Honeywell ST9400S Installation instructions
Honeywell ST9400S is a programmable room thermostat with advanced features for controlling your home's heating and hot water system. It offers precise temperature control, customizable schedules, and a user-friendly interface. You can easily set different temperature profiles for weekdays and weekends or create custom programs to match your lifestyle. The ST9400S also includes a service reminder function to notify you when it's time to schedule maintenance, helping you keep your heating system running efficiently.
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Set Service
Set Service parameters are listed in the table below, along with a description of the options that are possible.
‘SET SERVICE’
PARAMETER
Enable or disable service alarm feature
Number of days till next
Service
Number of days for advance warning
Action taken at time-out
Parameter
ID
AL d
Ad
LoT™ Display
Description
SERV MODE
SERV DAYS
DAYS NOTICE
Default Value Range of
Values
0
364
28
Description [LoT™ Display Description]
0, 1 0 = disabled
1 = enabled
001 to 400 001….400
000 = service is overdue
0 to 28 0 …28
[DISABLED]
[ENABLED]
[SET DAY COUNT]
[SET DAYS NOTICE]
Number of EXTRA HOUR button presses allowed in
‘Prompt’ mode
Enable telephone call number display
Enter telephone STD code
Enter telephone number
* Reset ‘SET SERVICE’ parameters to default values to bP tC
St nU rS
ACTION TYPE
1HR BOOSTS
SHOW PHONE
STD CODE
NUMBER
ALRM RESET
2 uL
0
-------
---------
1
0, 1, 2 0 = no action,
1 = switch off,
2 = ‘prompt’ mode uL, 1 to 99 uL = unlimited number,
1…99 = specified number of button presses, after which unit switches off
0, 1
1
[NO ACTION]
[SWITCH OFF]
[PROMPT MODE]
[NUM BOOSTS]
0 = disabled
1 = enabled
[DISABLED]
[ENABLED]
When a or button is first pressed the
LoT™ Display shows a row of dashes which can be adjusted using or buttons, then verified using the button.
1
0,1
When a or button is first pressed the
LoT™ Display shows a row of dashes which can be adjusted using or buttons, then verified using the button.
0 = do not reset
1 = default parameters
[NO RESET]
[RESET]
* This parameter by default has a value of 1, unless any other parameter is adjusted, when it will change to 0. Set it to 1 to reset all parameters back to defaults
To Enter Set Service Mode: a.
Enter Installer Modes (as described on Page 3) and navigate to SET SERVICE mode. In response to the query ‘SET SERVICE OK ?’ press the button to enter
SET SERVICE.
b.
The message ‘ENTER PIN’ will now be displayed, along with the 4-digit entry code format 0---. The first digit will be flashing, to indicate it can be changed.
Use the or buttons to set the first digit, and press to confirm the digit.
c.
At this point the first digit will stop flashing and the second digit will begin to flash, indicating it can be changed.
d.
Proceed in this way to enter the 4 digits of the PIN code.
Upon confirming the last digit, if the PIN was incorrect, the message ‘INVALID’ will be displayed, and then the whole process will start again from step b. above.
e.
If the PIN was correct, the first SET SERVICE parameter
AL will be available to change. This allows you to enable or disable all the service alarm features. At every step, the LoT™ Display will inform you what the parameter means and what option you have selected.
The parameter ID is usually shown on the display separated by a colon from the parameter value.
f.
You can change the parameter value by pressing the
or buttons. At this point the description in the
LoT™ Display will change and the parameter value will flash. If you press the value will stop flashing and will be saved for use.
g.
Press to move to the next parameter available for editing. The parameter ID will change accordingly.
h.
Keep pressing to step around the list of parameters, and use or buttons to change the parameter value.
i.
Any parameter changes that have been confirmed with the button will be saved and used. Some parameters may be made invalid by a previous parameter setting, and these will be skipped over in the setting process.
5 or or
Change PIN
If you intend to change the PIN code, please ensure you take a note of the new code that you are setting.
The process for changing the current PIN code is as follows: a.
Enter Installer Modes (as described on Page 3) and navigate to
CHANGE PIN mode. In response to the query ‘CHANGE PIN OK ?’ press the button to enter CHANGE PIN mode.
b.
The message ‘ENTER PIN’ will now be displayed, along with the
4-digit entry code format 0---. The first digit will be flashing, to indicate it can be changed. Use the or buttons to set the first digit, and press to confirm the digit.
c.
