Daikin Altherma 3 GEO Series - Page 37

5 | Application guidelines
Installer reference guide
37
EGSAH/X06+10UDA9W
Daikin Altherma 3 GEO
4P598592-1A – 2019.12
Setup
▪ Integrate the auxiliary boiler as follows:
B
A
b
a
c
c
d
e
f
d
g
A Main leaving water temperature zone
B One single room
a Dedicated Human Comfort Interface (BRC1HHDA used as room thermostat)
b Remote outdoor sensor
c Non-return valve (field supply)
d Shut-off valve (field supply)
e Auxiliary boiler (field supply)
f Auxiliary boiler thermostat (field supply)
g Aquastat valve (field supply)
NOTICE
▪ Make sure the auxiliary boiler and its integration in the system complies with
applicable legislation.
▪ Daikin is NOT responsible for incorrect or unsafe situations in the auxiliary boiler
system.
▪ Make sure the return water to the heatpump does NOT exceed 55°C. To do so:
- Set the desired water temperature via the auxiliary boiler controller to
maximum 55°C.
- Install an aquastat valve in the return water flow of the heat pump. Set the
aquastat valve to close above 55°C and to open below 55°C.
▪ Install non-return valves.
▪ Make sure to only have one expansion vessel in the water circuit. The indoor unit
does NOT contain an expansion vessel.
▪ Install the digital I/O PCB (option EKRP1HBAA).
▪ Connect X1 and X2 (changeover to external heat source) on the digital I/O PCB to
the auxiliary boiler thermostat. See "8.2.8To connect the changeover to external
heat source"[494].
▪ To setup the heat emitters, see "5.2 Setting up the space heating/cooling
system"[424].
Configuration
Via the user interface (configuration wizard):
▪ Set the use of a bivalent system as external heat source.
▪ Set the bivalent temperature and hysteresis.