Honeywell thermostat CM727 7 Day Wireless Programmable Thermostat User Manual

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CM721 ..................................2-6
CM727 ................................7-11
USER GUIDE 
						

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Features
•	 Ergonomic	user	interface	featuring	an	‘OK-button’.
•	 Large	LCD	(Liquid	Crystal	Display)	Screen.
•	 4	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.
Description
The	Honeywell	 CM721	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	thermostat	to	provide	 the	most	 home	 comfort	at	the	least	cost.
Controls Layout
LCD	Screen
Battery	Low	Indicator
Time	Display
Burner	On	Indicator
Temperature	Display
1
2
3
611
12
13
7
8
9
10
4
5
Battery	Cover
Program	Buttons
Time	Change	Buttons
Set	Date	Button
Temperature	Change	Buttons
Temperature	Enquiry	Button
Operating	Mode	Buttons
Green	OK	Button
Battery	Compartment
1 . . 4
AUTO
AU T O
MANOFF
13
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7
8
9
6
11
12
10
PROGRAM
CM721
D A T E14
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CM721 - USER GUIDE 
						

							3
SETTING-UP THE CM721 ‘Getting Started’
This section shows you how to setup and run the thermostat in 3 simple steps:
STEP 1: Installing the Batteries
Note:  Please  follow  the  instructions  in  this  section  only  if  the  thermostat  screen  is  blank  (no 
symbols or digits are displayed). If the room temperature is already displayed move on to Step 2: 
Setting the Date and Time.
To install the Batteries:
a.
 Lift up the front cover of the thermostat to reveal the battery cover and product controls.
b. Remove the battery cover by pressing down and sliding out.
c.  Insert  the  2  x  AA  LR6  Alkaline  Batteries  supplied  with  the  thermostat,  ensuring  the  correct orientation (see ‘Controls Layout’ on page 2).
d.
 After a short pause the thermostat will display information on the screen and is now ready for use.
e.  Replace the battery cover by sliding it firmly back into the front of the thermostat.
STEP 2: Setting the Date and Time
To set the Date and Time:
a.	 Press	 the	DATE	button	 to	begin	 setting	 the	date.	When you set 
the  date  for  the  first  time  after  the  batteries  are  inserted,  the 
display will show:
  Press the  	or	 buttons to set the current day of the month (e.g.  d  01 = 1st  day  of  the  month)  then  press  the  green  
button to confirm.
b.
  Press  the  	or	  buttons  to  set  the  current  month  of  the year (e.g.  m 01 = January) then press the green  button to 
confirm.
c.
  Press the  	or	 buttons to set the current year (e.g. yr 06 
= 2006) then press the green  button to confirm.
  The date is now stored.
d. Use  the    or   buttons  to  set  the  correct  time  then  press the green  button to confirm. Each press of the buttons will 
change  the  time  by  one  minute  and  holding  them  down  will 
change the time slowly at first and get progressively quicker.
 Note:  If  this  mode  is  entered  accidentally  then  press  the 
AUTO, MAN or OFF buttons to exit. 
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.	Note: The built-in heating program has been designed to provide normal comfort 
requirements, but if you want to customise the settings please see the next section ‘ Programming 
the CM721’.
AM 
						

