Buderus RC35 User Manual

Principles of operation
Logamatic EMS RC35 programming unit - Subject to technical modifications
18
4
4.8 Setting DHW functions
Risk of scalding from DHW temperatures over 60 °C!
WARNING: Risk of scalding!
The factory setting for the DHW temperature is 60 °C. There is a risk of scalding at the
hot water draw-off points if the temperature is set higher than this and also following
thermal disinfection.
B If the temperature set is higher than 60 °C or following thermal disinfection: never
open any hot water tap without mixing in cold water as well.
What is it for? Operation
Initial situation: the flap is closed.
Changing DHW temperature
With factory settings, hot water is available
during the heating phases (day mode) of
the selected switching program. The water
in the DHW cylinder is heated once in the
morning for 30 minutes before central
heating starts.
If your heating system is equipped with a
remote control unit (e.g. RC2x,
Æ page 27), the DHW temperature for the
entire heating system can also be changed
at the remote control unit.
B To change the DHW temperature: hold down
and turn rotary selector at the same
time.
If a message is issued that this adjustment is not
possible:
At the boiler programming unit, turn rotary
selector to “AUT”
1)
or enable DHW heating.
Heating up DHW once
1)
To save energy, during day mode DHW is
only reheated automatically when its
temperature falls 5 °C below the set DHW
temperature.
If you need large amounts of hot water one
evening or outside the set times for day
mode, you can heat up the DHW.
This function is not available with boilers
with UBA1.x.
If the LED
2)
illuminates, the DHW
temperature has fallen below the set value.
B To heat up the DHW manually: press .
The LED on starts flashing
2)
. Heat-up
starts, and is later terminated automatically.
If no heating is necessary (because the water is
still hot), a message will appear. Only the DHW
circulation pump will start (if fitted) to transport
the hot water more quickly to the draw-off points.
B If you want to stop the heating process:
press again.
Tab. 7 Setting DHW functions

Buderus RC35 Specifications

General

Display	LCD
Temperature Control	Yes
Weather Compensation	Yes
Communication	EMS Bus
Mounting	Wall-mounted
Voltage	24 V
Temperature range	5°C to 30°C
Accuracy	±0.5°C
Protection class	IP20
Weight	0.3 kg
Power consumption	2 W
Switching current	Not applicable
Ambient temperature	0°C to 45°C