13.2 Installation of solar assisted water heating (SWH) system /

ROOF TOP PHOTOVOLTAIC (RTPV) SYSTEM SWH or RTPV systems shall be mandatory in all types of buildings to be constructed on plot area of more than 4000 sq.m. In order to facilitate the installation of SWH / RTPV System, the new buildings shall have the following provisions :-

i) All such buildings where SWH / RTPV are to be installed will have open sunny roof area available for the installation of SWH / RTPV.

ii) The roof loading adopted in the design of such building should be at least 50 kg. Per sq.m. for the installation of SWH / RTPV.

iii) At least 25% of the roof area shall be utilized for installation of the SWH / RTPV system.

iv) Precaution should be taken that architectural elevation treatment should not cast shadow on terrace space. As far as possible, parapet of south, east and west sides of the terrace shall be of railing type (above 1 feet) such that it will not cast shadow on the solar collectors and maximum terrace space can be utilized.

v) All such new buildings installed with SWH shall have an installed hot water line from the rooftop and insulated distribution pipelines to each of the points where hot water is required in the building.