Honeywell thermostat ST9400C 7 Day 2 Channel Programmer User Manual

							
ST9400C – User Guide
7 day Programmer
2 channel, 3 on/off per day
Honeywell Control Systems Ltd.Arlington Business Park,BracknellBerkshireRG12 1EB
Technical Help Desk: 08457 678999www.honeywelluk.com50022737-005 A© 2007 Honeywell International Inc.
Features
Easy  to  use  slider  and  buttons  combined  with  ‘LoT’™  Technology  and  an ‘OK’ button, allows you to confirm changes and stay in control.
LoT™ Technology provides you with informative ‘on-screen’ feedback and operational assistance as and when required.
Extra  Large  LCD  (Liquid  Crystal  Display)  with  Backlight  provides  added  user friendliness and clearer viewing – even in the dark.
Independent  7-day  Heating  &  Hot  Water  Programmes  let  you  choose  settings built into ST9400C for each day of the week to match your lifestyle, while maximising energy savings, or alter them to your personal settings.
Automatic Summer/Winter Time Change will adjust the clock forward and backward automatically  when  the  clocks  change,  saving  you  having  to  change  your  ST9400C every time.
Built-in Memory holds your programme indefinitely - even if the mains power fails.
Energy Efficiency and the Environment
Home energy use is responsible for more than ¼ of the total UK carbon emissions which  contribute  to  climate  change.  Heating  and  hot  water  systems  based  on boilers  account  for   of  this  figure,  so  it  is  important  to  understand  how  your controls can help to maximize energy efficiency while maintaining your comf\
ort.
Your  Programmer  should  be  used  in  conjunction  with  appropriate  temperature controls.  In  order  to  save  energy  the  following  general  points  should  be observed:
1. Ensure  your  system  contains  a  room  thermostat  and  a  hot  water  thermostat, and  that  both  are  set  to  appropriate  temperature  levels:  typically  20°C  for  the room temperature and between 55 - 60°C for the hot water temperature.
2. Programme your heating and hot water to be off when you are not in the house. If you are concerned about possible frost damage to any exposed pipe work, it is advisable to fit a frost protection system – your installer can advise you about this.
3. Think  about  how  you  use  your  domestic  hot  water  –  if  you  have  a  storage system, it is not necessary to have this switched on all the time, even when you are in the house.
4. Consider  the  heat  up  times  required  for  your  central  heating.  Every  home responds  differently  when  the  heating  is  switched  on.  Adjust  the  start  time  so that you are not cold when you get up in the morning. A shorter heat up time is required for other heating periods.
5. In  the  evening,  when  the  house  is  up  to  temperature,  it  is  often  possible  to switch off the heating up to an hour before you go to bed, without any noticeable reduction in comfort.
PLEASE RESPECT YOUR ENVIRONMENT!Take care to dispose of this product and any packaging or literature in an appropriate way
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  Environment  and  Combustion  Controls  Division  of  Honeywell Technologies Sarl, Ecublens, Route du Bois 37, Switzerland by its Authorised Representative Honeywell Inc.
This document is to be left with the userand forms part of a Home Information Pack
WHAT IS A PROGRAMMER?
...an Explanation for Householders (as recommended by the Energy Savings Trust)
Programmers allow you to set ‘On’ and ‘Off’ time periods. Some models switch the central heating and  domestic  hot  water  on  and  off  at  the  same  time,  while  others  allow  the  domestic  hot  water and  heating  to  come  on  and  go  off  at  different  times.  Set  the  ‘On’  and  ‘Off’  time  periods  to  suit your own lifestyle. On some programmers you must also set whether you want the heating and hot water to run continuously, run under the chosen ‘On’ and ‘Off’ heating periods, or be permanently off. 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.  The  heating  will not work if the room thermostat has switched the heating off. And, if  you  have  a  hot-water  cylinder,  the  water  heating  will  not  work  if the cylinder thermostat detects that the hot water has reached the correct temperature. 
						

