THR840DUK Digital Thermostat | Honeywell instruction

User Manual

THR840DUK Digital Thermostat

50051982-001 Rev. A

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Honeywell user manual THR840DUK Digital Thermostat

Contents

THR840DUK Digital Thermostat Contents An explanation for householders What is a room thermostat? About your new thermostat Install and set up thermostatQuick reference 25.0 C On/off switch and frost protectionHeating or cooling control Energy-saving ECO mode Temperature control24.0 C Wall bracket installation System installation Wiring diagrams Connect system wiringMake sure electrical power is off Basic boiler Combi boiler Wiring diagrams Activate batteries and mount thermostat 35.0 CSystem test Installer setup functions Installer setupTo change installer settings Function Description Setting Options Your heating system Changes required Setting Options Customised settings for your systemYour cooling system Changes required Setting Options Case of difficulty Description of functions Disposal and recycling Limited WarrantyDisposal and recycling Please retain these instructions for future reference Need Help?