homexpert THR842DUK User Manual

Wireless digital thermostat

Advertisement

Quick Links

User Manual

THR842DUK Wireless
Digital Thermostat
50051983-001 Rev. A

Advertisement

Table of Contents
loading

Summary of Contents for homexpert THR842DUK

  • Page 1: User Manual

    User Manual THR842DUK Wireless Digital Thermostat 50051983-001 Rev. A...
  • Page 2: Table Of Contents

    Relay box installation ......13 System wiring ........14-15 Battery installation & testing ....16-17 Thermostat installation .......18-19 System test ..........20 Installer setup ........21-25 Copyright © 2010 Honeywell International Inc. homexpert by Honeywell is a trademark of Honeywell International Inc. All rights reserved.
  • Page 3: What Is A Room Thermostat

    User Manual homexpert by Honeywell THR842DUK Wireless Digital Thermostat What is a room thermostat? ...an explanation for householders If your heating system is a boiler with radiators, there will usually be only one room thermostat to control the whole house. But you can have different temperatures in individual rooms by installing thermostatic radiator A room thermostat simply switches the heating system on and off as necessary.
  • Page 4: Quick Start Guide

    Honeywell THR842DUK Wireless Digital Thermostat About your new wireless thermostat Quick reference The THR842DUK is an easy-to-use thermostat designed to maintain a comfortable environment when you Cooling system is ECO mode countdown Heating system is Press to change...
  • Page 5: Operation

    Operation homexpert by Honeywell THR842DUK Wireless Digital Thermostat On/off switch and frost protection Heating or cooling control Press and hold the ON/OFF button as shown at left to turn the The thermostat is pre-set to control only your heating system. If Press and hold both buttons for 5 seconds thermostat on or off.
  • Page 6: Temperature Control

    Operation homexpert by Honeywell THR842DUK Wireless Digital Thermostat Temperature control Energy-saving ECO mode When idle, the thermostat displays the current room temperature. The ECO mode overrides thermostat settings to maintain a different Current room temperature Press to enter ECO mode You can press the p or q buttons at any time to see the “target”...
  • Page 7: Installation And Setup

    Installation and Setup homexpert by Honeywell THR842DUK Wireless Digital Thermostat System installation Install relay box Installation procedure The relay box is wired directly to your heating or cooling equipment. The thermostat 1 Install relay box communicates with the relay box using a wireless RF signal to control the system.
  • Page 8 Installation and Setup homexpert by Honeywell THR842DUK Wireless Digital Thermostat Connect system wiring Wiring diagrams Connect wiring from your heating or cooling Burner (direct control) Combi boiler equipment to the relay box as shown at left. See wiring diagrams on page 15 for details.
  • Page 9 Installation and Setup homexpert by Honeywell THR842DUK Wireless Digital Thermostat Activate batteries and test thermostat Test thermostat (continued from page 16) Grasp and pull to remove the thermostat cover. Discard the plastic 5 Press the q button once. tab inside to activate the batteries, then test as shown below.
  • Page 10 Installation and Setup homexpert by Honeywell THR842DUK Wireless Digital Thermostat Test thermostat location Install thermostat (continued from page 17) Test signal strength to find a suitable location for the thermostat The wireless thermostat can be mounted in the table stand, before installation.
  • Page 11: System Test

    Installation and Setup homexpert by Honeywell THR842DUK Wireless Digital Thermostat System test Installer setup After installation, you should check to make sure the system is Installer settings allow you to customise how your system Set temperature to maximum working properly.
  • Page 12 Installation and Setup homexpert by Honeywell THR842DUK Wireless Digital Thermostat Installer setup functions Installer setup functions ** Factory default setting Enter Installer Setup (see page 19), then press for access to system settings Function Description Setting Options Function Description Setting Options...
  • Page 13 Installation and Setup homexpert by Honeywell THR842DUK Wireless Digital Thermostat Customised settings for your system Description of functions Ot Minimum boiler off time: Check proper setting LL Minimum temperature: When the q button is Your heating system Changes required Setting Options for your system (see page 24).
  • Page 14: Appendix

    Try the test procedures described on pages 16-20. • If the problem cannot be corrected, contact Honeywell Customer Care for assistance (see back cover for contact information). • If above remedies cannot resolve the problem, the thermostat may have to be moved.
  • Page 15 Appendix homexpert by Honeywell THR842DUK Wireless Digital Thermostat Re-binding procedure Re-binding procedure (continued from page 28) If you must replace a wireless thermostat or relay box, the system 5 Press the p button repeatedly until the display shows “CLr.” will not work until both devices can communicate with each other.
  • Page 16: Declarations, Disposal & Recycling

    Honeywell THR842DUK Wireless Digital Thermostat Limited Warranty Declarations, disposal and recycling Honeywell warrants this product for 1 year from date of purchase. We undertake to replace or Declaration repair at our discretion, products should they become defective within 1 year solely as a result Honeywell hereby declares that this wireless product is in compliance with the essential of faulty materials and or workmanship.
  • Page 17 Need Help? For assistance with this product please visit www.homexpertbyhoneywell.com, or call Honeywell Customer Care at 0845 604 2893. Honeywell The Arnold Centre Paycocke Road Basildon, Essex SS14 3EA Technical Help Desk: 0845 604 2893 50051983-001 Rev. A www.homexpertbyhoneywell.com © 2010 Honeywell International Inc...

Table of Contents