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B
A
1
Wire the
Thermostat
2
Power Up
and Test
3
Configure
the System
T4 Thermostat
Programmable Thermostat
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.
EN
32318056001 B
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 wallplate
terminal cover to connect wires.
B) Connect wires according
to wiring diagrams and
clip the cover closed.
min 0.25mm²
max 1.5mm²
max 6mm
A
B
C
B
T
S
T
S
A
Wire the Thermostat
1
1.2-1.5m
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.
A) Power Up the Thermostat
Remove the battery tab and clip the
thermostat onto the wallplate.
B) Power Up the Heating System
and do a quick functional test on the thermostat
to check that it switches the boiler.
Power Up and Test
2
CombiBoiler
Thermostat
3(1)A
T
T
S
S
T1 T2
A
B
C
Thermostat
Basic Boiler
T
T
S
S
3(1)A
A
B
C
Permanent Live
not required
Basic 230V Boiler CombiBoiler
2Port Zone Valve
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.
Thermostat
3(1)A
T
T
S
S
A
B
C
V4043
Zone Valve
To Boiler
Direct Wiring
1


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  • How do I set a minimum temperature as it keeps coming on in the day time Submitted on 2-12-2022 at 14:28

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