Manual Worcester-Bosch Greenstar Sense ll (page 25 of 48) (English)

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Working with the main menu

Sense ll – 6 720 812 775 (2014/10)

5.3.3 Automatic adaptation of the time program

Menu: Start opt. time prog.

5.3.4 Setting summer/winter switchover threshold

This menu item is only available with weather-compensated

control. In order to be able to use weather-compensated

control, an outside temperature sensor must be installed.

The heating system is switched off in summer mode, the

heating system in switched on in winter mode. DHW heating is

independent of the switching between summer and winter

modes.

Menu: Sum./wint. changeover

5.4 Changing the settings for DHW heating

Menu: DHW

These settings are only available if at least one DHW system is

installed in the system. The water can be heated via a cylinder

or according to the instantaneous water heating principle.

Menu item description

Start opt.

time prog.1)

1) Depending on the installed system, it may be necessary to

select a heating circuit (heating circuit 1-4).

• If the cut-in optimisation is switched on,

the heating periods in the time program

are brought forward so that the set room

temperature is reached at the beginning

of the heating period.

• If the cut-in optimisation is switched off,

the heating system is switched on at the

required times. The set room

temperature is reached slightly later.

Table 19 Settings for the cut-in optimisation of the time

programs

NOTICE: System damage

▶ Do not switch over to summer mode if

there is a risk of frost.

Switching between summer and winter modes

is only active in automatic mode (by taking

account of the time program). For constant

heating circuits (e.g. for a swimming pool or a

ventilation unit) the the switching between

summer and winter modes is not available.

Menu item description

Sum./wint.

changeover

• In summer, heating mode can be switched

off (Permanently summer).

• The heating mode can be shut down based

on the outside temperature (Summer

mode from); this is only available if the

automatic mode is active in the heating

circuit.

• The heating mode can be active constantly

(Permanently winter). However, the heat

source only goes into operation if it is too

cold inside.

If more than one heating circuit is installed, in-

stead of the above refer to the individual

heating circuit menu.

Summer

operation

from1)

1) This menu item is only displayed if the outdoor-

temperature-dependent switching between summer and

winter modes is active for the heating circuit concerned.

If the adjusted outside temperature2) exceeds

the temperature threshold set here, the

heating system is switched off.

If the adjusted outside temperature falls below

the temperature threshold set here by 1 °C,

the heating system is switched on. In systems

with more than one heating circuit, this setting

always relates to the corresponding heating

circuit in each case.

2) When the outside temperature is adjusted, changes to the

measured outside temperature are delayed and

fluctuations reduced.

Table 20 Settings for switching between summer and winter

modes

WARNING: Risk of scalding!

If thermal disinfection has been activated to

avoid legionella, the hot water is heated once

to in excess of 65 °C. The factory setting for

the hot water temperature is 60 °C. There is a

risk of scalding at the draw-off points if the

temperature is set higher than this.

▶ Make sure that a mixer is installed. If in

doubt, ask your Installer.

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Worcester-Bosch Greenstar Sense ll Manual

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