The NRCP line of residential tankless water heaters from Noritz combines condensing technology with hot-water recirculation. The NRCP98-DV and the NRCP1112-DV have an Energy Factor of 0.95 for both natural gas and LP gas. Each unit delivers water from 100° F to 140°, with a minimum flow rate for activation of 0.5 gpm.
Using a 1/2” gas line, up to 120’ in length, both can be vented with PVC or CPVC pipe. The maximum loop run from the tankless unit is 200’ for 1/2” pipe; 500’ for 3/4” pipe. Measuring 17.3” wide x 27.6” high x 14.8” deep, both units are equipped with a gas leak detector and a water leakage cutoff.
Noritz residential tankless water heater with recirculation
![Noritz NCRP tankless water heater with recirculation](http://www.pmmag.com/ext/resources/radianthydronics/RH/2016/April/RH0416_Noritz-NCRP.jpg?1459462368)
Source: Noritz