Filter
Top Products
Hydraulic Components SDC / DHC
190 EN2H-0221GE51 R0808
In this control mode, the loading temperature offset for the tank is
to be selected so that the heat generator does not switch off
before the heating circuits are enabled. A parallel shift of at least
10 K should be set so that this function can operate correctly.
Parallel operation based on weather conditions
Above the set outside frost protection limit, hot water provision is
carried out in priority mode; in case of active frost protection there
is a switch-over to parallel mode.
Priority mode with intermediate heating
With this setting hot-water circuit loading is limited to a maximum
of 20 minutes in order to provide for a 10-minute long
intermediate heating. The loading procedure is continued at the
end of the intermediate heating. Hot-water loading and
intermediate heating are carried out in an alternating order until
hot-water tank loading is finished.
Priority isolating circuit
Hot-water loading is carried by means of a three-way switch-over
valve; the heating circuit pump is also the hot-water circuit loading
pump. At the end of the hot-water loading and at the expiration of
the extended time the three-way switch-over valve is changed
back to heating mode.
The heating circuit pump is connected at output direct heating
circuit pump and the three-way valve to output tank loading pump
in this case.
If there is no hot-water demand (standby), the valve is switched to
the hot-water tank (relay output closed).
External mode (request does not act on heating generator
and heating circuit)
In external mode, hot-water loading is switched only according to
the set switching differentials. There is no heat demand for the
heat generator. There is no tank priority mode for the heating
circuits. The parameters boiler parallel shift, tank discharge
protection, pump extended running time and boiler start-up
protection no longer act on the hot-water loading pump.
Tank discharge protection
NOTE
NOTE