Daikin ALTHERMA, Installer'S Reference Manual

Page: 170 / 280

11 | Configuration
Installer reference guide
170
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
4P620241-1 – 2020.06
Example: Changeover restrictions
When Restriction
During cold season.
Example: October, November, December, January,
February and March.
Heating only
During warm season.
Example: June, July and August.
Cooling only
In-between.
Example: April, May and September.
Reversible
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 Description
[4.3.1] [4-02] Space heating off temperature : When
the averaged outdoor temperature rises above
this value, space heating is turned off.
(a)
▪ 14°C~35°C
[4.3.2] [F-01] Space cooling off temperature : When
the averaged outdoor temperature drops below
this value, space cooling is turned off.
(a)
▪ 10°C~35°C
(a)
This setting is also used in automatic heating/cooling changeover.
NOTICE
Maximum value [4-02] . For models without integrated backup heater:
▪
Default value [4‑02]=25°C. You can change this value, but do NOT exceed the
maximum value.
▪
If the external backup heater kit is installed: Maximum value [4‑02]=35°C
▪
If the external backup heater kit is NOT installed: Maximum value [4‑02]=25°C
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