VA245-17-B-0086-A00006003.pdf

VA Huntington March 15, 2017 Install Back-Up Generator 1 00% Construction Documents Huntington, WV 25704 Project No. 581-16-101

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SECTION 22 05 33

HEAT TRACING FOR PLUMBING PIPING

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section describes the requirement for supplyin g, installing, and testing of the electric heat tracing system of the plumbing piping.

Freeze protection shall be utilized for storm water piping in areas subject to freezing temperatures.

B. A complete listing of all acronyms and abbreviation s are included in

Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING.

1.2 RELATED WORK

A. Section 01 00 00, GENERAL REQUIREMENTS.

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

C. Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING .

D. Section 22 07 11, PLUMBING INSULATION.

E. Section 26 05 19, LOW VOLTAGE ELECTRICAL POWER CON DUCTORS AND CABLES.

1.3 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this s pecification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. The Institute of Electrical and Electronic Engineer s (IEEE):

515.1-2012 Standard for the Testing, Design, Installation, and Maintenance of Electrical

Resistance Trace Heating for Commercial

Applications

C. International Code Council, (ICC):

IPC-2015 International Plumbing Code

D. National Fire Protection Association (NFPA):

70–2011 National Electrical Code (NEC)

E. Underwriters' Laboratories, Inc. (UL):

508-99 (R2013) Standard for Industrial

Control Equipment

1.4 SUBMITTALS

A. Submittals, including number of required copies, sh all be submitted in accordance with Section 01 33 23, SHOP DRAWINGS, PR ODUCT DATA, and

SAMPLES.

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B. Information and material submitted under this secti on shall be marked

“SUBMITTED UNDER SECTION 22 05 33, HEAT TRACING FOR PLUMBING PIPING”,

with applicable paragraph identification.

C. Manufacturer's Literature and Data including: Full item description and optional features and accessories. Include dimensio ns, weights, materials, applications, standard compliance, model numbers, size, and capacity.

1. Rated capacity.

2. Length of cable.

3. Cable spacing.

4. Electrical power requirements.

5. Controls.

6. Enclosures.

7. Accessories.

D. The shop drawings shall include plans, sections, de tails, wiring diagrams, and attachments to other work. The wiring diagrams shall include power, signal, and control wiring.

E. Field quality control test reports shall be submitt ed.

F. Operation and Maintenance data in accordance with a rticle 1.6.

1.5 QUALITY ASSURANCE

A. Manufacturer Qualifications: Ten years’ experience in design, engineering, manufacture and support of specified s ystem and components.

B. Product Requirements:

1. Pipe or tank tracing cable assembly shall be factor y assembled, immersed in water for a minimum of 12 hours, and th en tested for insulation resistance, high potential breakdown and continuity before leaving the factory.

2. Factory Mutual approved heating cable that has the same wattage per lineal foot (power output), throughout its entire l ength.

3. UL Listed, thermostat and contactor panel.

4. UL Listed Control/Monitor Panel.

C. Electrical Components, Devices, and Accessories: Li sted and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

D. Bio-Based Materials: For products designated by the USDA’s Bio-

Preferred Program, provide products that meet or ex ceed USDA

22 05 33 - 3 recommendations for bio-based content, so long as p roducts meet all performance requirements in this specifications sec tion. For more information regarding the product categories covere d by the Bio-

Preferred Program, visit http://www.biopreferred.gov .

1.6 AS-BUILT DOCUMENTATION

A. Submit manufacturer’s literature and data updated t o include submittal review comments, construction revisions and any equ ipment substitutions.

B. Submit operation and maintenance data updated to in clude submittal review comments shall be inserted into a three-ring binder. All aspects of system operation and maintenance procedures, inc luding piping isometrics, wiring diagrams of all circuits, a writ ten description of system design, control logic, and sequence of opera tion shall be included in the operation and maintenance manual. T he operations and maintenance manual shall include troubleshooting te chniques and procedures for emergency situations. Notes on all s pecial systems or devices such as damper and door closure interlocks shall be included. A

List of recommended spare parts (manufacturer, mode l number, and quantity) shall be furnished. Information explainin g any special knowledge or tools the owner shall be required to e mploy shall be inserted into the As-Built documentation.

PART 2 - PRODUCTS

2.1 SELF-REGULATING PARALLEL RESISTANCE HEATING CABLES

A. Self-regulating parallel resistance heating cables shall comply with

IEEE 515.1.

B. The heating element shall be a pair of parallel No. 16 AWG tinned or nickel coated stranded copper bus wires embedded in cross linked conductive polymer core, which varies heat output i n response to temperature along its length. Cables shall be termi nated with waterproof, factory assembled non-heating leads wit h connects at one and seal the opposite end watertight. The cable sha ll be capable of crossing over itself without overheating.

