Honeywell CM721 Programmable Room Thermostat User Guide

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

CM721..................................2-6  

CM727................................7-11  

USER GUIDE  

1

firealarmresources.com  

VIEW FULL SCREEN PDF MANUAL

General	Details
Name	Honeywell CM721 Programmable Room Thermostat User Guide
Make	Honeywell
Language	English
Filetype	PDF (Download)
File size	0.26 MB

Download PDF

(1 votes, average: 5.00 out of 5)

Loading...

• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• Honeywell

Honeywell CM721 Programmable Room Thermostat User Guide Overview

Summary of Contents

• Page 1: USER GUIDE
• Page 2: CM721 - User Guide The Honeywell CM721 is a programmable room thermostat designed to control your heating system efficiently. Ergonomic user interface featuring an ‘OK-button’. Large LCD (Liquid Crystal Display) screen. Four independent temperature levels (from 5°C to 35°C). Automatic summer/winter time change. Optimum start to achieve the right temperature at the right time. Built-in memory holds the user program indefinitely. The following instructions explain how to program and use the thermostat to provide the most home comfort at the least cost.
• Page 3: Setting-up the CM721 This section shows you how to setup and run the thermostat in 3 simple steps. Step 1: Installing the Batteries Please follow the instructions in this section only if the thermostat screen is blank. Lift up the front cover of the thermostat to reveal the battery cover and product controls. Insert the 2 x AA LR6 Alkaline Batteries supplied with the thermostat, ensuring the correct orientation. After a short pause, the thermostat will display information on the screen and is now ready for use. Step 2: Setting the Date and Time Press the DATE button to begin setting the date. Press the or buttons to set the current day of the month then press the green button to confirm. Press the or buttons to set the current month then press the green button to confirm. Press the or buttons to set the current year then press the green button to confirm. Use the or buttons to set the correct time then press the green button to confirm. Step 3: Running the Built-in Heating Program The thermostat is now ready for operation. Press the AUTO button and the built-in heating program will start running.
• Page 4: Efficient daily use Programming the CM721 The built-in heating program has 4 temperature level changes that can be set between 3.00am and 2.50am the following day. Each temperature level can be set between 5°C and 35°C, and adjusted in 0.5°C increments. The factory default program for heating includes specific time and temperature settings for four periods. To review or edit the heating program, use the PROGRAM buttons to navigate between the individual programming periods. To change the heating program, press either of the PROGRAM buttons to enter the programming mode. To adjust the period start time, use the buttons until the display stops flashing and the ‘OK?’ indicator is displayed. The thermostat has 4 periods that can be programmed, but you may not need all of these switch points for your heating requirements. To disable unwanted periods, navigate to the desired period and press and hold the button for at least 2 seconds. To enable periods again, follow the same procedure as above, navigating to the already disabled period and pressing and holding the button.
• Page 5: Operating modes include Automatic, Manual, and Off. In Auto mode, the thermostat follows a built-in temperature program for comfort and energy savings. Manual mode allows for a fixed temperature setting adjustable from 5°C to 35°C. Off mode maintains a minimum temperature of 5°C for frost protection. The thermostat displays the current room temperature in all operating modes. Pressing a button reveals the programmed target temperature for 5 seconds. Temperature override in Auto mode allows manual adjustment until the next programmed change. To adjust the time, use the green buttons and confirm changes with the designated button. The 'SERVICE' indicator reminds users of routine checks for the heating system. The CM721 continues to operate normally while the 'SERVICE' indicator is displayed.
• Page 6: Using the features Operating the CM721 Automatic summer/winter time change adjusts the clock for daylight saving time on the last Sunday of March and October each year. Optimum start ensures optimum temperature conditions are achieved at required times, adjusting the heating system's start time based on outside temperature. The thermostat monitors battery power, typically lasting about two years, with a low power indicator displayed when batteries need replacing. When changing batteries, program settings are stored, but time settings may need adjustment. The green LED on the BDR91 relay box indicates normal operation; when it is ON, the boiler is also ON. To set one temperature for the whole day, select manual operating mode and adjust the temperature between 5°C to 35°C in 0.5°C steps. The thermostat maintains the set temperature until another mode is selected or the temperature is adjusted. Use the push button to control the boiler only when RF communication is lost.
