[Equest-users] Co2 Monitoring

Dahlstrom, Aaron ADahlstrom at in-posse.com
Wed Oct 26 12:12:27 PDT 2011


Robert -

The two things I think to investigate:

1)      Do you comply with section 6.4.2.9 of 90.1-2007? This is the section that requires demand control ventilation for certain spaces on certain systems.

2)      Is the project pursuing the LEED point for Outdoor Air delivery monitoring? If so, that has its own set of specifications, which include CO2 monitors (monitor only) for mechanically ventilated spaces that exceed a certain occupant density.

AD

Aaron Dahlstrom , PE, LEED(r) AP
In Posse - A subsidiary of AKF| 1500 Walnut Street, Suite 1414, Philadelphia, PA 19102
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From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Robert E. O'Connell
Sent: Wednesday, October 26, 2011 2:06 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Co2 Monitoring

Gentlemen I have a question regarding 90.1 when modeling a space.

The design we are using for a project is to provide minimum ventilation (as called for in ASHRAE 62.1-2007) to all the spaces based on max occupancy.  The spaces are offices and conference rooms, one or two class rooms.  The heating and cooling load is provide in each space by FCU.  The make-up air is preconditioned to 55 Degree F.  The relief air passes through a heat recover unit to collect the heat from the relief air.

If was are not varying the make-up air quantity do we need to have CO2 monitoring in each space.

Do you believe we would get any push back from USGBC on this.

Has anyone dealt with this issue before.

Robert O'Connell P.E.
Email: reoconnell at meengineering.com<mailto:reoconnell at meengineering.com>


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