Installation Manual for Snow Melting Systems 24/7 Installation Support • Free Design Service • www.WarmlyYours.
Contents 1.0 Product Specifications 1.0 Product Specifications ....................................................................................................... 1 WarmlyYours Heating Cable is designed for outdoor driveways, walkways, stairs and patios. It is well suited for large areas like driveways. 2.0 Selection of the Heating System..........................................................................................
2.0 Selection of the Heating System 7. M inimum bending radius of the Heating Cable shall not be less than 10 times its diameter. Install Chart 8. M inimum spacing of Cables is 3” (76 mm) and maximum recommended spacing of Cables is 4” (89 mm) depending on the atmospheric conditions in your geographic region. Your region may not be suitable for 4” spacing of the heating cable. As spacing distance of wire increases, watts per square foot decrease.
8”-12” crushed rock aggregate Control joint Concrete 4.0 Installation for Snow Melting astic tie wrap t 4.1 Control of Snow Melting System CONTROL PANEL Heating cable secured to rebar with plastic tie wraps 4.2 Electrical Provisions for the Systems 3” P Ncables E The National Electric Code requires that the heating and mats must be Steel bar 3” supplied power by a GFEP (30mA) protected circuit.
4.3 Installation under Asphalt 4c. When the binder coat is in place, it is sometimes easier (especially when installing tire track coverage) to have one person hold the roll of heating mat (wire side down) as hot asphalt is shoveled over it. as the area is covered the installer slowly unrolls the product until the remaining area is completed. 1. Ensure that the paving contractor has a solid base of 4” to 8” (102 mm to 203 mm) of crushed rock aggregate tamped down and ready to receive the asphalt. 2.
4.4 Installation under Concrete Mats. Once conduits & sensor(s) are placed, the topping pour of concrete can be finished. Again, the concrete installer(s) must take care not to walk on the hot-cold splice point, and to avoid damaging the Heating Cables with shovels and rakes. Taping up the shovel blades helps make them less sharp. Like with asphalt, it’s recommended that Mats be placed so the mesh faces up, keeping the wire-side-down to help protect it from shovels. 1.
4.5 Installation under Pavers (Stone or Brick) 7. The paver installer(s) must take care not to walk on the hot-cold factory splice and to avoid damaging the Heating Cables with shovels or rakes. Mats should be placed mesh facing up, keeping the wire-side-down, to help protect them from shovels. 1. Ensure that there is a solid base of 4” to 8” (102mm to 203mm) of crushed rock aggregate base and that it is tamped down and ready to receive the mortar pour. 2.
4.6 Installation of Snow Melting Mat Use scissors to cut the Mat. NEVER cut the Heating Cable For 180 Degree Turn Turn the Mat Flip / Turn the Mat 180˚ For 90 Degree Turn For other shapes, detach Cable from Mat to required length and lay only Cable. Means of attachment may vary project to project.
4.7 Installation of Snow Melting Cable in Finished Asphalt or Cement 1 1. T est The System at Every Stage of Installation Test the snow melting cables with an ohmmeter and megohmmeter as soon as they arrive from WarmlyYours. Please see the “Testing” section in this Manual for testing procedures. 2. Prior to Digging Contact a local utility locating/marking firm to make sure the project won’t run into any gas, water, or electrical lines.
4.7 Installation of Snow Melting Cable in Finished Asphalt or Cement 4 5 4. S aw Cutting Main Lines Saw cut each line to achieve at least a ⅜” wide groove for the snow melting cable. Multiple blades may be needed to accomplish this type of cut. Test with a shorter cut first and use a cable to see if it fits into the groove. Cuts need to be at least 1-½” deep, per the National Electrical Code, and the cable should not run deeper than 2-3” from the surface to ensure proper performance.
4.7 Installation of Snow Melting Cable in Finished Asphalt or Cement 7 7. Laying Out Snow Melting Cables Install the conduit into the drive and run the leads into it and on into the junction box. Verify that factory splice will be 4” away from the conduit when installed. Verify splice location and start installing the cable into the grooves. Verify the length of cable used in the first run of grooves. If more cable was used than planned, coverage at the end will be reduced.
