Section 2(xxxi) in Tamil Nadu District Municipalities (Hill Stations) Building Rules, 1993
(xxxi)"Auxiliary back up" means electrically-operated or fuel-fired boilers or systems to heat water coming out from solar water heating system to meet continuous requirement of hot water;] [Inserted by G.O. Ms. No. 112, Municipal Administration and Water Supply Department (MA-1) dated 16th August 2002, published In Tamil Nadu Government Gazette, Part Ill-Section 1(a), dated 11th September 2002.]
