Instant hot water. at every fixture. with no recirculation. HWAT-P1 Heating Cable 120-Volt HWAT-Plus System Application and Design

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1 Instant hot water at every fixture with no recirculation HWAT-P1 Heating Cable 120-Volt HWAT-Plus System Application and Design

2 The Simplest Way to Provide Instant Hot Water The HWAT-P1 heating cable system dramatically cuts the waiting period or time-to-tap for hot water at low-flow fixtures, saving time and money compared to recirculation or a point-of-use water heater. For example, a low-flow fixture fed by a 20-foot branch run of 3/4-inch pipe takes 56 seconds to get hot. That s a long time to wait and a lot of wasted water down the drain. One option is to recirculate the branch to each fixture a balancing nightmare. A better approach is to install aychem s HWAT-Plus self-regulating heating cable directly on the supply piping. The heating cable can be run as close to the fixture as required, reducing the waiting time for hot water. And since the HWAT-Plus system is simple to install and operate, no maintenance is required. HWAT-P1 system advantages Instant hot water Lower installed cost than recirculation or point-ofuse systems Forty-year design life with no maintenance or system balancing

3 Application equirements The requirements below will help you verify that HWAT-P1 is appropriate for the application. Water Temperature Applications Pipe Material Ambient Temperature (near pipe location) 125 F nominal Indoor hot water piping where hot and cold water are mixed to achieve desired temperature. Typical applications Copper (1/2" 2") 70 F 78 F (21 C 26 C) include buildings such as offices, hotels, residences, and apartments. Voltage Electrical Code equirements 120 Vac aychem and the 1996 National Electrical Code Section 427 require ground-fault equipment protection on each heating cable branch circuit. To reduce the risk of fire caused by damage or improper installation, use circuit breakers such as Square D QO- EPD and QOB-EPD or equivalent, with a 30-mA trip level. Alternative designs providing comparable levels of groundfault protection may also be acceptable. Other Applications The HWAT-Plus system as outlined in this brochure is not intended for applications where: Heating cable is run through an unheated area, such as a crawl space or uninsulated attic. Where a building code requires a maximum temperature of 110 F or 120 F. If your application conditions are other than those listed above, contact a aychem representative or call aychem direct. United States or Canada (800) Technical assistance (415) 361-HELP Approvals UL, CSA, and FM BOCA ICC Southern Building Code Congress Uniform Plumbing Code National Electrical Code Additionally, the HWAT-P1 system is approved by numerous other state and local codes. Contact your aychem representative for more information.

4 ayclic WANING: SHOCK HAZAD Do not open while energized 3 1/8" LISTED DESIG. 3A, 3B, 3C, 2E WANING: SHOCK HAZAD Do not open while energized 3 1/8" LISTED DESIG. 3A, 3B, 3C, 2E System Components and Accessories The HWAT-P1 system consists of heating cable and ayclic components. ayclic components include power connection, tee, splice, and end-seal kits. Accessories include glass tape and Electric Traced labels. HWAT cable is cut to length in the field and tees may be used to accommodate pipe branches. Plumbers and electricians can install aychem s innovative ayclic connections in a fraction of the time required for terminal block or crimptype connections thus dramatically lowering the total installed cost of the system. For a complete list of components consult the ayclic Data Sheet (H55234). 3 ayclic 3 1/8" LISTED DESIG. 3A, 3B, 3C, 2E WANING: SHOCK HAZAD Do not open while energized ELECTIC TACED 6 1 HWAT-P1 heating cable attached with GT-66 glass tape. 2 ayclic-pc power connection. 1 2 ayclic 3 ayclic-t heating cable tee 4 ayclic-s heating cable splice

5 HWAT-P1 Design Steps Verify that your application requirements are appropriate for HWAT-P1, then follow these design steps. 5 A. Identify and measure each circuit, staying within the maximum circuit length. Circuit Breaker Size* Maximum circuit length (ft) 4 30A A A 250 *Use a 30-mA ground-fault circuit breaker for each circuit. B. Supply proper insulation material and thickness. Pipe Size Insulation Thickness 1/2" 1 1/2" 1/2" 2" 1" Use only fiberglass or PVC foam insulation. For pipe sizes of 1 1/4 inch and smaller use insulation sized for 1/4-inch larger pipe. Using different insulation types and thicknesses will affect water temperature. C. Use Design Table on back page to select required components and to develop bill of materials. 5 ayclic-e end seal. Installation For system installation, testing, and commissioning, the HWAT- Plus Installation and Operation Manual (H53192) must be used. Although HWAT-P1 is not specifically mentioned, follow all steps of system testing, operation, and installation outlined in sections 1 5. If you need assistance or a copy of the operation manual, call aychem. 6 ETL electric traced label.

6 Design Table Select required components and develop bill of materials. Verify number of circuits required from Step A after allowances are added. Component Usage Heater Allowance* HWAT-P1 Heating Cable Length of hot water pipe to be traced plus allowances ayclic-pc Power Connection One per circuit 2 ft (0.6 m) (includes 1 end seal) ayclic-t Tee Connection As required for pipe branches 3 ft (1.0 m) (includes 1 end seal) ayclic-s Splice Connection As required 2 ft (0.6 m) ayclic-e End Seal Included in power and tee kits. Also sold separately. GT-66 Glass Tape Used to attach heating cable every 2 feet. One roll will handle approximately 50 ft (15 m) of pipe. Electric Traced Label Placed on alternating sides of insulation. One label for every 10 ft (3 m) of pipe. *For ease of component installation, allow extra heating cable as shown. W E A N Y A E N A T T Y aychem Corporation Commercial & Industrial Infrastructure Division 300 Constitution Drive Menlo Park, CA Tel (800) Fax (800) Fax-on-Demand (800) ciinfo@raychem.com aychem S.A.I.C. Carlos Pellegrini 1363, Pisco Capital Federal Buenos Aires, Argentina Tel (54) 1/ Fax (54) 1/ aychem Canada Ltd Airport oad, Suite 101 Mississauga, Ontario Canada L4V 18 Tel (800) Fax (650) ISO 9001 All information, including illustrations, is believed to be reliable. Users, however, should independently evaluate the suitability of each product for their application. aychem makes no warranties as to the accuracy or completeness of the information, and disclaims any liability regarding its use. aychem s only obligations are those in the aychem Standard Terms and Conditions of Sale for this product, and in no case will aychem be liable for any incidental, indirect, or consequential damages arising from the sale, resale, use, or misuse of the product. Specifications are subject to change without notice. In addition, aychem reserves the right to make changes without notification to Buyer to materials or processing that do not affect compliance with any applicable specification. HWAT, HWAT-P1, HWAT-Plus and ayclic are trademarks of aychem Corporation aychem Corporation Printed in USA (Y3 2926) H /96