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Danfoss RET2001OT Manual

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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?
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.
© Danfoss | FEC | 03.2020 087R1002
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed ma-
terial. 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 logo-
type are trademarks of Danfoss A/S. All rights reserved.
Danfoss A/S
Heating Segment • danfoss.com • +45 7488 2222 • E-mail: heating@danfoss.com
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
Display and Navigation Details
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
Symbols Function description Symbols Function description
Parameter number
in setup Frost protect active
Room temperature Holiday mode
Temperature
indication Power on/off
SET
Set temperature MMode change /
option setting
Heating active 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.


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