Worcester 11 KW, User Manual

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SETTINGS
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the set point value. (Or because Maximum operating time for heating
at hot water demand has passed.)
Heating demand is not active during summer operation.
> General
>> Summer/winter operation
>>> Winter operation
If On is selected, the heat pump is constantly in winter operation and
heat and hot water are always produced. Off signifies constant summer
operation; only hot water is produced. Automatic signifies change-over
at the set outdoor temperature.
>>> Outdoor temperature limit for change over
The menu is displayed only if Automatic has been selected in Winter
operation .
13.3 HOT WATER
Under Hot water , there are functions to:
• Request Extra hot water
• Specify when Hot water peak should be performed to eliminate
bacteria
• Set any Hot water program
• Select operating mode
> Extra hot water
Additional amount of hot water is produced by temporarily increasing
the temperature of the hot water during the set number of hours to the
indicated stop temperature.
>> Extra hot water duration
▶ Set the duration of extra hot water production.
>> Extra hot water stop temperature
▶ Set the stop temperature for extra hot water.
The heat pump starts the function directly and uses the compressor first
and then the additional heat source to increase the temperature. When
the desired number of hours have passed, the heat pump returns to
normal hot water mode.
> Hot water peak
Hot water peak means a temporary increase in the hot water
temperature to approx. 65 °C for thermal elimination of bacteria
(pasteurisation).
For the hot water temperature increase, the compressor is used first;
the additional heat source then continues alone.
>> Day of the week
▶ Set the day on which the hot water peak should take place. None
means that the function is disabled. All means that a hot water peak
takes place every day.
If hot water peak is deactivated comfort mode must be selected in the
menu
Hot water mode .
>> Interval in weeks
▶ Set how often a hot water peak should take place.
– 1 means a hot water peak every week.
– 2 means that a hot water peak takes place in all even weeks of the
year, i.e. in week 2, 4, 6, etc.
– 3 means week 3, 6, 9, etc.
– 4 means week 4, 8, 12, etc.
>> Start time
▶ Set the time of the hot water peak.
> Hot water program
Program 1 and Program 2 enables you to block hot water production
during the set time.
>> Active program
Factory setting Automatic
Alternative On/Automatic/Off
Table 19 Summer/winter operation
Factory setting 18 °C
Lowest value 5 °C
Highest value 35 °C
Table 20 Change over temperature
In the event of alternation between winter and summer
operation and vice versa, there is a certain delay aimed
at preventing constant starting and stopping of the
compressor when the outdoor temperature oscillates
around the temperature limit.
Factory setting 0h
Lowest value 0h
Highest value 48h
Table 21 Extra hot water duration
Factory setting 65 °C
Lowest value 50 °C
Highest value 65 °C
Table 22 Extra hot water stop temperature
DANGER: Risk of burn injuries.
▶ Use a mixing valve when the hot water temperature
exceeds 60 °C.
Factory setting Wednesday
Area None, Day, All
Table 23 Weekday
Factory setting 1
Lowest value 1
Highest value 4
Table 24 Week interval
Factory setting 3:00
Lowest value 0:00
Highest value 23:00
Table 25 Start time
WARNING: Risk of scalding.
At hot water temperatures greater than 60 °C, there is a
risk of scalding.
▶ Exercise caution when using hot water immediately
after a hot water peak.
Factory setting Always hot water
Alternative • Always hot water
• Program 1
• Program 2
Table 26 Hot water program