ThermoPlus AS2
Programmable Room Thermostat
Installation Instructions
The ThermoPlus AS2 Programmable Room Thermostat
offers a number of pre-installed heating profiles which are
easily set-up by the installer or user to provide maximum
comfort. Once complete, user operations are kept to a
minimum by using the +/ - and Warm / Cool buttons on the
front of the unit.
The ThermoPlus contains a selection of five pre-set and one
adjustable profile options, one of these options should have
been set by the Installer to meet your heating requirements.
Care should be taken to ensure the correct profile is selected
that most suits your lifestyle. Details on how to change the
selected profile are located on page 9 of this guide.
1
INSTALLATION AND CONNECTION OF THE THERMOPLUS AS2
SHOULD ONLY BE CARRIED OUT BY A SUITABLY QUALIFIED
PE RSO N. ALWAYS CONSULT TH E SPECI FIC BOI LER
MANUFACTURERS INSTALLATION INSTRUCTIONS BEFORE
COMMENCING THE INSTALLATION .
WARNING : ISOLATE MAINS SUPPLY BEFORE COMMENCING
INSTALLATION
Internal and external wiring connections
Internal Wiring Connections
1
4.5V
>
LIVE (LINE)
2
LOAD (HEAT)
3
NOT USED
N (PARKING)
4
- The ThermoPlus AS2 has
Voltage Free contacts.
-The ThermoPlus AS2 is
battery powered.
2
Rear View of the ThermoPlus
-
1 - Connector pins
2 - Capacity label
3 - Production date label
4 - Batteries
-
4
3
1
+
+
-
+
2
Wiring Diagrams
An example circuit diagram for a typical combination boiler
installation is shown below. This diagram is schematic and
should be used as a guide only.
Please ensure that all installations comply with the current
IET regulations and the boiler manufacturers installation
instructions.
For reasons of space and clarity not every connection has been
included and the diagram has been simplified, for instance
some Earth connections have been omitted.
ThermoPlus AS2
1 2 3
4
L
MAINS
N
SUPPLY
L
NEE
COMBINATION BOILER
TERMINALS
Remove link
if fitted
3
Fitting the backplate (part 1)
To remove the Backplate from the AS2 press the two lugs
located on the underside, the backplate should now be easily
removed. Mounted on the backplate is a wiring block, this will
need to be removed to enable the wiring connections to be
made.
To remove the connection block hold the backplate with the
back facing you and pull gently down on the release lever(see
below) the block will now be easily removed, please remember
to keep this safe until required.
Now position the Backplate
to the wall in the position
where the ThermoPlus is to
be mounted, remembering
that the Backplate fits to the
left hand end of the
thermostat. Mark the fixing
positions through the slots
in the Backplate, drill and
plug the wall. The slots in
Rear view of back plate
the Backplate will compensate for any misalignment of the
fixings.
DO NOT FIT THE BACKPLATE AT THIS TIME.
4
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