Setting Up An Auxiliary Heat Source For Space Heating - Daikin Altherma 3 H HT W EPRA14DAV3 Installer's Reference Manual

6.3 Setting up an auxiliary heat source for space heating

EPRA14~18DAV3+W1 + ETBH/X16EF6V+9W
Daikin Altherma 3 H HT W
4P644736-1 – 2021.02
Setting
Bizone system type:
▪ #: [9.P.2]
▪ Code: [E-0C]
Shut-off valve output
Shut-off valve
4
See "Bizone kit" [ 213] for more information on configuration of the bizone kit.
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 if:
- Space heating is turned ON, and
- DHW tank operation is turned OFF
6 Application guidelines
|
Value
0 (Without hydraulic
separator / no direct pump)
1 (With hydraulic separator /
no direct pump)
2 (With hydraulic separator /
with direct pump)
(See 3 system variations described
above)
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.
Installer reference guide
47