Fujitsu UTW-SCBYA Installation And Operating Manual page 18

Control Box
Line Function
Holidays, heating circuit 1
641 U Preselection
642 U Start (Day / Month)
643 U End (Day / Month)
648 U Operating level (during the holidays)
Heating, circuit 1
U
710 Comfort heating setpoint
712 U Reduced setpoint
714 U Frost protection setpoint
716 S Comfort setpoint max
720 I Heating curve slope (See
721 I Heating curve displacement
726 I Heating curve adaption
730 I Summer / Winter heating limits
When the average of the outdoor temperatures over the past 24 hours reaches 18°C, the regulator switches off the
heating (as an economy measure).
During summer mode, the display shows "Eco". This function is only active in automatic mode.
732 S 24-hour heating limit
This function enables you partially to offset the automatic summer / winter switchover during the intermediate seasons.
Increasing the value delays the switchover to summer regime.
Decreasing the value advances the switchover to summer regime.
This function is only active in automatic mode.
740 S Flow temp setpoint min (for fan convectors)
741 S Flow temp setpoint max
Floor heating system = 50 °C / Higher temperature radiator = 65 °C
750 S Room influence
If the installation is fitted with a room thermostat :
This function enables you to choose the ambient temperature's influence on the setting.
If no value is entered, the setting is made based on the temperature control.
If the parameter is set at 100%, the setting is only based on the ambient temperature.
790 S Optimum start control max
(Early start to switch to the comfort setting.).
791 S Optimum stop control max
(Early stop to switch from the comfort setting to the
reduced setting.).
800 S Reduced setp increase start
801 S Reduced setp increase end
830 S Mixer valve boost
834 S Actuator running time
- 18 -
figure 12).
(see § 3.2.3)
Setting range or display
Period 1 to 8
01.01... 31.12
01.01... 31.12
Frost protection, Reduced
from reduced setpoint to 35°C
from frost protection setpoint...
to comfort setpoint
from 4°C...
to reduced setpoint
20 °C... 35 °C
0,1... 4
-4,5 °C... 4,5 °C
Off, On
8 °C... 30 °C
-10 °C... 10 °C
8... 95 °C
8... 95 °C
1%... 100%
0... 360 min
0... 360 min
-30... 10 °C
-30... 10 °C
0... 50 °C
30... 873 s
Installation and operating manual "1395 - EN"
Setting Basic setting
increment
Period 1
1
1
Frost
protection
20 °C
0,5 °C
0,5 °C 18 °C
0,5 °C 8 °C
1 °C 28 °C
0,02 0,5
0,5 °C 0
Off
0,5 °C 18 °C
1 °C -3 °C
1 °C 8 °C
1 °C 55 °C
1% 20%
10 min 120 min
10 min 120 min
1 °C --
1 °C -5 °C
1 °C 0
1 s 240 s