Solar Water tank recommendation

Paul Pollets

I use the Viessmann VitoCell B-300 79g Dual coil tank for my solar systems. The tank has the largest and longest coils for faster recovery rates, is entirely made of 316Ti stainless and has an unconditional lifetime warranty.

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Wayco Wayne_2

I'm on my way to

a customers house that needs a new water heater tank for their solar system. Their present one is leaking. Do you have any recommendations on different brands or features for me. Thanks in advance. WW

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mark schofield

replacement tank

A few years ago my 30 year old Grumman tank started to leak. My system has the heat exchanger on the wall. Glycol down and back from the panels and heated DHW to the tank which is for storage purposes. No coil inside. The local solar installer told me to purchase an electric water heater to use as the storage tank (not hooking up the electric). I bushed out both the pressure relief valve and bottom boiler drain, installing copper "T"s between the tank and moved devices. My cold water (street) is now fed into the bottom of the tank . The DHW to the house exits thru the existing labeled port on the top of the tank. The cold water from the tank to the exchanger on the wall goes out of the cold tank port (with the dip tube) and the heated water from the exchanger goes back into the tank in the "T" installed right in front of the pressure relief valve. The original Grumman instructions show this type of installation when using the system with an existing tank. An internet search will probably give you prices around $900 for a 50 gallon tank with the four ports. I bought a 50 gallon Whirlpool from Lowe's (sorry) for around $250, and wrapped it in R13. I used the thermistor from the old Grumman tank, placing it against the lower wall of the new tank under the insulation right wher the cold street water comes in. The solar storage tank feeds the tankless coil in the boiler. My only problem is a cloudy day. Mark S.

Ted_9

Superstor Solar

HTP has some new Solar tanks. They have the Superstor stainless and the Superstor Contender glass lined.

Wayco Wayne_2

Went and looked

It's a Vaughn Stone Lined tank. I opened the bottom access panel, where the heat exchanger is. Lot of surface rust but saw no leaks. Dried up the water in that area with a paper towel, and waited and looked for leaks. None came. It has been rainy and over cast so things weren't warmed up. Maybe it will leak when it is Sunny and things are hot. WW

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