How soon after installation can I switch the system on?

Undertile Heating Systems:  The heater should not be made fully operational until such time as the tile or concrete installer has confirmed that the cement materials (i.e. adhesive & grout) are fully cured.  This may be anything from 1 - 3 weeks.  Turning the system on too early could lead to the cement drying out too quickly, creating an unstable subfloor.

Underlaminate Heating Systems:  Once wired and tested, the system may be switched on immediately.