Fujitsu Waterstage WOYG140LCTA, Дизайн и техническое руководство

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- (CS01 - 28) -
Control system
- (CS01 - 28) -
C
O
N
T
R
O
L
SY
S
T
E
M
C
O
N
T
R
O
L
SY
S
T
E
M
Quick setback
LINE FUNCTION
760 1060 Room temp limitation
780 1080 Quick setback
Room temp limitaion
The "Room temperature limitation" function enables
the heating circuit pump to be deactivated should
the room temperature exceed the current room
temperature setpoint by more than the adjusted
differential.
The heating circuit pump is activated again as soon
as the room temperature falls to a level below the
current room temperature setpoint.
During the time the "Room temperature limitation"
function is active, no heat request is sent to the
producer.
Quick setback
During quick setback, the heating circuit pump is
deactivated and, in the case of mixing circuits, the
mixing valve is fully closed.
When using a room sensor, the function keeps the
heating off until the room temperature drops to the
level of the "Reduced" or "Frost protection" setpoint.
If the room temperature falls to the reduced or frost
level, the heating circuit pump is activated and the
mixing valve released.
Quick setback switches the heating off for a certain
period of time, depending on the outside
temperature
and the building time constant.
Duration of quick setback when "Comfort" setpoint
minus "Reduced" setpoint = 2 K (e.g. "Comfort"
setpoint = 20 °C and "Reduced" setpoint = 18 °C)
°C
TRx
TRw+SDR
TRw
T
ON
P
OFF
TRx : Actual value of room temperature
TRw : Room temperature setpoint
SDR : Room switching differential
P : Pump
T : Time
Building time constant [h]
Composite
outside
temperature
5
Duration of quick setback [h]
15°C 7.7
10°C 3.3
5°C 2.1
0°C 1.6
-5°C 1.3
-10°C 1.0
-15°C 0.9
-20°C 0.8
Optimisation at switch-on and switch-off
LINE FUNCTION
HC1 HC2
790 1090
Optimum start control max
791 1091
Optimum stop control max
Optimum start control max
The change in temperature levels is optimised in
such a way as to reach the comfort setpoint during
changeover times.
Optimum stop control max
The change in temperature levels is optimised in
such a way as to reach the comfort setpoint -1/4 °C
during changeover times.