C. The electrical insulating jacket shall be flame-ret ardant polyolefin.

D. The cable cover shall be tinned copper or stainless steel braid and polyolefin outer jacket with UV inhibitor.

E. The maximum power on operating temperature shall be 100 degrees F (38 degrees C).

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F. The maximum power off exposure temperature shall be 185 degrees F (85 degrees C).

G. The capacities and characteristics shall be:

1. Maximum heat output 10 W/foot (32.8 W/m) .

2. Pipe Diameter: 4” and 6”.

3. Number of parallel cables: 1 cable on bottom center .

4. Spiral wrap pitch: not applicable.

5. Volts: 120.

6. Phase: single.

7. Hertz: 60.

8. Full load amps: two circuits at 7.4 FLA each.

9. Minimum circuit ampacity: two circuits at 9.3 FLA e ach.

10. Maximum over current Protection: 20 A.

2.2 CONTROLS

A. Pipe mounting thermostats for Freeze protection sha ll have be a remote bulb unit with adjustable temperature range from mi nus 34 to 50 degrees

F (1 to 10 degrees C). The thermostat shall be snap action, open-on-rise, single pole switch with minimum current ratin g adequate for the connected cable. The thermostat shall be remote bul b on capillary, resistance temperature device, or thermistor for di rect sensing of pipe wall temperature. The control enclosure shall be co rrosion resistant and waterproof.

B. The enclosure shall be the NEMA 4X type.

2.3 ACCESSORIES

A. Cable Installation Accessories: Fiberglass tape, he at-conductive putty, cable ties, silicone end seals and splice kits, and installation clips all furnished by manufacturer, or as recommended in writing by manufacturer.

B. Warning Labels: Shall comply with NFPA 70.

C. Warning Tape: Continuously printed "Electrical Trac ing"; vinyl, at least 3 mils (0.08 mm) thick, and with pressure-sen sitive, permanent, waterproof, self-adhesive back.

1. Width for Markers on Pipes with Outside Dimension, Including

Insulation, and Less Than 6 inches (150 mm): 3/4 in ch (19 mm) minimum.

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2. Width for Markers on Pipes with Outside Dimension, Including

Insulation, 6 inches (150 mm) or Larger: 1-1/2 inch es (38 mm) minimum.

PART 3 - EXECUTION

3.1 GENERAL

A. Inspect surfaces and substrates of electric heating cables for compliance with requirements of this specification. Ensure surfaces and pipes in contact with electric heating cables are f ree of burrs and sharp protrusions.

B. Notify COR if the existing substrate conditions are unsuitable for application of heating cables in accordance with ma nufacturer’s recommendations.

C. If the installation of the heat tracing is unsatisf actory, then the

Contractor shall correct the installation at no cos t to the Government.

3.2 INSTALLATION

A. Electric heating cable shall be installed for the f ollowing applications:

1. Freeze protection of plumbing piping: Self-regulat ing parallel-resistance heating cable.

B. Electric heating cable shall be installed across ex pansion, construction, and control joints according to the m anufacturer’s recommendations using cable protection conduit and slack cable to allow for movement without damage to cable.

C. Electric heating cable for pipe freeze protection s hall be installed according to the following:

1. Electric heating cables shall be installed after pi ping has been tested and before insulation is installed.

2. Electric heat cables shall be installed according t o IEEE 515.1

3. Insulation shall be installed or applied over pipin g with electric cables. Refer to Section 22 07 11, PLUMBING INSULAT ION.

4. Warning tape shall be installed on pipe insulation where piping is equipped with electric heating cables.

D. Field adjustable switches and circuit breaker trip ranges shall be set.

E. Heating cables including leads shall be protected f rom damage.

F. Equipment shall be grounded according to Section 26 05 19, LOW VOLTAGE

ELECTRICAL POWER CONDUCTORS AND CABLES.

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G. Wiring shall be connected according to Section 26 0 5 19, LOW VOLTAGE

ELECTRICAL POWER CONDUCTORS AND CABLES.

3.3 TESTS

A. Manufacturer's Field Service: Engage a factory-auth orized service representative to test and inspect components, asse mblies, and equipment installations, including connections.

B. Perform the following tests and inspections:

1. Perform tests after cable installation but before a pplication of coverings such as insulation, wall or ceiling const ruction, or concrete.

2. Test cables for electrical continuity and insulatio n integrity before energizing.

3. Test cables to verify rating and power input. Energ ize and measure voltage and current simultaneously.

C. Repeat tests for continuity, insulation resistance, and input power after applying thermal insulation on pipe-mounted c ables.

D. If deficiency is found, Contractor shall correct al l deficiencies at no cost to the Government.

E. Prepare test and inspection reports.

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