Install Instructions

STEP 2.3

Power Lead Conduit

Install a minimum of 3/4" rigid or flexible Listed conduit from the control electrical box or

junction box to the slab location. Extend it 2" to 6" into the slab edge and attach a bushing to

the end to prevent damaging the cable power leads.

STEP 2.4

Sensor Conduit

The SunStat sensor is designed to be embedded in the slab. However, it is recommended that

the sensor be installed in a minimum of 1/2" rigid or flexible Listed conduit for added protection.

If the end of the conduit is sealed, this would allow the sensor to be removed and replaced if

there ever is a problem. Install so that the sensor tip is located 1" below the surface, half-way

between heating cables, and at least 1' into the heated area.

STEP 2.5

Rough-in Wiring

Install appropriate 12 or 14 AWG electrical wire from the circuit breaker or branch circuit

source to the SunStat electrical box (and SunStat Relay box(es) if needed) following all codes,

see Table 5.

If SunStat Relay(s) are used, feed appropriate wire between the SunStat Relay(s) and the

SunStat thermostat. See SunStat Relay instructions for details of wire size and type.

STEP 2.6

Mark the circuit breaker in the panel which feeds the system with “Floor warming/bath” or

similar description.

Splice, not

in conduit

Power

Lead

Heating

Cable

Concrete

slab

Gravel base