User manual

10
Customising Settings for Your Home
4
EN
DHW tank temp.
DHW max.
temp.
DHW max.
temp. drop
Start
DHW max.
operation time
DHW mode
restriction
DHW mode
Time
Stop
Stop
Restart
DHW max.
temp.
DHW max.
temp. drop
DHW tank temp.
Stop
Start
Restart
Time
DHW mode DHW mode
Domestic Hot Water (DHW)/Legionella Prevention
The domestic hot water and legionella prevention menus control the operation of
DHW tank heat ups.
<DHW mode settings>
1. Highlight the hot water icon and press CONFIRM.
2. Use button F1 to switch between Normal and ECO heating modes.
3. To edit the mode, press down the MENU button for 3 secs, then select “hot wa-
ter”.
4. Press F2 key to display the HOTWATER (DHW) SETTING menu.
5. Use F2 and F3 keys to scroll through the menu selecting each component in
turn by pressing CONFIRM. See the table below for description of each setting.
6. Enter the desired number using the function keys and press CONFIRM.
Menu subtitle Function Range Unit Default value
DHW max. temp Desired temperature of stored hot water 40 - 60 °C 50
DHW max. temperature
drop
Difference in temperature between DHW max. temp and the temperature at which DHW mode restarts 5 - 30 °C 10
DHW max. operation time Max time allowed for stored water heating DHW mode 30 - 120 min 60
DHW mode restriction The time period after DHW mode when space heating has priority over DHW mode temporarily pre-
venting further stored water heating
(Only when DHW max. operation time has passed.)
30 - 120 min 30
If you wish to make changes contact installer.
Explanation of DHW operation
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the “DHW max. temperature drop” (set by installer), DHW mode operates and
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the DHW tank.
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the installer or if the ‘DHW max. operation time’ set by the installer is exceeded
DHW mode ceases to operate.
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heating/cooling circuit.
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operate. The duration of this feature is set by the installer and during its opera-
tion, DHW mode can not (normally) be reactivated, allowing time for the system
to deliver primary hot water to the space heating/cooling if required. However,
if at this time there is no current demand for space heating/cooling, the system
will automatically resume DHW mode. This will continue until it receives a de-
mand for space heating.
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and DHW tank heating will continue according to system demand.
<Eco mode>
DHW mode can run in either ‘Normal’ or ‘Eco’ mode. Normal mode will heat the
water in the DHW tank more quickly using the full power of the heat pump. Eco
mode takes a little longer to heat the water in the DHW tank but the energy used
is reduced. This is because heat pump operation is restricted using signals from
the FTC based on measured DHW tank temperature.
Note: The actual energy saved in Eco mode will vary according to outdoor
ambient temperature.
Return to the DHW/legionella prevention menu.
Legionella Prevention Mode settings (LP mode)
1. Use button F3 to choose legionella mode active YES/NO.
2. To edit the legionella function, press down the MENU button for 3 secs and
select “hot water”, then press F4 key.
3. Use F1 and F2 keys to scroll through the menu selecting each subtitle in turn
by pressing CONFIRM. See the table below for description of each setting.
4. Enter the desired number using the function keys and press CONFIRM.
During Legionella Prevention Mode the temperature of the stored water is in-
creased above 60°C to inhibit legionella bacterium growth. It is strongly recom-
mended that this is done at regular intervals. Please check local regulations for
the recommended frequency of heat ups.
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normally.
Menu subtitle Function Range Unit Default value
Hot water temp. Desired temp of stored hot water 60–70 °C 65
Frequency Time between LP mode DHW tank heat ups 1–30 day 15
Start time Time when LP mode will begin 0:00–23:00 - 03:00
Max. operation time Maximum time allowed for LP mode DHW tank heat 1–5 hour 3
Duration of max. temp. The time period after LP mode max. water temp has been reached 1–120 min 30
If you wish to make changes contact installer.