Name: Honeywell DT90
Brand: Honeywell
SKU: 272953
Rating: 90 (5 reviews)

EN0H 8578 UK07 R1 12/08

DT90

DIGITAL ROOM THERMOSTAT

PRODUCT SPECIFICATION SHEET

The new DT90 family of digital room thermostats is a range of market leading products designed to provide comfort with economy in modern heating systems. Its large display and simple button interface make DT90 extremely easy to use.

Energy efficiency is addressed by state-of-the-art TPI control performance and an ECO button energy saving feature.

Applications include control of gas or oil-fired boiler systems, underfloor heating, electric heating and zoning systems.

With a modern fresh look that complements any style of décor, and a range of valued features for users and installers alike, DT90 sets the standard for simple environmentally-friendly room thermostats.

FEATURES

 Energy saving TPI control performance

 Advanced self-learning control adapts to the

environment and ensures close temperature control with minimum energy usage

 Slim modern styling

 Large high contrast display with easy-to-read

characters

 Simple user interface

 Temperature setting procedure eliminates the

risk of accidental setpoint change

 Display shows room temperature, with option

to inquire about setpoint

 5°C to 35°C setpoint range with 0.5°C

increments

 Temperature set using up or down buttons

 Off/standby button, allowing manual switch off,

with frost protection active

 Adjustable off/standby setpoint 5°C to 16°C or

DT90 can be set to off completely

 Battery powered by 2 x AA (LR6) alkaline cells

 Up to 4 years battery life (minimum 2 years),

with battery low warning

 Simple battery change by unclipping front

cover

 Installer Mode allows the thermostat to be

customised for the application and the needs of the user

 NVRAM storage of setup parameters, ensuring

these are never lost

 Setpoint limits can be programmed in

 24…230Vac SPDT potential-free contacts for

simple 2-wire installation

 8 A resistive, 3 A inductive switch rating

 Surface or switch-box mounting options

 Sensor fault self-diagnostics

 Heat/cool changeover operation mode possible

FEATURES UNIQUE TO DT90E ECO MODEL

 Energy saving ECO button allows user to

change to a lower, energy saving setpoint for a timed period of their choosing (1…24 hours)

 Display shows countdown of time remaining in

ECO energy saving mode

Need help?

Number of questions: 9

Do you have a question about the Honeywell DT90 or do you need help? Ask your question here. Provide a clear and comprehensive description of the issue and your question. The more detail you provide for your issue and question, the easier it will be for other Honeywell DT90 owners to properly answer your question.

Kieran, 30-11-2020 18:36:33 No comments

How can you racing thermostat to wireless box

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Stuart, 6-1-2021 12:47:37 No comments

Setting tmer

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Michael Pursall, 12-10-2021 13:46:03 No comments

HOW DO YOU TURN IT OFF

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dominic, 11-10-2021 12:57:22 No comments

when i try to bond the DT90e on the second step witch is to move down from inst to count, why will it not let me scroll down? i cn go up and then down but not down to count. Can you help

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Paul, 7-7-2021 13:24:21 No comments

how do I bind it to my heating system

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Geraldine Matthews, 13-5-2021 15:28:49 No comments

How do I replace the AAu batteries?

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Allan, 6-4-2021 21:23:50 No comments

What does it mean if neither red nor green light is showing on the wireless relay. If the thermostat is working correctly shouldn’t the relay be showing a constant green light?

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Malcolm, 16-2-2021 19:10:43 No comments

Hi, I have just purchased the DT 90 E stat to replace an old 3 wire stat, forgive me but which terminal should the third (load ) wire be connected to, at the moment I am blowing fuses or getting no reaction from the boiler as in no heat. I would appreciate any advice. Many thanks.

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Lesley Collins, 2-1-2021 09:36:10 No comments

Our thermostat is intermittently sulking and although it looks like it’s working the rads get cold. Have tried new batteries and turning it on and iff

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About the Honeywell DT90

View the manual for the Honeywell DT90 here, for free. This manual comes under the category Thermostat and has been rated by 5 people with an average of a 9. This manual is available in the following languages: English. Do you have a question about the Honeywell DT90 or do you need help? Ask your question here