Space Heating/Cooling - Rotex HPSU Bi-Bloc Ultra Series Installer's Reference Manual

# Code
[3.8.1] [9-05] Heating minimum: 15°C~37°C
[3.8.2] [9-06] Heating maximum
▪ [2‑0D]=2 (emitter type additional zone
= radiator)
37°C~60°C
▪ Else: 37°C~55°C
[3.8.3] [9-07] Cooling minimum: 5°C~18°C
[3.8.4] [9-08] Cooling maximum: 8°C~22°C
# Code
Leaving water temperature range for the main leaving water
temperature zone (= the leaving water temperature zone with the
lowest leaving water temperature in heating operation and the
highest leaving water temperature in cooling operation)
Heating minimum:
[2.8.1] [9-01]
▪ 15°C~37°C
[2.8.2] [9-00] Heating maximum:
▪ [2‑0C]=2 (emitter type main zone =
radiator)
37°C~70°C
▪ Otherwise: 37°C~55°C
[2.8.3] [9-02] Cooling minimum:
▪ 5°C~18°C
[2.8.4] [9-03] Cooling maximum:
▪ 18°C~22°C
Control
The control type for the additional zone is read only. It is determined
by the control type of the main zone.
zone" [ 4 55].
See "8.4.3 Main
# Code
Control
[3.9] N/A
▪ Leaving water if the control type of
the main zone is Leaving water.
▪ External
control type of the main zone is:
▪ External room thermostat,or
▪ Room thermostat.
Thermostat type
Only applicable in external room thermostat control.
zone" [ 4 55].
Also see "8.4.3 Main
# Code
[3.A] [C‑06] External room thermostat type for the
additional zone:
▪ 1: 1 contact. Connected to only 1
digital input (X2M/35a)
▪ 2: 2 contacts. Connected to 2 digital
inputs (X2M/34a and X2M/35a)
Leaving water temperature: Delta T
For more information, see "8.4.3 Main
RRGA04~08DAV3 + RHBX04+08DA
ROTEX HPSU Bi-Bloc Ultra
4P495262-1B – 2019.10
Description
Description
Description
room thermostat if the
Description
zone" [ 4 55].
# Code
[3.B.1] [1-0C] Delta T heating: A minimum
temperature difference is required for the
good operation of heat emitters in
heating mode.
▪ If [2-0D] = 2, this is fixed to 10°C
▪ Else: 3°C~10°C
[3.B.2] [1-0E] Delta T cooling: A minimum
temperature difference is required for the
good operation of heat emitters in
cooling mode.
▪ 3°C~10°C
8.4.5

Space heating/cooling

About space operation modes
Your unit can be a heating or a heating/cooling model:
▪ If your unit is a heating model, it can heat up a space.
▪ If your unit is a heating/cooling model, it can both heat up and cool
down a space. You have to tell the system which operation mode
to use.
To determine if a heating/cooling heat pump model is installed
1 Go to [4]: Space heating/cooling.
2 Check if [4.1] Operation mode is listed and editable.
If so, a heating/cooling heat pump model is installed.
To tell the system which space operation to use, you can:
You can...
Check which space operation mode is
currently used.
Set the space operation mode permanently. Main menu
Restrict automatic changeover according to
a monthly schedule.
To check which space operation mode is currently used
The space operation mode is displayed on the home screen:
▪ When the unit is in heating mode, the
▪ When the unit is in cooling mode, the
The status indicator shows if the unit is currently in operation:
▪ When the unit is not in operation, the status indicator will show a
blue pulsation with an interval of approximately 5 seconds.
▪ While the unit is in operation, the status indicator will light up blue
constantly.
To set the space operation mode
1 Go to [4.1]: Space heating/cooling > Operation
mode
2 Select one of the following options:
▪ Heating: Only heating mode
▪ Cooling: Only cooling mode
▪ Automatic: The operation
automatically based on the outdoor temperature.
Restricted according to the operation mode
schedule.
Automatic heating/cooling changeover is only applicable for RHBX.
When Automatic is selected, the unit switches its operation mode,
based on the Operation mode schedule [4.2]. In this schedule, the
end user indicates which operation is allowed for each month.
To restrict automatic changeover according to a schedule
Conditions: You set the space operation mode to Automatic.
8 Configuration
Description
Location
Home screen
icon is shown.
icon is shown.
mode changes
Installer reference guide
61