							
HOT WATERHEATING
EXTRA HOUR
OVERRIDE
EXTRA HOUR
OVERRIDE
NEXTDAY
COPYDAY
HOLIDAYOK
NEXT
DAY/TIMEHOT WATERHEATINGRUNST9400C
Contents
WHAT IS A PROGRAMMER? General Description ........................................................................\
................3  The way to use a Programmer ........................................................................\
3
GETTING STARTED WITH YOUR ST9400C  Step 1: Setting the Date & Time .....................................................................4  Step 2: Running a Built-in Programme ...........................................................5
PROGRAMMING YOUR ST9400C  The Built-in Programmes ........................................................................\
........6  Your Personal Programme ........................................................................\
......6  Reviewing the Programme Times ...................................................................7  Modifying the Hot Water Programme .............................................................7    Copying one day’s Programme to another day .....................................8    Programming a Different Day.................................................................8   Exiting HOT WATER Programming Mode ..............................................9  Modifying the Heating Programme .................................................................9    Exiting HEATING Programming Mode ...................................................9  Disabling/Enabling Time Periods ...................................................................9
OPERATING YOUR ST9400C  Choosing the Operating Mode .....................................................................10  Override the Operation Without Changing the Programmes........................10 The Extra Hour Function ........................................................................\
.......11  The Holiday Function ........................................................................\
............11
FINE TUNING YOUR ST9400C  Changing From AM/PM Time display to the 24-hour Clock .........................12  Changing the Installer Parameters ...............................................................12
FAQ & TROUBLESHOOTING  How do I set the time only, if the ST9400C clock is not correct? ..................14  What do I do when the clocks go back in October and forward in March? .14  What should I do if I get ‘lost’ while programming the ST9400C? ................14  What happens if there is a power failure? ....................................................14  Troubleshooting Guide ........................................................................\
.........15
MINI-PROGRAMMER OPERATING INSTRUCTIONS(Installer to tick if configured in this way)  What is a Mini-Programmer?........................................................................\
.16 Modifying the Heating & Hot Water Programme ..........................................16  Exiting HEATING & HOT WATER Programming Mode .................................16  Disabling/Enabling Time Periods .................................................................17  Choosing the Operating Mode .....................................................................17  Override and Extra Hour Functions ..............................................................17  Other Functions ........................................................................\
....................17
CONFIGURATION & SERVICE DATA  Configuration Data (to be completed by Installer) .......................................18  Boiler & System Service Log ........................................................................\
19
ST9400C Controls Layout
Hot Water Operating Mode Indicator
Time Display
LoT™ Technology Display
Programme Time Markers
Day of Week Indicator
Heating Operating Mode Indicator
Heating Extra Hour Button
Heating Indicator Lamp
Heating Override Button
Slider
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
19
18
Heating Operating Mode Button
OK/Next Button
Clock – and + Buttons
Hot Water Operating Mode Button
Holiday Button
Copy Day Button
Next Day Button
Hot Water Override Button
Hot Water Indicator Lamp
Hot Water Extra Hour Button20
19
18
17
16
15
20
123546
8
9
7
1312
10
1114
19
CONFIGURATION & SERVICE DATA
Boiler & System Service Log
The space below can be used to provide a record of boiler & system services and the names and contact numbers of the Installer and Service Personnel.
This information is important for a Home Information Pack.
Service/Installation DateInstallation/Service EngineerTelephone Number / Contact Details
Keep this document in a Home Information Pack 
						

							

WHAT IS A PROGRAMMER?
General Description
Your  Honeywell  ST9400C  provides  timing  control  for  both  your  central  heating  and hot water systems, letting you set ON and OFF periods to suit your own lifestyle. 
The ST9400C does not directly control the temperature but works together with other temperature controls, such as room thermostats and cylinder thermostats, to control your heating and hot water system in your home.
With 7-day programming and up to 3 on/off periods per day, every day can be set differently, and heating and hot water can be set at different times from each other.
The  following  instructions  explain  how  to  programme  and  use  the  ST9400C  to provide the most home comfort at the least cost.
The way to use a Programmer
Think about the time periods when you are typically in the house and when you are not,  and  also  the  times  when  you  use  a  lot  of  hot  water.  These  are  the  times  you should  use  as  the  basis  for  the  programmes.  It  will  be  necessary  to  allow  some heat-up time for the heating system after periods when it has been off – this would typically be 1 - 1½ hours, depending on your house and your preferences.
Other features are commonly available on the Programmer to enhance comfort and convenience, for example, OVERRIDE, EXTRA HOUR, and MODE buttons.
A  typical  use  of  the OVERRIDE  feature  is  when  you  return  home  unexpectedly  for the rest of the day and the heating is off. Just press the OVERRIDE button and the heating  will  come  on  until  the  next  programme  time,  at  which  point  it  will  follow  the normal  programme.  The  advantage  here  is  that  you  do  not  have  to  remember  to switch off because the normal time programme does this for you.
A typical use of the EXTRA HOUR button would be if you returned to the house for a  short  period  when  the  heating  and  hot  water  were  off.  Pressing  the  appropriate EXTRA HOUR button gives you 1, 2, or 3 hours of heating, exactly when you need it. Another typical use is when the heating is already on and you want it to stay on a little longer - just press EXTRA HOUR and, for that day only, an hour will be added to the end of the time at which heating normally goes off.
The MODE  buttons  allow  you  to  select  how  you  want  to  operate  heating  and  hot water independently.  The  most  obvious  use  is  to  switch  heating OFF  during  the summer  months,  but  you  may  also  use  this  feature  if  you  take  a  mid-week  day  off work, you can then set the MODE to ONCE to keep the system ON during the day from the first programmed ON time till the last programmed OFF time. 
						