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Period 1 2 3  4 Time	 6:30	 8:00	 18:00	 22:30
Temperature	 21°C	 18°C	 21°C	 16°C
The Built-in Heating Program
The	 built-in	 heating	 program	 has	4	temperature	 level	changes	 that	can	be	set	 between	 3.00am	and	2.50am	 the	following	 day	-	allowing	 you	to	maintain	 the	evening	 temperature	 after	midnight.	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	as	follows.
Reviewing the Heating Program
To	review	 or	edit	 the	heating	 program	 use	the	PROGRAM 	or		buttons	 to	navigate	 between	the	4	individual	programming	periods.
Modifying the Heating Program
To change the heating program:
a.	 Press	either	of	the	PROGRAM 	or		buttons	 to	enter	the	programming	 mode.	The	time	 /	temperature	settings	 for	period	1	 	will	 be	flashing	 as	shown.	 The	active	period	 is	highlighted	 by	a	flashing	 square	around	the	numbers	at	the	bottom	of	the	screen.
b.	 To	adjust	the	period	start	time	use	the	 	or		buttons,	the	display	will	stop	flashing	and	the	‘OK?’	indicator	will	be	displayed.	Holding	the	button	down	will	change	the	time	quickly.
 Note:  If  you  are  pressing  the    or   buttons  and  the  display  flashes  the  next  period,  it means the next period will be pushed forward.
c.
	 Once	the	required	time	is	reached	press	the	green		button	to	confirm.
 Note:  If the original time setting did not require adjustment press the green  button to move 
to step ‘d’.
d.
	 The	 temperature	 setting	for	period	1	will	 now	 be	flashing.	 To	adjust	 this	press	 the	 	or	 buttons	and	confirm	the	setting	again	by	pressing	the	green		button.
e. The	 next	 time	and	temperature	 period	will	now	 be	active.	 Adjust	this	by	repeating	 steps	b  - d above	until	all	4	periods	are	set	or	press	the	AUTO button	to	run	the	program	as	set,	at	any	time.
Disabling / Enabling Time Periods
The	 thermostat	 has	4	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	 4	can	 be	removed	 from	(or	returned	to)	the	heating	program	profile.
To disable or enable time periods:
a.	 To	disable	 unwanted	 periods	go	to	the	 desired	 period	(2	to	4)		 using	 the	PROGRAM 	or	 buttons	 to	navigate,	 ensure	the	correct	 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.
b.	 To	enable	 periods	 again	follow	 the	same	 procedure	 as	above,	 navigating	 to	the	 already	 disabled	period.	To	enable	this	period	again	press	and	hold	the		button	for	at	least	2	seconds.
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‘Efficient Daily Use’ PROGRAMMING THE CM721 
						

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Choosing the Operating Mode
The	thermostat	 can	operate	 in	three	 different	 modes:	Automatic,	 Manual	or	Off.	 To	set	 the	 operating	mode	 press	either	 of	the	AUTO,	MAN or	OFF buttons.	 The	screen	 indicates	 which	mode	is	currently	active	by	displaying	AUTO,	MAN or	OFF.
•	
AUTO (automatic)	 mode	 sets	the	thermostat	 to	follow	 the	built-in	 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	 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	 sets	the	thermostat	 to	control	 to	a	minimum	 temperature	 setting	of	5°C	 (default)	 that	acts	as	a	frost	protection	measure	for	your	home.
During Normal Operation
•	Temperature Enquiry
	 In	AUTO,	MAN and	OFF operating	 modes	the	thermostat	 will	display	 the	current	 room	temperature.	 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	for	5	seconds	before	returning	to	the	current	room	temperature	value.	
•	Temperature Override
	 During	 normal	operation	 (AUTO	mode)	 the	programmed	 temperature	can	be	adjusted	 manually	by	pressing	 the	 	or		buttons	 or	the		button.	 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.
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.
Using the Special Features
•	SERVICE indicator
 Note:  This  option  only  works  if  activated  by  your 
installer.
 The  'SERVICE'  indicator  is  displayed  at  set  intervals as  a  reminder  that  your  heating  system  requires  a 
routine check. Please call your installer to arrange a 
maintenance visit.
 The  ‘SERVICE’  indicator  will  remain  on  the  display of  the  CM721  until  it  is  either  reset  or  disabled  by 
your  installer.  The  CM721  and  heating  system  will 
continue to operate as normal.
OPERATING THE CM721 ‘Using the Features’ 
						

