CM721..................................2-6
CM727................................7-11
USER GUIDE
Download from Www.Somanuals.com. All Manuals Search And Download.
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
year (e.g. m 01 = January) then press the green
or
buttons to set the current month of the
button to
confirm.
c. Press the
= 2006) then press the green
or
buttons to set the current year (e.g. yr 06
button to confirm.
The date is now stored.
d. Use the
the green
or
buttons to set the correct time then press
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.
AM
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’.
3
Download from Www.Somanuals.com. All Manuals Search And Download.
‘Efficient Daily Use’
PROGRAMMING THE CM721
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.
Period
1
2
3
4
Time
6:30
21°C
8:00
18°C
18:00
21°C
22:30
16°C
Temperature
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
enter the programming mode. The time / temperature
settings for period will be flashing as shown. The
active period is highlighted by flashing square
around the numbers at the bottom of the screen.
or
buttons to
1
a
1
2
3
4
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
to step ‘d’.
button to move
or
d. The temperature setting for period
1
will now be flashing. To adjust this press the
button.
buttons and confirm the setting again by pressing the green
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.
4
Download from Www.Somanuals.com. All Manuals Search And Download.
OPERATING THE CM721
‘Using the Features’
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
throughout the day. The setpoint can be adjusted from 5°C to 35°C by using the
a
simple thermostat with
a
fixed setpoint
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
flash for 5 seconds - during this time the
Note: This temperature override is cancelled at the next programmed temperature change.
or buttons or the button. The ‘target’ temperature will be displayed and
or buttons can be used to modify the set value.
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.
5
Download from Www.Somanuals.com. All Manuals Search And Download.
‘Using the Features’
OPERATING THE CM721
•
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.
FAQ’s
How do I change the batteries on the
thermostat when they run out?
BDR91 Relay Box Controls Layout
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
years before needing replaced. When the power
is running low flashing symbol will be
2
a
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.
Push button
and relay
status LED’s
What does it mean when the BDR91
relay box green LED is ON?
How do I set one temperature for the
whole day?
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.
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.
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).
6
Download from Www.Somanuals.com. All Manuals Search And Download.
TROUBLESHOOTING THE CM721
Symptom
Remedy
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.
Note: The CM721 and heating system will continue to
operate as normal.
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
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.
7
Download from Www.Somanuals.com. All Manuals Search And Download.
CM727 - USER GUIDE
Description
Features
The Honeywell CM727 is
programmable room thermostat
designed to control your heating
a
•
•
•
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.
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.
•
•
•
•
•
Built-in Memory holds the user program indefinitely.
Controls Layout
1
2
3
4
5
6
17
7
8
CM727
1
2
3
4
5
6
7
DATE/
DAY
16
AUTO
COPY
DAY
15
AUTO
MAN
OFF
14
9
PROGRAM
1. . 4
13
12
10
11
LCD Screen
Temperature Change Buttons
Temperature Enquiry Button
Operating Mode Buttons
Green OK Button
Holiday Function Button
Program Buttons
1
2
3
4
5
6
7
8
13
14
15
16
17
Battery Low Indicator
Time Display
Copy Day Button
9
Burner On Indicator
Day Indicator
Set Date/Day Button
Time Change Buttons
10
11
12
Battery Compartment
Battery Cover
Temperature Display
8
Download from Www.Somanuals.com. All Manuals Search And Download.
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
year (e.g. m 01 = January) then press the green
or
buttons to set the current month of the
button to
confirm.
c. Press the
= 2006) then press the green
or
buttons to set the current year (e.g. yr 06
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
the green
or
buttons to set the correct time then press
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.
AM
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’.
9
Download from Www.Somanuals.com. All Manuals Search And Download.
‘Efficient Daily Use’
PROGRAMMING THE CM727
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.
Monday to Friday
Period
1
2
3
4
(Day 1 to 5)
Time
6:30
21°C
8:00
18°C
18:00
21°C
22:30
16°C
Temperature
Saturday & Sunday
Period
1
2
3
4
(Day 6 & 7)
Time
8:00
21°C
10:00
21°C
18:00
21°C
23:00
16°C
Temperature
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.
Modifying the Heating Program
To change the heating program:
1
2
3
4
5
6
7
a. Press either of the PROGRAM
enter the programming mode. The time / temperature
settings for period on Monday (Day 1) will be
or
buttons to
1
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.
1
2
3
4
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
to step ‘d’.
button to move
d. The temperature setting for period
1
on Monday (Day 1) will now be flashing. To adjust this
button.
press the or buttons and confirm the setting again by pressing the green
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:
10
Download from Www.Somanuals.com. All Manuals Search And Download.
