ProMelt Installation Manual

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STEP 2.9
Paver or Stone Applications
Follow guidelines recommended by the paver manufacturer. If a coarse of sand is to be used to set the pavers, first lay
3/8 to 1/2 inch sand over the base to help protect the mat/cable against damage.
If this is an outdoor heating application, do not install mat/cable directly in sand or similar. The mat/cable must first be
embedded in a concrete slab. Prepare the base according to Step 2.7. The pavers or stone may then be set in sand or
mortar on top of this slab.
STEP 2.10
Ceramic or Stone Tile Applications
ProMelt mats or cables can be installed in the structural slab or in a thick mortar bed above a structural slab. In either
case, the base material should be prepared according to section 2.7 Concrete Application.
ELECTRICAL
STEP 2.11
Install junction boxes in the location(s) planned during the design process Phase 1 (see Step 1.3).
STEP 2.12
Install conduit and branch circuit wiring from the circuit breaker panel to the control location, and from the control to
the junction boxes. Follow local code for wire size, conduit requirements, and proper installation procedure.
STEP 2.13
Install conduit from the junction box to the edge of the slab to be heated. Extend this conduit into the slab edge about
2 to 6 inches and attach a bushing to the end to prevent damaging the mat/cable power leads.
• Follow electrical code for burial depth of the conduit.
• Plan carefully if you are installing edge pavers, edge drainage systems, landscaping, or other items that affect
where the conduit comes in.
STEP 2.14
If a PM-HSC-5 slab sensor is to be embedded in the heated area, install conduit from the control location to the desired
slab location. When installing the PM-HSC-5 slab sensor in asphalt, it is necessary to encapsulate the sensor housing in
a 12"x12" concrete pad. Follow the sensor instructions for proper placement and connections.
STEP 2.15
Install the circuit breaker size and type as determined earlier in step 1.7 (Designing the System). DO NOT connect the
branch wiring to the breaker yet.
STEP 2.16
Label the circuit breaker in the panel which feeds this snow melt mat/cable system with “Snow Melt” or similar.
Phase 3: Installation of Mat and/or Cable
The following Steps 3.1 through 3.12 cover installation basics. Steps
3.13 through 3.14 cover some specific applications and their special
requirements.
BASIC INSTALLATION
STEP 3.1
Determine a time to install the mat/cable when equipment, heavy tools,
and site traffic will be minimal to keep from possibly damaging the
product. Be prepared to apply the surfacing courses over the mat/cable
the same day so it will be protected from damage.
Junction Box
Conduit
Splice not
in conduit
Power Lead
Conduit 2"-6"
into concrete
Concrete
Heating Cable