Specifications

DT90 DIGITAL ROOM THERMOSTAT
EN0H 8578 UK07 R1 12/08
4
INSTALLATION
Location
DT90 is for use in normal domestic environments, and
so should be located inside the house or building where
the ambient temperature is within the range 0 to 40°C.
Avoid locations with high levels of condensing moisture.
As the temperature control element in the
heating/cooling system, DT90 MUST be located in a
position with good air circulation at average room
temperature on an inside wall 1.2 to 1.5m from the
floor.
Do NOT position the thermostat near sources of heat
(radiators, hot air vents, TV or lights), near doors or
window, or in direct sunlight.
Mounting
DT90 can be mounted directly on the wall or onto an
electrical wall box.
The unit is supplied in 2 x halves, to enable quick and
easy installation of the wiring backplate.
Wiring
DT90 is for fixed wiring only and must be installed in
accordance with the latest Electrical Regulations.
Ensure the wiring connection to the supply is via a fuse
rated at no more than 8 amps and a switch having
contact separation of at least 3mm in all poles (formerly
Class “A”).
Completing the Installation
After wiring is complete, the front piece is attached to
the backplate with a hinging action, until it clips into
place.
CAUTION – isolate power supply and make safe before
wiring the unit to prevent electric shock and equipment
damage. Installation should be carried out by a qualified
Electrician or competent Heating Engineer.