sauter EQJW145, Руководство по эксплуатации

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EQJW145: Heating controller
Technical data
98
7010015003 A
© Fr. Sauter AG
The maximum flow or the maximum power can be limited. Limit values can
be specified for the heating, DHW preparation and the combination of heating
and DHW preparation. If the limit value is exceeded the flow temperature is
reduced. The limit values and intervention intensity when the limit is
exceeded are parameterised in the SERVice level.
The minimum flow can be limited. To do so, you can use a pulse signal from
a flow measuring device or the signal from the auxiliary contacts of a control
unit. When the function is activated, the valve on the primary side closes and
does not open again until the setpoint for TF is 5K higher than the actual
value.
In manual mode, the relays for the various outputs can be activated
separately. The setting for this is menu-led if manual mode has been
enabled, which is done in the SERVice level. The factory setting for manual
mode is ‘not enabled’.
With the automatic cut-off facility, the heating controller saves energy without
any loss of comfort levels, wherever possible. There are several ways of
having a heating circuit switched off by the heating controller:
a) The current mode for the heating circuit is OFF
b) Summer/winter heating limit is OFF
c) TA TRs (when TA TRs – 1K, controller switches back on).
The optimisation function causes the heating to be switched on/off at the
optimum time in automatic mode when changing from reduced or back-up
mode into normal mode. The switching times are chosen so that the room
temperature's setpoint is reached at the time that is set in the switching
programme. At the same time, energy is saved by switching on as late as
possible and off as early as possible.
EN 1264 Part 4 describes how cement floors must be treated before floor
coverings are laid with functional heating. Firstly, a flow temperature of 25°C
must be maintained over 3 days for this purpose. After this, the maximum
flow temperature should be maintained for 4 more days. This function has
been implemented in the EQJW 145. In addition, there is now a ready-for-
laying heating function. This involves raising the flow temperature gradually
by 5K per day, starting from 25°C, until the maximum flow temperature is
reached. Thereafter, the flow temperature is reduced again gradually by 5K
per day until 25°C is reached. You can call the functions up via the SERVice
level.
Flow and power
limitation
Minimum flow
limitation
Manual mode
Automatic cut-off
Optimisation of
switching times
Floor drying