Setting Up An Auxiliary Heat Source For Space Heating - Daikin EWYA004D2V3P Installer's Reference Manual

6 | Application guidelines

6.3 Setting up an auxiliary heat source for space heating

Installer reference guide
36
Setting
In case of heat pump convectors:
External room thermostat for the
additional zone:
▪ #: [3.A]
▪ Code: [C‑06]
Bizone kit installed:
▪ #: [9.P.1]
▪ Code: [E‑0B]
Bizone system type:
▪ #: [9.P.2]
▪ Code: [E‑0C]
Shut-off valve output
Shut-off valve
See "Bizone kit" [ 4 178] 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 fan coil units.
▪ Efficiency.
- Depending on the demand, the outdoor 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.
Value
1 (1 contact): 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.
2 (Yes): A bizone kit is installed in order
to add an additional temperature zone.
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.
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688013-1B – 2022.09