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  • Maximum First Hour Rating at 135°F (gal./hr.) : 294
  • Continuous Draw Rating at 135°F (gal./hr.) : 217
  • Standby Loss (°F/hr.) : .45
  • Minimum Boiler Output (MBtu/hr.) : 120
  • Boiler Water Flow Rate (gal./min.) : 6
  • Pressure Drop through Coil (ft. w.c.) : 10
  • Storage Capacity (gal.) : 70
  • Height (in.) : 45-3/4
  • Diameter (in) : 28
  • Maximum Allowable Working Pressure : 150 psi
  • Approximate Shipping Weight (lbs.) : 300
  • A 10-year full tank replacement, two-year labor and one year on parts, which include the coil, come with every Alliance SL.
  • Hydrastone-lining
    The concept of stone-lined water tanks is not a new one, and has been proving successful against corrosion for ages. Many of the stone-lined tanks are installed are 25-30 years old. In fact, the New England area has been using stone-lined tanks for years due to their water supply being very acidic and has been devastating to glass lined tanks.
    Br> What makes the Alliance SL unique is the Hydrastone-lining. This one half inch lining protects the steel tank from the corrosive action of water. When the water first enters the tank, it is absorbed into the Hydrastone-lining permanently. This water loses its oxygen and becomes inert, non-corrosive water which then acts as a protective wall between the hot water and steel tank. This unique process and design makes Alliance SL water heaters a great choice for domestic hot water applications.
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Capacity (Gallons):


Height (Inches):


Diameter (Inches):




Circulator (GPM):


Continuous Draw:

217 Gallons/Hr @135F

1st Hour Delivery (Gallons):

294 Gallons @ 135°F


10 Year Limited (Tank) 1 Year Limited (Parts)



Water Connection:


Max PSI (Boiler):

45 psi

Max PSI (Domestic):

150 psi

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