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Application guidelines
Installer reference guide
38
EPGA11~ EAV23DA6V
Daikin Altherma 3 H F
4P606487-1 – 2019.12
A
B
a
e
b
b
c
d
c
A
Main leaving water temperature zone
B
One single room
a
Dedicated Human Comfort Interface (BRC1HHDA used as room thermostat)
b
Non-return valve (field supply)
c
Shut-off valve (field supply)
d
Auxiliary boiler (field supply)
e
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 60°C. To do so:
-
Set the desired water temperature via the auxiliary boiler controller to
maximum 60°C.
-
Install an aquastat valve in the return water flow of the heat pump. Set the
aquastat valve to close above 60°C and to open below 60°C.
▪
Install non-return valves.
▪
Make sure to only have one expansion vessel in the water circuit. An expansion
vessel is already pre-mounted in the indoor unit.
▪
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. See
"7.6.15 To connect the changeover to external heat
96].
▪
To setup the heat emitters, see
"5.2 Setting up the space heating/cooling
26].
Configuration
Via the user interface (configuration wizard):
▪
Set the use of a bivalent system as external heat source.
▪
Set the bivalent temperature and hysteresis.
Changeover to external heat source decided by an auxiliary contact
▪
Only possible in external room thermostat control AND one leaving water
temperature zone (see
"5.2 Setting up the space heating/cooling system"
26]).