Wolf FWS-2-80, Installation Instructions Manual, Page: 40 / 104

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Time-independent DHW
circulation – Pulse
Time-dependent DHW
circulation
Commissioning and operation of the
DHW circulation system
The DHW circulation pump is activated by briefly opening a hot water draw-off point and
is stopped by the integral thermostat when the set DHW circulation return temperature
has been reached. The time switch is not used with this mode (to avoid continuous
operation).
Set function selector switch (C) to "ON".
The DHW circulation pump is started by a separately adjustable time switch. DHW
circulation stops when the preset DHW circulation return temperature is reached. The
pump cycling operation is thermostat-driven.
DHW circulation is disabled outside of the preset periods.
Set function selector switch (C) to .
Setting the DHW circula-
tion shutdown temperature
(see 7)
Set the temperature selector (A) to the required temperature.
DHW circulation is disabled when the shutdown temperature is reached.
The temperature set on the DHW circulation unit (A) must be at least
10 K below the DHW temperature of the freshwater module, to prevent
DHW circulation from operating continuously.
Observe all national codes for drinking water hygiene.
Note Note