Noritz 10.1 GPM Residential Built-In Recirc. Pump - Indoor Direct Vent Liquid Propane Tankless Water Heater Max 180,000 BTUH

Noritz NRCP series heaters offer the latest cutting-edge technology in tankless water heaters. The latest NRCP models feature a crossover valve functionality, which allows for an external recirculation without the use of a return line. It also features an internal pump that can be used in 2 different modes. External mode, combined with a return line, can keep the water in the pipes warm resulting in lower wait times for hot water. Internal mode, which does not require a return line, will keep the water within the unit warm to reduce the traditional delay between water demand and the startup sequence. This unit is equipped with a heavy duty 304° stainless steel heat exchanger for superior thermal transfer as well as excellent resistance to scale formation. NRCPs can be vented using 2-schedule 40 PVC pipe and operate with as little as 3.5 water column on the incoming gas line.