sauter Equitherm EQJW 125, Руководство пользователя

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EQJW 125: Heating controller
Commissioning
22
7001029003 A
© Fr. Sauter AG
Valve run-time
Valves with a motorised actuator need a certain time (known as the valve
run-time) to open or close completely. This SERVice parameter is used to set
the equitherm EQJW 125 to the run-time for the valve drive that is being
used. Optimal control quality and various protective functions are only
ensured if the valve run-time is set correctly.
Minimum and maximum limits for flow temperature
The setpoint flow temperature can be limited. The value of SERVice
parameter SP15 sets the lower limit in this case, and the value of SERVice
parameter SP16 sets the upper limit. Parameters SP15 and SP16 specify a
maximum and minimum flow temperature.
Slope of heating characteristic
The flow temperature is controlled according to the outdoor temperature. The
heating characteristic in the controller determines the setpoint for the flow
temperature in relation to a given outdoor temperature.
2,0
1,8
1,6
1,4
1,2
1,0
0,8
0,6
0,4
2,5
3,0 3,5 4,0
-20 -15 -10 -5 0 5 10 15
[°C]
100
90
80
70
60
50
40
30
-10
-5
5
[°C
]
T I
[°C]
SP17: Slope
Outdoor temperature
F
lo
w
t
e
m
p
e
ra
tu
re
Fig. 3: Guideline for the slope of the heating characteristic:
1,4 for hot water radiator heaters ( )
1,0 for low temperature heaters
0,6 for floor heaters
Heating limit
If the averaged outdoor temperature is higher than the heating limit, heating
operation is stopped. As soon as the value falls back below the heating limit,
heating operation is resumed. To avoid frequent status changes, a hysteresis
of 1K is taken into account in both cases.
The outdoor temperature required for control purposes can either be
measured with an outdoor temperature sensor or can be received via a
connected device bus. The measured outdoor temperature is averaged over
21 hours for the heating limit function in order to reduce the influence of brief
fluctuations.
SP14
SP15, SP16
SP17
SP18