At this point the first digit will stop flashing and the second digit will proceed to flash, indicating it can be changed.
d.
Proceed in this way to enter the 4 digits of the old PIN code. Upon confirming the last digit, if the PIN was incorrect, the message
‘INVALID’ will be displayed, and then the whole process will start again from step b. above.
e.
If the PIN was correct the message ‘SET NEW PIN OK ?’ will appear.
As before, use the or buttons to set the digits, and the button to confirm. Upon confirming the final digit, the message ‘PIN
SET’ will be displayed, and the new PIN code will be held on the screen for 5 seconds, to give you time to note it down.
f.
After setting the new PIN code, you will be taken back to the SETUP
MENU.
Completion Checklist for Installation
1.
Check unit powers up correctly, and that the display does not remain blank.
2.
Set Heating and Hot Water operating modes to AUTO and switch
Heating and Hot Water on and off using the OVERRIDE buttons, to ensure the system is operating correctly.
3.
Check the factory-set day, date, and time are correct and adjust if necessary. Refer to User Guide for details.
4.
If required, enter Installer Setup Mode and adjust Installer Parameters to match the lifestyle and needs of the User. Remember to make a note of these parameter changes in the Configuration Data section of the User Guide.
5.
If required, enter Set Service Mode and enable the Boiler Service
Reminder, and set the appropriate Service parameters.
6.
Explain the operation of the product to the User and help them to set their Heating and Hot Water programmes. There are 3 built-in profiles that can be used as a basis for typical User programmes.
7.
Explain when the User should contact someone to arrange a Service
Visit, and what you have programmed to happen when the Service is overdue.
8.
If required, attach the self-adhesive programme guide label to the underside of the cover flap. The label is supplied in the box and requires to be peeled away from the backing material before use.
9.
Write the date of installation, your name and telephone number in the space provided in the User Guide, in the section ‘Boiler & System
Service Log’.
10.
Remember to leave the User Guide and Installation Instructions with the User and remind them to keep them in a safe place. This forms part of a Home Information Pack.
What the User will See When a Service is Due
If the advance warning has been configured, the screen will flash this message every few seconds, and the User should telephone to arrange a service call before the final date when the service is due.
When the boiler service is overdue the screen will keep flashing the words “SERVICE DUE” every second.
If the NO ACTION option has been selected, the unit will continue to operate as normal and the real time will continue to be shown.
If the SWITCH OFF or PROMPT Actions have been selected, the ‘SERVICE DUE’ message will flash and the word “OFF” will appear on the display. The boiler has been switched off to ensure the safety of the User.
A service appointment should be arranged immediately.
In PROMPT operation, the User can obtain limited use of the boiler by pressing the
HEATING or HOT WATER EXTRA HOUR buttons. Each button press will allow operation of the boiler for 1 hour at a time, and the screen will display the message
“On1h”, as shown. A service appointment should be arranged immediately.
If a contact telephone number has been programmed into the ST9400S, a message will appear on the LoT™ Display indicating the number that should be called.
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.
Honeywell Control Systems Ltd.
Arlington Business Park,
Bracknell
Berkshire
RG12 1EB
Technical Help Desk: 08457 678999 www.honeywelluk.com
Resetting the Service Timer Function
If the Service Timer function is enabled you will be required to reset it after the boiler service has been carried out.
The process for resetting the Service Timer is as follows: a.
Enter Installer Modes (as described on page 3) and navigate to
SET SERVICE mode. In response to the query ‘SET SERVICE OK ?’ press the button to enter SET SERVICE mode.
b.
If you no longer require the Service Timer, disable it by setting parameter AL to 0 and confirm with the button.
c.
If you still require the Service Timer, set the number of days until the next service is due using parameter d and confirm with the button.
d.
Whilst in SET SERVICE mode, use the opportunity to change any other service parameters if required.
e.
Exit by moving the slider to the next position and back again to
RUN .
50022736-006 A
© 2007 Honeywell International Inc.
6
ST9400S Programmer
With Boiler Service Reminder / Shut-down Feature
INSTALLATION INSTRUCTIONS
Introduction
ST9400S is an Electronic Programmer which provides accurate time control for central heating systems with separate programmes for heating and hot water. It has an in-built Boiler Service Reminder / Shut-down
Feature developed to assist Social Housing Landlords to comply with the requirements of Regulation 36 of the Gas Safety (Installation & Use)
Regulations 1998. This is intended as an aid to compliance but should not be used to replace the Landlord’s existing Servicing procedures.
