garage fan

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Toros

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Tujunga, CA
Hi,
anybody know how to interlock garage exhaust fan with carbo.moxid. detectors located in subterranean garage of a multiunit build.

I already provided 3-phase, 30A power (#10 copper wires) to the exh. fan on roof.

Assuming no fire alarm system available.

Thank you
 
Need to know a bit more about the detectors.
Do they have an output circuit ? If so, what ?
Do they have dry contacts ?
 
Edwardtomas said:
Hi,
anybody know how to interlock garage exhaust fan with carbo.moxid. detectors located in subterranean garage of a multiunit build.

I already provided 3-phase, 30A power (#10 copper wires) to the exh. fan on roof.

Assuming no fire alarm system available.

Thank you
Click to expand...

Anytime I have done these systems it has been with a purpose built control panel listed for this life safety application, like this http://www.inteccontrols.com/pdfs/LGC-CO.pdf


More info here http://www.inteccontrols.com/pdfs/CO_Parking_Garage_Design_Guidelines.pdf

If you are trying to cobble something together using basic CO detectors I would strongly advise against it.
 
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If that's a bona-fide parking garage, then the buildng code requires either natural or mechanical ventilation. If you don't have 2 walls 50% open, you need mechanical ventilation. Being a required system, I'd be real careful. I've done many parking garages and never heard of only starting up the ventilation system when CO2 reaches a given level. I'm not saying what you're doing is wrong; I've just never heard of it.
 
mgookin said:
If that's a bona-fide parking garage, then the buildng code requires either natural or mechanical ventilation. If you don't have 2 walls 50% open, you need mechanical ventilation. Being a required system, I'd be real careful. I've done many parking garages and never heard of only starting up the ventilation system when CO2 reaches a given level. I'm not saying what you're doing is wrong; I've just never heard of it.
Click to expand...

Pretty commonly done around here but any I have touched have been designed by an engineer.
 
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