Setting Up An Auxiliary Heat Source For Space Heating - Daikin Altherma EHFH03S18D 3V Series Installer's Reference Manual

6 | Application guidelines

6.3 Setting up an auxiliary heat source for space heating

Installer reference guide
42
Setting
In case of heat pump convectors:
External room thermostat for the
additional zone:
▪ #: [A.8]
▪ Code: [C-06]
Shut-off valve output
Shut-off valve
At the mixing valve station
Benefits
▪ Comfort.
- The smart room thermostat functionality can decrease or increase the desired
leaving water temperature based on the actual room temperature
(modulation).
- The combination of the two heat emitter systems provides the excellent
heating comfort of the underfloor heating, and the excellent cooling comfort of
the heat pump convectors.
▪ Efficiency.
- Depending on the demand, the indoor unit supplies different leaving water
temperature matching the design temperature of the different heat emitters.
- Underfloor heating has the best performance with the heat pump system.
INFORMATION
Bivalent is only possible in case of 1 leaving water temperature zone with:
▪
room thermostat control, OR
▪
external room thermostat control.
▪ Space heating can be done by:
- The indoor unit
- An auxiliary boiler (field supply) connected to the system
▪ When there is a heating request, the indoor unit or the auxiliary boiler starts
operating. Which of these units operates, depends on the outdoor temperature
(status of the changeover to external heat source). When the permission is given
to the auxiliary boiler, the space heating by the indoor unit is turned OFF.
▪ Bivalent operation is only possible for space heating, NOT for domestic hot water
production. Domestic hot water is always produced by the DHW tank connected
to the indoor unit.
Value
1 (Thermo ON/OFF): When the used
external room thermostat or heat pump
convector can only send a thermo ON/
OFF condition. No separation between
heating or cooling demand.
Set to follow the thermo demand of the
main zone.
If the main zone must be shut off during
cooling mode to prevent condensation
on the floor, set it accordingly.
Set the desired main leaving water
temperature for heating and/or cooling.
ERLA03D + EHFH03S18D
Daikin Altherma 3 R F
4P596806-1C – 2022.09