Honeywell CM61NG Thermostat User Manual

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What if something happens to my heating system? How can I check that the CM61NG is working?  
See the troubleshooting guide below. If you need assistance after this call your installer.  
RF Programmable Thermostat  
CM61NG Trouble-Shooting Guide  
Symptom  
Possible Cause  
Remedy  
Blank display  
No batteries  
Check that the batteries are in the battery compartment and that the  
paper tab has been pulled out  
Wrong battery orientation  
Exhausted batteries  
Check that the batteries have been installed in the correct orientation  
Replace batteries  
Display shows flashing ‘battery’  
symbol  
Improper battery compartment insertion Remove battery compartment and re-insert  
Batteries need replacing  
Change batteries as described previously  
Display shows ‘flame’ symbol but  
heating does not switch on  
The heating is not required at this  
moment  
The heat demand is sent to the relay box as a value between 0-100%.  
The relay box will adjust the boiler on time to meet this requirement.  
That is why the heating will be off sometimes even if the ‘flame’  
symbol is displayed. To check if RF system is communicating properly  
press the TEMPerature UP button to increase the set temperature a  
few degrees above the current temperature. The heating should come  
on after a few seconds  
What is an RF ProgrammableThermostat?  
A Honeywell Radio Frequency (RF) programmable thermostat is a  
thermostat that controls your heating system so that you can have  
comfortable temperatures when you are at home and energy savings  
when you are out. With RF communication there is no need to provide  
a wired connection between thermostat and boiler. The CM61NG  
can therefore be installed without disrupting your room decor. These  
instructions explain how to program and operate your CM61NG to  
get the most comfort at the least cost.  
Display works but heating does not  
switch on (HC60NG LEDs are off or  
green one is on)  
Boiler switched off  
Switch the boiler on  
Wrong electrical connection  
Call electrical installer to check the boiler and relay box power supply  
as well as the connection between the boiler and the relay box  
HC60NG red LED is constantly on or RF communication lost due to the  
Hook the room unit back on the wall bracket or replace the room unit  
on the table stand to the position where RF communication was  
reliable.  
flashing  
wrong location of the room unit  
What will the CM61NG ProgrammableThermo-  
stat do for me?  
RF communication fault  
Call installer  
Wireless connection to the boiler allows you to mount the  
CM61NG in your room without disrupting the decor  
NOTE: You can control the boiler manually when the RF communica-  
tion is lost:  
Press the HC60NG push button to switch the boiler on and off. When  
the green LED is on – the boiler is on.  
Armchair programming lets you set up your CM61NG while  
resting comfortably in your armchair  
Heating switches on or off too slowly  
or too quickly  
CM61NG not set correctly for your  
system  
Call installer  
Call installer  
Optimum Start means that the CM61NG will switch on your  
heating system so that your desired comfort temperature is  
reached at the programmed time, thus avoiding unnecessary boiler  
firing  
Temperature swings between too hot  
and too cold  
CM61NG not set correctly for your  
system  
Attractive slim styling compatible with any room decor  
Display show ‘spanner’ symbol  
Fault in the CM61NG  
Remove the battery compartment and re-insert it. If the ‘spanner’  
symbol does not clear itself in a few minutes call the installer  
6
daily independent temperature levels let you set any 6  
temperatures from 5 to 30°C to match your daily lifestyle  
Holiday button saves energy by letting you reduce the tempera-  
ture for 1 to 99 days while you are on holiday, returning to normal  
operation on the day you return  
Memory holds the user program indefinitely so that it is never lost  
even if you take the batteries out  
What is Optimum Start?  
Warning.  
Instead of switching on the heating at the set time every day, the  
CM61NG will delay the start time to the latest possible moment, so  
that unnecessary heating is avoided. All you have to do is set the time  
when you want comfort temperature and the CM61NG will then  
decide when to turn the heating on, thereby ensuring your comfort.  
