DRAFT GreenPoint Rated Existing Home Rating Manual version 6.0 | страница 77

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Heating, Ventilation, and Air Conditioning

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Ventilation system controls, including the on/off switch, must be clearly labeled as controlling the whole-house ventilation system (for example, “This switch controls the ventilation fan that provides outdoor air for the purpose of improving indoor air quality. This fan/switch should remain on, unless the building will be unoccupied for long periods (weeks) of time”). A Homeowner Manual must include the following information about ventilation system purpose, operation, and maintenance: – – – – The purpose of the ventilation system, and the importance of operating it The location of the fan(s), controls, exhaust and/or supply grilles, ducts, and (except for exhaust only systems) location of the supply air intake and filter Manufacturer’s instructions for fan installation, operation, and maintenance, include filter replacement (if any) Guidance on speed settings and adjustments, for multiple- or variable-speed fans

H9.3.

Outdoor Air Ducted to Bedrooms and Living Areas (2 Points)

Outdoor air must be filtered (through a MERV 6 filter at a minimum) and ducted and supplied directly to all bedrooms and major living areas. Main living areas include room where people spend the most time, such as a living room, great room, family room, and/or home office (but not kitchen, laundry rooms, garage, basement, bathrooms, etc.). This can be accomplished by installing either a supply system or balanced (exhaust and supply) system whose supply is separately ducted to those rooms. VERIFICATION Measure H9.1 Field Verification: The Rater will complete field compliance verification of the system type (exhaust, supply, or balanced) and minimum delivered cfm, and that the whole-house ventilation fan controls are appropriately labeled. Documentation: The Rater must complete the following: ? ? An Accountability Form with measure criteria signed by a mechanical engineer, HVAC installer, or other appropriate professional stating compliance with ASHRAE Standard 62.2. Calculations showing compliance with ASHRAE Standard 62.2 and results of a HERS test of mechanical ventilation rates.

Measure H9.2 Field Verification: The Rater must complete field compliance verification of the following: ? ? ? ? ? The fan is sized to deliver at least 0.35 AC/h during continuous operation. An accessible MERV 6+ filter is on supply or balanced ventilation systems. No excessive noise is in the living space due to remote-mounted fans. The HVI-rated fan efficacy is at least 1 cfm/W at 0.25 inches water gauge. The whole-house ve