Water Heater Water Heater Brochure

Takagi tankless products are built with commercial-grade materials to
ensure durability and reliability.
Commercial-Grade Copper Alloy
Our commercial-grade copper is a heat-resistant copper alloy, with additive elements that give it eight 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.
316L Stainless Steel
Takagi condensing models utilize 316L stainless steel in the secondary heat exchanger. Stainless steel performs well in extreme
environments including heat, acidic condensation and chloride.
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.
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
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
Secondary HX-Stainless Steel 316L
Primary HX
Commerical-Grade
Copper
Drum
Coil
Flow Adjustment
Valve
Bypass
Valve
Flow
Sensor
Cold Water
Inlet
Hot Water Outlet
DURABILITY
9