Brochure

Only A. O. Smith incorporates true commercial-grade heat exchangers in our tankless heaters (510, 510C, 510U, 540H, 540P,
CT-199 and 910 non-ASME models). All aspects of the heat exchanger are designed to add the durability and reliability that is vital to any
successful commercial organization or business.
Commercial-Grade Copper Alloy
Our commercial-grade copper is a heat-resistant copper alloy, with additive elements that make it much stronger and harder than the
standard C1220 copper used in most other heat exchangers. Our commercial-grade copper has 8 times the tensile strength of
regular copper. Even at high temperatures, our commercial-grade copper maintains a fine grain and high strength. Commercial-grade
copper provides resistance to the damaging effects of erosion that can cause heat exchangers to leak.
Drum Thickness
During every ignition cycle, thermal expansion causes all heat exchangers to undergo heat stress. After the thousands of ON/OFF cycles
typically seen in a commercial application, this heat stress can prove damaging. This is why the heat exchangers in our commercial and
light commercial products utilize drums that are 25% thicker, ensuring the longevity of our products. A thicker drum creates less strain on
the heat exchanger.
Commercial-Grade Copper Tubing
water
water
0.016" (0.4mm)
A thicker drum creates less strain on the heat exchanger.
0.020" (0.5mm)
drum coil
drum coil
water
water
drum coil
drum coil
drum
drum
25% Thicker
A thicker drum creates less
strain on the heat exchanger
A thinner drum strains more
under heat stress
DURABILITY
HEAT EXCHANGER WITH COMMERCIAL-GRADE COPPER
water
water
0.016" (0.4mm)
A thicker drum creates less strain on the heat exchanger.
0.020" (0.5mm)
drum coil
drum coil
water
water
drum coil
drum coil
drum
drum
25% Thicker
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