"Fuel gas installation technician" means "fuel gas installation technician" as defined in RSA 153:27, V, namely, "any person engaged in the installation of inside and outside piping from the outlet of the gas meter or first stage regulator or residential and non-residential fuel gas appliances and equipment, including but not limited to heating equipment systems or water heating systems using liquefied propane gas or natural gas."
N.H. Admin. Code § Saf-Mec 102.11