6.6202.5 Heat Recovery Ventilator and Energy Recovery Ventilator Installation serving Multiple Dwelling Units (All Building Types)

Topic: 
Whole Building Ventilation
Subtopic: 
Components
Desired Outcome: 
Heat Recovery Ventilator ( HRV HRV Heat recovery ventilator ) and Energy Recovery Ventilator ( ERV ERV Energy recovery ventilator ) systems installed to specifications
Note: 
The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
For supporting material, see Referenced Standards.
TitleSpecification(s)Objective(s)
6.6202.5a
Equipment specification

Specifications will be field verified as appropriate to site conditions by installer

Ensure appropriate equipment is specified

Ensure design and installation are feasible

6.6202.5b
Air flow

ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org 62.2 and local code requirements should be followed for identifying design airflow rates within apartment dwelling units; all other areas will follow local code requirements and/or ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org 62.1 requirements

Air flows will be measured in accordance with ANSI ANSI American National Standards Institute, www.ansi.org / ACCA ACCA Air Conditioning Contractors of America, www.acca.org Standard 5 or ANSI ANSI American National Standards Institute, www.ansi.org / ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org Standard 111 and adjusted to meet design requirements

Provide sufficient outdoor air to desired locations

6.6202.5c
Wiring

Wiring will be installed by a licensed contractor

Wiring will be installed in accordance with original equipment manufacturer specifications, and local and national electrical and mechanical codes

Refer to NFPA NFPA National Fire Protection Association, www.nfpa.org 70: National Electrical Code for installation requirements.

Prevent an electrical hazard

6.6202.5d
Access

Fans, service switch Service switch An electrical switch that controls the complete flow of electricity to a mechanical device , filters, drain, and drain pan will be accessible for maintenance or replacement

Maintain designed air flows and system performance

Ensure occupant health and safety

6.6202.5e
HRV HRV Heat recovery ventilator / ERV ERV Energy recovery ventilator mounting

HRV HRV Heat recovery ventilator / ERV ERV Energy recovery ventilator will be mounted securely in accordance with manufacturer specifications and local code requirements (in terms of seismic restraints)

HRV HRV Heat recovery ventilator / ERV ERV Energy recovery ventilator will be oriented so the equivalent length of the duct run is as short as possible

HRV HRV Heat recovery ventilator / ERV ERV Energy recovery ventilator will be isolated from the building framing unless specifically designed to be directly attached

Ensure short duct runs achieve optimum air flows

Ensure HRV HRV Heat recovery ventilator / ERV ERV Energy recovery ventilator is mounted securely

Ensure HRV HRV Heat recovery ventilator / ERV ERV Energy recovery ventilator housing or building framing does not shake, rattle, or hum when operating

Minimize noise

6.6202.5f
Condensate drain

Condensation shall be drained to a location approved by the local jurisdiction

Prevent moisture problems

6.6202.5g
New connecting ductwork

All exposed ductwork outside of the building will be insulated to a minimum R-12, protected from weather exposure, and sealed at all penetrations into building shell

Ensure durability and energy efficiency of ductwork

6.6202.5h
Distribution systems

Note: HRV HRV Heat recovery ventilator / ERV ERV Energy recovery ventilator provides the outdoor air supply fan and the exhaust fan

The rest of the ventilation system will be installed in accordance with the following details:

  • SWS 6.6104.1 Outdoor Supply Air Handling Unit Serving Multiple Dwelling Units or Corridors )
  • SWS 6.6004.1 Central/Common Exhaust Fan Serving Multiple Dwelling Units via Common Duct(s) and Dwelling Unit Branches

Achieve the desired air flows to and from the desired locations

Preserve integrity of the duct system and building envelope Envelope The separation between the interior and exterior environments of a building that includes a combination of air and thermal barrier

6.6202.5i
Fire dampers

Fire dampers must be accessible for inspection and/or testing by the local authorities; if fire dampers are not accessible from a grill or register, an access door in the ductwork is required

Sealing activities will not interfere with the operation of fire dampers, balancing dampers, or backdraft dampers

Type B fire dampers will be used as required by fire code

Ensure access to fire dampers for safe operation

Minimize static pressure

Maximize air flow

6.6202.5j
Occupant/property manager education

Occupant/property manager will be educated on purpose of system, and how and when to change filter and clean drain pan, if applicable, in accordance with manufacturer specifications

Ensure occupant health and safety

Preserve integrity of system