This product and its associated documentation and packaging are protected by various intellectual property rights belonging to Honeywell Inc and its  
subsidiaries and existing under the laws of the UK and other countries. These intellectual and property rights may include patent applications,  
registered designs, unregistered designs, registered trade marks, unregistered trade marks and copyrights and also include the following UK registra-  
tion rights:  
UK patent application number 98062207.8  
UK registered design numbers 2073334, 2073340 and 2073343.  
honeywell  
Honeywell Control Systems Ltd.  
Arlington Business Park  
www.honeywell.com/uk/homes.htm  
Bracknell, Berkshire RG12 1EB  
Tel: 01344 656000  
42010475-003 R1  
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How do I install the batteries?  
How do I set my own daily temperature pro-  
gram?  
I am going on holiday for a few days. How do I  
save energy but ensure that the house is warm  
when I return?  
HC60 Relay Box Controls Layout  
1
.
Lift up the front flap to reveal the battery compartment. Open the  
battery compartment by inserting a coin underneath the bottom  
right edge of the flap and lift out.  
The relay box will normally be found mounted close to the boiler.  
1
.
Press PROG 1. The first temperature change time and tempera-  
ture level will flash to indicate they can be changed. (the two small  
arrows are displayed only when the programmed temperature level  
is shown).  
1
. Make sure the CM61NG is in AUTO or MAN mode.  
2
.
Pull the paper tab out to activate the 2 AA LR6 Alkaline Batteries  
included and push the battery compartment firmly back into the  
front of the unit. After a pause the unit will now display information.  
2. Press  
temperature.  
3. Press  
Press TEMP  
0°C).  
(HOLIDAY) to display the holiday days counter and  
Push button and relay  
status LEDs  
+ or - to set the holiday time (1 - 99 days).  
4
.
or  
to set the holiday temperature (5°C -  
3
1
2
3
4
5
6
The unit will control to the new temperature for the set number of days  
holiday. At midnight the holiday counter will be reduced by one until the  
selected number of days have passed. The unit will then return to  
normal control as set by the MAN or AUTO position.  
What does it mean when the HC60NG relay box  
green LED is ON?  
2
.
Press  
+ or - to adjust the first temperature change time.  
Holding the button down will change the time quickly. The change  
time can be set in 10 minute steps from 03:00 in the morning. The  
change time can be adjusted up to 02:50 on the next morning, so  
you can maintain the evening temperature after midnight.  
To cancel the HOLIDAY setting, press the  
button a second time.  
The green LED indicates normal operation of the radio frequency  
system. When the green LED is ON the boiler is also ON. When the  
LED is OFF the boiler is OFF.  
(
Note: If you attempt to move a change time past the next change  
How can I switch the Heating on and off  
manually?  
time, both times will be moved).  
When do I need to use the push button?  
3
4
5
.
.
.
Press TEMP  
or  
to adjust the first temperature level.  
To switch the boiler ON or OFF:  
1. Press the MAN button.  
You should use the push button to control your boiler only when the RF  
communication is lost (see the CM61NG Trouble-Shooting Guide).  
Holding the button down will change the temperature quickly. The  
temperature can be set in 0.5°C steps from 5°C to 30°C.  
2. Press TEMP  
or  
until the boiler switches ON or OFF.  
CM61NG Controls/Display Layout  
The diagram below details the key button functions and display  
information.  
Press PROG 2 to display the second temperature change time and  
What other accessories can I buy for the CM61NG?  
temperature level. Set these by pressing  
or  
+ or - and TEMP  
How can I switch the CM61NG off?  
.
Automatic Time Setting (ATS) Add-OnModule *  
(Part No. Q6667B1015)  
Press the OFF button. The unit will now control at 5°C.  
Battery Low  
Indicator  
Time Display Heat Demand Temperature  
The remaining temperature changes can be displayed by pressing  
PROG buttons 3, 4, 5 and 6 and adjusted by using + or - and  
TEMP or . (If you dont want to use all the temperature  
change times 2, 3, 4, 5 or 6 refer to the section What if I dont  
want to use all 6 temperature change times?).  
Indicator  
Display  
Information  
Enquiry  
Button  
How do I know when the batteries need to be  
changed and how do I do this?  
