Data Sheet
RET2001OT & TPOne-OT
Electronic Room Thermostats
Application
RET2001OT
RET & TP room thermostats are used typically in gas boiler and wall hung radiator heating sys-
tems. The RET2001OT & TPOne-OT are sophisticated room thermostat which provide modulating control of OpenTherm compatible gas boilers.
These thermostats exchange data with the boiler they control as opposed to on/off commands. This type of control, in addition to providing closer, more accurate room temperature control, also ensures that the flow temperature from the boiler is modulated down to as low a level as prevailing load permits. Compared to simple on/off thermostats RET2001OT & TPOne-OT significantly increasing the proportion of the boiler operating time that is spent in economic condensing mode. These thermostats are fully compliant with the OpenTherm communications protocol including low load regulation.
Functions
Room Thermostat, RET2001OT
Temperature selection is digital from the setting ring that circles the large easy to read backlit display. RET2001OT includes a frost protection feature as well as holiday mode with setback temperature for energy saving while you are away.
Additional features:
•Max. and min. temperature limit settings
•User selectable frost and holiday temperatures
TPOne Comfort Modes |
TPOne Programmable Room Thermostat |
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introduces the quick access Scenario interface. |
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To the left of the display are 4 dedicated user |
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buttons. As a programmable device heating is |
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controlled by a preset schedule but sometimes |
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our schedules change intermittently so we have |
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made it easy for the user to adapt their heating |
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to suit. |
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The Home, Away & Asleep buttons allow the user |
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to quickly change the current setting to either |
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save energy or deliver comfort when needed. |
TPOne-OT
Programmable Room Thermostat, TPOne-OT
TPOne 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 what buttons will adjust temperatures or navigate the setting menus.
The schedule setup is flexible and users can choose 24hr, 5-2day or full 7day programming with optional 1, 2 or 3 heating periods.
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
•Clear text display (9 Languages)
•Bolier service timer
The RET & TPOne room thermostats combine modern design with efficient heating control, ease of operation and high quality construction to help provide reliable home comfort.
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.
VDSUM102 |
© Danfoss | ERC | 2019.05 |
Data Sheet |
RET & TP Electronic Room Thermostats |
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Ordering |
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RET2001OT |
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Room Thermostat |
24 V DC BUS |
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Data |
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087N6475 |
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TPOne-OT |
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Programmable Room |
3 V DC |
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Data |
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087N7859 |
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Thermostat |
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Technical specifications |
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Feature |
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RET2001-OT |
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TPOne-OT |
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LCD backlit display |
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Dot Matrix LCD Display |
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Type |
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with text menu |
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with push buttons |
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and capacitive touch buttons |
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Setting temperature range |
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5 - 35°C |
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Operating temperature range |
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0 - 45°C |
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Fault indication |
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Yes |
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LCD Backlight |
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Yes |
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Output |
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Data 24 V DC BUS |
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Battery Life |
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Min 2 years |
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Power Suppy |
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24 V DC power line from boiler |
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3 V DC Battery |
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2 x alkaline |
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Wiring |
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non-polarised 2 wire bus |
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ErP class |
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Class V (efficiency gain 3%) |
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IP rating |
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IP30 (installed) |
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OpenTherm software version |
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v4.0 |
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Low load control |
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Yes |
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Approval |
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CE marking, EN60730 |
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Control pollution situation |
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Degree 2 |
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Rated impulse voltage |
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2.5kV |
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Ball hardness test |
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75°C |
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Software classification |
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A |
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ErP Class |
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ERP Class |
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The products represented within this document are classified according to, and allow completion of, the Energy |
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Related Product (ErP) Directive System Package fiche and the ErP system data label. ErP Labelling obligation is |
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applicable from 26th September 2015. |
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ErP Class |
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Product Function and ErP Description |
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Additional efficiency |
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gain |
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ErP |
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Modulating Room Thermostat, for use with modulating heaters |
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An electronic room thermostat that varies the flow temperature |
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of the water leaving the heater dependent upon measured room |
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3% |
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Product |
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temperature deviation from room thermostat set point. Control is |
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Class 5 |
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achieved by modulating the output of the heater. |
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Wiring connections |
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RET2001OT |
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TPOne-OT |
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OpenTherm |
A |
OpenTherm |
OpenTherm |
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OpenTherm |
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connections |
B |
connections |
connections |
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B |
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connections |
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in RET2001OT |
in boiler |
in TPOne-OT |
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in boiler |
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Wires can |
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Wires can |
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be crossed |
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be crossed |
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Set-back |
1 |
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External volt |
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connections |
2 |
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free contactor |
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in RET2001OT |
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/ switch |
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Important - To avoid damage to Boiler and Thermostat, connect only to OpenTherm connections on boiler, do not connect to any other power source.
Danfoss Limited
Heating Segment • heating.danfoss.co.uk • +44 (0)330 808 6888 • E-mail: customerservice.uk@danfoss.com
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 speci cations already agreed.
All trademarks in this material are property of the respective companies. Danfoss and all Danfoss logotypes are trademarks of Danfoss A/S. All rights reserved.
© Danfoss | ERC | 2019.05 |
AI306945861300EN-000101 | VDSUM102 |