5.0 Testing the Mats and Cable 6.0 Warranty 5.1 Test One: Insulation Resistance (Megohmmeter Required) WarmlyYours provides a warranty for the Heating Cables for a period of 10 years from date of purchase, covering the materials and workmanship under normal operating conditions. 1. Connect one meter clamp to the cold lead (pigtail) inner conductors and the other meter clamp to the metal cable braided sheath (ground) of the Heating Cable.
7.0 APPENDIX A: WARMLYYOURS SNOW MELTING MATS (SUITABLE FOR ASPHALT, CEMENT AND UNDER PAVERS) Part # Size (ft/m) Voltage Area (ft2/m2) Cable Length (ft/m) Total Ohms Total Watts Watts/ft2 (W/m2) Amps WHMA-120-0205 2’ x 5’ (0.61 x 1.52m) 120 10.0 (.93m ) 42.77 (13.04m) 28.80 500 50.00 (538W/m ) 4.17 WHMA-120-0305 3’ x 5’ (0.91 x 1.52m) 120 15.0 (1.39m2) 62.78 (19.14m) 19.20 750 50.00 (538W/m2) 6.25 WHMA-120-0210 2’ x 10’ (0.61 x 3.05m) 120 20.0 (1.86m2) 85.54 (26.07m) 14.
WARMLYYOURS SNOW MELTING CABLES 208V (SUITABLE FOR ASPHALT, CEMENT AND UNDER PAVERS) Part # Voltage Cable Length (feet) Total Ohms Total Watts Watts/ft Amps WHCA-208-0100 208 100' 36.05 1,200 12 5.8 WHCA-208-0128 208 128' 28.28 1,530 11.9 7.4 WHCA-208-0171 208 171' 21.63 2,000 11.6 9.7 WHCA-208-0200 208 200' 18.03 2,400 12 11.6 WHCA-208-0251 208 251' 14.42 3,000 11.9 14.5 WHCA-208-0342 208 342' 10.82 4,000 11.6 19.3 WHCA-208-0377 208 377' 9.
APPENDIX B: CROSS-SECTION OF SNOW MELTING CABLE IN ASPHALT Outdoor Asphalt Snow Melt Application Recommended Products: Snow Melt Rolls 2” to 3” (51mm to 76mm) of finished asphalt 3” (76m m Spacin ) g Snow Melting Mat 1.
1.
crete B lock o r Meta 2” to 3” (51mm to 76mm) of concrete l Chair s 4” to 8” (102mm to 203mm) of crushed rock aggregate base APPENDIX D: CROSS-SECTION OF SNOW MELTING CABLE IN MORTAR BED UNDER PAVERS Outdoor Paver Snow Melt Application Brick and Stone Pavers must NOT be any thicker than 2.5” (63.5mm) 3” (76m m Spacin ) g 1” to 1.5” (25.
Heated Slab Heated Slab Heating cable secured APPENDIX E: to rebar with plastic tie CROSS-SECTION OF wraps SNOW MELT CABLE IN STAIRS Pavers - No lip overhang Pavers - No lip overhang Steel bar Handrail posts should be pre-sleeved, prior to the pouring of concrete or mortar 4’ Dimension B must not exceed 3.5 in (8.9 mm) Topping 2 in. (5.0 cm) 6’ minimum, to 3 in. (7.5 cm) maximum thickness 4’ 6’ B Dimension A must not exceed 3 in (7.
APPENDIX F: SNOW MELT DIAGRAM 240V - TYPICAL LINE DIAGRAM (FOR 6 CIRCUITS/CABLES) WITH PREMIUM CONTROL Heater cable 20ft cold leads to be taken through Installer may use more J-boxes outside or inside building. Inside 240V CIRCUITS HEATER CABLE / MAT #1 240V CIRCUITS 240V 240V HEATER CABLE / MAT #2 J-BOX 240V 120/240 VAC BREAKER PANEL Outside 3/4” (19mm) rigid metal conduit back to J-boxes.
APPENDIX G: SNOW MELT DIAGRAM 277V - TYPICAL LINE DIAGRAM (FOR 12 CIRCUITS/CABLES) WITH PREMIUM CONTROL Heater cable 50ft cold leads to be taken through 3/4” (19mm) rigid metal conduit back to J-boxes. Installer may use more J-boxes outside or inside building.
