3
Installation Instructions
ErP Class
The products represented within this document are classied according 
to, and allow completion of, the Energy Related Product (ErP) Directive 
System Package che and the ErP system data label.  ErP Labelling 
obligation is applicable from 26th September 2015.
ERP Class Product Function and ErP Description
Additional 
efficiency 
gain
IV
TPI Room Thermostat, for use with on/off 
output heaters
An electronic room thermostat that controls 
both thermostat cycle rate and in-cycle on/
o ratio of the heater proportional to room 
temperature.  TPI control strategy reduces 
mean water temperature, improves  room 
temperature control accuracy and enhances 
system eciency.
2%
Product
Class
Specications TPOne-M
Operating Voltage 230Vac, 50/60Hz
Output 1 (Heating) Volt Free
Setting temperature range 5-35°C
Operating temprature range 0-45°C
Switch rating 1 3A (1) at 230Vac
Switch type 1 1 x SPDT Type 1B
Output 2 (Domestic Hot Water)  230Vac
Switch rating 2  3A (1) at 230Vac
Switch type 2  1 x SPDT Type 1B
IP rating IP20
On/o control Yes
Chrono-proportional control Yes
Operating mode Heating
Construction EN 60730-2-9
Control pollution situation Degree 2
Rated impulse voltage 2.5kV
Ball pressure test 75°C
Dimensions (mm) H67 x W154 x D30
Software Classication A