65- 407 C.M.R. ch. 400, § 7
This ventilation requirement is intended to insure that fresh air be supplied and stale air exhausted for each dwelling unit independently of ventilation air and rates in other parts of the building and the building as a whole.
Each dwelling unit shall have balanced mechanical ventilation designed to provide outside air in conformance with ASHRAE 62-1989, "Ventilation for Acceptable Indoor Air Quality". Fresh air is not to be supplied to dwelling units from common rooms. System adjusting shall be completed by an independent testing and balancing agency acceptable to the engineer of record.
Common rooms, located in any building required to comply with this standard, shall have balanced mechanical ventilation designed to provide outside air in conformance with ASHRAE 62-1989.
An operations manual for the ventilation system(s) shall be provided to the building manager. An operations manual for the ventilation system located in the individual dwelling unit shall be provided to each tenant. The operation manual shall provide an overview of how the ventilation system functions to assure indoor air quality, operation instructions for any controls located in the dwelling unit, the name of the person to call for service (may be different for tenants than for managers), and a schedule for any regular maintenance to be performed by the tenant or manager.
65- 407 C.M.R. ch. 400, § 7