Quote:
Originally Posted by Bugeater
Heh, we have a commercial rooftop unit that cools the hallways in one apartment building, and I noticed the two huge compressors in it. That thing intimidates me...lol. Haven't had any trouble with it other than it inexplicably froze up after we had a power outage, but I just shut it down for a day to let it thaw and it's been fine ever since then.
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Those 2 compressors do not pump refrigerant through the same lines. They have seperate refrigerant lines that run through the same coils. I was taught to think of them as 2 systems working in series to make it a 15 ton or whatever tonage the unit is. So if you have a problem with the charge you will have to check the charge the same number of places as you have compressors in a unit. I have worked on some that you have to crawl up in the rooftops to service all 6 compressors.