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Application guidelines
Installer reference guide
48
▪
Domestic hot water is always produced by the DHW tank connected to the
indoor unit.
INFORMATION
▪
During heating operation of the heat pump, the heat pump operates to achieve
the desired temperature set via the user interface. When weather-dependent
operation is active, the water temperature is determined automatically
depending on the outdoor temperature.
▪
During heating operation of the auxiliary boiler, the auxiliary boiler operates to
achieve the desired water temperature set via the auxiliary boiler controller.
Setup
▪
Integrate the auxiliary boiler as follows:
A
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.
B
e
c
d
c
b
b
a
EPRA14~18DAV3+W1 + ETBH/X16EF6V+9W
Daikin Altherma 3 H HT W
4P644736-1 – 2021.02