For The Installer - Rehau STAR 20 Installation Manuallines

3.
3.2
The CE approved REHAU STAR controls range has been specifi cally developed to work
with underfl oor heating.
Advanced controllers combined with a simple plug in wiring centre
and boiler/pump logic module to allow you to offer customers a
bespoke package of controls perfectly suited to the requirements of
their individual property.
The electronic Pulse Width Modulation (PWM) system used throughout
operates using a constant comparison of desired and actual
temperature. The opening period of the actuators is adjusted to avoid
over and under shoot, achieving more precise and comfortable control
of the set point desired temperature.
8
REHAU STAR CONTROLS

FOR THE INSTALLER

Night setback which can achieve energy savings of up to 30% for
homeowners is standard on all three controllers and frost protection
mode is available on the digital and programmable units.
Installation of all the units is fast and straightforward. The wiring
centre uses plug-in cable connections for up to 6 thermostats and 24
actuator units and the pump/boiler logic module is a simple effi ciency
add on which enables the pump only to be switched on when hot
water is required.
Electrical installation of the controllers must be carried out in accordance
with the current wiring regulations and the connection plan. Only approved
certifi ed professionals may carry out the installation.
To reduce call outs and to provide peace of mind for the user, a
valve protection feature automatically opens the valves once a week
to ensure that they are fully operational even when the underfl oor
heating is switched on after Summer down times.