ST9400S is suitable for replacing a wide range of Programmers on the market, and is a direct replacement for Honeywell ST6400 Programmers without the need for re-wiring.
ST9400S Programmers can be combined with other Honeywell controls such as Room Thermostats, Cylinder Thermostats, Wiring Centres and Zone or Diverting Valves to form a fully automatic central heating control system.
Mounting
If the ST9400S is replacing an existing ST6400 then the existing wall-plate and wiring may be used, subject to any required electrical checks.
The Programmer should be mounted at a level where the display can be seen clearly, (1.2 to1.5m from the floor) and the ambient temperature is within the range of 0 to 40°C. The ST9400S is for use in normal domestic environments.
CAUTION
Isolate power supply and make safe before wiring the unit to prevent electric shock and equipment damage. Installation should be carried out by a qualified electrician or competent heating engineer.
Specification
Power Supply: 230V~, 50…60Hz, 10W
Switch Action: 2 x SPDT
Switch Rating: 230V~, 50…60Hz, 3(3)A
Factory set clock
Power Reserve: lifetime battery
Programmes/Settings: permanently stored in NV RAM
Approvals: Conforms to protection requirements of
Directives 2006/95EC and 89/336EC
Mounting Options
RECOMMENDED CLEARANCE DISTANCES:
ABOVE WALLPLATE:
BELOW WALLPLATE:
LEFT/RIGHT OF WALLPLATE:
110mm
100mm
10mm
a. Surface mounting concealed wiring b. Flush switchbox
Fixing holes are spaced to suit BS4662 requirements c. Surface mounting with surface wiring in mini trunking
To remove the unit from the wall-plate, slacken the two securing screws at the bottom of the ST9400S and hinge the unit up to separate the two halves.
Ensure the mounting surface is supporting and fully covers the wiring wall-plate.
Wiring
ALL WIRING MUST BE IN ACCORDANCE WITH I.E.E. REGULATIONS.
THIS UNIT IS FOR FIXED WIRING ONLY.
A switch, having contact separation of at least 3mm in all poles (formerly
Class ‘A’), must be incorporated in the fixed wiring as a means of disconnecting the supply.
The unit is a Class II (double insulated) device. A parking terminal is provided for external earth continuity.
The system must be appropriately fused. A fuse rated at no more than
3 Amps should be installed.
The unit has 4 knockouts for surface wiring, care must be taken to ensure that the cable or mini-trunking completely fills the knockout hole without leaving any gaps.
Final Assembly
Clip the unit onto the hinges on the top of the wallplate and hinge down into position. Tighten the two securing screws using a screwdriver.
Switch on the power – the unit will now be operating according to the built-in programme. Note : the ST9400S is supplied with a factory set clock for faster installation.
Refer to ST9400S User Guide for programming details.
1
WIRING CONNECTIONS
ST9400S Internal Wiring
Clock
OFF ON OFF ON
230V~
50...60Hz
N
L
N L 1 2 3 4
3 AMPS MAX CH OFF CH ON
HW OFF HW ON
Sundial Plan Wiring Diagrams
Y-Plan
T6360/T4360
ROOM STAT
2 3 1
L641
CYL. STAT
2
C
1
V4073
MID-POSITION VALVE
W
Notes
1.
The ST9400S is a Class II (double insulated) device. A parking terminal is provided for earth wiring continuity, if required.
2.
In the Sundial S-Plan, W-Plan, and Y-Plan wiring diagrams, connections are shown to basic boilers only. For wiring connections to Pump over-run boilers refer to Boiler manufacturers’ instructions or to Honeywell for assistance.
3.
It is recommended that gravity circulation hot water systems are fitted with a suitable hot water control valve as shown in the Sundial
C-Plan system.
