Install Instructions

General Installation Guidelines

Draw an outline of the layout on the room floor including

a foot print of all furnishings that are not yet

installed. Unroll the first few feet of the LX cable. The

starting point of the cable must be placed within 10 ft.

from the thermostat. Using your floor plan determine

your desired spacing of cable (standard 3” c-c) and

strapping (recommended 2’-3’ apart). Note: minimum

distance between the cables must be 1” or greater.

Mark the position of the connection point between the

power lead and the red LX heating cable. This connection

must be concealed in thinset or self-leveling

cement. When using a floor temperature sensing

thermostat, mark the sensor position in the middle of 2

heating cables, about 10 in. (25cm) away from the wall

(within the heated area), as close as possible to the

thermostat.

(recommended in conduit, part#19809099- not included)

If using a floor temperature sensing thermostat, install

the sensor now, either in conduit tube, or directly to

the subfloor. It is recommended that the sensor be

installed in conduit tube. This will allow the sensor

to be easily replaced in the unlikely event of failure.

The sensor and/or tube needs to be installed between

the thermostat wall box and the sensor position.

The conduit tube must be partially countersunk into the

subfloor. Cut a channel approximately 5/16” deep x 5/16”

wide in the floor and wall up to the thermostat for the

sensor conduit. The conduit has to go from the thermostat

and minimum of 10 “ away from the wall towards the

middle of the floor.

Make a sketch layout or a floor plan of the room;

include all permanent furnishings such as toilets,

bathtubs, appliances, cabinetry, etc. Indicate all

dimensions required to determine the available floor

area and the position of the LX thermostat.

TIP: Danfoss recommends that the installation is

documented with photos to note the location of

connections and the sensor.

Step 1. PLAN LAYOUT

Step 2. TRANSFER LAYOUT TO FLOOR

Step 3. INSTALL SENSOR

088L3390 - 06/2009