8 Configuration
Installer reference guide
61
RRLQ004~008CA + RHBH/X04+08CB
ROTEX HPSU low temperature Bi‑bloc
4P384979-1C – 2017.04
# Code Description
[7.4.3.3] [6-0C] 30°C~min(50, [6‑0E])°C (default: 45°C)
Reheat hysteresis
Only applicable when domestic hot water preparation is scheduled +
reheat.
# Code Description
N/A [6-08] 2°C~20°C (default: 10°C)
Weather dependent
The weather dependent installer settings define the parameters for
the weather dependent operation of the unit. When weather
dependent operation is active the desired tank temperature is
determined automatically depending on the averaged outdoor
temperature: low outdoor temperatures will result in higher desired
tank temperatures as the cold water tap is colder and vice versa. In
case of scheduled or scheduled+reheat domestic hot water
preparation, the storage comfort temperature is weather dependent
(according to the weather dependent curve), the storage economic
and reheat temperature are NOT weather dependent. In case of
reheat only domestic hot water preparation, the desired tank
temperature is weather dependent (according to the weather
dependent curve). During weather dependent operation, the end-
user cannot adjust the desired tank temperature on the user
interface.
# Code Description
[A.4.6] N/A Weather dependent desired tank
temperature is:
▪ Fixed (default): disabled. All desired
tank temperature are NOT weather
dependent.
▪ Weather dep.: enabled. In scheduled
or scheduled+reheat mode, the
storage comfort temperature is
weather dependent. Storage economic
and reheat temperatures are NOT
weather dependent. In reheat mode,
the desired tank temperature is
weather dependent.
Note: When the displayed tank
temperature is weather dependent, it
cannot be adjusted on the user
interface.
# Code Description
[A.4.7] [0-0E]
[0-0D]
[0-0C]
[0-0B]
Weather-dependent curve
T
DHW
T
a
[0-0C]
[0-0B]
[0-0E] [0-0D]
▪ T
DHW
: The desired tank temperature.
▪ T
a
: The (averaged) outdoor ambient
temperature
▪ [0-0E]: low outdoor ambient
temperature: −40°C~5°C (default:
−10°C)
▪ [0-0D]: high outdoor ambient
temperature: 10°C~25°C (default:
15°C)
▪ [0-0C]: desired tank temperature when
the outdoor temperature equals or
drops below the low ambient
temperature: 45°C~[6‑0E]°C (default:
60°C)
▪ [0-0B]: desired tank temperature when
the outdoor temperature equals or
rises above the high ambient
temperature: 35°C~[6‑0E]°C (default:
55°C)
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