5 | Operation
User reference guide
20
EWAA004~008D2 + EWYA004~008D2
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688016-1 ā 2022.04
Item Description
a Emergency
Heat pump failure and system operates in Emergency mode
or heat pump is forced off.
b Current date and time
c Smart energy
c1 Smart energy is available via solar panels or smart grid.
c2 Smart energy is currently being used for space heating.
d Space operation mode
Cooling
Heating
e Outdoor / quiet mode
e1
Measured outdoor temperature
(a)
e2 Quiet mode active
e3 Outdoor unit
f Main zone
f1 Installed room thermostat type:
Unit operation is decided based on the ambient temperature
of the dedicated Human Comfort Interface (BRC1HHDA used
as room thermostat).
Unit operation is decided by the external room thermostat
(wired or wireless).
ā No room thermostat installed or set. Unit operation is
decided based on the leaving water temperature regardless
of the actual room temperature and/or heating demand of
the room.
f2 Installed heat emitter type:
Underfloor heating
Fancoil unit
Radiator
f3
Measured room temperature
(a)
f4
Leaving water temperature setpoint
(a)
g Holiday mode
Holiday mode active
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