Section 701B.290 - Eligible contractors: Installation of solar thermal system that uses solar energy to heat waterWhen installing a solar thermal system that uses solar energy to heat water, an eligible contractor:
1. Except as otherwise provided in subsection 2, shall use a two-tank system, where a new tank is dedicated to storing water heated by solar panels and the customer's existing tank is used to heat water with natural gas.2. In a retrofit application, may use just a customer's existing tank in combination with an external heat exchanger if:(a) The existing tank is still under warranty or is less than 3 years old;(b) The application includes the stamp or seal of a professional engineer, the signature of the engineer attesting to the expected performance and sound design of the solar thermal system, the date of signing and the date of expiration of the license of the engineer; and(c) The customer is provided with a written disclosure consisting of an estimate of the efficiency of a one-tank system with an external heat exchanger compared to an estimate of the efficiency of a two-tank system, all other variables being the same or reasonably similar.Nev. Admin. Code § 701B.290
Added to NAC by Pub. Utilities Comm'n by R210-09, eff. 4-20-2010NRS 701B.336, 701B.342, 703.025