							


Your ST900C should have been set up to work correctly when it was installed. However, the following will show you how you can modify your settings to meet your particular lifestyle.
To  assist  you  with  programming  and  everyday  use  your  ST9400C  will  display  text messages at every stage to help you get the most out of your central heating and hot water system. The ST9400C uses LoT™ Technology to constantly update the display to give you feedback about what is required.
Step 1: Setting the Date & Time
Your  ST9400C  had  the  date  and  time  set  at  the  factory,  and  these  are  normally maintained by a backup battery in the event of power failures. If you wish to change the date or time, or if the LoT™ Display shows the message ‘SET DATE + TIME’ just follow the instructions below. Otherwise, go to Step 2.
a. Move the slider to the DAY/TIME position. The message ‘SET DATE + TIME’ will show briefly on the screen, followed by ‘SET THE DAY’, and the day of the month will now be flashing to indicate it can be changed.
b.  To change the day of the month, press the   or  buttons until the correct day is shown.  Each press of the button will change the date by one day. As soon as a change has been made, the message ‘IS DAY OK?’ will be displayed. Once the  correct  day  is  reached,  press  the  green   button  to  confirm,  and  move  to the  next  step.  If  you  do  not  need  to  make  a  change,  just  press  the   button immediately and this will move you to the next step.
c.  The month digits will now be flashing and ‘SET THE MONTH’ will be displayed. To change the month, press the   or  buttons until the correct month is shown. The  message  ‘IS  MONTH  OK?’  will  be  displayed.  Press  the  green   button  to confirm the month is correct, and move to the next step.
GETTING STARTED WITH YOUR ST900C
HOT WATERHEATING
DAY/TIME
HOT WATER
HEATING
RUN 
						

							


GETTING STARTED WITH YOUR ST900C
d. The  year  digits  will  now  be  flashing  and  ‘SET  THE  YEAR’  will  be  displayed.  To change the year, press the   or  buttons until the correct year is shown. The message ‘IS YEAR OK?’ will be displayed. Press the green  button to confirm the year is correct. If you have made a change, and the date is a valid date, the message ‘DATE SAVED’ will show, and you can move to the next step. If the date you  set  was  not  valid,  for  example  31  September,  the  message  ‘INVALID’  will show and you will be returned to the start of the date setting operation.
e.  The time will now be flashing and the message ‘SET THE TIME’ will be displayed. To change the time, press the   or  buttons until the correct time is shown. Each press of the button will change the time by one minute. Holding the button down  for  more  than  a  few  seconds  will  change  the  time  slowly  at  first,  then quickly. The message ‘IS TIME OK?’ will be displayed. Press the green  button to confirm the time is correct.  If you have made a change, the message ‘TIME SAVED’ will show, followed quickly by ‘DATE + TIME COMPLETE’.
f.  Move the slider to the RUN position, to complete setting the date and time.
Note:  if  the  slider  is  moved  at  any  time  before  the  date  and  time  have  been  set correctly,  the  message  ‘DATE  UNCHANGED’  will  be  displayed  briefly,  and  your changes will not be saved.
Step 2: Running a Built-in Programme
With  the  date  and  time  correct,  your  ST9400C  Programmer  will  now  be  operating to  the  built-in  programmes.  These  have  been  designed  to  provide  heating  and  hot water at typical times throughout the day, but if you want to customise the settings, please see the next section ‘ PROGRAMMING YOUR ST900C’ (page 6). 
						

							


