4 20].
water
See "6.3.8 To connect the alarm
output" [ 4 21].
See "6.3.9 To connect the space cooling/
output" [ 4 21].
heating ON/OFF
See "6.3.10 To connect the changeover to
source" [ 4 22].
external heat
See "6.3.11 To connect the power
inputs" [ 4 22].
consumption digital
See "6.3.12 To connect the safety
thermostat (normally closed
contact)" [ 4 23].
See "6.3.13 To connect a Smart
Grid" [ 4 24].
Daikin Altherma 3 H MT ECH₂O
supply" [ 4 17].
1.2
1.2
ETSH/X(B)12P30+50EF
4P663479-1A – 2022.07