Anyone ever integrated this residential system into a commerical DDC system? Maybe a driver to the System Access Module via RS-232? We have an engineer who likes Infinity for high end homes and wants to integrate to DDC in a central plant.
Unless something has changed with Carrier's Infinity system in the last 9 months then no you cannot do it. I had a bank that I was supposed to control all the HVAC but the basement unit was an infinity unit. You have to use the infinity stat (or a specific carrier non-programmable stat) and you cannot interface with their signal. The infinity system was designed for residential control and was not designed to "talk" due to the residential status. The variable speed motor on the indoor blower was the biggest problem I had. I could have interfaced if it wasn't for the blower and it's control board relying on the infinity stat. Let me know if you find something else out.
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Integrating residential HVAC to commercial DDC isn't common and I don't have much hope of a positive answer, but stranger things have been done. Thanks anyway Crab.