家用电热水器应该是由美国人热水器公司制造的低矮型，型号为 ____________________________ ，或者经过认可的等价品。对于安装在家庭住宅内的热水器而言，其内胆质量保证年限为 ________ 年，配件质量保证年限为 ________ 年。对于安装在商用应用领域的热水器，则内胆质量保证期为1年，配件质量保证期为1年。 　　
　　Residential electric water heater(s) shall be Lowboy model ____________________________ as manufactured by American Water Heater Company, or an approved equal and shall have a ________ -year tank warranty and a ________ -year parts warranty, when installed in a residential application. When installed in a commercial application, the unit will have a 1-year tank warranty and a 1-year parts warranty.
　　热水器容积应该是 ________ 公升，供应电源应该是 ________ 伏，________ 相，________ 赫兹，________ 千瓦，并且经过美国保险商实验室标准UL 174的鉴定、检测和通过。这种热水器应该符合或优于1987年美国联邦《美国国家电器节能法典》(NAECA)和美国采暖、制冷与空调工程师学会(ASHARE)90.1b-1992标准的有关要求。
　　Heater(s) shall have a storage capacity of ________ gallons and shall have a rated input of ________ KW at 240 volts, single phase, 60 cycle AC and shall be design certified, tested and listed in accordance with Underwriter's Laboratories standard UL 174. Heaters shall meet or exceed the requirements of the Federal "National Appliance Energy Conservation Act (NAECA)of 1987" and shall comply with ASHRAE Standard 90.1b-1992..
　　热水器容器内胆应该是Fused Ceramic Shield^TM（熔融陶瓷盾板）内胆，在871^oC高温下熔融结合，形成耐腐蚀的内胆；聚合物材料制成的内胆是不能接受的。每个内胆都应该配置一体化的阳极以提供阳极保护。
　　The interior of the storage tank shall be lined with a Fused Ceramic Shield^TM lining, fused to the steel at 1600^oF forming a corrosion-resistant lining; polymer linings are not acceptable. Each tank shall be furnished with an internal anode for anodic protection.
　　这种热水器应该配置一个内置的电气接线盒。电气加热元件应该螺纹拧进的，直接浸入式，电阻型加热元件。每个加热元件的工作应该由一个温控器控制调节。
　　The unit shall be equipped with a built-in electrical junction box. Electrical heating elements shall be screw-in, direct-immersion, resistance-type. Element operation shall be controlled by a thermostat for each element.
　　高温关闭功能应该作为热水器的整体之一加以配置。对于每个加热元件，应该在热水器前部设置加热元件观察（检测）孔。每台热水器前部应该配置一个耐腐蚀的排污阀。应该采用金属外壳将热水器内胆完全包裹起来，并配置非氯氟烃泡沫加以绝缘隔热，以减少热量损失。内胆应该通过300 PSI试验压力和150 PSI工作压力检测并获得认证。
　　A high temperature cutoff shall be supplied as an integral part of the heater. Element access panels shall be provided on the front of the heater for each element. A corrosion-resistant drain valve shall be provided on the front of each unit. The tank shall be totally encased in a metal jacket and insulated with a non-CFC foam to reduce stand-by heat loss. The tank must be design certified for 300 PSI test pressure and 150 PSI working pressure.