Daikin ALTHERMA HT Service Manual page 112

Field Setting
[A] Option setup
First
code
A
 [A-01] Current limitation
[A-01]=0 (default)
[A-01]=1
[A-02]=2
 [A-02] Temperature difference for leaving and returning water
 [A-03] Multi set point 1 temperature.
 [A-04] Multi set point 2 temperature.
1. When temperature reducing devices are installed, the system can be configured to use multi
Notes :
2. The selected values for multiple set point should be lower than the value from remote
3. Daikin does not offer any temperature reducing device (TRD). This system (multi set point
100
Second
code Setting name
Option setup
00 Current limitation
02 Set point: required temperature difference for
leaving and returning water
03 Set point: multiple set point 1 required
temperature value
04 Set point: multiple set point 2 required
temperature value
Settting
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.
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 (∆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 ∆T. This can be done by changing field setting [A-02].
set points, also the demand PCB (option) is needed.
controller (reference temperature) or domestic hot water temperature (pattern A).
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.
V1
23 A
18.4 A
15 A
Default
value Range Step
0 0~2 1
10 5~15 1
35 25~80 1
65 25~80 1
Y1
13 A
10.4 A
8.5 A
Test Operation
ESIE09-08B
Unit
—
°C
°C
°C