User manual HONEYWELL CM921

[. . . ] DRAWING DETAILS PART NUMBER ISS ECO AND DATE 42011077-103 R1 0024168 08/06 DRAWN MKTING DATE ARTWORK DESCRIPTION CM921 USER GUIDE BOOKLET (UK - English) MF BM 08/06 BOOKLET DETAILS SPECIFICATION COVER INNERS 22 page A6 : Saddle stitch (2-wire) 6 page : 4 colour : 170gsm Silk 18 page : 1 colour : 100gsm Silk SPECIAL INSTRUCTIONS 105mm (back) 103mm (front) 100mm (throw out) Description The Honeywell CM921 is a `wireless' programmable room thermostat designed to control you heating system efficiently, providing comfortable temperatures when you are at home and energy savings when you are away. With `wireless' communication there is no need to provide a wired connection between the thermostat and boiler. The following instructions explain how to set up, program and operate your Honeywell CM921 Programmable Room Thermostat. Features Wireless connection to the boiler allows you to mount the Chronotherm in your room without decor disruption Armchair programming feature lets you program your Chronotherm while resting comfortably in your armchair Ergonomic User Interface features an `OK-button' making the CM921 very easy to use so you always stay in control. 148mm LoT technology 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. [. . . ] 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 setpoint can be adjusted from 5°C to 35°C by using the or buttons. The thermostat will continue to maintain this 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 To adjust only the time during normal operation use the or buttons to adjust the time and press the green button again to confirm any changes. 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. opERATING THE CM921 · Temperature Override During normal operation (AUTO mode) the programmed temperature can be adjusted manually by pressing the or buttons. The `target` temperature will be displayed and flash for 5 seconds ­ during this time the or buttons can be used to modify the set value. Note: This temperature override is cancelled at the next programmed temperature change. Using the Special Functions · HOLIDAY Function The holiday function allows you to set a constant temperature (default = 10°C) for a specified number of days (from 1 - 99 days). This lets you save energy and related costs when you are away from home, but resumes normal operation on the day of your return. Move the slider switch to the AUTO or MAN position. Press the button to display the holiday days counter and temperature setting, along with the holiday indicator . The day after the current day will be selected and `RETURN DATE OK?' will be displayed. Press the or time buttons to set the holiday time (1 ­ 99 days). Note: (The day and date will update according to the number of days selected). Press the green button to confirm the setting. e. `CHANGES SAVED' will be displayed for a moment followed by `TEMP OK?'. Press the or buttons to set the holiday temperature (5°C - 35°C) f. Press the green button to confirm the setting. [. . . ] Refer to the Troubleshooting Guide on page 15. If you still need assistance after this call your installer. The thermostat should only be opened or removed by a qualified professional to prevent possible injury from electric shock and/or damage to the product. 1 WHAT IS A pRoGRAMMAblE RooM THERMoSTAT? . . . an explanation for householders (The following explanation applies to heating applications only) A programmable room thermostat is both a programmer and a room thermostat. A programmer allows you to set `On' and `Off' time periods to suit your own lifestyle. [. . . ]