Daikin EPRA16DAW1 Installer's Reference Manual page 160

9 | Configuration
Installer reference guide
160
During warm season.
Example: June, July and August.
In-between.
Example: April, May and September.
The unit determines its operation mode by the outdoor temperature if:
▪ Operation mode=Automatic, and
▪
Operation mode schedule=Reversible.
The unit determines its operation mode in such a way that it will always stay within
the following operation ranges:
▪ Space heating off temperature
▪ Space cooling off temperature
The outdoor temperature is time-averaged. If the outdoor temperature drops, the
operation mode will switch to heating and vice versa.
If the outdoor temperature is between the Space heating off temperature
and the Space cooling off temperature, the operation mode remains
unchanged.
Operation range
Depending on the average outdoor temperature, the operation of the unit in space
heating or space cooling is prohibited.
# Code
[4.3.1] [4-02]
[4.3.2] [F-01]
(a)
This setting is also used in automatic heating/cooling changeover.
Exception: If the system is configured in room thermostat control with one leaving
water temperature zone and quick heat emitters, the operation mode will change
based on the measured indoor temperature. Besides the desired heating/cooling
room temperature, the installer sets a hysteresis value (e.g. when in heating, this
value is related to the desired cooling temperature) and an offset value (e.g. when
in heating, this value is related to the desired heating temperature).
Example: A unit is configured as following:
▪ Desired room temperature in heating mode: 22°C
▪ Desired room temperature in cooling mode: 24°C
▪ Hysteresis value: 1°C
▪ Offset: 4°C
Changeover from heating to cooling will occur when the room temperature rises
above the maximum of the desired cooling temperature added by the hysteresis
value (thus 24+1=25°C) and the desired heating temperature added by the offset
value (thus 22+4=26°C).
When
Space heating off temperature: When
the averaged outdoor temperature rises above
this value, space heating is turned off.
▪ 14°C~35°C
Space cooling off temperature: When
the averaged outdoor temperature drops below
this value, space cooling is turned off.
▪ 10°C~35°C
Restriction
Cooling only
Reversible
Description
(a)
(a)
EPRA14~18DAV3+W1 + ETBH/X16DA6V+9W
Daikin Altherma 3 H HT W
4P587501-1A – 2020.01