Single Room - Daikin EWYA004D2V3P Installer's Reference Manual

6 | Application guidelines

6.2.1 Single room

Underfloor heating or radiators – Wired room thermostat
Installer reference guide
26
Setup
A Main leaving water temperature zone
B One single room
a User interface (delivered as accessory)
b Dedicated Human Comfort Interface (BRC1HHDA used as room thermostat)
▪ For more information about connecting the electrical wiring to the unit, see
"9.2 Connections to the outdoor
▪ The underfloor heating or radiators are directly connected to the outdoor unit –
or to the external backup heater kit, if there is one.
▪ The room temperature is controlled by the dedicated Human Comfort Interface
(BRC1HHDA used as room thermostat).
Configuration
Setting
Unit temperature control:
▪ #: [2.9]
▪ Code: [C-07]
Number of water temperature zones:
▪ #: [4.4]
▪ Code: [7-02]
Benefits
▪ Highest comfort and efficiency. The smart room thermostat functionality can
decrease or increase the desired leaving water temperature based on the actual
room temperature (modulation). This results in:
- Stable room temperature matching the desired temperature (higher comfort)
- Less ON/OFF cycles (more quiet, higher comfort and higher efficiency)
- Lowest possible leaving water temperature (higher efficiency)
▪ Easy. You can easily set the desired room temperature via the user interface:
- For your daily needs, you can use preset values and schedules.
- To deviate from your daily needs, you can temporarily overrule the preset
values and schedules, or use the holiday mode.
B
A
a
b
4
unit" [ 76].
2 (Room thermostat): Unit operation
is decided based on the ambient
temperature of the dedicated Human
Comfort Interface.
0 (Single zone): Main
Value
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688013-1B – 2022.09