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Author Topic: TERMOVAR AF thermic 3-way bypass valve --- WANTED  (Read 403 times)
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Posts: 124

« on: May 15, 2019, 09:29:04 AM »

Hello All,
I hope you can help me. Approx 12 years ago I had a 22mm TERMOVAR AF thermic 3-way bypass valve 45c fitted to my solar thermal system.
Unfortunately this unit is failing, whereby it is not functioning correctly and is not loading the lower coil once the temperature exceeds the point when it is supposed to open.
This is causing the upper coil to reach undesirable temperatures.
Attached is a schematic Diagram:
Does anyone know where I can find a replacement.

Many thanks

* Termovar AF Thermic 3-way bypass valve.jpg (91.85 KB, 851x441 - viewed 177 times.)
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Posts: 1222

« Reply #1 on: May 15, 2019, 12:14:20 PM »

I would think the internals will be a standard off the shelf item. I would remove them and try to match.

or try google as they still seem to make them, though I can't see a 22mm.


or replacement guide.

85no 58mm solar thermal tubes, 28.5Kw PV, 3 x Sunny Backup 5048, 3x Sunny Island 5048, 2795 Ah (135kWh) (c20) Rolls batteries 48v, Atmos wood gasification boiler, Brosley wood burner, 2000lt buffer tank and 250lt DHW
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