Install Instructions

Step 4.5

Ceramic or Stone Tile Applications

For either application below, exterior-grade materials should be selected and installed per manufacturer’s recommen-

dations. Only vitreous tile (non-porous) tile should be used as other tile will absorb moisture which will lead to failure.

The maximum thickness above the cable should be no less than 1.5 and no more than 2.5”. A movement joint should

be installed between any heated and non-heated area.

1) Dry-set or Latex-Portland Cement (thin-set) Mortar Application – In this applica-

tion, the mat or cable is already installed in the concrete slab. The primary concern

is to install a cement mortar bond coat (thin-set) and tile according to Tile Council of

North America (TCNA) recommendations for exterior applications (F102-07). Mortar

and grout materials should be as specified per American National Standards Institute

(ANSI) for exterior applications.

2) Cement Mortar or Thick-set Application – In this application, the mat or cable is installed

above the structural slab in a thick mortar bed and bond coat according to TCNA F101.07. A

1.25” minimum mortar bed should be placed over the cable or mat according to ANSI A108.1A

guidelines. Above this layer, the mortar bond coat and tile is installed.

STEP 4.6

Use a digital multi-meter to measure the resistance between the conductors of the mat/cable power leads again.

Record these resistances in Table 3 under “After coverings are applied”.

Phase 5: Controls and Sensors

STEP 5.1

De-energize all circuits feeding this system before doing any electrical work.

STEP 5.2

If a slab sensor is being installed, uncover the cap or seal on the embedded sensor socket. Feed the sensor leads through

the conduit up to the control. Secure the sensor into the socket and finish this installation as required by the sensor

manufacturer.

STEP 5.3

Make wire connections at junction boxes for the ProMelt Mat/Cable power leads to the power wiring from the control. If the

junction box is located outdoors, it is highly recommended to use wet location rated wire nuts or crimps to avoid corrosion.

STEP 5.4

Install the control at its location according to the instructions provided with the control. Make wiring connections to the

power source and to the sensor wires and mat/cable lead wires. Caution: The ground wire supplied with the mat/cable must be

connected to a suitable grounding/earthing terminal.

STEP 5.5

After careful inspection of all wiring, connect the power supply wiring to the GFCI type circuit breaker and turn it on.

STEP 5.6

Follow instructions for the control to set it up. The sensor should not allow the system to energize the ProMelt until proper

conditions exist. The control may allow you to temporarily test the system for just a few minutes. If you have a clamp-on

type electrical test meter, energize the system briefly and verify it is drawing the proper level of current into the mat/cable as

planned.

Do not fully energize the ProMelt, except for this brief test, until the concrete is cured or asphalt is cool. This could cause

improper curing of the surface materials.

CAUTION: Do not operate the system with air temperatures above 50°F (10°C) except for this brief test. This will stress

the materials and reduce the life of the heating cable and may cause damage to the materials and heating cables.

Refer to Typical Wiring Diagrams on pages 20 and 21.