5 Application guidelines
Installer reference guide
11
RRLQ004~008CA + RHBH/X04+08CB
ROTEX HPSU low temperature Bi‑bloc
4P384979-1 – 2015.01
NOTICE
If an external room thermostat is used, the external room
thermostat will control the room frost protection. However,
the room frost protection is only possible if the leaving
water temperature control on the unit's user interface is
turned ON.
INFORMATION
In case an external room thermostat is used and room frost
protection needs to be guaranteed in all conditions, then
you have to set auto emergency [A.5.1.2] to 1.
5.2.1
Single room
Under floor heating or radiators – Wired room
thermostat
Setup
B
A
a
A
Main leaving water temperature zone
B
One single room
a
User interface used as room thermostat
▪ The under floor heating or radiators are directly connected to the
indoor unit.
▪ The room temperature is controlled by the user interface, which is
used as room thermostat. Possible installations:
▪ User interface installed in the room and used as room
thermostat
▪ User interface installed at the indoor unit and used for control
close to the indoor unit + user interface installed in the room
and used as room thermostat
Configuration
Setting
Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
0 (1 LWT zone): Main
Benefits
▪
Cost effective
.
You do NOT need an additional external room
thermostat.
▪
Highest comfort and efficiency
. The smart room thermostat
functionality can decrease or increase the desired leaving water
temperature based on the actual room temperature (modulation).
This results in:
▪ Stable room temperature matching the desired temperature
(higher comfort)
▪ Less ON/OFF cycles (more quiet, higher comfort and higher
efficiency)
▪ Lowest possible leaving water temperature (higher efficiency)
▪
Easy
. You can easily set the desired room temperature via the
user interface:
▪ For your daily needs, you can use preset values and schedules.
▪ To deviate from your daily needs, you can temporarily overrule
the preset values and schedules, use the holiday mode…
Under floor heating or radiators – Wireless room
thermostat
Setup
B
A
b
a
A
Main leaving water temperature zone
B
One single room
a
Receiver for wireless external room thermostat
b
Wireless external room thermostat
▪ The under floor heating or radiators are directly connected to the
indoor unit.
▪ The room temperature is controlled by the wireless external room
thermostat (optional equipment RKRTR1).
Configuration
Setting
Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
0 (1 LWT zone): Main
External room thermostat for the
main
zone:
▪ #: [A.2.2.4]
▪ Code: [C-05]
1 (Thermo ON/OFF): When the
used external room thermostat or
heat pump convector can only
send a thermo ON/OFF
condition.
Benefits
▪
Wireless
.
The ROTEX external room thermostat is available in a
wireless version.
▪
Efficiency
.
Although the external room thermostat only sends ON/
OFF signals, it is specifically designed for the heat pump system.
▪
Comfort
.
In case of under floor heating, the wireless external
room thermostat prevents condensation on the floor during cooling
operation by measuring the room humidity.
