Danfoss TPOne Electronic Room Thermostats Technical Specification Data Sheet


Danfoss TPOne Electronic Room Thermostats 



TPOne Programmable Room Thermostat platform delivers new levels of user-friendly interaction. The flexible dot matrix display uses easy read icons and text information to provide feedback on status and settings to the installer and user. When the display is activated the backlight illuminates and guides are given on the what buttons will adjust temperatures or navigate the setting menus. Chrono Proportional, Load Compensation control is the default heat regulation system that will deliver increased comfort and improved economy over standard on/off control. Standard On/Off can also be selected. When the chrono-proportional mode is set, the thermostat introduces a fixed cycle rate on the system and then determines the duration of the On and Off periods within each cycle in proportion to load. The control algorithm used to determine the on/off periods uses a proportional + integral (PI) routine to eliminate offset normally associated with on/off or simple proportional control. Chrono-proportional control significantly improves comfort and generally improves boiler efficiency by optimising water temperature. For TPOne we have redesigned the heating startup options. Standard startup is default giving instant heat at the scheduled time. New dynamic Delayed and Optimised start features are also selectable. Delayed start will pause the heating startup at the scheduled time dependant on the difference between ambient and required temperature which will decrease energy usage. Optimized start will monitor the difference between ambient and required temperature and will calculate the best time to start heating to hit setpoint at the scheduled time. Both features dynamically adjust according to performance accuracy each day to ensure most acurate control and remove the need for manual setting and adjustment.


Additional TPOne features include:

  • Seperate User & Installer Setting Menus
  • Holiday Scheduler
  • Upper and Lower Temperature Limits
  • Capacitive Touch Button Control
  • Push Button Lock
  • °C or °F Selectable Display
  • Audible Button Click (selectable)
  • Frost Protect Temperature Setting
  • Selectable Domestic Hot Water Channel (Mains Variant only)
  • Clear Text Display (7 Languages)
  • External Sensor/Window Switch input
  • Boiler Service Timer

TPOne Comfort Modes


TPOne Programmable Room Thermostat introduces the quick access Scenario interface. To the left of the display are 4 dedicated user buttons. As a programmable device heating is controlled by a preset schedule but sometimes our schedules change intermittently so we have made it easy for the user to adapt their heating to suit. The Home, Away & Asleep buttons allow the user to quickly change the current setting to either save energy or deliver comfort when needed. These manual overrides stay until the next scheduled heating change so no need to remember to switch back to automatic control. The additional standby button also gives the control to stop the heating completely, this will save energy when airing the home or can be used to switch off during Summer months without having to change the schedule. Standby remains until the user chooses to switch back on.

Specifications and Ordering Information

Thermostat Features TPOne-M TPOne-B TPOne-RF + RX1-S
Ordering codes 087N785200 087N785100 087N785400
Code without receiver 087N785300
Product Line 03 03 03
Type Programmable Thermostat RF Programmable Thermostat
Power Supply TPOne 230Vac, 50/60Hz 2.5 – 3VDC (2x AA Alkaline Batteries)
Battery Life Min 2 years
Power Supply RX1-S 230Vac, 50/60Hz
Output Channel 1 Volt free, SPDT type 1B Volt free, SPDT type 1B (RX1-S)
Switch Rating Channel 1 3A at 230Vac 3A at 230Vac (RX1-S)
Output Channel 2 3A at 230Vac
Operating Frequency 433.92MHz
Maximum Range 30 meters
Setting temperature range 5-35 °C
Operating temperature range 0-45 °C
IP Rating IP20
On/Off Control Yes
Chrono-proportional control Yes
Dimensions (mm) H66 x W155 x D30
Dimensions (mm) RX1-S H84 x W84 x D28

ErP Class

ERP Class
The products represented within this document are classified according to, and allow completion of, the Energy Related Product (ErP) Directive System Package fiche 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


TPI Room Thermostat, for use with on/off output heaters

An electronic room thermostat that controls both thermostat cycle rate and in-cycle on/off ratio of the heater proportional to room temperature. TPI control strategy reduces mean water tem-

perature, improves room temperature control accuracy and enhances system efficiency.



Wiring Details


Danfoss Ltd. Ampthill Road Bedford MK42 9ER
Tel: 01234 364621
Fax: 01234 219705
Email: [email protected]
Website: www.heating.danfoss.co.uk
Danfoss can accept no responsibility for possible errors in catalogues, brochures, and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.
All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.


Danfoss TPOne Electronic Programmable Room Thermostat Installation Guide


Danfoss TPOne Electronic Room Thermostats Technical Specification Data Sheet


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