Honeywell Home THR840D Digital Room Thermostat User Guide

Honeywell Home THR840D Digital Room Thermostat

Installation

Installer Mode

To enter Installer Mode

To select a parameter

Display

Parameter flowchart

To change a parameter

To exit Installer Mode

Parameters

Description	Parameter	Range of values	Default
Minimum ON/OFF time	Ot	1,2,3,4,5 m	1 m
Cycle rate	Cr	{3,6,9,12}	6
Proportional band width	Pb	1.5 … 3.0 K	1.5K
Temperature measurement offset	tO	-3 … 3 K	0 K
Upper setpoint limit	uL	21 … 35 °C	35°C
Lower setpoint limit	LL	5 … 21 °C	5°C
ECO temperature	ES	5 … 35 °C	18 °C
Heat/cool changeover	HC	0, 1	0
		0 = Disable
Off setpoint adjust	OS	— (= Off), 5…16°C	5°C
Electric heat	EH	0 (<3A) / 1 (3A – 8A)	0 (<3A)
Reset parameters	FS	0 / 1	1 (factory)

Room temperature

Set temperature, inquiry

Set temperature, adjustment

Switch ON/OFF (frost protection enabled)

Heating demand indicator

Frost protection

Fault indicator

Low battery indicator

Heat/cool changeover

Energy Saving ECO feature

Pressing the green ECO button gives a timed period at a different, predefined temperature (18°C)

To set the ECO energy savings time period

The display shows a countdown of ECO time remaining

• Pressing or will now allow the ECO temperature to be changed

To exit ECO mode, press the ECO button again

To exit ECO mode, press ECO button again

For assistance with this product please visit livewell.honeywellhome.com

bk-electronic GmbH
Hardhofweg 40 74821 Mosbach
Germany Country of origin: UK
©2019 Resideo Technologies Inc. This product is manufactured by Resideo and its affiliates. The Honeywell Home trademark is used under license from Honeywell International Inc. All rights reserved.

REFERENCE

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Honeywell Home THR840D Digital Room Thermostat User Guide

Honeywell Home THR840D Digital Room Thermostat User Guide