EQJW145:
Heating controller
Commissioning
26 7010015003 A
© Fr. Sauter AG
Effect of binary / pulse input (terminals 21, 22)
If the external switching contact is closed, this SERVice parameter can be set
appropriately (SP07 = 0, 1 or 2) to influence the heating programme, as long
as the controller is in automatic mode. If the contact is opened again, the
controller will operate according to the weekly / calendar switching
programme again and the following apply:
0 = HK in back-up mode if contact is closed
1 = HK in reduced mode if contact is closed
2 = HK in nominal mode if contact is closed
Alternatively, the input can be used for quantity metering (and therefore for
quantity limitation as well), to limit see page or to forward a fault signal (using
a modem via SMS or via the configurable relay output to another device). For
SP07, the values mean:
3 = input used as pulse input for quantity metering
4 = input used to limit seepage
The minimum flow can be limited. A signal from the auxiliary contacts of a
control unit can be used to do this. If the contact input is closed, the valve
on the primary side closes and is not opened again until the setpoint for
the flow temperature is 5K higher than the actual value.
5 = input is a fault signal input, used to forward fault signals from other
devices
Room temperature recording
Various types of room temperature sensor can be connected:
0 = no room temperature recording
1 = connect room sensor
2 = connect EGS52/15 or EGT333 with room sensor
3 = connect EGS52/15 or EGT333 without room sensor
4 = only for MOD1,2 with second tank charge pump (SP49 = 2): the
analogue input (terminal 28) is not used as a room sensor but as a second
flow sensor for DHW preparation (also see the section on 'Application
examples').
Room operating unit EGS52/15 allows you to switch over the controller's
mode remotely. Room operating unit EDB100 can also be connected via the
device bus and used to switch the mode over. The mode on the EQJW145
can also be changed using a control station via Modbus. In case of
contradictory commands, the following priority applies: direct settings on
EQJW145 have priority 1. A setting using room operating unit EDB100 via
device bus or a preset via Modbus have priority 2. The setting via the binary
input has priority 3. Settings on room operating unit EGS52/15 have the
lowest priority. If the setpoint for the room temperature is changed via the
setpoint transmitter of the EGS 52/15 or EGT 333 room operating units, it
also changes the actual value for the room temperature at the sensor input of
SP07
SP08
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