PROJECT hvac maintenance and gives the ability to bypass certain system components in case of failure. Some design considerations for tank loading include: * Ensure flow through each water heater is between 3.5 and 5.0 gpm. * Isolation valves or boiler drains should be installed to facilitate descaling in applications with hard water. * Whenever possible, plumb the system or configure the tank to draw cold supply water into the water heater during hot water use. These condensing units capture latent heat from condensation of the exhaust gas and use it to preheat incoming cold water. Unlike traditional non-condensing water heaters, these condensing units capture latent heat from condensation of the exhaust gas and use it to preheat the incoming cold water, making the water heaters 10% more efficient than traditional tankless water heaters, according to the manufacturer. The building owners are pleased with the performance, energy savings, and flexibility of the water heaters, as well as the fact that not a single day of hot water supply was lost during installation. CA storage tanks, and the upper zone has six C 1210 units and three storage tanks (each storage tank has a 240 gal. capacity). Tankless water heaters are commonly used in residential on-demand applications. However tankless water heaters can be applied in a commercial tank-loading application providing comfort even with variable demand. An advantage of using the Bosch tankless units was that they fit through a standard 30-in. doorway, and they function with the lower gas pressure available in the building. Want more information? The resources below are linked on our website at commercialarchitecturemagazine.com and our digital magazine at commercialarchitecturemagazine.com/digital/apr2017. As many as 24 Bosch C 1210 gas tankless water heaters can be linked together to achieve higher flow rates than with single units-to 290 gpm. The 17-unit cascade used in The Caroline can deliver 205 gpm. Commercial tank-loading design allows complete isolation of the system for CIRCLE 217 Circle 2 on the Reader Service Card. Access a spec sheet for the C 1210-commercialarchitecturemagazine.com/1704bosch01 Download a catalog-commercialarchitecturemagazine.com/1704bosch02 39http://www.commercialarchitecturemagazine.com http://www.commercialarchitecturemagazine.com/digital/apr2017 https://www.cdsreportnow.com/bgs/search?CBP0002201704 http://www.1210-commercialarchitecturemagazine.com/1704bosch01 http://www.catalog-commercialarchitecturemagazine.com/1704bosch02 http://www.boralroof.com http://www.boralroof.com https://www.cdsreportnow.com/bgs/search?CBP0217201704