Hybrid Car – More Fun with Less Gas

Rho Sigma 500s

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Posted by mark schofield on February 15, 2004, 12:12 pm
Would a Goldline GL-30 controller be an easy and appropriate replacement for
a 25 year old Rho Sigma 500s controller for an older Grumman Sunstream
system. Both seem to use 10k ohm/77 deg thermistors, so I could leave the
existing ones in place; they are OK. The Rho Sigma board is getting a bit
unreliable and I'm getting too old to go to Radio Shack for resistors, ect.

                    Mark S

Posted by Sonideft on February 16, 2004, 1:06 am
As long as you are wanting to control pump(s) at 120VAC, it should work just



Stephen Cumminger, P.Eng, MBA, MCPM
Senior Consultant
Sonideft Solar
Tel: 902-865-2189
Fax: 902-484-7897
Email: stephen.cumminger@heatwithsolar.com

Posted by mark schofield on February 16, 2004, 6:12 pm
 thanks for the advice. It will power one Grundfos pump, so no problem.

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