The TTS Synergy Series features a turndown ratio of 66:1 that will provide more than 1,600 gallons of hot water per hour, yet is compact enough to fit through a standard mechanical room doorway, the company says. TTS systems are pre-engineered and prefabricated to install quickly and without complications, minimizing costly downtime for commercial operators. The standard package consists of an aluminum frame rack holding from two to six Noritz NCC199CDV Commercial Condensing Water Heaters with maximum inputs of 199,900 Btu/h and maximum flow rates of 11.1 gpm.