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If my project is using air handlers that supply 100% outside air at a constant volume, do I still need to install an airflow monitoring device?

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CS-2009 IEQc1:Outdoor Air Delivery Monitoring

summary for mechanically ventilated spaces

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BH .
LEEDuser Basic Member
52 thumbs up

So briefly (for C&S mechanically ventilated spaces): For densly occupied spaces we need: CO2 monitors and i.e. air flow monitoring located in the outdoor intakes of each central HVAC For non-densly occupied spaces we need: i.e. air flow monitoring located in the outdoor intakes of each central HVAC (without any CO2 monitors) For tenant spaces : we can (but don`t have to) include future expansion for CO2 monitors. That is the simplest solution, but I`m not sure if I`m right?

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Tristan Roberts
Representative
Vermont House of Representatives
LEEDuser Expert
7780 thumbs up

Mon, 11/21/2011 - 06:38

Mostly right—you do need to required tenants through lease agreements to comply with the credit as well, so that would imply the need to provide infrastructure supporting this.

Thu, 11/15/2012 - 19:16

So, when a tenant install its own CO2 monitor, is there any requirement for the alarm? I mean, can this alarm be provided at the tenant own space, or does the C&S building's BMS need to be notified too?
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Michael Smithing
Director - Green Building Advisory
Colliers International Ltd.
LEEDuser Basic Member
201 thumbs up

Fri, 11/16/2012 - 08:06

We install these regularly in CI projects. The CI credit language says that an alarm needs to sound either to the building operator OR the occupants. As I don't think the building operator will actually take action on the alarm, I make sure the monitor can make a visual alarm to the space occupants who can open the window or door.

Thu, 12/06/2012 - 14:20

I'm working on a C&S shopping mall project. If I understand well it's enough to install CO2 sensors only in a core and shell areas (if there are densely occupied spaces). We don't have to require future tenants to install CO2 sensors, is that correct? Regarding airflow monitoring - if some tenants will install their own ventilation systems then we should require that they install airflow monitoring devices, right?

Tue, 12/11/2012 - 16:44

Hello Adam, If I am not mistaken, from the conversation before, there is no need to "REQUIRE" the tenant by a leasing agreement to install the CO2 censor, they can provide them if they want to, in order to apply for this credit in a CS building the BMS must be capable of expand to accomodate censor monitoring and to call attention to building users in case CO2 levels are exceeded. Michael, Tristan, please correct me if I am wrong.

Tue, 12/11/2012 - 17:41

Thank you for your reply. Is it really required that the BMS system is capable of expansion? Isn't it enough if the sensors give visual alert to the space occupants? Moreover, my concern is that there will be a CAV vetilation system in this shopping mall and CO2 sensors won't be of much use for future tenants (since that are no windows or doors that could be opened to allow more air).

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