N.Y.C. Admin. Code § MC 514: Section MC 514: Energy Recovery Ventilation Systems

514.1 General.

Energy recovery ventilation systems shall be installed in accordance with this section. Where required for purposes of energy conservation, energy recovery ventilation systems shall comply with the New York City Energy Conservation Code. Ducted heat recovery ventilators shall be listed and labeled in accordance with UL 1812. Nonducted heat recovery ventilators shall be listed and labeled in accordance with UL 1815.

514.2 Prohibited applications.

Unless specifically designed or listed for the specific applications and as part of an engineered system, energy recovery ventilation systems shall not be used in the following systems:

1. Hazardous exhaust systems covered in Section 510.

2. Dust, stock and refuse systems that convey explosive or flammable vapors, fumes or dust.

3. Smoke control systems covered in Section 513.

4. Commercial kitchen exhaust systems serving Type I or Type II hoods.

5. Clothes dryer exhaust systems covered in Section 504.

Exception: The application of energy recovery ventilation equipment that recovers sensible heat only utilizing coil-type heat exchangers shall not be limited by this section.

514.3 Access.

A means of access shall be provided to the heat exchanger and other components of the system as required for service, maintenance, repair or replacement.

514.4 Recirculated air.

Class 1 or Class 2 air as described in ASHRAE 62.1 that is conveyed within energy recovery systems shall not be considered as recirculated air where the energy recovery ventilation system is constructed to limit cross-leakage between air streams to less than 10 percent of the total airflow design capacity.

514.5 Combined system allowed.

Environmental exhaust air and toilet exhaust may be combined in any occupancy downstream of all air inlets of the system provided that such exhaust cannot be recirculated. In Group R occupancies, exhaust from domestic kitchens and toilets/baths from one or more dwelling or sleeping units may be combined at a point downstream of all air inlets of the system.