Water Heater Brochure

How do I prevent hard water scale?
X3 Scale Prevention Technology
Unprotected tankless:
Failed at 5.8 simulated years and 136,000 gallons
Tankless with X3 Technology
Still running after 19.7 simulated years and 460,000 gallons
Product Preservers
®
For applications when X3
®
Technology is not available, A. O. Smith Product Preservers
anti-scale filters protect your tankless water heater from damage due to scale
formation. This system does not add chemicals to the water or require electricity. As
water flows through the filter, hard water minerals form inactive scale crystals which
flow through the water heater without sticking to the heat exchanger.
Product Preservers are not needed for units with X3 Technology. Product Preservers filters are a minimal maintenance solution, which
require replacement every two years.
Tankless Model 110U 310U/C 510U/C 140H 240H 340H 540H/P 910 CT-199
85°F 6.6 8 9.3 6.4 6.6 8.0 10.0 14.5 10.0
80°F 5.7 7.8 8.2 5.6 6.6 8.0 9.5 14.5 9.5
75°F 5.1 6.9 7.3 5.0 6.6 7.6 8.4 13.5 8.4
70°F 4.6 6.2 6.5 4.5 6.1 6.8 7.6 12.2 7.6
65°F 4.2 5.7 5.9 4.1 5.5 6.2 6.9 11.0 6.9
60°F 3.8 5.2 5.4 3.7 5.1 5.7 6.3 10.1 6.3
55°F 3.5 4.8 5.0 3.4 4.7 5.3 5.8 9.4 5.8
50°F 3.3 4.5 4.7 3.2 4.3 4.9 5.4 8.7 5.4
45°F 3.1 4.2 4.4 3.0 4.1 4.6 5.0 8.1 5.0
40°F 2.9 3.9 4.1 2.8 3.8 4.3 4.7 7.6 4.7
35°F 2.7 3.7 3.8 2.6 3.6 4.0 4.5 7.2 4.5
Colder Climate Warmer Climate
Requires multiple units100291509 Product Preservers
®
Anti-Scale System
Ground Water Temperature (°F)
Sizing Chart
Flow Rate Based Ground Water Temperature (assume 120°F Set point)
A. O. Smith has combined its expertise in water heating and treatment to create X3
®
Scale Prevention Technology.
By preventing scale from ever forming, this feature extends the life of the unit three times longer than traditional
tankless. This makes it the first tankless product that maintains “like-new” performance without requiring any
scale-related maintenance.
A. O. Smith stands behind this revolutionary product with the industry’s first ever “Peace of Mind” limited warranty.
Unlike competitive warranties, this 15-year limited warranty covers scale-related failures should they occur.
OVERCOMING HARD WATER SCALE
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