Williamson has launched its new FreeStyle® 155k Btuh input Wall Mount Gas-Fired Condensing Boiler. The FS-155 has an AFUE of 94.4% and is available in combi and heat only models. The FS-155 combi unit provides 4GPM of domestic hot water. The FS-155 joins Williamson’s current 80k and 120k Btuh input units. All FreeStyle models are available in combi and heat only versions.
RAE Coils announced that it is manufacturing replacement and OEM evaporative condensing tube bundles. The tube bundles are a critical component of the highly efficient condensing units originally manufactured by Mammoth’s Ultraline and Penthouse brands. When compared with air cooled technology, the company says this product can result in a reduction of up to 35% in annual operating costs.
Laars has introduced the new Mascot ST condensing tankless water heater. The natural gas or LP-fired unit offers an ultra-high 0.96 EF (energy factor) efficient stainless steel heat exchanger, full 10:1 modulation, and is available in a 199 MBH size.
Bosch Thermotechnology has expanded its Buderus brand GB162 gas condensing boiler offering. The company claims by combining condensing and cascade technologies together in one compact design provides ultra-high performance efficiencies (up to 93% AFUE) with the ability to fit multiple boiler units into tight spaces.
RBI has introduced the latest edition to its ultra-high efficiency condensing boilers and water heaters. The Infinite Energy2 (IE2) utilizes a state-of-the-art Radial Variable Circulation (RVC) stainless steel heat exchanger for maximum heat transfer and operating efficiencies of up to 98%.
Navien’s new NPE-S series condensing tankless water heaters have a rated efficiency of 0.98EF. The company claims the series is ideal for commercial and residential water heating applications and is available in three models with maximum inputs from 150,000 to 199,900 Btuh and maximum flow rates from 8.4 to 11.1 gpm.
Harsco Industrial Patterson-Kelley has launched the P-K SONIC™ boiler with Duet™ technology. The company claims the P-K Sonic boiler is the first practical stainless steel design for condensing applications in the industry.
Why was one floor’s laboratory ventilation failing to keep up, when it was even the closest floor to the rooftop fans? Some system sleuthing led two engineers to a fitting conclusion. Read more stories in May Issue 2017.