PROGRAMMING YOUR ST900C
The Built-in Programmes
The  built-in  programmes  give  you  a  starting  point  that  you  can  personalise  to  your  own requirements. Your Installer should have selected one and ticked the box alongside it. If there is  no  tick,  the  product  normally  leaves  the  factory  with  Profile  A  installed,  but  it  is  a  simple matter to select one of the other profiles (see Changing the Installer Parameters, page 12).
 Built-in Programme (Profile A)ON 1OFF 1ON 2OFF 2ON OFF Monday to FridayHeating6:30am8:30am12:00pm1:00pm4:30pm10:30pmHot Water6:30am8:30am12:00pm1:00pm4:30pm10:30pmSaturday & SundayHeating6:30am9:30am12:00pm1:00pm4:30pm11:00pmHot Water6:30am9:30am12:00pm1:00pm4:30pm11:00pm
 Built-in Programme (Profile b)ON 1OFF 1ON 2OFF 2 ON OFF Monday to FridayHeating6:30am9:30am12:00pm1:00pm4:30pm11:00pmHot Water6:30am9:30am12:00pm1:00pm4:30pm11:00pmSaturday & SundayHeating6:30am9:30am12:00pm1:00pm4:30pm11:00pmHot Water6:30am9:30am12:00pm1:00pm4:30pm11:00pm
 Built-in Programme (Profile C)ON 1OFF 1ON 2OFF 2 ON OFF Monday to FridayHeating6:30am7:30am12:00pm12:00pm5:00pm10:00pmHot Water6:30am7:30am12:00pm12:00pm5:00pm10:00pmSaturday & SundayHeating8:30am9:30am12:00pm1:00pm5:30pm10:30pmHot Water8:30am9:30am12:00pm1:00pm5:30pm10:30pm
ON 1OFF 1ON 2OFF 2 ON OFF MondayHeatingHot WaterTuesdayHeatingHot WaterWednesdayHeatingHot WaterThursdayHeatingHot WaterFridayHeatingHot WaterSaturdayHeatingHot WaterSundayHeatingHot Water
Your Personal Programme
The table below has been left blank for you to record your own personal programme. 
						

							


PROGRAMMING YOUR ST900C
Reviewing the Programme Times
To review your hot water programme, move the slider to the HOT WATER position. 
To review your heating programme, move the slider to the HEATING position.
To  review  the  programme  times,  press  the   button  repeatedly.  The  appropriate ON  and OFF  markers  will  be  displayed  to  show  you  which  time  is  being  reviewed. Any  of  these  times  can  be  adjusted  by  using  the    or   buttons,  and  then confirmed  using  the   button.  Remember  to  return  the  slider  to  the RUN  position after reviewing is complete.
Modifying the Hot Water Programme
The hot water programme has three pairs of ON/OFF switching times per day. Each time  can  be  set  between  3.00  am  and  2.50  am  (on  the  next  day)  to  allow  you  to programme the hot water to stay on past midnight, if required. 
a. Move the slider to the HOT WATER position. ‘SET HOT WATER’ will show briefly to verify this action.
b.  ‘SET  ON-TIME  1’  will  then  be  displayed  and  the  time  setting  for  the  first ON  1 time  for MONDAY  will  now  be  flashing  to  indicate  it  can  be  changed.  If  you  do not  wish  to  change  the  time,  press  the  green   button  and  move  to  the  next step.  If  you  do  wish  to  make  a  change,  use  the    or   buttons  to  change the first ON 1 time. Each press of the button will change the time by 10 minutes. As  soon  as  the  time  has  been  changed,  the  message  ‘ON-TIME  1  OK?’  will  be displayed. Press the green  button to confirm the time is correct and move to the next step. ‘SAVED’ will be displayed for a moment to confirm that any change has been saved to memory.
HOT WATERHEATING
DAY/TIME
HOT WATER
HEATING
RUN
HOT WATERHEATINGHOT WATERHEATING 
						

							


Note:  When  pressing  the   button  the  next ON  or OFF  marker  may  start  to  flash. This indicates you have tried to set a time equal to one of the next programme times already  in  the  memory.    Similarly,  when  pressing  the   button  the  previous ON  or OFF  marker  may  start  to  flash.  This  indicates  you  have  tried  to  set  a  time  equal  to one  of  the  previous  programme  times.  If  this  happens  the  ST9400C  simply  moves both times together as long as you continue to press the   or  buttons.  Follow the procedure in ‘Reviewing the Programme Times’ (page 7) to check and adjust these times as necessary.
c. ‘SET OFF-TIME 1’ will be displayed and the first OFF 1 time will now be flashing. If you do not wish to change the time, press the green  button and move to the next step.  Otherwise,  use  the    or   buttons  to  change  the  time.  Press  the  green  button to confirm the time is correct and move to the next step. ‘SAVED’ will be displayed for a moment to confirm that any change has been saved to memory.
d. The  remaining ON  and OFF  times  (ON  2,  OFF  2,  ON  3,  OFF  3)  can  be  set  by using  the    or   buttons  to  change  the  time,  and  the  green   button  to confirm  the  time  is  correct  and  move  to  the  next  step.  If  you  do  not  wish  to change  the  time,  just  press  the  green   button  to  move  directly  to  the  next ON/OFF time without making any changes.
e.  After setting or reviewing the last off time,  OFF , the message ‘COMPLETE’ will be displayed to indicate the times for Monday have been set.
You now have a choice of how to set the programme for the next day:
Copying one day’s Programme to another day (example Monday to Tuesday):
f.  Whilst  the  day  is  showing  Monday,  Press  the COPY  DAY  button.  The  message ‘COPY MON TO TUESDAY OK?’ will be displayed and the letters TUE will flash to indicate the programme for Monday can be copied to Tuesday.
g. To select a different day to copy to, press the NEXT DAY button to cycle through the days. With each press of the NEXT DAY button the message will change to indicate the new day you are copying to.
h.  When  the  required  day  is  indicated,  press  the  green   button  to  confirm,  and the message ‘MON COPIED’ will be displayed for a moment. The day into which Mondays programme has been copied is now available to have its programme edited.
Note: Once a day’s programme has been confirmed in this way, it now becomes the day whose programme is copied if the COPY DAY button is pressed again.
OR
Programming a Different Day:
i.  Press the NEXT DAY button to select the next day, which is displayed along the top of the screen.  The programme for that day can then be adjusted by following steps b – e above.  Programmes for the remaining days can be set in the same way, using the NEXT DAY button to move to the next day.
PROGRAMMING YOUR ST900C 
						

