You don't. If that were the case, we'd have expansion tanks on wet systems also.
Figure the tank size based on the volume of pipe exposed to temperature swings. But be conservative - some of the summer heat and winter cold will extend a short ways into the conditioned space. Ed Kramer Manhattan, KS > If anti freeze expands only when temperature extremes are encountered, > why size a tank for the whole system that sits in in conditioned or > heated air? _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
