5 Application guidelines
Installer reference guide
10
RRLQ004~008CA + RHBH/X04+08CB
ROTEX HPSU low temperature Bi‑bloc
4P384979-1 – 2015.01
Remote sensor for wireless thermostat (EKRTETS)
You can use a wireless indoor temperature sensor (EKRTETS) only
in combination with the wireless thermostat (RKRTR1).
For installation intructions, see the installation manual of the room
thermostat and addendum book for optional equipment.
Digital I/O PCB (EKRP1HB)
The digital I/O PCB is required to provide following signals:
▪ Alarm output
▪ Space heating/cooling On/OFF output
▪ Changeover to external heat source
For installation instructions, see the installation manual of the digital
I/O PCB and addendum book for optional equipment.
Demand PCB (EKRP1AHTA)
To enable the power saving consumption control by digital inputs
you must install the demand PCB.
For installation instructions, see the installation manual of the
demand PCB and addendum book for optional equipment.
Remote outdoor sensor (EKRSCA1)
By default the sensor inside the outdoor unit will be used to measure
the outdoor temperature.
As an option the remote outdoor sensor can be installed to measure
the outdoor temperature on another location (e.g. to avoid direct
sunlight) to have an improved system behaviour.
For installation instructions, see the installation manual of the remote
outdoor sensor.
PC configurator (EKPCCAB)
The PC cable makes a connection between the switch box of the
indoor unit and a PC. It gives the possibility to upload different
language files to the user interface and indoor parameters to the
indoor unit. For the available language files, contact your local
dealer.
The software and corresponding operating instructions are available
on the ROTEX homepage.
For installation instructions, see the installation manual of the PC
cable and
.
Heat pump convector (RFWXV)
For providing space heating/cooling, it is possible to use heat pump
convectors (RFWXV).
For installation instructions, refer to the installation manual of the
heat pump convectors, and the addendum book for optional
equipment.
Drain pan kit (EKHBDPCA2)
The drain pan is required to drain accumulated condensation from
the indoor unit. It is required during low temperature cooling
operation of the indoor unit and when the leaving water temperature
is <18°C.
For installation instructions, see the installation manual of the drain
pan kit.
Domestic hot water tank
The domestic hot water tank can be connected to the indoor unit for
providing domestic hot water.
4.3.3
Possible combinations of indoor unit and outdoor unit
Indoor unit
Outdoor unit
RRLQ004CAV3
RRLQ006CAV3
RRLQ008CAV3
RHBH04CB3V
O
—
—
RHBX04CB3V
O
—
—
RHBH08CB3V
—
O
O
RHBX08CB3V
—
O
O
RHBH08CB9W
—
O
O
RHBX08CB9W
—
O
O
5
Application guidelines
5.1
Overview: Application guidelines
The purpose of the application guidelines is to give a glance of the
possibilities of the ROTEX heat pump system.
NOTICE
▪ The illustrations in the application guidelines are meant
for reference only, and are NOT to be used as detailed
hydraulic
diagrams.
The
detailed
hydraulic
dimensioning and balancing are NOT shown, and are
the responsibility of the installer.
▪ For more information about the configuration settings to
optimize heat pump operation, see
.
This chapter contains application guidelines for:
▪ Setting up the space heating/cooling system
▪ Setting up an auxiliary heat source for space heating
▪ Setting up the domestic hot water tank
▪ Setting up the energy metering
▪ Setting up the power consumption
▪ Setting up an external temperature sensor
5.2
Setting up the space heating/
cooling system
The heat pump system supplies leaving water to heat emitters in one
or more rooms.
Because the system offers a wide flexibility to control the
temperature in each room, you need to answer the following
questions first:
▪ How many rooms are heated (or cooled) by the ROTEX
heat pump system?
▪ Which heat emitter types are used in each room and what is their
design leaving water temperature?
Once the space heating/cooling requirements are clear, ROTEX
recommends to follow the setup guidelines below.