PROGRAMMING THE CM727
‘Efficient Daily Use’
f. i) Press the COPY DAY button to copy Monday’s program into Tuesday. The display will go blank
apart from the ‘non flashing’ day indicator, which indicates the day copied and the ‘flashing’ target
day to copy the program to. To accept this day press the green
target day press the DATE/DAY button until the ‘flashing’ day indicator is under the required
day, then accept it by pressing the green button. Note: Once the target day is confirmed it
button. To select a different
becomes the day that is copied if the COPY DAY button is pressed again.
OR
ii) Press the DATE/DAY button to move the day indicator to Tuesday (Day 2). The program for that
day can then be adjusted by following steps b to e. Programs for the remaining days can be set in
the same way, using the DATE/DAY button to move to the next day.
To exit the programming mode select the desired operating mode by pressing the AUTO, MAN or
OFF buttons. Note: To run the adjusted program select the AUTO mode.
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. 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.
OPERATING THE CM727
‘Using the Features’
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.
11
Download from Www.Somanuals.com. All Manuals Search And Download.
‘Using the Features’
OPERATING THE CM727
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
flash for 5 seconds - during this time the
Note: This temperature override is cancelled at the next programmed temperature change.
or buttons or the button. The ‘target’ temperature will be displayed and
or buttons can be used to modify the set value.
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 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.
To set the Holiday function:
a. Ensure the thermostat is running in AUTO or MAN operating modes.
b. Press the holiday
along with the holiday indicator
button to display the holiday days counter and temperature setting,
.
c. Press the or time buttons to set the holiday time (1 - 99 days) and press the green
button to confirm.
d. Press the
or
buttons to set the holiday temperature (5°C - 35°C) and press the green
button to confirm.
The thermostat will now control to the new temperature for the set number of days that your home is
vacant. At midnight the holiday counter will be reduced by one until the selected number of days have
passed. The thermostat will then return to normal operation as set by the MAN or AUTO mode. To
cancel the HOLIDAY function or to exit the function at any time press the
button a second time.
12
Download from Www.Somanuals.com. All Manuals Search And Download.
PROGRAMMING THE CM727
Using the Special Features
‘Using the Features’
•
SERVICE indicator (optional)
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 CM727 until it is either reset or disabled by
your installer. The CM727 and heating system will
continue to operate as normal.
•
•
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’. 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.
13
Download from Www.Somanuals.com. All Manuals Search And Download.
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
years before needing replaced. When the power
is running low flashing symbol will be
2
a
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.
Push button
and relay
status LED’s
What does it mean when the BDR91
relay box green LED is ON?
How do I set one temperature for the
whole day?
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.
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.
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).
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.
Honeywell reserves the right to modify this document, product and functionality without notice.
This document replaces any previously issued instructions and is only applicable to the
product(s) described.
This product has been designed for applications as described within this document. For use
outside of the scope as described herein, refer to Honeywell for guidance. Honeywell cannot be
held responsible for misapplication of the product(s) described within this document.
Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell
Technologies Sàrl, ACS-ECC EMEA, Z.A. La Pièce 16, 1180 Rolle, Switzerland by its Authorised
Representative Honeywell Inc.
14
Download from Www.Somanuals.com. All Manuals Search And Download.
TROUBLESHOOTING THE CM727
Symptom
Remedy
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.
Note: The CM727 and heating system will continue to
operate as normal.
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
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.
15
Download from Www.Somanuals.com. All Manuals Search And Download.
WHAT IS A PROGRAMMABLE ROOM THERMOSTAT?
...an explanation for householders
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.
So, 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. It will allow you to select different temperatures in your
home at different times of the day (and days of the week) to meet your particular needs.
Turning a programmable room thermostat to a higher setting will not make the room heat up any faster.
How quickly the room heats up depends on the design of the heating system, for example, the size
of boiler and radiators.
Neither does the setting affect how quickly the room cools down. Turning a programmable room thermostat
to a lower setting will result in the room being controlled at a lower temperature, and saves energy.
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, and then leave it alone to do its job.
The best way to do this is to set low temperatures first, say 18°C, and then turn them up by one degree
each day until you are comfortable with the temperatures. You won’t have to adjust the thermostat
further. 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. If you do have TRVs, you can
choose a slightly higher setting to make sure that even the coldest room is comfortable, then prevent
any overheating in other rooms by adjusting the TRVs.
The time on the programmer must be correct. Some types have to be adjusted in spring and autumn
at the changes between Greenwich Mean Time and British Summer Time.
You may be able to temporarily adjust the heating programme, for example, ‘Override’, ‘Advance’ or
‘Boost’. These are explained in the manufacturer’s instructions.
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. Nearby electric fires, televisions, wall or table lamps may
prevent the thermostat from working properly.
Honeywell Control Systems Ltd.
Arlington Business Park,
Bracknell
Berkshire
RG12 1EB
Technical Help Desk: 08457 678999
50039991-003 A
© 2009 Honeywell International Inc.
Download from Www.Somanuals.com. All Manuals Search And Download.
|