Large Volume Solar Tanks

There are many solar thermal applications where higher volumes of water storage is required. In fact, the more storage, the better the solar system will function.

Smarter systems demand smarter tanks.

Niles Steel Tank has developed large volume storage tanks coupled with internal 1-1/2” O.D. heating coils.

  • Each coil has 14.2 sq./ ft. of heating surface designed for slower gpm rates which solar systems operate.
  • Internal coils are single wall coils and can be positioned in almost any configuration in the tank.
  • Depending on the diameter and height of the tank we can pack each tank with as much heating surface that is physically possible.

By utilizing multiple coils, different solar panel placement designs can be realized. Morning or afternoon sun can be captured, back-up systems can be refined and you can capture more of the sun’s energy and design a “smarter” tank. Multiple coils allow for modular heating zones within the tank that can be “turned on” or “off” based on the load.

Used in conjunction with boilers, you can create large and almost instantaneous water heaters.

In today’s world of modulating boilers and demand for high efficiencies, saving money is the goal. By utilizing multiple coils in the tank, each coil becomes a separate heating “zone” which produces more efficient firing rates and faster heating capabilities.

How to order:

For quote generation, all we need to know is the tank size, number of coils, insulation or not.

  • Select your tank consider door openings and ceiling heights.
  • Refer to our coil chart below to see how many coils will fit into your tank. You can tell us where to place the coils later and we’ll do a sign-off drawing for you.
  • Determine if you would like the tank to be top-coated with R-16 spray on insulation. Consider door openings and ceiling heights knowing that topcoat will add approximately 6” to the diameter and 3” to the overall height of the tank.

Please check our solar calculator which will help you if your chosen product can produce your desired results. The solar calculator is designed to confirm your choice on number of coils and tank size. It is not intended to guide you on what to use, but it will tell you “If” you choose “X”, your outcome will be “Y”.

Model Number explained

SR-42-084-4-TC
(SR) = Solar Tank
(42) = Diameter
(084) = Tank height (Less base ring), add base ring for total height
(4) = number of coils
(TC) = Topcoat Insulation (optional)

Large Volume Solar Tank Internal Coil
Model Gal. (A) OverallHeight (B) TankHeight (C) Diameter SystemConnection WorkingPressure Weight
EBT-30-063 175 67″ 63″ 30″ 1-1/2″ 125 465
EBT-30-075 210 79″ 75″ 30″ 1-1/2″ 125 505
EBT-30-085 240 89″ 85″ 30″ 1-1/2″ 125 550
EBT-36-072 285 76″ 72″ 36″ 1-1/2″ 125 675
EBT-36-078 310 82″ 78″ 36″ 1-1/2″ 125 707
EBT-36-085 340 89″ 85″ 36″ 1-1/2″ 125 750
EBT-36-090 360 94″ 90″ 36″ 1-1/2″ 125 780
EBT-42-081 435 85″ 81″ 42″ 1-1/2″ 125 1185
EBT-42-084 453 88″ 84″ 42″ 1-1/2″ 125 1216
EBT-42-093 505 97″ 93″ 42″ 1-1/2″ 125 1304
EBT-48-073 500 77″ 73″ 48″ 1-1/2″ 125 1293
EBT-48-096 675 100″ 96″ 48″ 1-1/2″ 125 1550
EBT-48-108 765 112″ 108″ 48″ 1-1/2″ 125 1685
EBT-48-120 860 124″ 120″ 48″ 1-1/2″ 125 1870
EBT-48-141 1040 145″ 141″ 48″ 1-1/2″ 125 2053