8 Configuration
Installer reference guide
54
RRLQ004~008CA + RHBH/X04+08CB
ROTEX HPSU low temperature Bi‑bloc
4P384979-1C – 2017.04
#
Code
Description
[7.7.2.1]
[0-00]
[0-01]
[0-02]
[0-03]
Set weather-dependent heating:
[0-00]
[0-01]
Ta
Tt
[0-03]
[0-02]
▪ T
t
: Target leaving water temperature
(additional)
▪ T
a
: Outdoor temperature
continued >>
#
Code
Description
[7.7.2.1]
[0-00]
[0-01]
[0-02]
[0-03]
<< continuation
▪ [0-03]:
Low
outdoor
ambient
temperature. −40°C~+5°C (default:
−10°C)
▪ [0-02]:
High
outdoor
ambient
temperature. 10°C~25°C (default:
15°C)
▪ [0-01]:
Desired
leaving
water
temperature
when
the
outdoor
temperature equals or drops below
the
low
ambient
temperature.
[9‑05]°C~[9‑06]°C (default: 45°C).
Note:
This value should be higher
than [0-00] as for low outdoor
temperatures
warmer
water
is
required.
▪ [0-00]:
Desired
leaving
water
temperature
when
the
outdoor
temperature equals or rises above
the
high
ambient
temperature.
[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
Description
[7.7.2.2]
[0-04]
[0-05]
[0-06]
[0-07]
Set weather-dependent cooling:
[0-04]
[0-05]
Ta
Tt
[0-07]
[0-06]
▪ T
t
: Target leaving water temperature
(additional)
▪ T
a
: Outdoor temperature
continued >>
#
Code
Description
[7.7.2.2]
[0-04]
[0-05]
[0-06]
[0-07]
<< continuation
▪ [0-07]:
Low
outdoor
ambient
temperature. 10°C~25°C (default:
20°C)
▪ [0-06]:
High
outdoor
ambient
temperature. 25°C~43°C (default:
35°C)
▪ [0-05]:
Desired
leaving
water
temperature
when
the
outdoor
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
water
suffices.
▪ [0-04]:
Desired
leaving
water
temperature
when
the
outdoor
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
is
required.
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
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
Description
[A.3.1.3.1]
[9-09]
Heating: required temperature
difference between entering and
leaving water. Range: 3°C~10°C (in
steps of 1°C; default value: 5°C).
[A.3.1.3.2]
[9-0A]
Cooling: required temperature
difference between entering and
leaving water. Range: 3°C~10°C (in
steps of 1°C; default value: 5°C).
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
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 exactly matching the desired
temperature (higher comfort level)
▪ less On/OFF cycles (lower noise level, higher comfort and higher
efficiency)
