Daikin ALTHERMA HT EKBUHAA6 V3, Service Manual

Page: 119 / 302

ESIE09-08A Field Setting
Test Operation 107
[A] Option setup

[A-01] Current limitation
The indoor unit current is limited, the outdoor unit is slave and will also reduce its power
consumption consequentially. However transient conditions with higher power consumption are
possible.

[A-02] Temperature difference for leaving and returning water
The unit is designed to support radiator operation. The advised leaving water temperature (set by the
remote controller) for radiators is 65°C. In such a case the unit will be controlled to realize a
temperature difference (
Δ
T) of 10°C, which means that the returning water to the unit is around 55°C.
Depending on the installed application (radiators, fan coil units, ...) or situation, it can be required to
change the
Δ
T. This can be done by changing field setting [A-02].

[A-03] Multi set point 1 temperature.

[A-04] Multi set point 2 temperature.
Notes : 1. When temperature reducing devices are installed, the system can be configured to use multi set points,
also the demand PCB (option) is needed.
2. The selected values for multiple set point should be lower than the value from remote controller
(reference temperature) or domestic hot water temperature (pattern A).
3. Daikin does not offer any temperature reducing device (TRD). This system (multi set point control)
only provides the possibility to use multi set point. It’s than also the installers responsibility to make
sure that the whole system is operating well.
First
code
Second
code Setting name
Default
value Range Step Unit
A Option setup
00 Current limitation 0 0~2 1 —
02 Set point: required temperature difference for
leaving and returning water 10 5~15 1 °C
03 Set point: multiple set point 1 required
temperature value 35 25~80 1 °C
04 Set point: multiple set point 2 required
temperature value 65 25~80 1 °C
Settting V1 Y1
[A-01]=0 (default) 23 A
13 A
[A-01]=1 18.4 A 10.4 A
[A-02]=2 15 A 8.5 A