Honeywell Home T4M Instruction Manual

Thermostat
A
B
C
T
T
S
S
Polarity free
OT OT
OpenTherm
Boiler
T4M Thermostat
Programmable Modulating Thermostat
Quick Start Installation Guide
Compatible with OpenTherm appliances only.
Not compatible with 230V boilers, zone valve
applications or 230V electricheating.
Installation in 3 steps...
OpenTherm Boiler
32318058-001 B
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.
Power Up and Test
Power Up the Heating System and do a quick functional test
on the thermostat to check that it switches the boiler.
A) Separate the wallplate from
the thermostat, and using a
screwdriver open the wallplate
terminal cover to connect wires.
B) Connect wires according
to wiring diagrams and
clip the coverclosed.
max 6mm
min 0.25mm²
max 1.5mm²
1.2-1.5m
1
Wire the
Thermostat
2
Power Up
and Test
3
Configure
the System
S
S
Must be installed by a competent person.
To
ensure your safety make sure the mains
power
is switched OFF before accessing wiring.
A
B
C
T
T
T
T
S
S
EN
OpenTherm
Communication
1
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.
Press the button to increase
the
temperature to maximum
and
check the boiler switches
on
–
The heat demand icon on
the
thermostat should be
on
.
Now press the button to decrease
the temperature to minimum and
check the boiler switches off
–
The heat demand icon on the
thermostat should also go
off
.
2

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).
Parameters
N
o
Description Settings (default in bold)
1 LA
Language 1 = EN , 2 = NL, 3 = DE, 4 = FR, 5 = ES
4 LL
Lower Temperature Limit 5 - 21 (°C)
5 UL
UpperTemperature 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)
A) Press and buttons tonavigate
through the parameter list
C) Press buttontosave the change
(orpress to cancel the change)
B) Press and buttons to
change a parameter
D) Press button to exitadvanced
menu and save any changes
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
OpenTherm Data ID's
N
o
Description Settings (default in bold)
Troubleshooting
What’s happening? What itcould mean... How to fixit...
OT1 Low load control 0 = Off, 1 = On
OT2
Control setpoint 5 - 99°C
Thermostat
display is blank
No power to
heating system
Check heating system is powered
OT3
Supply water temperature 5 - 99°C
Faulty wiring connection Check wiring at thermostat
and boiler terminals
OT4
Returnwater temperature 5 - 99°C
OT5
Max. supply water temperature 5 - 99°C
Display =
Faulty temperature
sensor
Replace thermostat or check wiring to
remote temperature sensor if fitted
OT6
Hotwater temperature 5 - 99°C
Thermostat shows
heat demand
Boiler (water) already
at temperature
Normal behaviour - wait for
water temperature to drop
OT7
Hot water setpoint 5 - 99°C
OT8
Actual power 0 - 99%
OT9
Water pressure 0.0 - 9.9
OT10 OTC control 0 = Off, 1 = On
OT11
OTC curve 4 - 40 ( 16 )
OT12
Room compensation 0 = Off , 1 = On
but boiler doesn't
respond
Faulty wiring connection Check wiring at thermostat
and boiler terminals
Conforms to protection requirements of the following directives:
EMC: 2014/30/EU and LVD: 2014/35/EU
ErP: Class VI (+4%), (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.
www.resideo.com
Ademco 1 GmbH
Hardhofweg 40
74821 Mosbach
Phone: [phone]
[e-mail]
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.
3
Parameter
Number
Parameter
Setting