Danfoss RET2001OT User guide

Display and Navigation Details

SET

Symbols Function description Symbols Function description

Easy User Guide

RET2001OT

Digital OpenTherm™ Room Thermostat

BC337370343702en-000101 | 087R1002 www.danfoss.com

Introduction

The RET2001OT room thermostat varies the heat output of an
OpenTherm compatible condensing boiler by modulating the boiler
flame. This improves boiler efficiency and maintains economical
condensing mode whenever possible.
Daily use is as easy as setting the thermostat to the required
temperature, the advanced electronics and software within the
thermostat establishes two-way communication with the boiler to
ensure optimal operation.

What is a room thermostat?

Parameter number
in setup

Room temperature Holiday mode

Temperature
indication

Set temperature M

Heating active

Frost protect active

Power on/off

Mode change /
option setting

Temperature / option
setting selectors

Frost Protection Temperature and Reset

a. You can switch the thermostat is turned OFF(Standby) mode

by alternately pressing . In OFF(Standby) mode thermostat is set
to a Frost Protection temperature setting and will switch On only if
the measured temperature falls below this temperature
(5 °C by default).

b. The frost protect icon and current temperature will be display.
c. At this point if button is press for 10 seconds. Continuously then

thermostat will be reset.

A room thermostat controls the heating in your home by keeping it
at the temperature you have set. Room thermostats switch off the heat
when the temperature reaches a set point, and switch it on when it falls
below. The heating will not come on if the room temperature is above
the room thermostat set temperature.
Remember that turning the thermostat up will not heat the room any
faster. The higher the thermostat setting the more gas you will use.

Setting the Temperature

a. Press or at any time to change the desired temperature value.

SET is shown in the display.

b. When releasing the or , the display returns to showing the actual

temperature.

Holiday Mode

Holiday Mode selects the Holiday comfort temperature typically when
the home is unoccupied during the day.

a. Press M to enter into Holiday mode and will be displayed.
b. Holiday mode temperature can be set in User settings, option 07.
c. Press M again to exit Holiday mode.

Display and Navigation Details

User Settings

a. Press M button for 6 seconds to enter the param- eter setting mode.

Press M for parameter selection and set the parameter range via or .
Complete all adjustments.

b. To exit press the upper part of the setting ring, or it will automatically

exit after 20 seconds when no button is pressed.

No. Parameter settings Settings range Default

04 Temperature limit high Between low (05) and 35 °C 35 °C

05 Temperature limit low Between 5 °C and high (04) 5 °C

06 Frost protect temperature Between 5 °C and 15 °C 5 °C

07 Holiday mode temperature Between low (05) and high (04) 18 °C

Danfoss A/S

Heating Segment • danfoss.com • [phone] • E-mail: [e-mail]

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 | FEC | 03.2020

087R1002