Setting The Minimum Temperature; Setting Fan Mode; Setting The Maximum Heating Time; Reading The Meter Status - Vaillant aroSTOR VWL B 200/5 UK Installation And Maintenance Instructions Manual

Note
When using a low-tariff connection, you should
not set any additional time-programming.
▶
Press the menu button to return to the original display.
▶
If you are using a high-tariff connection, inform the end
user of the optimal energy use.
8.6

Setting the minimum temperature

You can use the minimum temperature function to prevent
the domestic hot water temperature falling below 38 °C. In
doing so, the back-up heater (immersion heater) supports
the heat pump until a domestic hot water temperature of
43 °C has been reached.
Depending on the parameter selection when setting the load
relief stage, the minimum temperature function may not be
available in high-tariff periods under certain circumstances.
INST.MENU → SET TINGS → T°C MINI
▶
Press the rotary knob.
▶
Turn the rotary knob and select a hot water temperature
of 43 °C.
▶
Press the rotary knob to confirm the selection.
▶
Press the menu button to return to the original display.
8.7

Setting fan mode

▶
Turn the rotary knob to set the mode INST.MENU SET
TINGS FAN MODE.
◁
1 = Fan operates only when the heat pump is run-
ning. The fan speed automatically adjusts to the heat
pump's requirements.
◁
2 = Fan operates only when the heat pump is run-
ning. The fan runs at maximum speed.
◁
3 = Fan operates only if the heat pump is running or if
the external control system permits this (humidistat)
8.8

Setting the maximum heating time

1. If you switch off this function, the domestic hot water
cylinder charging time is shortened. INST.MENU →
SET TINGS → MAX. TIME.
2. Press the rotary knob.
3. Turn the rotary knob to set the maximum heating time
via the heat pump (Auto /number of hours).
◁
In Auto mode, the product optimises its use of
energy sources (heat pump and back-up heater)
in order to prevent the heating from starting less
than five hours after a low-tariff period has begun.
–
When in the Auto setting, the product only uses
the back-up heater during low-tariff periods and
programmed time periods. The heat pump is
used first. The back-up heater is switched on as
late as possible.
–
If the unit is not connected to the energy supply
company's high-/low-tariff contact, it may not
recognise that the five-hour time period has
started and consequently the Auto function may
not work.
◁
In "Number of hours" mode, the product optimises
its use of energy sources (heat pump and back-up
heater) in order to reach the set temperature within
n hours of the heating starting.
–
The shorter the maximum heating time is set to,
the more often the back-up heater is switched
20
on and the higher the energy consumption and
consequently the energy costs as a result.
Note
The amount of power available depends
on the load relief level and the time period
(Comfort, Eco, Frost protection, High/Low
tariff) that have been programmed.
4. Press the rotary knob to confirm the selection.
5. Press the menu button to return to the original display.
8.9

Reading the meter status

1. If you want to read the product's counter statuses, se-
lect this menu INST.MENU COUN TERS.
2. Press the rotary knob in the COUN TERS menu.
◁
No. 1 = Number of heat pump switching operations
◁
No. 2 = Number of immersion heater switching op-
erations
◁
No. 3 = Function deactivated
◁
No. 4 = Number of compressor operating hours
3. Press the menu button to return to the original display.
8.10

Locking the control elements

1. Turn the rotary knob until the LOCK ING menu is dis-
played.
–
If the control elements are blocked, you can only
reset the fault codes or unblock the control ele-
ments INST.MENU LOCK ING.
2. Press the rotary knob to confirm.
3. Turn the rotary knob to set the automatic level of lock-
ing.
◁
no = Automatic blocking is not active.
◁
Auto = The control elements are blocked 60
seconds after the last entry. This is how you
unblock the control elements (→ Page 20).
◁
Pro = The control elements are blocked 300
seconds after the last entry. This is how you
unblock the control elements (→ Page 20).
4. Press the rotary knob to confirm the selection.
5. Press the menu button to return to the original display.
8.10.1 Unblocking control elements in the Auto
mode
1. Press and hold the menu button for three seconds.
2. Select the rotary knob YES.
3. Press the rotary knob to confirm the selection.
4. Press the menu button to return to the original display.
8.10.2 Unblocking control elements in the Pro
mode
1. Press and hold the menu button for three seconds.
2. Press and hold the rotary knob and the clock button for
three seconds.
3. Select the rotary knob YES.
4. Press the rotary knob to confirm the selection.
5. Press the menu button to return to the original display.
Installation and maintenance instructions 0020285063_05