ProMelt Installation Manual

Outdoor Heating Application:

If the ProMelt is intended to add heat to the space or objects in the area, special consideration must be given to the

controls and sensing since the goal is different from snow melting.

If the ProMelt is to be used for both automatic snow melting and heating, first follow the guidelines above for selecting

the snow sensing and control solution.

Select the desired heating control:

• A 24VAC "slab sensing" thermostat control may be used. Ask your dealer for the DualTemp model thermostats.

Connect it to the Contactor Pro™ panel along with the snow melt sensor, allowing either one to operate the

system. Plan to install the sensor included with this thermostat into conduit for protection in the slab. Refer to

the Appendix for wiring diagrams and the instructions provided with the selected thermostat for details.

• Other controls may be used as long as they have a slab sensor, an indicator that the system is heating, are sized

properly for the system, and are rated for the application and location selected.

DO NOT operate the ProMelt system in ambient temperatures above 68°F (20°C), except for a brief test. Heating per-

formance is never guaranteed. The amount of heat added to the area is dependent on many factors such as air and

ground temperature, wind speed, solar heat, moisture, etc. If you have any questions regarding expected performance

in your application, please contact the factory.

STEP 1.7

Consult with your electrician to make sure the mats/cables, control, and design you have selected will work properly.

• The ProMelt Mat/Cable and its control must be placed on a dedicated power supply from the circuit breaker

panel.

• The ProMelt Mat/Cable is a resistance heating system and should be considered as a continuous load for

branch circuit sizing purposes.

• The circuit breaker must open all ungrounded conductors at the same time. A GFEP type (typically 30 mA trip)

is required to directly protect the ProMelt Mat/Cable.

• Circuit breaker size and circuit wiring should be designed to 125 percent of heating mat load:

-20 amp circuit for load up to 16 amps

-30 amp circuit for load up to 24 amps

-40 amp circuit for load up to 32 amps

-50 amp circuit for load up to 40 amps

-70 amp circuit for load up to 50 amps

• Follow NEC, CEC, and local code guidelines for branch circuit wiring, conduit, and junction box installations.

Outdoor and underground junction boxes and conduit must meet rain tight or watertight requirements as

required.

STEP 1.8

Insulation is not recommended underneath snow melt or exterior heated areas if vehicular traffic will be present as

compression of the insulation may occur over time. Improper type or use may cause cracking of the slab and possible

damage to the ProMelt Mat/Cable.