EcoRenovator - View Single Post - DIY thermal differential controller (solar hot water pump controller)

AC_Hacker · 10-05-09, 11:54 AM

I have noticed that a local solar company uses bi-metallic thermal disk switches, on the order of this:

You couldn't get a differential function, but at 25 amps and 240VAC max, it could turn the whole system on & off, very reliably, without standby current, without the need for a relay.

Regards,

-AC_Hacker

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10-05-09, 11:54 AM	#21
AC_Hacker Supreme EcoRenovator Join Date: Mar 2009 Location: Portland, OR Posts: 4,004 Thanks: 303 Thanked 723 Times in 534 Posts	I have noticed that a local solar company uses bi-metallic thermal disk switches, on the order of this: Thermal Disk Switch You couldn't get a differential function, but at 25 amps and 240VAC max, it could turn the whole system on & off, very reliably, without standby current, without the need for a relay. Regards, -AC_Hacker %%%%%%%%%%%%%%%%%%%%%%%%%%% Attached Images