3
2
Timer function Up to 3 switch-on/switch-off times can be programmed with the
Temperature control system The temperature control system keeps the water in the return
Thermal disinfection The boiler heats up periodically to approximately 70 °C for ther-
Installation and operating instructions Wilo-Star-Z 15 TT
3.4 Scope of supply
1 Pump, ready for connection, with 1.8 m cable and shock-proof
1
power plug
2 Thermal insulation shell
3 2 flat gaskets
4 Installation and operating instructions (not illustrated)
4 How it works
4.1 Application
This circulator is suitable for drinking water only.
4.2 Functions
timer function.
Works setting: 24 hours continuous operation
circuit at the set temperature. To achieve this, the pump is
switched on and off automatically.
This function ensures that
• from a set temperature of more than 55 °C, the danger of
germs forming in the circulation system is reduced
(DVGW requirement),
• lime deposits are reduced,
• the power consumption is reduced.
Works setting: temperature control system switched off.
Note: The timer function and temperature control system
can be operated together. The timer takes priority. If both func-
tions are activated, there is no temperature control during the
switch-off period.
mal disinfection purposes. If the thermal disinfection function is
activated, the pump recognises this from an increase in temper-
ature to more than 68 °C. Irrespective of the timer function, it
then runs continuously for approximately 2 hours and then
switches off again.
How it works
19