Solar Drainback Systems

Posted by admin | | Sunday 15 February 2009 8:43 pm

Solar Drainback Hot Water Systems


80-120G Drainback Solar Hot Water Kit with Evacuated Tubes

Drainback Systems are the simplest Solar Hot Water Systems to install, and require far less maintenance than any other type of Solar Hot Water System. Additionally, Drainback Solar Hot Water Systems can be installed anywhere in the United States because of their simple, gravity based freeze protection, which is basically as efficient as a pressurized glycol system.

The unique component of a Drainback Solar Hot Water System is the Drainback Reservoir, which allows water, or a water-glycol mix,  to drain out of the Solar Collectors and the manifold when the system is inactive, preventing the water-glycol mix from sitting in the manifold and exterior piping, which prevents freezing and also extends the life of the manifold and solar collector in general.

There are several distinct advantages that a Drainback Solar Hot Water System has over other Solar Hot Water Systems. These advantages include:

  • Gravity is fail-proof and maintenance free – either water, or a glycol mixture may be used in the collector loop
  • The system is not damaged if the pump fails to run, and the system cannot reverse thermosyphon at night
  • There are far less moving components to fail (eg. check-valves, air vents and expansion tanks) which dramatically reduces the need and costs of maintenance

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Pre-Packaged Drainback Solar Hot Water System:

Our Pre-Packaged Drainback Solar Hot Water Kits include all of the major components that you need to design and install your own cost-effective, clean-operating Drainback Solar Hot Water System, saving you hundreds of dollars in water heating costs each and every year.

The 80-120 Gallon System is built with 30 Evacuated Tube Solar Collectors and a 80 Gallon Solar Hot Water Storage tank, and is capable of heating between 80 and 120 gallons of hot water everyday in a northern climate. This will provide the majority of the water needed for a household of up to 6 people on the average day.

Your System will Include:

  • (2) SunMaxx-30 Evacuated Tube Solar Collectors
  • (2) Adjustable Tilt Mounting Hardware
  • (1) 80Gallon Solar Hot Water Storage Tank w/2 Internal Heat Exchangers
  • (1) Solar Hot Water Circulating Pump
  • (1) Solar Hot Water Controller
  • (1) 10Gallon Drainback Solar Hot Water Tank
  • (1) Drainback Tank Sight Glass
  • (1) Drainback Tank Stand
  • (1) Set of 2 Pump Flanges
  • (1) Support Team for Assistance when you need it