Bedienungsanleitung Viessmann VITOCAL 252-A (Seite 16 von 72) (Englisch)

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Your heat pump is preset at the factory and is therefore

ready for operation:

Room heating/room cooling

■From 06:00 to 22:00, your home will be heated to

20 °C "Room set temperature" (standard room

temperature).

■If a separate buffer cylinder is installed, this buffer

cylinder will be heated.

DHW heating

■DHW is heated to "Set DHW temperature" 50 °C

every day from 05:30 to 22:00.

■Any installed DHW circulation pump is switched off.

■If required, the instantaneous heating water heater

built into the indoor unit can be switched to DHW

heating.

Frost protection

■Frost protection is ensured for your heat pump, DHW

cylinder and any separate buffer cylinder that may be

installed.

Note

At outside temperatures below –20 °C and in the

case of a fault in the heat pump, only the instantane-

ous heating water heater built into the indoor unit is

switched on to provide frost protection for the sys-

tem.

Wintertime/summertime changeover

■This changeover is automatic.

Date and time

■The date and time were set by your contractor.

You can change the settings at any time to suit your

individual requirements.

Power failure

All settings are retained if there is a power failure.

Energy saving tips

Saving energy when using room heating

■Do not overheat your home. Every degree of room

temperature reduction saves up to 6 % on your heat-

ing bills.

Do not set your standard room temperature ("Room

set temperature") to above 20 °C: See page 28.

■Heat your home to the reduced room temperature at

night or during regular absences (not applicable to

underfloor heating). For this, adjust the settings in

the time program for room heating ("Time pro-

gram"): See page 29.

■Adjust the heating curves so that your home is

heated with your individual preferred temperature all

year round: See page 29.

■To switch off functions that are not required (e.g.

room heating in summer), set the operating program

to "Standby mode" for the relevant heating circuits:

See page 28.

■If you are going away, set the "Holiday program":

See page 32.

During the period that you are away, the room tem-

perature will be reduced and DHW heating switched

off.

Saving energy on DHW heating

■At night or during regular absences, heat the DHW to

a lower temperature. To do so, adjust the time pro-

gram for DHW heating: See page 33.

■Switch on DHW circulation only for those times in

which you regularly use hot water. For this, adjust

the time program for the DHW circulation pump: See

page 33.

Utilising excess power (Smart Grid)

Utilise free or cheap excess power from the power

supply utility for your heating system.

To use this function, please contact your heating con-

tractor.

Introductory information

Your system is preset at the factory

6199646

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Viessmann VITOCAL 252-A Seite 16

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