							
9

PROGRAMMING YOUR ST900C
Exiting HOT WATER Programming Mode:
To exit HOT WATER programming mode, move the slider to the RUN position. This can be done at any time during the programming process, and any changes made and confirmed with the  button will have been saved.
Note: If the unit is left in HOT WATER Programming mode for more than 10 minutes without the  slider  being  moved  or  any  buttons  pressed,  the  message  ‘MOVE  SLIDER’  will  be displayed.  Press a button to finish programming, or move the slider to the RUN position.
Modifying the Heating Programme
The  heating  programme  has  three  pairs  of ON/OFF  switching  times  per  day.  Each time  can  be  set  between  3.00  am  and  2.50  am  (on  the  next  day)  to  allow  you  to programme the heating to stay on past midnight, if required. 
a. Move the slide switch to the HEATING position. ‘SET HEATING’ will show briefly to verify this action.
b.  Now follow the same procedure to set the times as described in ‘Modifying the Hot Water Programme’ (page 7) steps b. to i.
Exiting HEATING Programming Mode:
To exit HEATING programming mode, move the slider to the RUN position. This can be done at any time during the programming process, and any changes made and confirmed with the  button will have been saved.
Note: If the unit is left in HEATING Programming mode for more than 10 minutes without the  slider  being  moved  or  any  buttons  pressed,  the  message  ‘MOVE  SLIDER’  will  be displayed.  Press a button to finish programming, or move the slider to the RUN position.
Disabling / Enabling Time Periods (for Heating and/or Hot Water)
To disable any of the time periods ON 1 to OFF 1, ON 2 to OFF 2, or  ON   to OFF  , simply set the ON time and its paired OFF time to the same time, and the programme will just ignore them. 
To re-enable the time period, simply set the two ON and OFF times to be different.
HOT WATERHEATING
DAY/TIME
HOT WATER
HEATING
RUN 
						

							
10

OPERATING YOUR ST900C
Choosing the Operating Mode (for Heating and/or Hot Water)
The operating mode may only be changed when the slider is set to the RUN position.
A  green INDICATOR  LAMP  shows  when  the  heating  or  hot water is switched ON.
Two MODE buttons are provided to select the Operating Mode and therefore how the heating and hot water are controlled.
Heating has four possible Operating Modes; these are OFF, AUTO, ONCE, CONT.  Pressing the heating MODE button scrolls round these modes in sequence, and the display indicates which mode is currently active.
• 
OFF mode
  The heating will remain OFF.
• 
AUTO (Automatic) mode
  The heating will be switched ON and OFF according to the heating programme.
• 
ONCE mode
  The heating will come ON at the first programmed ON time, and go OFF at the last programmed OFF time.
• 
CONT (Continuous) mode
  The heating will remain ON continuously.
The  hot  water MODE  button  operates  in  the  same  way  as  described  above  for  the heating MODE button.
Overriding the Operation Without Changing the Programmes
In AUTO and ONCE operating modes, the OVERRIDE buttons switch the heating or hot water ON or OFF without altering the programme. 
When the indicator lamp is ON, pressing the OVERRIDE button switches the heating or hot water OFF until the next programmed ON time.
When  the  indicator  lamp  is OFF,  pressing  the OVERRIDE  button  switches  the heating or hot water ON until the next programmed OFF time.
The LoT™ Display will provide you with information about the override.
DAY/TIME
HOT WATER
HEATING
RUN
HOT WATERHEATINGHOT WATERHEATING