• Caleffi SolarCon Storage Tank - 80 Gallon Tank - NAS20083

    - Single Lower Coil - Electric Element Boost

    Product ID • NAS200830000

  • $2,129.75
  • Quantity:
  • Estimated Overland Truck Shipping Truck Shipping


The Caleffi solar water heater NAS20083 80 Gallon Tank has one internal coil and a backup electric heating element. A heating medium is passed through the solar panels and internal coil as long as there is an adequate temperature difference between the heating medium and stored water in the tank. The internal coil is located as close to the bottom to facilitate the transfer of heat even at lower solar panel temperatures.

During periods of water flow through the water heater. hot water is drawn from the top of the heater and cold water comes into the bottom of the tank (by a dip tube or bottom inlet). On the NAS20083 single coil tank, if the hot water demand should exceed the solar heat input or there is an insufficient temperature difference between the heating medium and stored water, the heating element thermostat will activate the electrical heating element for backup heat.

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Technical Specs

Caleffi SolarCon Storage Tank - 80 Gallons NAS20083 Tech and Specs

  • Lower Hot Water Coil
  • Electric Element Boost (Backup)
  • Actual Tank Volume Amount
    75 gallons
  • Tank materials
    Porcelain coated steel
  • Tank insulation
    2 Inches non-CFC foam
  • Tank external cover
    Powder-coated steel (20-24 ga.)
  • Insulation thermal conductivity
  • Anode rods
    2 each magnesium
  • Internal heat exchaner coil (lower)
    1-1/2 inches by 36 feet
  • Connections
    1 Inch NPT
  • Maximum working pressure
    150 psi
  • Testing pressure
    300 psi
  • Temperature and pressure relief valve
    210°F / 150 psi max
  • Maximum tank temperature
    180 Degree F
  • Recommended maximum delivery hot water temperature
    120 °F
  • Power requirements (electric element)
    240 VAC
  • Power consumption (electric element)
    4.5 KW
  • Coil Volume Solar / Boiler
    2.76 gallons
  • Coil Surface Area Solar / Boiler
    14.144 (sq feet)
  • Coil Friction Loss Solar / Boiler
    .50 (feet of head)
  • First Hour Rating
    126 gallons
  • Recovery Rate Solar & Backup
    56 gallon per hour
  • Standby by loss
    .8 F Degree per hour
  • Agency approval
    UL listed

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