6.6102.6 Intakes

Topic: 
Supply
Subtopic: 
Components
Desired Outcome: 
Intake optimizes air flow while limiting the entry of insects, debris, and contaminants
For supporting material, see Referenced Standards.
TitleSpecification(s)Objective(s)
6.6102.6a
Hole in building shell

Holes cut to accommodate the terminal fittings should be no more than 1/8" larger than the fitting itself

Ensure a weather tight installation

6.6102.6b
Intake fitting

Intake fitting will have integrated collar at least the same diameter as the duct

The fitting will be appropriate for regional weather conditions and installation location on exterior of building

Effectively draw the required volume of air from outside

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

Ensure durable installation

6.6102.6c
Occupant education

Intake fitting will be labeled "ventilation air intake"

Occupant will be instructed to keep yard debris and other contaminants clear of the intake

Ensure unrestricted air flow

6.6102.6d
Damper (if applicable)

The damper will be installed to open in the direction of the desired flow

Damper will close when system is off

Ensure unrestricted air flow

6.6102.6e
Connection to intake fitting

Duct to intake fitting will be connected and sealed in accordance with supply duct detail

Ensure fasteners do not inhibit intake damper operation

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

Ensure a weather tight and durable intake installation

Ensure unrestricted air flow

6.6102.6f
Weatherproofing

Exterior termination fitting will be flashed or weather sealed

Water will be directed away from penetration

Installation will not inhibit damper operation

Weatherproofing will be in accordance with manufacturer specifications

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

Ensure a weather tight and durable intake installation

Ensure unrestricted air flow

6.6102.6g
Pest exclusion

Screen material no less than 1/4" and no greater than 1/2" hole size in any direction will be used

Screen will be installed so it does not inhibit intake damper operation

Prevent pest entry

Ensure unrestricted air flow

6.6102.6h
Intake location

Intake will be installed in accordance with all applicable code requirements and/or the most current version of ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org 62.2

Prevent contaminants from entering building

Ensure unrestricted air flow