Ekhhp On Heat Pump External Unit, Mains Connection Booster Heater (Boh); Low Tariff Mains Connection (Ht/Nt); Connection Intelligent Controller (Smart Grid - Sg); Optional: External Heat Generator Installation - Daikin EKHHP300A2V3 Manuel D'installation Et D'utilisation

2 x Set-up and installation
2.8.1 EKHHP on heat pump external unit, mains
connection Booster Heater (BOH)
● Check the supply voltage (~230 V, 50 Hz).
● Disconnect the junction box of the domestic installation.
● Install the heat pump external unit.
● Lay the mains and communication cable (4 core, 0.75 mm²)
between heat pump external unit and DAIKIN EKHHP.
● Connect mains and communication cable to heat pump
external unit (see relevant installation instructions).
● Connect DAIKIN EKHHP to the heat pump external unit
(see fig. 2-8).
● Lay the cable (3 core, >1.5 mm²) for the power supply to the
Booster Heater between distributor box of the house instal-
lation and the DAIKIN EKHHP.
● Connect the cable for power supply on the Booster Heaters to
the DAIKIN EKHHP (see fig. 2-8).
● Connect the cable for power supply to the Booster Heater on
the distributor box of the house installation (see fig. 2-8).
ERWQ02AV3 Heat pump external unit
Fig. 2-8 Electrical connection DAIKIN EKHHP
When switching off the heat pump external unit using a
switching system prescribed by the energy supply com-
pany (EVU), the DAIKIN EKHHP is switched off as well.
This complete switch-off of the heat pump external unit
is an optional installation and must only be carried out
by experts.

2.8.2 Low tariff mains connection (HT/NT)

If the external unit is connected to a low tariff mains connection,
the potential-free switch contact 4 of the receiver that eval-
uates the low tariff input signal transmitted by the electricity
supply company (EVU) must be connected to the connections
GND/IN1 of the DAIKIN EKHHP (see fig. 2-9).
When setting the parameter [7-00] > 0 certain system compo-
nents are switched off during high tariff times (see operating in-
structions for the controller).
The potential-free switching contact GND/IN1 can be designed
as a normally-closed or a normally-open switching contact.
a) If it is configured as a normally-open switching contact,
then the parameter [7-00] = 1 must be set.
If the EVU transmits the reduced tariff signal, the switching
contact HT/LT is closed. The installation switches to
"Reduced Mode". If the signal is sent again, the potential-free
switching contact HT/LT opens and the system resumes
operation.
Installation and maintenance manual
14
b) If it is configured as a normally-closed switching contact,
then the parameter [7-00] = 2 must be set.
If the EVU transmits the reduced tariff signal, the switching
contact HT/LT is opened. The installation switches to
"Reduced Mode". If the signal is sent again, the potential-free
switching contact HT/LT closes and the system resumes
operation.
HT/NT Low tariff mains connection (EVU receiver)
SG Smart Grid - connection (EVU receiver)
GND+IN1 Connection HT/NT-swiych contact on EKHHP
GND+IN2 Connection Smart Grid-switch contact on EKHHP
X2M Terminal rail on EKHHP
Fig. 2-9 Electrical connection HT/NT- and Smart Grid switching con-
tact
2.8.3 Connection intelligent controller (Smart Grid -
SG)
Once the function is activated by the parameter [7-00] = 3 (see
section 5.5.2), the heat pump is changed to Stand-By, Normal or
an operating mode with higher temperatures, depending on the
signal from the energy supply company.
For this you need to connect the potential-free switching con-
tacts HT/NT + SG of the intelligent regulator to the connections
(GND+IN1) / (GND+IN2) on the DAIKIN EKHHP (see fig. 2-9).
As soon as the Smart Grid function is active, the HT/NT function
is deactivated automatically. Depending on the value of the pa-
rameter [7-00] the heat pump is operated in a different manner
(see operating manual for the controller).

2.8.4 Optional: External heat generator installation

When using an external heat generator, this can be connected
using a potential-free switching contact (NT/LT) on the DAIKIN
EKHHP.
If the potential-free switching contact is closed by an external
heat generator, the DAIKIN EKHHP reduces its own heat gener-
ation to allow the external heat generator have priority (for set-
tings see chapter 5.5.2).
GND Connection potential-free switching contact on EKHHP
IN1 Connection potential-free switching contact on EKHHP
WEX External heat generator
X2M Terminal rail on EKHHP
Fig. 2-10 External heat generator electrical connection
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_02 – 09/2015