Brochure

5.551
(141)
Dimensions in Inches (mm)
5.192 (132)
1.437
(36.5)
BAC-13xxxx/14xxxx
Series with Built-In
CO
2
Sensor
FlexStat, BACstage, and TotalControl
are trademarks and KMC Controls is a
registered trademark of KMC Controls, Inc.
© 2011 KMC Controls, Inc. 12/11 SB-049C
This document is printed, using ink that is
environmentally friendly, on recycled (30%
PCW and 55% total recycled fiber) paper.
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Telephone: [phone] (574.831.5250)
Fax: [phone]
www.kmccontrols.com; [e-mail]
CO
2
and DCV Options
The air we breathe is critically important to our
health since lurking potential contaminants can
include dust, cigarette smoke, carbon dioxide,
carbon monoxide, ozone, radon, VOCs (volatile
organic compounds), and various other chemical
compounds from outgassing of building
materials and cleaning supplies. Demand Control
Ventilation (DCV) optimizes indoor air quality
while still providing energy efficiency.
The BAC-13xxxx series uses Automatic
Background Logic (ABC Logic), a patented self-
calibration technique designed to be used in
applications where concentrations will drop to
outside ambient conditions (approximately 400
ppm) at least three times in a 14 day period,
typically during unoccupied periods. The sensor
will maintain accuracy specifications with ABC
Logic enabled, given that it is at least four times
in 21 days exposed to the reference value. The
BAC-13xxxx series, with ABC Logic, has been
certified to comply with CA Title 24, Section
121(c), as well as sub-paragraph 4.F that specifies
accuracy will be maintained within tolerance for a
minimum of 5 years without recalibration and that
a detected sensor failure will cause the controller
to take appropriate corrective action.
The BAC-14xxxx series, for zones with continuous
occupancy, has a dual channel sensor. A CO
2
channel measures gas concentration, and
a reference channel measures the sensor
signal intensity. Self-calibrations are performed
approximately every 24 hours using the reference
channel.
Although BAC-12xxxx FlexStats do not have a
built-in CO
2
sensor, they still have DCV control
sequences available. When DCV is enabled in
these models, IN9 is assumed to be connected
to an external CO
2
sensor. BAC-13xxxx/14xxxx
FlexStats also have the external sensor option,
and if used, the highest of the two readings
(internal vs. external) will be used to control DCV
sequences. The CO
2
ppm display (when enabled)
also shows the highest of the two levels.
When using applications with a modulating
economizer option, the three types of Demand
Control Ventilation (DCV) configurations available
are Basic, Standard (which complies with CA
Title 24, Section 121(c) when the BAC-13xxxx
settings are properly configured), and Advanced
(complies with ASHRAE Standard 62.1-2010
and follows guidelines by Portland Energy
Conservation, Inc. when the settings are properly
configured).
More Information
• For more details about this FlexStat series, see
the data sheet (914-035-01).
• To see FlexStats as part of a building
automation system, see Controlling Your Green
Building Brochure (SB-048).
• These documents and more can be
downloaded from the award-winning KMC
Controls web site (www.kmccontrols.com).
NOTE: Not all characteristics covered by IEQ (e.g.,
daylighting, views, and acoustics) are relevant
to the FlexStat, and earlier BAC-1xxxx series
FlexStats (with only three external inputs) do not
have all the options described in this document.