Danfoss RET2001OT, TPOne-OT Data sheet

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
	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.

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

Data Sheet

RET & TP Electronic Room Thermostats

Ordering

Product

Type

Supply

Output

Code no.

voltage

RET2001OT

Room Thermostat

24 V DC BUS

Data

087N6475

TPOne-OT

Programmable Room

3 V DC

Data

087N7859

Thermostat

Technical specifications

Feature

RET2001-OT

TPOne-OT

LCD backlit display

Dot Matrix LCD Display

Type

with text menu

with push buttons

and capacitive touch buttons

Setting temperature range

5 - 35°C

Operating temperature range

0 - 45°C

Fault indication

Yes

LCD Backlight

Yes

Output

Data 24 V DC BUS

Battery Life

Min 2 years

Power Suppy

24 V DC power line from boiler

3 V DC Battery

2 x alkaline

Wiring

non-polarised 2 wire bus

ErP class

Class V (efficiency gain 3%)

IP rating

IP30 (installed)

OpenTherm software version

v4.0

Low load control

Yes

Approval

CE marking, EN60730

Control pollution situation

Degree 2

Rated impulse voltage

2.5kV

Ball hardness test

75°C

Software classification

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

ErP

Modulating Room Thermostat, for use with modulating heaters

An electronic room thermostat that varies the flow temperature

of the water leaving the heater dependent upon measured room

Product

temperature deviation from room thermostat set point. Control is

Class 5

achieved by modulating the output of the heater.

Wiring connections

RET2001OT

TPOne-OT

OpenTherm

connections

in RET2001OT

in boiler

in TPOne-OT

in boiler

Wires can

be crossed

Set-back

External volt

connections

free contactor

in RET2001OT

/ switch

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.

AI306945861300EN-000101 | VDSUM102