Raychem GM-2XT self-regulating heating cable is installed at roof drains to prevent freezing. The heating cable coils inside the cast iron sump receiver and drain bowl to ensure thorough coverage. From the drain bowl, the heat trace runs through conduit to a junction box.
1. PROVIDE RAYCHEM GM-2XT SELF-REGULATING HEATING CABLE, OR APPROVED EQUAL. RD-1 RD-2 CAST IRON SUMP RECEIVER ROOF DECK DOME HEAT TRACE, TYP HEAT TRACE IN CONDUIT J-BOX, TYP SECTION COIL HEAT TRACE IN DRAIN BOWL TO ENSURE COVERAGE, TYP 1 DETAIL NOTES
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