Table of Contents
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Table of Contents
Summary of Contents for Honeywell Home resideo THR850S
- Page 1 User Manual THR850S One Channel 7 Day Timeswitch 50051986-002 Rev.A...
- Page 2 WARNING: This product must be correctly installed and configured to work properly. If you are not experienced in electrical wiring, we recommend professional installation to avoid possible personal injury or equipment damage. DISCONNECT ELECTRIC POWER BEFORE INSTALLATION: Can cause electrical shock or equipment damage.
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Page 3: Table Of Contents
Contents Wall bracket installation .....15-16 About your new timeswitch System wiring ........17-20 Features ........... 4 Installer setup ........21-22 Quick reference to controls ....... 5 Date/time settings ........6 Appendix Operation and programming Alternate programme schedules ..... 23 In case of difficulty ........24 Operating modes ........ -
Page 4: About Your New Timeswitch
User Manual About your new timeswitch The THR850S is designed to work with your existing thermostat and heating system. It can work automatically, or you can adjust it manually to maintain a comfortable indoor environment while minimising energy use and costs associated with heating your home. -
Page 5: Quick Reference To Controls
Quick reference Current Line of text Current Operating modes Press to extend heating time area (see page 7) time (see page 11) Light is on when heating system is on Daily programme mon tue wed periods (see page 8) 19/06/2010 12:34 Press to override heating programme (see page 10) -
Page 6: Date/Time Settings
Operation and Programming Date/time settings Set to DAY/TIME To change the date or time, set the slider to DAY/TIME. Use the + or - buttons to set the correct day, then press the OK mon tue wed thu fri sat sun SET THE DAY button. -
Page 7: Operating Modes
Operating modes Press the MODE button repeatedly to select an operating mode: mon tue wed fri sat sun Cont: Heating system remains on continuously. 30/12/2010 12:34 Auto: In this mode the timeswitch follows a daily schedule for the heating system, turning it on and off at preset times during the day cont once (see page 8). -
Page 8: Cost-Saving Programme Schedules
Operation and Programming Cost-saving programme schedules The timeswitch is preset at the factory to turn off your home heating system when it’s less likely to be needed. The preset schedule is shown below. To change it, see pages 9-12. (See also two alternate schedules on page 23.) To run this schedule (as shown below, or as you’ve modified it), leave the MODE button set to Auto and move the slider to RUN. -
Page 9: To Adjust Programme Schedules
To adjust programme schedules To programme the heating system schedule: Set to PROGRAMME 1 Move slider to PROGRAMME, then press + or - to adjust the “On” time for Period 1 as shown at left. tue wed thu fri sat sun SET ON-TIME 1 2 Press OK to save, then press + or - to adjust the “Off”... -
Page 10: Special Functions
Special Functions Temporary schedule overrides Press to turn system on or off The OVERRIDE button works like a simple “on/off” switch. If you press the button when the system is on, it will turn off. If off, it will turn mon tue wed fri sat sun OVERRIDE... -
Page 11: Extra Hour
Temporary schedule overrides — Extra Hour Press to add extra hour(s) The EXTRA HOUR button can extend the current heating period for 1 to 3 hours more, or switch on the heating for a short period of time. For example, if you expect guests you may want heating on for longer mon tue wed fri sat sun + i hour... -
Page 12: Holiday Mode
Special Functions Temporary schedule overrides — Holiday Set slider to RUN The Holiday feature turns off your heating while you are away for an extended time (up to 99 days). After the designated time the system mon tue wed SET HOLIDAY resumes normal operation. -
Page 13: Advanced Features
Advanced features Preset programme schedules: The timeswitch is preset to follow the schedule shown on page 8 • (Schedule A) unless you change the settings. However, instead of changing the settings manually, you can choose either of 2 other pre-configured schedules. Schedule B keeps heat on longer if you’re often at home. -
Page 14: Installation And Setup
Installation and Setup System installation Installation procedure 1 Disconnect electrical power 2 Install timeswitch 3 Connect system wiring 4 Restore electrical power 5 Configure system operation Room Timeswitch Boiler Thermostat System wiring NOTE: If you are not experienced in equipment installation and electrical wiring, we recommend that these procedures be done by a professional installer. -
Page 15: Wall Bracket Installation
Wall bracket installation Use a screwdriver to loosen screws and separate the timeswitch from the wall bracket as shown at left. Select a mounting location about 1.2 to 1.5 metres from the floor where the display can be seen clearly, in an area where the ambient temperature is between 0 and 40º... - Page 16 Installation and Setup Mounting options Use appropriate wood screws or anchor screws Mount flush on wall to mount the wall bracket flush against the wall. Use metal screws to mount on an existing junction box. Pull wiring through the wall bracket and connect to screw terminals as shown on page 17.
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Page 17: System Wiring
Connect system wiring Terminal screws Connect wiring from your heating system to the timeswitch terminal screws as shown at left. See wiring diagrams on pages 18-20 for details. 1 Make sure electrical power is off. 2 Strip insulation to expose about 7 mm of bare wire. - Page 18 Installation and Setup Wiring diagrams 230 Vac connection Potential-free connection THR850S Clock (Thermostat) Clock N L 1 2 3 4 3 A MAX N L 1 2 3 4 1 2 3 3 A MAX N L T1 T2 N L T1 T2 BOILER BOILER Note 1: If normal mains voltage is required, link terminals L and 1.
- Page 19 Wiring diagrams 230 Vac connection Potential-free connection Wireless Relay Box Wireless Relay Box / Receiver Unit of / Receiver Unit of wireless thermostat wireless thermostat Clock N L 1 2 3 4 N L A B C 3 A MAX N L T1 T2 Note 1: When connecting to a wireless relay box/receiver unit, the Note 3: This is a Class II device (i.e., double insulated).
- Page 20 Installation and Setup To replace other Honeywell programmers If you are using the THR850S to replace Honeywell timeswitches, the equivalent wiring terminations are shown below. THR850S terminals ST6100A, ST6100C ST9100A, ST9100C ST7000B* If you are replacing the ST7000B, a permanent mains supply must be provided for the THR850S timeswitch, and terminal L must be linked to terminal 1.
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Page 21: Installer Setup
Installer setup Press and hold both Installer settings allow you to customise how your system works. Check the table on page 22 to see if any settings need to be changed. SET INSTALLER OK? To change installer settings: 1 Set slider to RUN. Press OK to begin 2 Press and hold the OK and - buttons together until the screen displays “Set Installer OK?”... - Page 22 Installation and Setup Installer setup functions and settings ** Factory default setting Function Description Setting Options 12: AM/PM 12-hour time format ** Clock format 24: 24-hour time format 0: Always off Screen backlight 1: Screen lit when button is pressed 2: Always on ** 0: No change Summer/winter time change...
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Page 23: Alternate Programme Schedules
Alternate programme schedules In addition to the default programme schedule shown on page 8, you can set the system to run either of the schedules shown below. Either schedule can be changed as described on pages 9-12. Schedule B Monday-Friday ON 1 [off 1] ON 2... - Page 24 For assistance with this product please visit livewell.honeywellhome.com bk-electronic GmbH Hardhofweg 40 74821 Mosbach Germany www.resideo.com Country of origin: UK ©2019 Resideo Technologies Inc. This product manufactured by Resideo and its affiliates. The Honeywell Home trademark is used under licence from Honeywell International Inc. All rights reserved.
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