Heat loss system design and system load calculations for all new installations of a central heating system must be performed prior to installation. The licensee must retain a copy of the heat loss system design and system load calculations such that it may be produced for inspection upon request of a Board inspector.
A heat loss and/or load calculation must be conducted before replacement of a central heating system. The licensee must retain a copy of the heat loss system design or system load calculations, or the stamped plans of an engineered system, such that they may be produced for inspection upon request of a Board inspector.
02-658 C.M.R. ch. 13, § 6