S-Plan
V4043H
2 PORT ZONE VALVE
HEATING
W
GREY
OWN
ORANGE
V4043H
2 PORT ZONE VALVE
HOT WATER
W
GREY BR
OWN
ORANGE
T6360/T4360
ROOM STAT
2 3 1
L641
CYL. STAT
2
C
1
L
N
230V~
50...60Hz
3 AMPS
MAX
1 2 3 4 5 6 7 8 9 10
L
N
E
PUMP
N L 1 2 3 4 E N L
BOILER
*NOTE 1
ST9400S
L
N
230V~
50...60Hz
3 AMPS
MAX
1 2 3 4 5 6 7 8 9 10
L
N
E
PUMP
N L 1 2 3 4 E N L
BOILER
*NOTE 1
ST9400S
C-Plan
T6360/T4360
ROOM STAT
2 3 1
L641
CYL. STAT
2
C
1
V4043H
2 PORT ZONE VALVE
GREY
W
BR
OWN
WHITEORANGE
W-Plan
Wiring shown as a hot water priority system
T6360/T4360
ROOM STAT
2 3 1
L641
CYL. STAT
2
C
1
V4044
DIVERTING VALVE
BLUE
W
BR
OWN
L
N
230V~
50...60Hz
3 AMPS
MAX
1 2 3 4 5 6 7 8 9 10
L
N
E
PUMP
N L 1 2 3 4 E N L
BOILER
*NOTE 1
ST9400S
L
N
230V~
50...60Hz
3 AMPS
MAX
1 2 3 4 5 6 7 8 9 10
L
N
E
PUMP
N L 1 2 3 4 E N L
BOILER
*NOTE 1
ST9400S
Alternative Wiring Connections for other Honeywell Room Thermostats
Y-Plan, S-Plan, and C-Plan Systems
10-WAY WIRING STRIP 1 2 3 4 5 6 7 8 9 10
Honeywell T6360 ROOM-STAT
Honeywell ELECTRONIC THERMOSTAT
(BATTERY POWERED)
Honeywell WIRELESS THERMOSTAT
(RECEIVER UNIT) *
2
L N
1 3
A B
A B
W-Plan System
10-WAY WIRING STRIP 1 2 3 4 5 6 7 8 9 10
Honeywell T6360 ROOM-STAT
Honeywell ELECTRONIC THERMOSTAT
(BATTERY POWERED)
Honeywell WIRELESS THERMOSTAT
(RECEIVER UNIT) *
2
L N
1
A
A
3
B
B
* Wireless thermostat receiver unit MUST have permanent mains power from fused spur to operate correctly
2 ST9400S Programmer
Replacement Wiring
If using the ST9400S to replace other Honeywell Programmers, the equivalent wiring terminations are shown in the tables below.
ST6200/ST6300/ST6400
ST9400S
L
L
N
N
1
1
2
2
3
3
4
4
ST699/ST799
ST9400S
L
L
N
N
3
4
4
2
5 not connected
6
3
7
1
8 not connected
ST7100
ST9400S
L
L
N
N
3 not connected
4
2
5
4
6 not connected
7
1
8
3
Replacing Other Manufacturers’ Time Controls
ST9400S Programmers will mount directly onto many existing manufacturers’ back-plates, without the need for re-wiring. However, they are also supplied complete with a wiring back-plate, should this not be the case.
Refer to Honeywell for wiring conversion diagrams (see Wiring Guide document EN3H 2393 UK01).
ADDITIONAL PRODUCT FEATURES
Boiler Service Reminder / Shut-down Feature
The ST9400S Service Interval Programmer has been developed to assist
Social Housing Landlords to comply with the requirements of Regulation
36 of the Gas Safety (Installation & Use) Regulations 1998. It is intended as an aid to compliance but should not be used to replace the Landlord’s existing Servicing procedures.
The ST9400S performs like a standard programmer. In addition it can automatically provide a Service Reminder and can be set to Shut-down the heating / hot water system once the gas Boiler Service becomes overdue. This helps to eliminate the potential for an incident to occur after the Landlord’s Safety Certificate has expired.
The operation of the Service Feature is flexible. The landlord or installer can set the following:
• The service interval, in days
• An advance reminder for the tenant, by counting down days until service is due
• A telephone number to call to arrange the service – displayed on the
LCD screen
• How the timer will operate when the service interval has expired.
The options include:
1. Continued normal operation with a Reminder message
2. Total shutdown of heating and hot water
3. “Prompt” mode – shutdown that will allow repetitive manual over-ride for one hour at a time.
The Service feature is configured from a special Installer Mode called
‘SET SERVICE’. Entry into this mode is only possible by entering a unique 4 digit PIN code.
Note: The ST9400S is supplied from the factory with the Service features
DISABLED. They need to be enabled from the Installer Modes. See following section ‘Installer Modes’ for details.
Installer Modes
ST9400S has 3 Installer Modes that enable the product to be customized for the application and for the needs of the User. Each adjustable feature is called a Parameter, and is represented by a number or letter ID and a value. The Modes are:-
• Installer Setup
This is the same as the Installer Setup for standard ST9000 time controls.
