def

ductSection

Equipment section of ductwork

meta

supertypes

marker

Marker labels a dict with typing information

    choice

Choice specifies an exclusive marker selection

subtypes

discharge

Duct for air leaving an equipment

economizer

Duct to access fresh outside air only for economizing, not ventilation

exhaust

Duct used to expel air back outside

flue

Duct for exhausting combustion

inlet

Duct with air entering an equipment

mixed

Duct where fresh outside air and return air is mixed together

outside

Duct to access fresh outside air for both ventilation and economizer

return

Duct returning air back to equipment

ventilation

Duct to access fresh outside air only for ventilation, not economizing