EXECUTION HEAT TAPE (FREEZE PROTECTION) Provide heat trace on all piping in unheated spaces to prevent freezing. Install cable in a straight run(s) and without heat transfer aids. Install in accordance with the instructions and recommendations and with the NEC. manufacturer’s Heating installation shall include allowances for valves, flanges and other heat sinks based on the recommendations. manufacturer’s All circuits shall be protected with 30mA ground fault interruption devices. Before and after installing thermal insulation, the heater shall be meggered at 500-2500 VDC. Minimum insulation resistance is 20 megohms regardless of heater length. Install heat trace cable on pipes indicated to maintain a minimum of 35ºF at pipe surface in an ambient temperature of 0ºF. Lay cable parallel on pipe or spiral wrap to maintain adequate temperature as required by pipe size and thermal properties of the pipe insulation to be applied. Attach heat trace cable to pipe with polyester tape at maximum 1foot increments. Install thermostat capillary and bulb to pipe with polyester tape assuring a firm bulb contact with pipe. Bulb shall not be in contact with heat cable. Install thermostat at accessible location adjacent to pipe with a minimum of exposed capillary. Tape capillary to pipe run under insulation to bulb. Coordinate installation with work specified in Division 26 for adequate electrical service to each thermostat. Affix an to the outside of the thermal insulation on alternating sides “Electric Traced” label pipe’s at intervals of 5 to 15 feet immediately after the piping has been insulated. Choose the Commissioning or Testing article. Use Commissioning if Section 019100 is included in the project manual; use Testing. COMMISSIONING Commission the following items: Heat trace cables and accessories.
EXECUTION HEAT TAPE (FREEZE PROTECTION) Provide heat trace on all piping in unheated spaces to prevent freezing. Install cable in a straight run(s) and without heat transfer aids. Install in accordance with the manufacturer’s instructions and recommendations and with the NEC. Heating installation shall include allowances for valves, flanges and other heat sinks based on the manufacturer’s recommendations. All circuits shall be protected with 30mA ground fault interruption devices. Before and after installing thermal insulation, the heater shall be meggered at 500-2500 VDC. Minimum insulation resistance is 20 megohms regardless of heater length. Install heat trace cable on pipes indicated to maintain a minimum of 35ºF at pipe surface in an ambient temperature of 0ºF. Lay cable parallel on pipe or spiral wrap to maintain adequate temperature as required by pipe size and thermal properties of the pipe insulation to be applied. Attach heat trace cable to pipe with polyester tape at maximum 1foot increments. Install thermostat capillary and bulb to pipe with polyester tape assuring a firm bulb contact with pipe. Bulb shall not be in contact with heat cable. Install thermostat at accessible location adjacent to pipe with a minimum of exposed capillary. Tape capillary to pipe run under insulation to bulb. Coordinate installation with work specified in Division 26 for adequate electrical service to each thermostat. Affix an “Electric Traced” label to the outside of the pipe’s thermal insulation on alternating sides at intervals of 5 to 15 feet immediately after the piping has been insulated. Choose the Commissioning or Testing article. Use Commissioning if Section 019100 is included in the project manual; use Testing. COMMISSIONING Commission the following items: Heat trace cables and accessories.
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