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  • Heat-Flo 316 Stainless Steel Indirect Water Heater Tank with Dual Heat Exchanger and Electric Back-up - 115 Gallon - HF-115-DE

    Product ID • 115DE0000000

  • $3,959.00
  • Quantity:
  • Estimated Overland Truck Shipping Truck Shipping


The Heat-Flo stainless steel indirect water heater HF-115DE with electric backup is ideal for Solar Hot Water Heating system where you need a backup when there is not enough heat from the Sun. The HF-115DE has two heat exchangers. The lower one would accept the solar feed and the upper heat exchanger would take the backup heater. And if still not enough heat - then the electric backup would kick in for the upper area of the tank.

The high quality of the design and fabrication of these complete stainless steel heaters ensure efficient, maintenance-free operation and continuous supply of hot water. These rugged units are designed for heating large volumes of domestic or process water for residential, commercial or industrial applications.

If you are looking for a lot of hot water, that is much faster and a lot cheaper, the Heat-Flo indirect water heater is the answer.

What is an indirect water heater? An indirect is a storage tank with a heating coil built inside the tank. Hot water from any hydronic heating boiler is circulated through the coil inside to heat all the water in the tank. The unit is piped like any other heating zone.

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Technical Specs

Heat-Flo 316 Stainless Steel Indirect Water Heater Tank HF-115-DE Techs and Specs

  • Capacity Gallons
  • Heat Exchangers
    Upper and Lower
  • Electric Backup Watts
  • Electric Backup Volts
  • Min Boiler Water Flow Through Coil (gpm)
  • Pressure Drop Through Coil (in feet)
  • Upper Coil Heating Surface (sq.feet)
  • Lower Coil Heating Surface (sq.feet)
  • Max Working Pressure (psi feet)
    150 PSI
  • Upper Coil Recovery (Gallons *)
  • LowerCoil Recovery(Gallons *)
  • Connection Domestic NPT
    3/4 Inch
  • Connection Boiler NPT
    1 Inch
  • Thermal Wells
    Qty 2 at 3/8 Inch for Upper and Lower Heat Exchanger
  • Diamter Size
    28 Inches
  • Height
    74 Inches
  • Shipping Weight
    215 Pounds
  • * Based on a 200 degree boiler water supply and a 50 degree cold water input. For 180 degree F boiler water supply multiply by ratings by 0.86

Heat-Flo 316 Stainless Steel Indirect Water Heater Tank HF-115-DE Features

  • Tanks and coils are all stainless steel construction
  • Large smooth wall coils deliver full output for years. No finned tubing to collect lime and sediment
  • Includes thermostat well to control solar input
  • Large 4 Inch X 10 Inch electrical box with pre-wired heating element, thermostat, and high limit on electric backup units
  • Includes over 2 Inches of insulation, less than 1 Degree /hr. heat loss, and a flexible thermoplastic jacket that will not dent or corrode
  • All connections are on top for a neat, clean installation
  • Brass drain and relief valves are factory installed
  • Honeywell 4006 aquastat control is standard
  • Limited lifetime warranty residential installations 5 years commercial
  • Made in the USA

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