Single Zone Thermostat
1. Disconnect the mains power from the Heating Appliance.
To ensure your safety, always make sure mains
power is switched off before accessing wiring.
3. Mount the wiring plate
to the wall or wallbox.
Note: the plugs and mounting
screws required are supplied.
4. Connect the Boiler Relay wiring.
2. Remove the wiring
plate from the
2.1 Carefully press a
screwdriver into the
opening until the
cover comes free.
2.2 Tilt the cover upwards
and remove it.
5.1 Wiring for a basic boiler (not requiring a pump overrun).
The boiler relay powers the boiler live input.
Place link here
A B C
N L L
A B C
5.2 Wiring for a boiler that requires a permanent live.
For use with a boiler that requires a permanent live
(a typical Combi boiler wiring). This can be used for
boilers with low voltage or 230Vac room thermostat
inputs. Please check manufacturer’s instructions.
5.3 Wiring for a two-port zone valve.
For use with a boiler that requires a permanent live.
Please check manufacturer’s instructions.
N L L
A B C
G/ Y: Green/Yellow
BL: Blue Motor Neutral
BR: Brown Motor Live
GR: Grey End
switch (if used)
O: Orange End
switch (If used).
In wired system
feeds the boiler.
7. Reconnect the mains power to the Heating Appliance.
8. Locate the thermostat.
• Away from draughts
• Away from heat sources
• Away from direct sunlight
• Positioned about 1.2m – 1.5m from the oor
6. Attach the Boiler Relay
to the wiring plate.
Locate hinges rst
Hinge the housing downwards
and click into place.
Manufactured for and on behalf of the
Environmental and Combustion Controls
Division of Honeywell Technologies Sàrl,
ACS-ECC EMEA, Z.A. La Pièce 16,
1180 Rolle, Switzerland by its Authorised
Representative Honeywell Inc.
Need help? For assistance please visit:
Honeywell Control Systems Ltd.
Skimped Hill Lane, Bracknell, Berkshire
of the packaging and product in a
corresponding recycling centre.
the usual domestic refuse.
the local statutory requirements and
not with the usual domestic refuse.
Conforms to protection requirements
of the following directives:
Hereby, Honeywell, declares that this
Single Zone Thermostat is in compliance
with the essential requirements and other
relevant provisions of Directive 1999/5/EC.
To heating appliance