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How do I change the batteries on the thermostat when they run out?
The	thermostat	 constantly	monitors	the	battery	power	 level,	which	 typically	 lasts	for	about	 2	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),	replacing	the	 used	 batteries	 with	new	 ones	 in	Step	 c.	Note:	 While	 changing	 the	batteries	 your	program	settings	 will	be	stored	 but	you	 may	 need	 to	adjust	the	time	settings	to	be	correct.
How do I set one temperature for the 
whole day?
To	 operate	 as	a	simple	 thermostat	 with	one	temperature	 throughout	the	day,	 select	 the	manual	 operating	 mode	by	pressing	 the	MAN	button.	 Adjust	the	temperature	 by	pressing	the	 	or		buttons	 -	this	 can	 be	set	anywhere	 from	5°C	to	35°C	 in	0.5°C	 steps.	The	thermostat	 will	continue	 to	maintain	 this	temperature	 until	another	 operating	 mode	is	selected	or	the	temperature	is	adjusted.
FAQ’s
•	Automatic Summer/Winter Time Change
 The CM721 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’. This is carried out 
on the last Sunday of March and October each year.
•	 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. For example, on cold days your heating 
system will be started earlier to ensure that your home is warm when you get up (at the target 
temperature) and on warmer days the heating system will be started later to save energy. So, 
if  the  Optimum  Start  Feature  is  used,  then  the  time  /  temperature  settings  which  are  entered 
into the thermostat should be set to when you want to be warm by and not when you want the 
heating system to start.
‘Using the Features’ OPERATING THE CM721
BDR91 Relay Box Controls Layout
The relay box will normally be found mounted 
close to the boiler.
What  does  it  mean  when  the  BDR91 
relay box green LED is ON?
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.
When  do  I  need  to  use  the  push 
button?
You should use the push button to control your 
boiler only when the RF communication is lost 
(see the Troubleshooting Guide). Push button 
and relay 
status LED’s 
						

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Symptom
Blank	Display	(Power	Loss).
Display	shows	flashing	 symbol.
Display	shows		symbol.
Display	shows	the	word	'SERVICE'
BDR91	red	LED	is	constantly	on	or	flashing
Remedy
Check	batteries	are	installed	by	removing	the	battery	cover.
Check	batteries	have	been	installed	in	the	correct	orientation.
Replace	the	batteries.
The	batteries	in	the	thermostat	are	low	on	power	-	Replace	the	batteries.
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.
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.
Note: The CM721 and heating system will continue to 
operate as normal.
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
NOTE: 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.
TROUBLESHOOTING THE CM721 
						

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CM727 - USER GUIDE
Features
•	 Ergonomic	user	interface	featuring	an	‘OK-button’.•	Large	LCD	(Liquid	Crystal	Display)	Screen.•	 7-day	heating	program	to	match	your	lifestyle,	whilst	maximising	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.
Description
The	Honeywell	 CM727	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	thermostat	to	provide	 the	most	 home	 comfort	at	the	least	cost.
Controls Layout
LCD	Screen
Battery	Low	Indicator
Time	Display
Burner	On	Indicator
Day	Indicator
Temperature	Display
1
2
3
4
5
6
Holiday	Function	Button
Program	Buttons
Copy	Day	Button
Set	Date/Day	Button
Time	Change	Buttons
Temperature	Change	Buttons
Temperature	Enquiry	Button
Operating	Mode	Buttons
Green	OK	Button
Battery	Compartment
Battery	Cover
7
8
9
10
11
12
13
14
15
16
17
COPYD A Y
DATE/
D A Y
1 . . 4
AUTO
12 34567
AU T OMANOFF
16
15
1712435
8
9
10
7
12
13
14
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6
PROGRAM
CM727 
						

