LATICRETE STRATA_HEAT 0802-0067-2, Installation Manual

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LATICRETE only recommends STRATA_HEAT™ Thermostats designed for use with underfloor heating to control the STRATA_HEAT Wire 

loose heating cables. When using multiple loose heating cables you can connect them in parallel to the same thermostat. Check with your 

installer or call LATICRETE for circuit sizes and maximum loads.
The thermostats come with a 9' (2.74 m) sensor cable to detect the temperature under the floor finish. The end of the probe wire 

contains a capped sensor that should be evenly centered between two heating cables at least 12" (305 mm) into the heated area. At no 

time should the probe wire cross the heating cable.
If you have more than one heating cable, all the lead wires need to be connected in parallel to the thermostat. For convenience, it may 

be easier to run multiple lead wires to a junction box and then take a single wire (which has the appropriate rating) from the junction box 

to the thermostat.
NOTE: 240V wires are Red and Black. 120V wires are Yellow and Black. Connect ground wires to the power source ground. 
The total Amp load of the heating cable(s) must not exceed the thermostat’s Amp limit or the Amperage rating of the circuit or other 

control switch without using an appropriately rated contactor/relay.
The LATICRETE STRATA_HEAT Wire has a maximum resistive load of 15 Amps.

Please refer to the table on page 7 to calculate the 

amperage load for your particular system. 
For smaller areas, you may be able to utilize an existing circuit. In most cases, however, you will need a separate dedicated circuit to 

power the LATICRETE STRATA_HEAT Wire heating cables. 
The STRATA_HEAT Thermostat should be connected to the main electrical supply via a fuse or circuit in accordance with the National 

Electrical Code. If the STRATA_HEAT Thermostat used does not include a built-in Ground Fault Circuit Interrupter (GFCI), then one must be 

added to the circuit between the main power supply and the thermostat. If the thermostat does include a GFCI, it is NOT recommended to 

include another in the circuit, as this may cause accidental tripping of the control unit.
Further details on the installation of the thermostat can be found in the instruction manual included with the thermostat. 

Ensuring Safety

Install the STRATA_HEAT Thermostat within the same room as the STRATA_HEAT Wire heating cables. In order to ensure the efficient 

running of the system within bathrooms, we recommend that the controls are located at least 60 inches (1.52 m) away from shower 

openings or basin back splash areas so you minimize the possibility of exposure to water.
The control card on page 23 of this manual must be attached to the circuit breaker box for referral by the homeowner or electrical 

inspector.

CONTROLLING YOUR SYSTEM