Shutdown; Switching Off/Standby Mode; Setting Frost Protection; Anti-Block Protection - Bosch Gaz 6000 W Installation And Maintenance Instructions Manual

Shutdown

8 Shutdown
8.1

Switching off/standby mode

The device has an anti-seizing function which prevents the heating pump
and the 3-way valve seizing up following long periods of inactivity.
The anti-seizing function remains active during standby mode.
▶ Switch off the device with the K key.
The display shows only the symbols
▶ If the device is taken out of operation for a long period: Bear in mind
frost protection ( chapter 8.2).
8.2

Setting frost protection

NOTICE:
Risk of damage to the system from frost!
The heating system can freeze up after a prolonged period (e.g. during a
power failure, switching off the power supply, faulty fuel supply, boiler
fault etc.).
▶ Ensure that the heating system is in constant use (particularly when
there is a risk of frost).
Frost protection for the heating system:
Frost protection for the heating system is only ensured if the heating
pump is operational and is pumping heating water through the entire
system.
▶ Leave the heating switched on.
▶ Set the maximum flow temperature to at least 40 °C (Section 7.4).
-or- If you want to leave the device switched off:
▶ mix Bosch-approved anti-freeze into the heating water ( Tab.,
page 16) and drain the DHW circuit.
For further information, see the heating controller operating
instructions.
Device frost protection:
The device frost protection function switches the burner and heating
pump on when the temperature in the installation room (at temperature
sensor for heating flow) falls below 5 °C. This prevents the boiler freezing
up.
▶ Activate summer mode ( chapter 7.8) or set the device to standby
mode ( chapter 8).
NOTICE:
Heating system at risk through frost.
In summer/standby mode, only the device is protected against frost.
Frost protection with OpenTherm controllers:
▶ In order to protect the heating system against frost, adjust the
controller to a minimal setback temperature of 10 °C.
The controller must not be switched off or set to stand by.
24
and .
8.3

Anti-block protection

This function prevents the heating pump and the 3-way valve seizing up
following long periods of inactivity.
The anti-seizing function remains active during standby mode.
Every time the pump is switched off, a timer is started that briefly starts
the heating pump after 24 hours.
Gaz 6000 W – 6720866247 (2019/07)