Daikin EWYA004D2V3P Installer's Reference Manual page 131

EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P688013-1B – 2022.09
If...
▪ Space heating/cooling=On, and
▪ The external room thermostat is
"Thermo OFF", and
▪ Outdoor temperature drops below
6°C
▪ Space heating/cooling=On, and
▪ The external room thermostat is
"Thermo ON"
In case of 2 leaving water temperature zones:
If...
▪ Space heating/cooling=Off,
and
▪ Outdoor ambient temperature drops
below 6°C
▪ Space heating/cooling=On, and
▪ Operation mode=Heating, and
▪ The external room thermostat is
"Thermo OFF", and
▪ Outdoor temperature drops below
6°C
▪ Space heating/cooling=On, and
▪ Operation mode=Cooling
Room thermostat control ([C‑07]=2)
During room thermostat control, room frost protection [2‑06] is guaranteed when
activated. If so, and the room temperature drops below the room antifrost
temperature [2‑05], the unit will supply leaving water to the heat emitters to heat
up the room again.
# Code
[1.4.1] [2-06]
[1.4.2] [2-05]
INFORMATION
When the dedicated Human Comfort Interface (BRC1HHDA used as room
thermostat) is disconnected (because of incorrect wiring or damage of the cable),
then room frost protection is NOT guaranteed.
▪ The unit will supply leaving water to
the heat emitters to heat up the room
again, and
▪ the temperature setpoint of the
leaving water will be lowered.
Room frost protection is guaranteed by
the normal logic.
▪ The unit will supply leaving water to
the heat emitters to heat up the room
again, and
▪ the temperature setpoint of the
leaving water will be lowered.
▪ The unit will supply leaving water to
the heat emitters to heat up the room
again, and
▪ the temperature setpoint of the
leaving water will be lowered.
There is no room frost protection.
Description
Activation:
▪ 0 No: Antifrost functionality is OFF.
▪ 1 Yes: Antifrost functionality is on.
Room setpoint:
▪ 4°C~16°C
11 Configuration
|
Then...
Then...
Installer reference guide
131