INSSTE403NP1010
2. Installation
Selection of thermostat location
The thermostat must be mounted on a con-
nection box on a wall facing the heating unit,
at around 1.5 m (5 feet) above the floor level,
on a section of the wall exempt from pipes or
air ducts.
Do not install the thermostat in a location
where temperature measurements could be
altered. For example:
•close to a window, on an external wall, or
close to a door leading outside;
•exposed directly to the light or heat of the
Sun, a lamp, a fireplace or any other heat
source;
•closeorinfrontofanairoutlet;
•closetoconcealedductsorachimney;and
•in a location with poor air ow (e.g. behind
a door), or with frequent air draft conditions
(e.g. head of stairs).
Thermostat mounting and connection
1. Cut off power supply on lead wires
at the electrical panel in order to
avoid any risk of electric shock.
2. Ensure that the air vents of the thermostat
are clean and clear of any obstruction.
3. Make the required connections using the fol-
lowing figures by selecting the proper type
of installation (2 wires or 4 wires), and using
solderless connectors. For connections with
aluminium wires, you must use CO/ALR con-
nectors. Please note that thermostat does
not have polarity.
Two-wire installation
Four-wire installation
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