DISCONTINUE_SERVICE
DISCONTINUE_SERVICE: "D"
DO_NOT_HEAT
DO_NOT_HEAT: "HDN"
DO_NOT_HEAT_CANADA
DO_NOT_HEAT_CANADA: "HDNC"
DO_NOT_OPERATE
DO_NOT_OPERATE: "MNU"
MECHANICAL
MECHANICAL: "M"
MODIFIED_MECHANICAL
MODIFIED_MECHANICAL: "MN"
STANDARD_HEAT_CANADA
STANDARD_HEAT_CANADA: "HSC"