The functions4
18 Operating instructions RC20 room controller • Issue 08/2006
We reserve the right to make any changes due to technical modifications.
Release the "DHW" key. The new DHW temperature setting is
saved immediately. Then the standard display is shown again.
4.3.2 Single charge – domestic hot water
1)
In day mode, DHW is recharged subject to demand if the DHW
temperature falls 5 °C below the set value.
In night mode, any hot water can still be drawn from the DHW
cylinder. The DHW temperature will have fallen below the set value
if the green LED on the "DHW" key is illuminated. Should you
require DHW at the selected DHW temperature once, proceed as
follows:
Press "DHW".
The LED of the "DHW" key illuminates, and the "Single DHW
charging" commences (up to the selected temperature).
Depending on the size of the DHW cylinder and the boiler rating,
the DHW will be available after approx. 10 to 30 minutes. With
instantaneous water heaters or combination boilers, DHW is
available almost immediately.
USER NOTE
If you have started this function in error, press "DHW" again.
Recharging will then be terminated and the LED stops flashing.
USER NOTE
In a modern Buderus DHW cylinder, the water only cools down at
a rate of around 0.5 °C per hour when not being drawn, i.e.
recharging only occurs after 10 hours. If necessary you can
manually recharge the DHW to 60 °C (see section 4.3.2 "Single
charge – domestic hot water
1)
", page 18).
1)
Not possible for operation using boilers with UBA 1.x.
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