Honeywell THR840DUK user manual Connect system wiring, Wiring diagrams, Basic boiler Combi boiler

Page 8

Installation and Setup

Connect system wiring

1.0- 2.5 mm2 6 mm max.

			homexperttm by Honeywell THR840DUK Digital Thermostat

		Wiring diagrams
Connect wiring from your heating or cooling		Basic boiler	Combi boiler
equipment to the thermostat as shown at left.
See wiring diagrams on pages 15-17 for details.
1	Make sure electrical power is off.
2	Strip insulation to expose about 6 mm of
	bare wire.
3	Use a screwdriver to loosen terminal screw,
	insert wire into slot, then tighten screw.
4	Replace thermostat cover, then restore
	electrical power.

NOTE: All wiring must comply with IEE regulations. Keep AC mains supply/load cables separate from equipment wiring.

Image 8

Contents THR840DUK Digital Thermostat Contents What is a room thermostat? An explanation for householdersQuick reference Install and set up thermostatAbout your new thermostat Heating or cooling control On/off switch and frost protection25.0 C 24.0 C Temperature controlEnergy-saving ECO mode System installation Wall bracket installationConnect system wiring Wiring diagramsMake sure electrical power is off Basic boiler Combi boilerWiring diagrams System test 35.0 CActivate batteries and mount thermostat Installer setup Installer setup functionsTo change installer settings Function Description Setting OptionsYour cooling system Changes required Setting Options Customised settings for your systemYour heating system Changes required Setting Options Description of functions Case of difficultyLimited Warranty Disposal and recyclingDisposal and recycling Please retain these instructions for future referenceNeed Help?