(1) A noncombustible lining or backing shall be provided for every steam or hot water radiator and convector,
(a) located in a recess or concealed space, or
(b) attached to the face of a wall of combustible construction or encapsulated mass timber construction.
(2) Every steam or hot water radiator and convector shall be installed to conform to the clearance requirements of Table 6.2.9.3.