A larger model of upright hot-water temperature controller has the same footprint as smaller models in the line.

A larger model of upright hot-water temperature controller has the same footprint as smaller models in the line. The new 7.5-hp, 48-kw KB Series water unit comes from Delta T Systems Inc., Richfield, Wis. Previously, the largest upright from this supplier was 3 hp, 24 kw. The larger model minimizes leaks by using integral castings instead of threaded connections.