User manual HONEYWELL CM901

[. . . ] Arlington Business Park, Bracknell Berkshire RG12 1EB Technical Help Desk: 08457 678999 www. honeywelluk. com 42010943-103 R1 © 2005 Honeywell International Inc. CM901 - User Guide 1 day Programmable Room Thermostat Optimum Start option is an advanced feature which ensures that the optimum temperature conditions are achieved at the required times. Controls Layout 1 2 3 4 Contents 5 6 GETTING STARTED WITH THE CM901 7 8 STEP 1: Installing the Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 STEP 2: Setting the Date and Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 PROGRAMMING THE CM901 The Built-in Heating Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Reviewing the Heating Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Note: If the unit is left in programming mode for more than 10 minutes without the slider being moved or any buttons pressed, `MOVE THE SLIDER' will be displayed. Press a button to finish programming the thermostat or move the slider to select the desired operating mode. 6 PROGRAMMING THE CM901 Disabling / Enabling Time Periods The thermostat has 6 periods that can be programmed, but you may not need all of these switch points for your heating requirements. Therefore, any period from 2 to 6 can be disabled or enabled as follows: To disable time periods: Go to the desired period ( 2 to 6 ) by moving the slider switch to the PROG buttons to navigate, ensuring the correct and position, then using the period is highlighted with the flashing square symbol. Press and hold the button for at least 2 seconds and the display will indicate the period has been removed from the program. To enable time periods: Navigate to the disabled period by moving the slider switch to the PROG buttons. Once selected `DISABLED' will be and position, then using the displayed. Press and hold the button for at least 2 seconds and `ENABLED' will be displayed for a moment before returning to normal programming mode. 7 OPERATING THE CM901 Choosing the Operating Mode The thermostat can operate in three different modes: Automatic, Manual or Off. To set the operating mode move the slider switch to the desired position. The screen indicates which mode is currently active by displaying AUTO, MAN or OFF. · AUTO (automatic) mode Automatic mode sets the thermostat to follow the temperature program (default or personalised). Operating the thermostat in this mode is the best way to maintain a high level of temperature comfort whilst maximising your energy savings. · MAN (manual) mode Manual mode sets the thermostat to act as a simple thermostat with a fixed setpoint throughout the day. The thermostat will continue to maintain this by using the temperature until another operating mode or temperature is selected. · OFF mode Off mode sets the thermostat to control to a minimum temperature setting of 5°C (default) that acts as a frost protection measure for your home. This value can be adjusted by calling your installer. Adjusting the Time or buttons to adjust To adjust only the time during normal operation use the button again to confirm any changes. the time and press the green During Normal Operation · Temperature Enquiry In AUTO and MAN operating modes the thermostat will display the current room temperature, which is indicated by the text `ROOM TEMP' displayed on the screen. To review the programmed `target' temperature (the temperature which the thermostat is trying to maintain) press the button. This `target' temperature value will be displayed flashing and the text `TARGET TEMP' will be shown for 5 seconds before returning to the current room temperature value. In OFF operating mode the thermostat again displays the current room temperature, as above, but when the button is pressed the text `FROST TEMP' is displayed indicating the set value to protect your home. To modify this value please contact your installer. 8 OPERATING THE CM901 · Temperature Override During normal operation (AUTO mode) the programmed temperature can be or buttons. Move the slider switch to the OFF position, then press and hold the approximately 5 seconds. button for approximately 5 seconds. button for DAY COPY DAY OFF DATE PROG AUTO MAN OFF CM907 1. . 6 b. Once entered the following information will be shown on the screen: 10 FINE TUNING THE CM901 c. Now choose which one of the following parameters you would like to change: i) Change the time format or `CLOCK SELECT' should be displayed on the screen - press the buttons to select the preferred time format (12=AM/PM format, 24=24hr format) and the display will flash, indicating a change has been made. change press the green ii) Reset the built-in program to the factory default time button once. [. . . ] Any adjustments above these settings will waste energy and cost you more money. If your heating system is a boiler with radiators, there will usually be only one programmable room thermostat to control the whole house. But you can have different temperatures in individual rooms by installing thermostatic radiator valves (TRVs) on individual radiators. If you don't have TRVs, you should choose a temperature that is reasonable for the whole house. [. . . ]