Honeywell T4H110A1021 T4 Programmable Thermostat Installation Guide

Honeywell T4H110A1021 T4 Programmable Thermostat Installation Guide

Quick Start Installation Guide

Compatible with 24-230V on/off appliances such as gas boilers, combi-boilers and zone valves. Not compatible with 230V electric heating.

Installation in 3 steps…

Must be installed by a competent person. To ensure your safety make sure the mains power is switched OFF before accessing wiring.

Wire the Thermostat
Find a suitable wall location away from draughts, direct sunlight or other heat sources, and where cables can be run from the boiler to the thermostat.

A) Separate the wallplate from the thermostat, and using a screwdriver open the wall plate terminal cover to connect wires.

B) Connect wires according to wiring diagrams and clip the cover closed.

Basic 230V Boiler

Combi-Boiler

To prevent a short circuit from a loose wire –

•  When using multi-core cables: Only remove enough outer insulation to allow secure fixing of the cores into the terminal block.
•  When using single core cables: Secure them together with a cable tie as close as possible to the terminal block.

Power Up and Test

A) Power Up the Thermostat Remove the battery tab and clip the thermostat onto the wall plate.

B) Power Up the Heating System and do a quick functional test on the thermostat to check that it switches the boiler.

Configure the System

Specific settings for the thermostat and heating system can be configured in the advanced menu. Press and hold and then buttons together until the display changes (approx. 3 seconds).

A) Press and buttons to navigate through the parameter list

B) Press and buttons to change a parameter

C) Press button to save the change (or press to cancel the change)

D) Press button to exit advanced menu and save any changes

Adding a Remote Temperature Sensor

A remote temperature sensor can be added  if the Thermostat needs to be installed in a different location from where the room temperature needs to be measured.

If a remote sensor is added parameter No 8 Ss needs to be changed to ‘1’.

Parameters

N o             Description Settings (default in bold)

6 (gas or combi boiler / zone valve)

9

 |  | 12
3 OT| Minimum on time| 1 – 5 (mins) (set to 4 mins for oil boiler)
4 LL| Lower Temperature Limit| 5 – 21 (°C)
5 UL| Upper Temperature Limit| 21 – 35 (°C)
6 SO| Schedule options| 1 = 7 day (different schedule each day of the week)
2 = 5 + 2 day (weekday + weekend schedule)
3 = 1 day (same schedule every day)
7 NP| Number of periods per day| 4 or 6
8 SS| Wired Remote Sensor| 0 = No Remote Sensor , 1 = Wired Remote Sensor
9 LC| Fail Safe mode| 0 = Boiler off , 1 = Boiler 20% on / 80% off
10 BL| Backlight| 0 = Off, 1 = On (only on demand)
11 CL| Clock Format| 0 = 24 hr , 1 = AM/PM
12 DS| Daylight Saving time change| 0 = Off, 1 = Auto
13 TO| Temperature Display Offset| +/-1.5°C
15 SD| Restore Schedule Defaults| 0 , 1 = reset
16 FS| Restore Factory Settings| 0 , 1 = reset

Troubleshooting

What’s happening?              What itcould mean… How to fix it…

EMC: 2014/30/EU and LVD: 2014/35/EU

ErP: Class IV (+2%), (EU) 811/2013

WEEE Directive 2012/19/EC – Waste Electrical and Electronic Equipment directive

At the end of the product life dispose of the packaging and product in a corresponding recycling centre. Do not dispose of the unit with the usual domestic refuse. Do not burn the product.

Ademco 1 GmbH Hardhofweg 40 74821 Mosbach Phone: +49 1801 466 388 info.de@resideo.com homecomfort.resideo.com
@2020 Resideo Technologies, Inc. All rights reserved The Honeywell Home trademark is used under license from Honeywell International Inc. This product is manufactured by Resideo Technologies, Inc and its affiliates.

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References

• HoneywellHome comfort Europe from Resideo
• Smart Home Solutions in EMEA | Resideo

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