							9
SETTING-UP THE CM727 ‘Getting Started’
This section shows you how to setup and run the thermostat in 3 simple steps:
STEP 1: Installing the Batteries
Note:  Please  follow  the  instructions  in  this  section  only  if  the  thermostat  screen  is  blank  (no 
symbols or digits are displayed). If the room temperature is already displayed move on to  Step 2: 
Setting the Date and Time.
To install the Batteries:
a.
  Lift up the front cover of the thermostat to reveal the battery cover and product controls.
b. Remove the battery cover by pressing down and sliding out.
c.  Insert  the  2  x  AA  LR6  Alkaline  Batteries  supplied  with  the  thermostat,  ensuring  the  correct orientation (see ‘Controls Layout’ on page 8).
d.
 After a short pause the thermostat will display information on the screen and is now ready for use.
e.  Replace the battery cover by sliding it firmly back into the front of the thermostat.
STEP 2: Setting the Date and Time
To set the Date and Time:
a.	 Press	 the	DATE/DAY	button	 to	begin	 setting	 the	date.	When 
you set the date for the first time after the batteries are inserted, 
the display will show:
  Press the  	or	 buttons to set the current day of the month (e.g.  d  01 = 1st  day  of  the  month)  then  press  the  green  
button to confirm.
b.
  Press  the  	or	 buttons  to  set  the  current  month  of  the 
year (e.g.  m 01 = January ) then press the green  button to 
confirm.
c.
 Press the  	 or	 buttons to set the current year (e.g. yr 06 
= 2006) then press the green  button to confirm.
  The date is now stored and the Day Indicator will be displayed under  the  current  day  of  the  week  (e.g.  1  =  Monday,  2  = 
Tuesday, etc.)
d.
  Use  the    or   buttons  to  set  the  correct  time  then  press the green  button to confirm. Each press of the buttons will 
change  the  time  by  one  minute  and  holding  them  down  will 
change the time slowly at first and get progressively quicker.
 Note:  If  this  mode  is  entered  accidentally  then  press  the 
AUTO, MAN or OFF buttons to exit. 
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.	Note: The built-in heating program has been designed to provide normal comfort 
requirements, but if you want to customise the settings please see the next section ‘ Programming 
the CM727’.
AM 
						

							10
‘Efficient Daily Use’ PROGRAMMING THE CM727
Modifying the Heating Program
To change the heating program:
a. Press	either	 of	the	PROGRAM 	or		buttons	 to	enter	the	programming	 mode.	The	time	 /	temperature	settings	 for	period	1	on	 Monday	 (Day	1)	will	 be	flashing	 as	shown.	 The	active	 period	 is	highlighted	 by	a	flashing	 square	around	 the	numbers	 at	the	 bottom	 of	the	screen	 and	the	selected	 day	is	shown	 with	the	day	indicator.b. To	adjust	 the	period	 start	time	use	the	 	or		buttons,	 the	‘OK?’	 indicator	 will	be	displayed	 to	confirm	the	change.	Holding	the	button	down	will	change	the	time	quickly. Note:  If  you  are  pressing  the    or   buttons  and  the  display  flashes  the  next  period,  it means the next period will be pushed forward.
c.	 Once	the	required	time	is	reached	press	the	green		button	to	confirm. Note:  If the original time setting did not require adjustment press the green  button to move 
to step ‘d’.
d.
	 The	 temperature	 setting	for	period	1	on	 Monday	 (Day	1)	will	 now	 be	flashing.	 To	adjust	 this	press	the	 	or		buttons	and	confirm	the	setting	again	by	pressing	the	green		button.e.	 The	next	time	and	temperature	 period	will	now	 be	active.	 Adjust	this	by	repeating	 steps	b	-	d	above	 until	all	4	periods	 are	set	for	Monday	 or	press	 the	AUTO button	 to	run	 the	program	 as	set,	at	any	time.
You now have a choice of how to set the program for the next day:
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1
The Built-in Heating Program
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	-	allowing	 you	to	maintain	 the	evening	 temperature	 after	midnight.	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	as	follows.
Reviewing the Heating Program
To	 review	 or	edit	 the	heating	 program	 use	the	PROGRAM 	or		buttons	 to	navigate	 between	the	4	individual	 programming	 periods	for	that	 day.	 Use	the	DATE/DAY button	 to	step	 through	 each	day	of	the	week,	so	the	complete	7	day	heating	program	can	be	reviewed	or	edited.
Period  1 2 3  4 Time	 6:30	 8:00	 18:00	 22:30
Temperature	 21°C	 18°C	 21°C	 16°C
Monday to Friday 
(Day 1 to 5)
Period  1 2 3  4 Time	 8:00	 10:00	 18:00	 23:00
Temperature	 21°C	 21°C	 21°C	 16°C
Saturday & Sunday 
(Day 6 & 7)