for public comment from Nov. 30-Jan. 14 is addendum aq
that makes minor changes to improve clarity and to
address issues identified in sections 18.104.22.168.a and
In addition, 15 proposed addenda also are open for
public review from Nov. 30 until Dec. 30. They are:
bs reduces occupancy threshold for demand controlled
ventilation from greater than 40 people per 1000 ft2 to
equal to or greater than 25 people per 1000 ft2 with
exemptions for certain occupancies.
Addendum ca requires that vestibule heating be locked
out when outside air is above 45F, the same temperature
that lockout of freeze protection or ice melting systems
is required in section 22.214.171.124.
Addendum cb to removes the 10,000 cfm threshold for
optimum start and adds a threshold for systems
controlled by DDC. The addendum also expands the
requirement beyond air-based systems so that convectors
and radiant systems would be included.
Addendum cc adds minimum efficiencies for both axial and
centrifugal fan evaporative condensers with R-507A as
the test fluid to Table 6.8.1G.
Addendum cd clarifies what to do with piping system
accessories that are not in series with the piping
circuit that do not have the same heat losses/gains and
Addendum ce establishes package single zone systems as
the baseline HVAC system type for all retail occupancies
of two stories and less.
Addendum cf enables the establishment of a
window-to-wall ration for retail strip mall buildings.
Addendum ck requires the use of dual maximum control for
variable air volume zone control when the building has
Addendum cl updates the IEER values for air-cooled and
water-cooled air conditioners and heat pumps above
65,000 Btu/h. Depending on the cooling capacity and
product classes, the new IEERs are between 7 and 13
percent better than the values they are replacing. The
new IEERs will become effective on Jan. 1, 2016. Note
the IEER is a new metric that was developed by AHRI and
first implemented in the 2010 standard and is a better
representation of the annualized refrigeration system
energy use of a typical commercial packaged air
Addendum cn allows laboratory designs that incorporate
strategies to reduce peak airflows and minimum
unoccupied airflows to document energy savings
associated with reduced outside air volumes.
Addendum co modifies the Lighting Power Densities in
Table 9.5.1 to match the recommended light levels in the
10th Edition of the IES Lighting Handbook.
Addendum cp corrects a value in table 5-5 for steel
Addendum cr modifies Table 9.6.1 to correct the required
light levels for hospital corridors, assisted living
dining spaces and retail sales spaces.
Addendum an allows the option to use energy rates either
from actual local rates or EIA state data, where
approved by the building official when using Appendix C.
Addendum ar corrects the definitions for walk-in coolers
and walk-in freezers.
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society with more than 50,000 members worldwide. The
Society and its members focus on building systems,
energy efficiency, indoor air quality, refrigeration and
sustainability within the industry. Through research,
standards writing, publishing and continuing education,
ASHRAE shapes tomorrows built environment today.