Main Components - Daikin EKHWSU150B3V3 Installation Manual

Main components

H
1
3
4
5
6
7
F
8
9
10
R
11
C
1 Hot water connection
2 Temperature and pressure relief valve
3 Electrical box
4 Electrical box lid
5 Recirculation hole
6 Thermistor socket
7 Flow inlet connection
8 Heat exchanger coil
9 Threaded thermistor hole for use with solar kit option.
Refer to the installation manual of the EKSOLHWAV1
option kit.
10 Return outlet connection
11 Cold water connection
12 Only in case of installing the EKSOLHWAV1 option kit
Cable hole to fit PG nipple and nut for use with solar kit
option. Refer to the installation manual of the
EKSOLHWAV1 option kit.
13 Cable hole to fit PG nipple and nut into for cable
connections of booster heater, power supply and thermal
protection cable.
14 Only in case of installing the EKSOLHWAV1 option kit.
Cable hole to fit PG nipple and nut into for cable
connections of solenoid valve. Refer to the installation
manual of the EKSOLHWAV1 option kit.
15 Only in case of installing the EKSOLHWAV1 option kit.
Cable hole to fit PG nipple and nut into for cable
connections of solenoid valve power supply and solar
pump power supply. Refer to the installation manual of the
EKSOLHWAV1 option kit.
16 Electrical booster heater
17 Anode for corrosion protection
Installation manual
3
Safety devices
 The domestic hot tank relief valve connections should
2
not be used for other purposes.
Do not install heaters without thermal cut-outs.

Thermal protector — The booster heater in the domestic hot

water tank is equipped with a thermal protector (setting 85°C).
For EKUHW2WB only: Secondary thermal protector (solenoid

17
2-way valve) — The thermal protector will close the solenoid
2-way valve (setting 85°C).
Both thermal protectors are activated when the temperature
becomes too high. When activated, the protectors have to be
reset on the domestic hot water tank by pressing the red button
(for access, remove the electrical box lid).
16

12
13

14
15
For EKUHW2WB only: Thermostat (solenoid 2-way valve)

The thermostat will close the solenoid 2-way valve when the
temperature becomes too high (setting 79°C).
Temperature and pressure relief valve

The temperature and pressure relief valve prevents excessive
water temperature (>95°C) and excessive water pressure
(≥10 bar) in the domestic hot water tank.
Expansion relief valve (option kit)

The pressure relief valve prevents excessive water pressure
(≥8 bar) in the water circuit.
NOTICE
Refer to "Installation of the option kit on the domestic hot
water tank" on page 9 for connection of other safety
devices in accordance with relevant local and national
regulations.
Domestic hot water tank with option kit for air to water heat pump
The electrical box lid must only be opened by a
licensed electrician.
Switch off the power supply before opening the
electrical box lid.
EKUHWBB + EKUHW2WB + EKHWSU150-300B3V3
system
4P344370-1B – 2019.08