Setting Up The Domestic Hot Water Tank; System Layout - Integrated Dhw Tank; System Layout - Standalone Dhw Tank - Daikin ERHQ011BA Installer's Reference Manual

5 Application guidelines
Install the digital I/O PCB (option EKRP1HB).
Connect X1 and X2 (changeover to external heat source) on the
PCB to the auxiliary boiler thermostat.
To setup the heat emitters, see setting up the space
heating/cooling application guidelines).
Configuration
Via the user interface (quick wizard):
Set the use of a bivalent system as external heat source.
Set the bivalent temperature and hysteresis.
NOTICE
Make sure the bivalent hysteresis has enough
differential to prevent frequent changeover between
indoor unit and auxiliary boiler.
Because the outdoor temperature is measured by the
outdoor unit air thermistor, install the outdoor unit in
the shadow so that it is NOT influenced or turned
ON/OFF by direct sunlight.
Frequent changeover may cause corrosion of the
auxiliary boiler. Contact the manufacturer of the
auxiliary boiler for more information.
Changeover to external heat source decided by an auxiliary
contact
Only possible in external room thermostat control AND one
leaving water temperature zone (see setting up space
heating/cooling application guideline).
The auxiliary contact can be:
An outdoor temperature thermostat
An electricity tariff contact
A manually operated contact
...
Setup: Connect the following field wiring:
L
H Com
Indoor/Auto/Boiler
A
K1A K2A
N
B Boiler thermostat input
TI
A Auxiliary contact (normal closed)
H Heating demand room thermostat (optional)
K1A Auxiliary relay for activation of indoor unit (field supply)
K2A Auxiliary relay for activation of boiler (field supply)
Indoor Indoor unit
Auto Automatic
Boiler Boiler
NOTICE
Make sure the auxiliary contact has enough differential
or time delay to prevent frequent changeover between
indoor unit and auxiliary boiler.
If the auxiliary contact is an outdoor temperature
thermostat, install the thermostat in the shadow so that
it is NOT influenced or turned ON/OFF by direct
sunlight.
Frequent changeover may cause corrosion of the
auxiliary boiler. Contact the manufacturer of the
auxiliary boiler for more information.
Installer reference guide
13
Indoor
B TI
X2M
1 2 3 4 X Y
K1A K2A
5.4

Setting up the domestic hot water tank

The DHW tank can be:
Integrated in the indoor unit
Installed standalone as option
5.4.1 System layout – Integrated DHW tank
UI
a b c d f h
M
e
g
a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Pump
f Motorised 3-way valve
g DHW tank
h Shut-off valve
i Collector (field supply)
FHL1...3 Under floor heating
UI User interface
5.4.2 System layout – Standalone DHW tank
a b c d e f
f
a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Pump
f Shut-off valve
g Motorised 3-way valve
h Collector (field supply)
i DHW tank
j Heat exchanger coil
FHL1...3 Under floor heating
h i
FHL1
FHL2
FHL3
g h
M
FHL1
FHL2
i j
FHL3
Daikin Altherma - Low Temperature Split
4P313776-1 – 2012.05
EHBH/X16