• Page 7: Troubleshooting the CM721 Blank display (power loss) - Check batteries are installed by removing the battery cover. Check batteries have been installed in the correct orientation. Replace the batteries. Display shows flashing symbol - The batteries in the thermostat are low on power. Replace the batteries. Display shows symbol - A fault has occurred in your heating system. Remove and re-insert the batteries. If the symbol does not clear after a few minutes, contact your installer. Display shows the word 'SERVICE' - Your installer has set a scheduled maintenance alert period on your CM721 as a recommendation that your heating system should receive a routine inspection. Call your installer to arrange a maintenance visit. BDR91 red LED is constantly on or flashing - RF communication lost due to the wrong location of the room unit. Hook the room unit back on the wall bracket where RF communication was reliable. Call installer. You can control the boiler manually when the RF communication is lost: Press the BDR91 push button to switch the boiler on and off. When the green LED is on, the boiler is on.
• Page 8: CM727 - User Guide The Honeywell CM727 is a programmable room thermostat designed to control your heating system efficiently. Ergonomic user interface featuring an ‘OK-button’. Large LCD (Liquid Crystal Display) Screen. 7-day heating program to match your lifestyle, whilst maximizing energy savings. 4 independent temperature levels per day (from 5°C to 35°C). Holiday button saves energy by letting you reduce the temperature for 1 to 99 days. Automatic Summer/Winter Time Change. Optimum Start to achieve the right temperature at the right time. Built-in Memory holds the user program indefinitely. The following instructions explain how to program and use the thermostat to provide the most home comfort at the least cost.
• Page 9: Setting up the CM727 involves three simple steps. Step 1 includes installing the batteries, which is necessary only if the thermostat screen is blank. To install the batteries, lift the front cover, remove the battery cover, and insert the 2 x AA LR6 Alkaline batteries. After inserting the batteries, the thermostat will display information on the screen. Step 2 is about setting the date and time, starting with pressing the DATE/DAY button. You will set the current day, month, and year by using the appropriate buttons and confirming with the green button. The date will be stored, and the Day Indicator will show the current day of the week. Step 3 involves running the built-in heating program by pressing the AUTO button. The built-in heating program is designed for normal comfort requirements, but customization options are available in the next section.
• Page 10: Efficient daily use Programming the CM727 The built-in heating program has 4 temperature level changes per day that can be set between 3.00am and 2.50am the following day. Each temperature level can be set between 5°C and 35°C, and adjusted in 0.5°C increments. The factory default program for heating is provided for Monday to Friday and for Saturday & Sunday. To review or edit the heating program, use the PROGRAM or buttons to navigate between the 4 individual programming periods for that day. To change the heating program, press either of the PROGRAM buttons to enter the programming mode. Adjust the period start time using the or buttons, and confirm the change with the green button. The temperature setting for each period will flash, allowing for adjustments. Repeat the adjustment steps until all 4 periods are set for Monday or press the AUTO button to run the program as set.
• Page 11: Programming the CM727 Press the COPY DAY button to copy Monday’s program into Tuesday. The display will go blank apart from the day indicator. To accept this day, press the DATE/DAY button until the flashing day indicator is under the required day, then accept it by pressing the green button. Once the target day is confirmed, it becomes the day that is copied if the COPY DAY button is pressed again. Press the DATE/DAY button to move the day indicator to Tuesday. The program for that day can then be adjusted. To exit the programming mode, select the desired operating mode by pressing the AUTO, MAN, or OFF buttons. Disabling / Enabling Time Periods The thermostat has 4 periods each day that can be programmed, but you may not need all of these switch points for your heating requirements. To disable unwanted periods, navigate to the desired period using the PROGRAM buttons, ensure the correct period is highlighted, and press and hold the button for at least 2 seconds. To enable periods again, follow the same procedure as above, navigating to the already disabled period and pressing and holding the button for at least 2 seconds. Operating the CM727 The thermostat can operate in three different modes: Automatic, Manual, or Off. AUTO mode sets the thermostat to follow the built-in temperature program. Operating in this mode is the best way to maintain temperature comfort while maximizing energy savings. MAN mode sets the thermostat to act as a simple thermostat with a fixed setpoint throughout the day. OFF mode sets the thermostat to control to a minimum temperature setting of 5°C, acting as a frost protection measure for your home.