It allows features to be adjusted to suit user lifestyles or preferences, for example; backlight operation, automatic time-change, and selection of the default time programme. It is entered by a combination of button presses.
• Set Service
This is where the ST9400S Boiler Service Reminder and Shut-down
Features can be set. This mode can only be entered by using a 4 digit PIN code. The factory supplied default PIN code is 0000
• Change PIN
This mode allows the 4-digit PIN code to be adjusted. It is itself protected by the PIN code. When the code is changed this new code is used to enter both SET SERVICE and CHANGE PIN modes.
To Enter & Navigate Around the Installer Modes: a.
Ensure the slider is in the RUN position, then press and hold and buttons together for 8 seconds. Ignore the ‘NOT VALID’ that is displayed for a few seconds. The message ‘SET UP MENU’ will show briefly, to indicate you have entered the Setup menu. The
LoT™ Display will continue to show messages indicating which
Installer Mode is possible to select, for example ‘SET INSTALLER
OK ?’ b.
Use the or buttons to navigate to the correct Installer
Mode.
c.
Use the button to confirm you wish to enter that particular mode.
Installer Mode
Installer Setup
Set Service
Change PIN
LoT™ Display Message
‘SET INSTALLER OK ?’
‘SET SERVICE OK ?’
‘CHANGE PIN OK ?’
To Exit Installer Modes:
You can exit the Installer Modes at any time by moving the slider to the next position and then back again to RUN. Any changes that have been confirmed will be saved and used.
Note: The Installer Modes and the Setup Menu will exit automatically after 10 minutes if the slider is not moved and no adjustments have been made in this time.
Installation Guide 3 ST9400S Programmer
Installer Setup
Installer Setup parameters are listed in the table below, along with a description of the options that are possible.
INSTALLER PARAMETER
24hr or am/pm clock display
Configure backlight operation
(backlight consumes no additional energy)
Enable/disable auto time change
Number of ON/OFFs per day
Select default time programme
* Reset all parameters
Parameter
Number
1
2
3
5
6
8
LoT™ Display
Description
CLOCK MODE
BACKLIGHT
AUTO TIME
ON PERIODS
DEF PROFILE
PROG RESET
Default Value
12
2
1
2
A
1
Range of
Values
12, 24
0, 1, 2
0, 1
2, 3
A, b, C
0, 1
Description [LoT™ Display Description]
12 = am/pm display,
24 = 24hr display
0 = off,
1 = on if button pressed,
2 = on continuously
0 = disabled,
1 = enabled
2 = 2 on/offs per day,
3 = 3 on/offs per day
A = standard, b = at home,
C = economy
0 = do not reset
1 = default parameters
[AM-PM]
[24 HOUR]
[NO B-LIGHT]
[B-L DELAY]
[B-LIGHT ON]
[NO CHANGE]
[TIME CHANGE]
[2 PER DAY]
[3 PER DAY]
[PROFILE A]
[PROFILE B]
[PROFILE C]
[RESET OFF]
[RESET ON]
* This parameter by default has a value of 1, if any other parameter is adjusted it will change to 0. Set it to 1 to reset all parameters back to defaults.
To Enter Installer Setup: a.
Ensure the slider is in the RUN position, then press and hold the and buttons together for 8 seconds. Ignore the ‘NOT VALID’ that is displayed for a few seconds. The message ‘SET UP MENU’ will show briefly, followed by ‘SET INSTALLER OK ?’ b.
Press the button to take you into the Installer Mode
Parameter Menu.
c.
Parameter 1 is now available to change. This is to allow you to change the clock format from 12 hour
AM/PM to 24 hour. At every step, the LoT™ Display will inform you what the parameter means and what option you have selected. The parameter number is shown on the display separated by a colon from the parameter value.
d.
You can change the parameter value by pressing the
or buttons. At this point the description in the
LoT™ Display will change and the parameter value will flash. If you press the value will stop flashing and will be saved for use.
e.
Press to move to the next parameter available for editing. The parameter number will change accordingly.
f.
Keep pressing to step around the list of parameters, and use or buttons to change the parameter value.
g.
Any parameter changes that have been confirmed with the button will be saved and used.
To Exit Installer Setup:
You can exit Installer Mode at any time by moving the slider to the next position and then back again to RUN.
Note: Installer Mode will exit automatically after 10 minutes if the slider is not moved.
LoT™ Display
Parameter
Number
Parameter
Value or
Installation Guide 4

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