Frischwasser-Modul FriWa für die Trinkwasser-Erwärmung nach ...

- pulse-driven (depending on the need / requirements), the short opening of a hot water tap (tap
pulse) starts the circulation pump. The circulation pump will then run for several minutes
(adjustable).
- time-dependant, the operation of the circulation pump can be adjusted within an arbitrary
period of time on a “week clock”. The circulation will start at the beginning of the period of time
chosen. It will stop after the end of the chosen period of time.
- time- / temperature -dependant, the operation of the circulation pump can be adjusted
within an arbitrary period of time on a “week clock. The circulation only starts when the
adjustable min. temperature on the heat exchanger is exceeded within the period of operation
chosen. The circulation stops after the required temperature has been reached i.e. after the end
of the chosen period of time.
While delivered, the circulation (see user’s manual of the controller, menu „OPTIONEN“) is
preset on „NEIN“ (OFF). After the assembly of the circulation, it is obligatory to select one
mode of operation.
A circulation temperature of more than 55°C favorizes the calcination of the heat
exchanger. The water preparation cannot be germfree at circulation temperatures of
under 50°C!
Gravity brakes
The primary circuit (heating circuit) is provided with a
gravity brake inside the thermovalve (7), in order to
securely avoid unwished recirculations (gravity circulation).
For the filling, dearating and purging of the system, the
gravity brake has to be open. This is
done by half-opening the
thermovalve (7) (with a n° 14 flat
wrench). The ball of the ball valve
pushed the gravity brake open.
9
For the operation of the system, all
ball valves and valves need to be
open completely
An inserted lock valve – serving as return flow inhibitor –
is located in the connection of the circulation tubing (T,
9). This way it can be assured that possible short-circuit
flows through the circulation tubing during the hot water
extraction can be avoided.
7
Frage: Entlüftung des Zirkul-stranges = ?????
19/59