Interior spaces intended for human occupancy shall be provided with active or passive space heating systems capable of maintaining an indoor temperature of not less than 68°F (20°C) at a point 3 feet (914 mm) above the floor on the design heating day.
Exceptions:
Space heating systems are not required for:
- Interior spaces where the primary purpose of the space is not associated with human comfort.
- Group F, H, S or U occupancies.