APPENDIX H: SNOW MELT DIAGRAM 208V - TYPICAL LINE DIAGRAM (FOR 6 CIRCUITS/CABLES) WITH PREMIUM CONTROL Heater cable 50ft cold leads to be taken through Installer may use more J-boxes outside or inside building. Inside 208V CIRCUITS HEATER CABLE / MAT #1 208V CIRCUITS 208V 208V HEATER CABLE / MAT #2 J-BOX 208V 120/208 VAC BREAKER PANEL Outside 3/4” (19mm) rigid metal conduit back to J-boxes.
APPENDIX I: SNOW MELT DIAGRAM 240V - TYPICAL LINE DIAGRAM (FOR 6 CIRCUITS/CABLES) WITH ECONOMY CONTROL Heater cable 20ft cold leads to be taken through Installer may use more J-boxes outside or inside building. Inside HEATER CABLE / MAT #1 240V CIRCUITS 240V CIRCUITS 240V 240V HEATER CABLE / MAT #2 J-BOX 240V 120/240 VAC BREAKER PANEL Outside 3/4” (19mm) rigid metal conduit back to J-boxes.
APPENDIX J: SNOW MELT DIAGRAM 277V - TYPICAL LINE DIAGRAM (FOR 12 CIRCUITS/CABLES) WITH ECONOMY CONTROL Heater cable 50ft cold leads to be taken through 3/4” (19mm) rigid metal conduit back to J-boxes. Installer may use more J-boxes outside or inside building.
APPENDIX K: SNOW MELT DIAGRAM 208V - TYPICAL LINE DIAGRAM (FOR 12 CIRCUITS/CABLES) WITH ECONOMY CONTROL Heater cable 50ft cold leads to be taken through Installer may use more J-boxes outside or inside building. Inside HEATER CABLE / MAT #1 208V CIRCUITS 208V CIRCUITS 208V 208V HEATER CABLE / MAT #2 J-BOX 208V 120/208 VAC BREAKER PANEL Outside 3/4” (19mm) rigid metal conduit back to J-boxes.
APPENDIX L: SNOW MELT DIAGRAM 240V - TYPICAL LINE DIAGRAM (FOR 6 CIRCUITS/CABLES) WITH MANUAL CONTROL Installer may use more J-boxes outside or inside building. inside Heater cable 20ft cold leads to be taken through 3/4” (19mm) rigid metal conduit back to J-boxes.
APPENDIX M: SNOW MELT DIAGRAM 277V - TYPICAL LINE DIAGRAM (FOR 12 CIRCUITS/CABLES) WITH MANUAL CONTROL Heater cable 50ft cold leads to be taken through 3/4” (19mm) rigid metal conduit back to J-boxes. Installer may use more J-boxes outside or inside building.
APPENDIX N: SNOW MELT DIAGRAM 208V - TYPICAL LINE DIAGRAM (FOR 6 CIRCUITS/CABLES) WITH MANUAL CONTROL Installer may use more J-boxes outside or inside building. inside Heater cable 50ft cold leads to be taken through 3/4” (19mm) rigid metal conduit back to J-boxes.
APPENDIX O: SNOW MELT DIAGRAM 240V - TYPICAL LINE DIAGRAM (FOR 6 CIRCUITS/CABLES) WITH SCA-DUAL Heater cable 20ft cold leads to be taken through 3/4” (19mm) rigid metal conduit back to J-boxes. Installer may use more J-boxes outside or inside building.
APPENDIX P: SNOW MELT DIAGRAM 277V - TYPICAL LINE DIAGRAM (FOR 12 CIRCUITS/CABLES) WITH SCA-DUAL Heater cable 50ft cold leads to be taken through 3/4” (19mm) rigid metal conduit back to J-boxes. Installer may use more J-boxes outside or inside building.
APPENDIX Q: SNOW MELT DIAGRAM 208V - TYPICAL LINE DIAGRAM (FOR 6 CIRCUITS/CABLES) WITH SCA-DUAL Heater cable 50ft cold leads to be taken through 3/4” (19mm) rigid metal conduit back to J-boxes. Installer may use more J-boxes outside or inside building.
