So far I have the Marchesa Luisa Casati, Anna Piaggi, and Isabella Blow. Anyone else? I love eccentric, strange, avante garde women!
If it only happens sometimes the odds that are a CO leak are slim. None the less say something to management or talk to some of your co-workers to see if they are having similar symptoms. Most likely you are getting dizzy because of the heat. It is probably a mild form of dehydration. Try drinking water regularly at work and see if that helps. The change from the temperature of your house to your office is probably the cause of it.
I would replace all the galvanized line with the correct black pipe. If you decide just to extend it's okay to extend with black, or reuse galvanized fittings but use teflon tape instead of threadlock. Make sure you wrap the threads several times.
This probably means the backup battery is low. Get maintenance up there. Even if you have to make an emergency calldo it! They're responsible for maintaining the alarm system, not you. They should regularly change the batteries to prevent things like this from happening.
