Rotex RHBH04CB3V Installer's Reference Manual page 54

8 Configuration
# Code
[7.7.2.1] [0-00] Set weather-dependent heating:
T t
[0-01]
[0-02]
[0-01]
[0-03]
[0-00]
▪ T
(additional)
▪ T
# Code
[7.7.2.1] [0-00] << continuation
[0-01] ▪ [0-03]:
temperature. −40°C~+5°C (default:
[0-02]
−10°C)
[0-03]
▪ [0-02]:
temperature.
15°C)
▪ [0-01]:
temperature
temperature equals or drops below
the
[9‑05]°C~[9‑06]°C (default: 45°C).
Note: This value should be higher
than [0-00] as for low outdoor
temperatures
required.
▪ [0-00]:
temperature
temperature equals or rises above
the
[9‑05]°C~min(45, [9‑06])°C (default:
35°C).
Note: This value should be lower
than [0-01] as for high outdoor
temperatures less warm water is
required.
# Code
[7.7.2.2] [0-04] Set weather-dependent cooling:
T t
[0-05]
[0-06]
[0-05]
[0-07]
[0-04]
▪ T
(additional)
▪ T
Installer reference guide
54
Description
[0-03] [0-02]
: Target leaving water temperature
t
: Outdoor temperature
a
continued >>
Description
Low outdoor ambient
High outdoor ambient
10°C~25°C (default:
Desired leaving water
when the outdoor
low ambient temperature.
warmer water
Desired leaving water
when the outdoor
high ambient temperature.
Description
[0-07] [0-06]
: Target leaving water temperature
t
: Outdoor temperature
a
continued >>
# Code
[7.7.2.2] [0-04]
[0-05]
[0-06]
[0-07]
T a
Leaving water temperature: Delta T source
Temperature difference for entering and leaving water. The unit is
designed to support under floor loops operation. The recommended
leaving water temperature (set by the user interface) for under floor
loops is 35°C. In such case, the unit will be controlled to realize a
temperature difference of 5°C which means that the entering water
is
to the unit is around 30°C. Depending on the installed application
(radiators, heat pump convector, under floor loops) or situation, it
can be possible to change the difference between entering and
leaving water temperature. Note that the pump will regulate its flow
to keep the Δt.
# Code
[A.3.1.3.1] [9-09]
[A.3.1.3.2] [9-0A]
Leaving water temperature: Modulation
Only applicable in case of room thermostat control. When using the
room thermostat functionality, the customer needs to set the desired
room temperature. The unit will supply hot water to the heat emitters
and the room will be heated. Additionally, also the desired leaving
water temperature must be configured: when turning on the
modulation, the desired leaving water temperature will be calculated
T a
automatically by the unit (based on the preset temperatures, if
weather-dependent is selected, modulation will be done based on
the desired weather-dependent temperatures); when turning off the
modulation, you can set the desired leaving water temperature on
the user interface. Moreover, with the modulation turned on, the
desired leaving water temperature is lowered or raised in function of
the desired room temperature and the difference between the actual
and the desired room temperature. This results in:
▪ stable room temperatures
temperature (higher comfort level)
▪ less On/OFF cycles (lower noise level, higher comfort and higher
efficiency)
Description
<< continuation
▪ [0-07]: Low outdoor
temperature. 10°C~25°C
20°C)
▪ [0-06]: High outdoor
temperature. 25°C~43°C
35°C)
▪ [0-05]: Desired leaving
temperature when the
temperature equals or drops below
the low ambient temperature.
[9‑07]°C~[9‑08]°C (default: 12°C).
Note: This value should be higher
than [0‑04] as for low outdoor
temperatures less cold
suffices.
▪ [0-04]: Desired leaving
temperature when the
temperature equals or rises above
the high ambient temperature.
[9‑07]°C~[9‑08]°C (default: 8°C).
Note: This value should be lower
than [0‑05] as for high outdoor
temperatures colder water
required.
Description
Heating: required temperature
difference between entering and
leaving water. Range: 3°C~10°C (in
steps of 1°C; default value: 5°C).
Cooling: required temperature
difference between entering and
leaving water. Range: 3°C~10°C (in
steps of 1°C; default value: 5°C).
exactly matching the
RRLQ004~008CA + RHBH/X04+08CB
ROTEX HPSU low temperature Bi‑bloc
4P384979-1C – 2017.04
ambient
(default:
ambient
(default:
water
outdoor
water
water
outdoor
is
desired