Special Advertising Section Special Advertising Section New BULLeT™ VacUUm PUmP from YeLLow JacKeT® VerSaTILe GaS & aIr PreSSUre SwITcHeS! The 7 CFM BULLET provides superior performance at an affordable price. It features a two-stage, rotary vane design that pulls a deep vacuum down to 25 microns or better. Other built-in features include: wide mouth oil reservoir port threaded to attach a garden hose for pump exhaust; large oil sight glass; large brass oil drain for easy access to fast oil changes; internal intake check valve to prevents oil backup into the system during a power failure, ½ HP heavy-duty motor with steel handle and lift hook, 24-month limited over-the-counter warranty and made in USA. YELLOW JACKET® Products Division of Ritchie Engineering Company, Inc. www.yellowjacket.com/catalog or 800-769-8370 www.info.hotims.com/30921-76 Count on the Versa Series from Antunes Controls to provide accurate, durable, and cost-effective gas and air pressure switches. The integrated contacts and omega spring design provide repeatability and accuracy. Select from various mounting configurations. Take advantage of the Versa Series and know you have a trusted leader in switch manufacturing since 1961. Whatever your switch needs, we have the versatile solution. For more information call 877.392.7857 or visit www.ajantunes. com. Antunes Controls www.ajantunes.com Toll Free: 877-392-7857 www.info.hotims.com/30921-77 Low Nox coNdeNSING BoILer from aerco BUILdING oPeraTING maNaGemeNT AERCO’s 2 million Btu/hr Benchmark low NOx condensing boiler has reduced its footprint (79 in. H x 28 in. W x 36 in. D), electrical consumption (120 v) and gas pressure requirements (4 in.) while maintaining unmatched 20:1 turndown to maximize fuel savings. Engineers and contractors can employ the environmentally friendly, high-efficiency boiler in a wider variety of hydronic heating applications due to the new design. www.info.hotims.com/30921-78 www.info.hotims.com/30921-79 November 2010 ASHRAE Journal 69