sauter EQJW145, Руководство по эксплуатации

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EQJW145: Heating controller
Commissioning
7010015003 A
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© Fr. Sauter AG
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 of
heating characteristic
Outdoor temperature
Fig. 5: 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
Setpoint boost for a demand requirement via the device bus
When heat from another device is requested via the device bus, SP42 can be
used to make the EQJW145 control to a setpoint that is higher by the amount
entered for SP42 (0K to 30K) than the amount actually requested by the
other device. This can improve control behaviour for cascaded controllers.
Extraneous heat portion
Continual incidence of extraneous heat (e.g. due to the presence of people,
loss of heat from machines) can be taken into account by the EQJW 145 and
compensated by a horizontal shift of the heating characteristic towards a
lower outdoor temperature.
Heating limit
If the outdoor temperature is higher than the heating limit, heating operation
is stopped, i.e. the EQJW 145 goes into summer mode. As soon as the value
falls back below the heating limit, heating operation is resumed and summer
mode is ended again. To avoid frequent status changes, a hysteresis of 1K is
taken into account in both cases.
The outdoor temperature required for this function can either be measured
with an outdoor temperature sensor or can be received via a connected
device bus. For this function, there is a choice between the current measured
outdoor temperature or the averaged outdoor temperature over the last 21
hours (see SP45 on this point).
SP41
SP42
SP43
SP44