Condensed Snow Melt Specification
October 26, 2006 – SNOW 1.6
HeatLink® Snow Melt System
1. HeatLink snow melt system using 5/8" nominal HeatLink® polyethylene crosslinked (PEX) piping complete with UV stabilization. PEX pipe to have an operating temperature of 95°C (203°F) and an operating pressure of 6 BAR (90 PSI).
2. Piping to be placed at 23cm (9") spacing (maximum!) using the HeatLink® pipe tracking system to ensure even spacing and height regulation. Pipe track to be clipped on top of a polystyrene insulation barrier using a track staple.
3. Pressure test pipe at 80 - 100 PSI for a minimum of 24 hours before and during concrete pour.
4. Installation of piping and controls as per manufacturers instructions (Length of loops to be determined by HeatLink computer designed layout) (Contact the local HeatLink representative for complete material package and layout instructions).
5. System to be controlled with an inslab or outdoor temp. snow melt mixing valve controller in conjunction with a snow / ice detector or an in-slab sensor. Detector or sensor to operate a fully automatic - modulating 4-way mixing valve and motor.
6. Piping to be sleeved using protective conduit elbows where pipes penetrate the concrete flooring. Provide a 300mm (12") protective sleeve where PEX pipe crosses expansion joints.
7. For ramps where a topping of only 50mm (2") is provided, layout will require a 1/2" nominal HeatLink® polyethylene crosslinked (PEX) piping at 15cm (6") pipe spacing.
8. HeatLink® pipe tracking to be used as a clipping element to maintain proper height and uniform spacing.
9. Complete piping to be freeze protected using a 50/50 glycol water solution (i.e. Dowfrost, Ucartherm or equivalent).
10. All inslab materials are to have a 25 year manufacturers guarantee, with a 10 year 3rd party consequential coverage including damage & expenses incurred; please refer to the HeatLink warranty.)