Time  
Change  
Buttons  
Your CM61NG has built-in electronics that constantly monitor the  
battery power level. With no accessory fitted the batteries should last  
about 2 years. When the batteries need replacing, a flashing  
symbol will be displayed.  
Temperature  
Change  
Buttons  
6
.
Press AUTO when you have completed your programming, The  
CM61NG will now control the room temperature to match your  
program.  
NG  
=
=
increase  
decrease  
Automatic  
Function  
Button  
To change the batteries:  
Battery  
Compartment  
What if I dont want to use all 6 temperature  
change times?  
1
.
Lift up the front flap to reveal the battery compartment. Open the  
battery compartment by inserting a coin underneath the bottom  
right edge of the flap and lift out.  
The ATS module picks up a daily time signal from a transmitter in  
Central Europe and corrects the time on the CM61NG display. So:  
Manual Function  
Button  
Program  
Buttons  
Off Button  
Holiday Button  
The built-in program uses 6 temperature change times as indicated by  
the numbers 1, 2, 3, 4, 5 and 6 on the display. Unwanted change times  
can be deleted by holding the appropriate PROG buttons (2, 3, 4, 5 or  
2. Replace the used batteries with 2 new AA LR6 Alkaline Batteries  
Duracell are recommended) and push the battery compartment  
You never need to set or adjust the time  
There is no need to adjust the unit by -/+ 1 hour in summer / winter  
since the unit does this automatically  
(
firmly back into the front of the unit.  
6) down for a few seconds. The change time will be removed and the  
Your CM61NG is the most accurate clock in your home so you  
can use this information to set-up all your other clocks.  
display will show dashes instead of a time / temperature display.  
How do I set the time?  
RESPECT YOUR ENVIRONMENT!  
Take care to dispose of used batteries carefully.  
The time can be set with the CM61NG in the AUTO, MAN or OFF  
operating modes. Press + or - until the correct time is displayed.  
Each button press will change the time by one minute. Holding the  
button down for a few seconds will change the time slowly at first, then  
quickly. Make sure AM or PM is correct.  
Deleted temperature change times can be brought back by again  
pressing the appropriate program button (2, 3, 4, 5 or 6) for a few  
seconds.  
*
Not available in all Geographic Regions depending on transmitter  
range and home location.  
The CM61NG has a permanent memory to keep your program  
settings. While you change the batteries, you should never need to  
reprogram. However, if you take more than one minute to change  
Table stand for the room unit (Part No. F42010248-002)  
Can I change the programmed temperature for a  
short time?  
them, you may need to correct the time by pressing  
+ or -.  
If you do not want to mount the room unit on the wall you can use  
optional table stand, ask you installer for details  
When the CM61NG is in AUTO position (display will show AUTO)  
Can I use my CM61NG to control my air-condi-  
tioning system?  
PM  
the temperature can be adjusted temporarily by pressing TEMP  
The temperature will return to the program at the next temperature  
change time.  
or  
.
Yes. Please refer to your installer for more information.  
How do I get started with the built-in tempera-  
ture program?  
How do I check the programmed temperature?  
How do I remove the CM61NG from the wall  
bracket?  
In normal operation the temperature displayed is the actual room  
Press the AUTO button.  
The CM61NG will now control your heating using the built-in  
temperature program:-  
temperature. To check the programmed temperature press and the  
display will show the programmed temperature with the two small  
arrows.  
*
Note: The room unit must be located in a location where reliable  
communication was proven. Advise your installer where you would like  
to position the room unit and they will check if the RF communication  
is reliable in the selected location(s)  
Daily  
Program  
Time  
1
2
3
4
5
6
How do I set one temperature for the whole  
day?  
06:30 08:00 12:00  
21°C 18°C 21°C  
2:00  
18°C  
6:00  
21°C  
10:30  
16°C  
Temperature  
To operate as a simple thermostat with one temperature throughout the  
day, press MAN. Adjust the manual temperature by pressing TEMP  
After programming is finished always replace the CM61NG back on  
the wall bracket.  
or  
. The manual temperature can be set anywhere from 5°C to 30°C  
in 0.5°C steps.  

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