6.6102.3 Intake for Ventilation Air to Forced Air System Used for Heating or Cooling

Topic: 
Supply
Subtopic: 
Components
Desired Outcome: 
Intake reduces pollutant entry, is easily maintained, has proper flow, and enhances house durability
Note: 
The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
TitleSpecification(s)Objective(s)
6.6102.3a
Forced air system requirements

Existing forced air system leakage to outside will be less than 10% of the air handler flow when measured at 25 pascals with reference to outside

Any portion of the return located inside the combustion appliance zone will be air sealed 
 

Reduce migration of pollutants

6.6102.3b
Wiring

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

Prevent an electrical hazard

6.6102.3c
Access

Motorized damper and service switch Service switch An electrical switch that controls the complete flow of electricity to a mechanical device will be accessible for maintenance in accordance with required code or authority having jurisdiction

Ensure accessibility for maintenance

6.6102.3d
Mounting intake duct

Ventilation duct will be attached as close to the HVAC HVAC Heating, ventilation, and air conditioning system's fan as possible while remaining in compliance with HVAC HVAC Heating, ventilation, and air conditioning manufacturer specifications

Filtration of ventilation air will be provided before passing through the thermal conditioning components

Duct will be connected to intake fitting

Connection and seal will be performed according to supply duct detail

Ensure short duct run to achieve optimum air flow

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

6.6102.3e
Motorized damper

A motorized damper or equivalent technology will be installed between the intake fitting and the return side of the air handler

Air flow will be provided by sequenced operation of the damper or equivalent technology

Prevent air flow when none is desired

6.6102.3f
Intake filter

An accessible filter will be installed

Filter will be able to remove contaminants consistent with at least minimum efficiency reporting value ( MERV MERV Minimum efficiency reporting value ) 6 or better when tested in accordance with ANSI ANSI American National Standards Institute, www.ansi.org / ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org 52.2

Filter or air cleaning systems that intentionally produce ozone will not be allowed

Ensure occupant health and safety

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

6.6102.3g
Occupant education

Occupant will be educated on how and when to change filter

Protect occupant health and safety

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