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Vaillant ecoMAX 622-2 E Manual

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4 Operation
Instructions for use ecoMAX10
4.7 Turning the boiler OFF
(ecoMAX 800 series only)
4.7.1 To turn OFF the central heating only (Summer
mode)
Fig. B.12 To turn OFF the central heating only (Summer mode)
• Turn the maximum radiator temperature control knob
used to control the heating supply temperature (1) all
the way to the left.
Note!
You can switch off the heating operation in sum-
mer, for example, but the boiler will continue to
provide domestic hot water whenever a hot
water tap is opened.
4.7.2 To turn OFF central heating and hot water for
short periods of time
Fig. B.13 Complete shutdown
• Turn the main ON/OFF control (2) to the “0” position.
If you want to turn the ecoMAX boiler OFF for a longer
period of time (e.g. holidays), and there is no danger of
frost, then you should also turn off the gas supply, the
cold water service valve (see page 9) and the electrical
supply. Please note the frost protection hints detailed in
these instructions.
4.8 Turning the boiler OFF (ecoMAX 600 series only)
4.8.1 To turn OFF the central heating
• Turn the maximum radiator temperature control knob
used to control the heating supply temperature (1) all
the way to the left.
Note!
Do not turn the EcoMAX 600 boiler OFF if a hot
water cylinder is also incorporated in the system
unless there is no demand for domestic hot
water.
4.8.2 To turn boiler OFF for short periods of time
• Turn the main ON/OFF control (2) to the “0” position.
Note!
Do not turn the EcoMAX 600 boiler OFF if a hot
water cylinder is also incorporated in the system
unless there is no demand for domestic hot
water.
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