Honeywell manual CM901 User Guide

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Honeywell Control Systems Ltd.

 

Arlington Business Park,

 

Bracknell

 

Berkshire

 

RG12 1EB

 

Technical Help Desk: 08457 678999

42010943-103 R1

www.honeywelluk.com

© 2005 Honeywell International Inc.

CM901 - User Guide

1 day Programmable Room Thermostat

Description

The Honeywell CM901 is a programmable room thermostat designed to control your heating system efficiently, providing comfortable temperatures when you are at home and energy savings when you are away. The following instructions explain how to program and use the CM901 to provide the most home comfort at the least cost.

Features

Ergonomic User Interface features an ‘OK-button’ making the CM901 very easy to use so you always stay in control.

Dynamic Text Display provides informative ‘on-screen’ feedback and operational assistance to the user.

Extra Large LCD (Liquid Crystal Display) Screen with Backlight provides added user friendliness and clearer viewing – even in the dark.

6 independent temperature levels lets you set any 6 temperatures you require (from 5 to 35°C) so you can enjoy economical comfort throughout the day.

Holiday button saves energy by letting you reduce the temperature for 1 to 99 days while you are away from home, resuming normal operation on your return.

Automatic Summer/Winter Time Change will adjust the clock automatically for ‘Daylight Saving Time’.

Built-in Memory holds the user program indefinitely so that it is never lost

– even if you remove the batteries.

Outside Temperature Sensor (optional accessory) can be fitted to the CM901 to display the temperature outside your home.

Remote Temperature Sensor (optional accessory) can be fitted to the CM901 to control to the room temperature in another location, concealing the CM901.

Optimum Start option is an advanced feature which ensures that the optimum temperature conditions are achieved at the required times.

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Contents CM901 User Guide Controls Layout Contents To install the Batteries Installing the BatteriesRunning the Built-in Heating Program Setting the Date and TimeTo set the Date and Time Reviewing the Heating Program Built-in Heating ProgramModifying the Heating Program To press or buttons To enable time periods To disable time periodsDisabling / Enabling Time Periods Adjusting the Time Choosing the Operating ModeDuring Normal Operation Temperature Override Using the Special FunctionsHoliday Function To set the Holiday functionTo change any of these user’s parameters Changing the User ParametersIii Enable or disable summer/winter time change Ii Reset the built-in program to the factory defaultChange the time format What is Optimum Start? How do I set one temperature for the whole day?Can I use my CM901 to control my air-conditioning system? Remote Temperature Sensor Accessory Symptom Possible Cause Remedy Troubleshooting GuideAn explanation for householders What is a Programmable Room THERMOSTAT? 42010943-103 R1

CM901 specifications

The Honeywell CM901 is a highly efficient, programmable room thermostat designed for residential heating systems. This versatile device caters to the needs of homeowners by combining user-friendly features with advanced technology to ensure optimal climate control in living spaces.

One of the standout features of the CM901 is its ability to offer seven-day programming. Users can set different heating schedules for each day of the week, allowing for flexibility according to their lifestyle. This functionality is particularly beneficial for families with varying routines, enabling energy savings during times when the home is unoccupied. Users can program the thermostat to reduce heating in the mornings when they are away and ramp up the temperature just before they return home.

The CM901 supports a wide range of heating systems, including gas, oil, and electric boilers, as well as underfloor heating systems. This compatibility makes it suitable for a variety of homes and heating setups, ensuring that it can meet the unique needs of different households. Furthermore, its easy installation process allows homeowners or contractors to set it up with minimal hassle.

Equipped with an intuitive interface, the CM901 features a clear LCD display that shows the current room temperature and set point at a glance. The backlit screen enhances usability, enabling users to read the display in low-light conditions. The device also allows for manual override, making it convenient for users to adjust settings on-the-fly without interfering with their programmed schedule.

Energy efficiency is a prime focus of the CM901, as it helps reduce heating costs while maintaining comfort. Its precise temperature control and programming capabilities ensure that heating is only used when necessary, leading to reduced energy consumption. This not only benefits the environment but also helps homeowners save money on their energy bills.

In terms of build quality, the Honeywell CM901 boasts a sleek and modern design that fits seamlessly into contemporary home decor. Its durable construction ensures longevity, offering reliable service for years to come.

Overall, the Honeywell CM901 stands out as a practical solution for homeowners seeking a blend of comfort, efficiency, and ease of use in their heating systems. With its programmable features, adaptability, and user-friendly interface, the CM901 is an excellent choice for those looking to enhance their indoor climate control experience.
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