The scope of permission granted to service and install various types of oil and solid fuel burning equipment to each license category, e.g., 1 and 2 oils over 15 gph, 1 and 2 oils over 15 gph/solid fuel, 1 and 2 oils up to 15 gph, 1 and 2 oils up to 15 gph/solid fuel, 1-6 oils, 1-6 oils/solid fuel, 4-6 oils, 4-6 oils/solid fuel.
02-658 C.M.R. ch. 101, § 12