APPENDIX R: SNOW MELTING DIAGRAM: 240V - TYPICAL LINE DIAGRAM (FOR 3 CIRCUITS/CABLES) WITH SCV-DUAL WITHOUT RELAY Designed to be mounted using either 3/4" or 1" PVC conduit, supplied by customer. inside L1 120/240 VAC BREAKER PANEL outside Heater cable 20ft cold leads to be taken through 3/4” (19mm) rigid metal conduit back to J-boxes.
APPENDIX S: SNOW MELTING DIAGRAM: 208V - TYPICAL LINE DIAGRAM (FOR 3 CIRCUITS/CABLES) WITH SCV-DUAL WITHOUT RELAY Designed to be mounted using either 3/4" or 1" PVC conduit, supplied by customer. inside L1 120/240 VAC or 120/208 VAC BREAKER PANEL outside Heater cable 20ft (120V and 240V) and 50ft (208V) cold leads to be taken through 3/4” (19mm) rigid metal conduit back to J-boxes.
APPENDIX T: SNOW MELTING DIAGRAM: TYPICAL LINE DIAGRAM (FOR 6 CIRCUITS/CABLES) WITH SCV-DUAL WITH RELAY Heater cable 20ft cold leads to be taken through 3/4” (19mm) rigid metal conduit back to J-boxes.
APPENDIX U: SNOW MELTING DIAGRAM: TYPICAL LINE DIAGRAM (FOR 12 CIRCUITS/CABLES) WITH SCV-DUAL WITH RELAY Installation Support • No Nonsense™ Warranty • (800) 875-5285 • www.WarmlyYours.com Heater cable 50ft cold leads to be taken through 3/4” (19mm) rigid metal conduit back to J-boxes. Installer may use more J-boxes outside or inside building.
APPENDIX V: SNOW MELTING DIAGRAM: TYPICAL LINE DIAGRAM (FOR 6 CIRCUITS/CABLES) WITH SCV-DUAL WITH RELAY Installation Support • No Nonsense™ Warranty • (800) 875-5285 • www.WarmlyYours.com Heater cable 50ft cold leads to be taken through 3/4” (19mm) rigid metal conduit back to J-boxes.
8”-12” crushed rock aggregate 5” sand, stone APPENDIX W: ust or mortar Control joint EXPANSION AND CONTROL JOINT CROSS SECTION lastic tie wrap Concrete Right 8”-12” crushed Expansion joint rock aggregate Control joint Concrete Wrong hot/cold cold joints installed stalle on slab edge cold 3” hot/cold bunche unche 3” Concrete Heating cable secured to rebar with plastic tie wraps ic tie wrap it Wrong hot/cold joints 6 in (15 cm) apart and 6 in (15 cm) from slab edge 3” 3” Steel bar 3” Expan
APPENDIX X: SNOW MELTING DIAGRAM: JUNCTION BOX MOUNTING Installation Support • No Nonsense™ Warranty • (800) 875-5285 • www.WarmlyYours.com Concrete wall Junction box mounted on inside wall Cable identification tag (within 3 in (7.
Snow Melting Troubleshooting Guide SYSTEM NOT MELTING SNOW NO POWER TO HEATING PRODUCT 1. Do an amp draw test on the cables to verify proper operation. 1. T est ohms of heating cables/rolls 2. What is the ambient air temperature? a. V erify proper ohms per roll/cable a. In sub-zero temperatures it is simply too cold to make operation practical. The system may run all day and night and not melt any snow at 17 degrees or less.
Snow Melting Troubleshooting Guide MEGA-OHM INSULATION READINGS LOWER THAN SPEC b. I nspect installation area. Has any work been done in area by trade personnel? Is there visible damage to the concrete, slab, or pavers? c. Use troubleshooting kit and thermal camera to locate damage d. Repair damaged area of lead e. Replace damaged heating product 1. Rain or high humidity present a. Dry wires at test point b. Check for water ingress at junction boxes c. Dry connections and re-test. 2.
WarmlyYours Snow Melting Warranty WarmlyYours, Inc.
WarmlyYours Snow Melt Warranty Registration Thank you for purchasing your new WarmlyYours Snow Melting System. Once the report form is completed, please copy the form and attach a copy to the main breaker box, or give to the homeowner or business owner. Please send a copy to WarmlyYours via mail, FAX at (800) 408-1100, or scan and send via e-mail to: sales@warmlyyours.com.