• Page 12: Using the features Operating the CM727 During normal operation, the thermostat will display the current room temperature. To review the programmed target temperature, press the button. During normal operation in AUTO mode, the programmed temperature can be adjusted manually. This temperature override is cancelled at the next programmed temperature change. To adjust only the time during normal operation, press the green button to confirm any changes. The holiday function allows you to set a constant temperature for a specified number of days. This lets you save energy and related costs when you are away from home. To set the holiday function, ensure the thermostat is running in AUTO or MAN operating modes. The thermostat will control to the new temperature for the set number of days that your home is vacant. To cancel the holiday function, press the button a second time.
• Page 13: Programming the CM727 Using the Special Features Service indicator (optional) The 'SERVICE' indicator is displayed at set intervals as a reminder that your heating system requires a routine check. Automatic Summer/Winter Time Change The CM727 has a built-in Automatic Summer/Winter Time Change feature that will automatically adjust the clock forward or backward by one hour for ‘Daylight Saving Time’. Optimum Start Optimum Start is a program which ensures that the optimum temperature conditions are achieved at the required times. This is an energy efficiency feature that adjusts the start time of your heating system depending upon how cold it is.
• Page 14: FAQ’s BDR91 relay box controls layout How do I change the batteries on the thermostat when they run out? The relay box will normally be found mounted close to the boiler. The thermostat constantly monitors the battery power level, which typically lasts for about two years before needing replaced. When the power is running low, a flashing symbol will be displayed on the screen. To change the batteries, follow the steps in the above section (‘STEP 1: Installing the Batteries’ on page 3). Note: While changing the batteries your program settings will be stored but you may need to adjust the time settings to be correct. What does it mean when the BDR91 relay box green LED is ON? The green LED indicates normal operation of the radio frequency system. To operate as a simple thermostat with one temperature throughout the day, select the manual operating mode by pressing the MAN button. You should use the push button to control your boiler only when the RF communication is lost.
• Page 15: Troubleshooting the CM727 Blank display (power loss). Check batteries are installed by removing the battery cover. Check batteries have been installed in the correct orientation. Replace the batteries. Display shows flashing symbol. The batteries in the thermostat are low on power - replace the batteries. Display shows symbol. A fault has occurred in your heating system. Remove and re-insert the batteries. If the symbol does not clear after a few minutes, contact your installer. Display shows the word 'SERVICE'. Your installer has set a scheduled maintenance alert period on your CM727 as a recommendation that your heating system should receive a routine inspection. Call your installer to arrange a maintenance visit. BDR91 red LED is constantly on or flashing. RF communication lost due to the wrong location of the room unit - hook the room unit back on the wall bracket where RF communication was reliable. You can control the boiler manually when the RF communication is lost: press the BDR91 push button to switch the boiler on and off. When the green LED is on – the boiler is on.
• Page 16: What is a programmable room thermostat? 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. A room thermostat works by sensing the air temperature, switching on the heating when the air temperature falls below the thermostat setting, and switching it off once this set temperature has been reached. A programmable room thermostat lets you choose what times you want the heating to be on, and what temperature it should reach while it is on. Turning a programmable room thermostat to a higher setting will not make the room heat up any faster. The way to set and use your programmable room thermostat is to find the lowest temperature settings that you are comfortable with at the different times you have chosen. If your heating system is a boiler with radiators, there will usually be only one programmable room thermostat to control the whole house. The time on the programmer must be correct. Programmable room thermostats need a free flow of air to sense the temperature, so they must not be covered by curtains or blocked by furniture.