INSSTE402P0711
2
1. Description
The electronic thermostat STE402P can be used to
control electric heating units such as electric base-
boards, convectors, or aeroconvectors. It keeps the
temperature of the room at the desired set point with
WARNING
Before installing and operating this product,
the owner and/or installer must read, under-
stand and follow these instructions and keep
them handy for future reference. If these in-
structions are not followed, the warranty will
be considered null and void and the manu-
facturer deems no further responsibility for
this product.
Moreover, the following in-
structions must be adhered to in order to
avoid personal injuries or property dam-
ages, serious injuries and potentially fa-
tal electric shocks.
All electric connections
must be made by
a qualified electrician
,
according to
the electrical and building
codes
effective in your region. Do NOT con-
nect this product to a supply source other
than 120 VAC to 240 VAC, and do not exceed
the load limits specified. Protect the heating
system with the appropriate circuit breaker
or fuse. You must regularly clean dirt accu-
mulations on the thermostat. Do NOT use
fluid to clean thermostat air vents.
Note:
This handling description is printed prior to
product development. When a part of the product
specification must be changed to improve operability
or other functions, priority is given to the product
specification itself. In such instances, the instruction
manual may not entirely match all the functions of
the actual product.
Therefore, the actual product and packaging, as well as
the name and illustration, may differ from the manual.
The screen/LCD display shown as an example in this
manual may be different from the actual screen/LCD
display.
a high degree of accuracy. It has an easy user inter-
face and can manage up to four programming periods
a day. This product is designed for installations with
electrical current − with a resistive load − ranging from
1.2 A to 16.7 A at 120/240 VAC.
This thermostat is not compatible with the
following installations:
• electrical current higher than 16.7 A with a resistive
load (4000 W @ 240 VAC and 2000 W @ 120 VAC);
• electrical current lower than 1.2 A with a resistive
load (300 W @ 240 VAC and 150 W @ 120 VAC);
• inductive load (presence of a contactor or a relay);
• central heating system.
Parts supplied:
• one (1) thermostat;
• two (2) mounting screws;
• two (2) solderless connectors suitable for copper wires.
2. Installation
Selection of thermostat location
The thermostat must be mounted on a connection 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 ex-
empt 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;
• close or in front of an air outlet;
• close to concealed ducts or a chimney;
• in a location with poor air flow (e.g. behind a door), or
with frequent air draft conditions (e.g. head of stairs).
