Daikin ERGA06DAV3 - Page 35

5 | Application guidelines
Installer reference guide
35
ERGA04~08DAV3(A) + EHVH/X04+08S18+23DA/DJ3V+6V+9W7
Daikin Altherma 3 R F
4P618947-1 – 2020.03
a b c d e f
f
g h j
FHL1
FHL2
FHL3
M
h
i
il
k
m
n
5‒0
a Outdoor unit
b Indoor unit
c Heat exchanger
d Backup heater
e Pump
f Shut-off valve
g Motorised 3‑way valve
h Non-return valve (field supply)
i Shut-off valve (field supply)
j Collector (field supply)
k Auxiliary boiler (field supply)
l Aquastat valve (field supply)
m DHW tank
n Heat exchanger coil
FHL1...3 Underfloor heating
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. 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 "7.9.15 To connect the changeover to external heat
source"[4103].
▪ To setup the heat emitters, see "5.2 Setting up the space heating/cooling
system"[423].