looking for info

Little drummer boy · 12-22-13, 07:53 PM

Looking for a replacement differential controller with display for my 8 panel solar hot water system with 500 gal storage tank. This system is a collection of parts from two separate systems. I have been using the old "Independent Energy" controller for a year. Want an adjustable cut in/cut out setting, but it needs to work with the 10K sensors in the panels.

Daox · 12-23-13, 07:40 AM

Welcome to the site.

Are you looking for a DIY type solution (like an Arduino based controller), or a commercially made controller?

randen · 12-23-13, 07:45 AM

Little Drummer Boy

I've had very good luck with items found on E-bay out of China. There are several nice units avalible. Check Solar Hot Water. I have the packages mailed to my address without a problem. The quality is good for the items I had purchased.

Could you post some photos of you solar heating system. Your system of eight panels is a good size. How much of a impact are you making on your heating requirements? What is the sq.ft. you are servicing? How long have you had your system operating.

We are in Ontario Canada last year we hadn't collected much as cloud cover was the theme for the winter. And this year the season has started the same.

Hopefully in Osh. your enjoying more sun.
P.S. We have enjoyed for many years the fly-in!!

Randen

Mikesolar · 12-23-13, 10:55 AM

I use Resol, almost exclusively (300+ installs), it is good quality and has a lot of built in schematics for different types of systems.

Little drummer boy · 12-29-13, 08:03 PM

I'm looking for a commercial/complete unit, preferably a vari-speed output for the pumps.
My system heats a 2100 sq. ft. residence with a water-to air A coil on top of the forced air furnace. (A- coil also cools the home with well water during the summer months.)
A second use of solar heat is a suspended fin tube coil in the storage tank which preheats the domestic water before the W. heater receives it. The gas water heater was turned off from last May to Sept. because of steady tank temps. above 120 deg. F.

This system went online one year ago November. During the Dec. though Feb. days the tank temp. is usually too low to provide much temperature rise for the A-coil to do anything. Panels are set at 65 degree tilt for winter heating.

12-22-13, 07:53 PM	#1
Little drummer boy solar hot water recycler Join Date: Dec 2013 Location: Oshkosh, WI. Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts	looking for info Looking for a replacement differential controller with display for my 8 panel solar hot water system with 500 gal storage tank. This system is a collection of parts from two separate systems. I have been using the old "Independent Energy" controller for a year. Want an adjustable cut in/cut out setting, but it needs to work with the 10K sensors in the panels.

12-23-13, 07:40 AM	#2
Daox Administrator Join Date: Aug 2008 Location: Germantown, WI Posts: 5,525 Thanks: 1,162 Thanked 374 Times in 305 Posts	Welcome to the site. Are you looking for a DIY type solution (like an Arduino based controller), or a commercially made controller? __________________ Current project - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. & To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

12-23-13, 07:45 AM	#3
randen Uber EcoRenovator Join Date: Apr 2011 Location: Strathroy Ontario Canada Posts: 657 Thanks: 9 Thanked 191 Times in 129 Posts	Little Drummer Boy I've had very good luck with items found on E-bay out of China. There are several nice units avalible. Check Solar Hot Water. I have the packages mailed to my address without a problem. The quality is good for the items I had purchased. Could you post some photos of you solar heating system. Your system of eight panels is a good size. How much of a impact are you making on your heating requirements? What is the sq.ft. you are servicing? How long have you had your system operating. We are in Ontario Canada last year we hadn't collected much as cloud cover was the theme for the winter. And this year the season has started the same. Hopefully in Osh. your enjoying more sun. P.S. We have enjoyed for many years the fly-in!! Randen

12-23-13, 10:55 AM	#4
Mikesolar Master EcoRenovator Join Date: Aug 2012 Location: Toronto Posts: 958 Thanks: 40 Thanked 158 Times in 150 Posts	I use Resol, almost exclusively (300+ installs), it is good quality and has a lot of built in schematics for different types of systems.

12-29-13, 08:03 PM	#5
Little drummer boy solar hot water recycler Join Date: Dec 2013 Location: Oshkosh, WI. Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts	I'm looking for a commercial/complete unit, preferably a vari-speed output for the pumps. My system heats a 2100 sq. ft. residence with a water-to air A coil on top of the forced air furnace. (A- coil also cools the home with well water during the summer months.) A second use of solar heat is a suspended fin tube coil in the storage tank which preheats the domestic water before the W. heater receives it. The gas water heater was turned off from last May to Sept. because of steady tank temps. above 120 deg. F. This system went online one year ago November. During the Dec. though Feb. days the tank temp. is usually too low to provide much temperature rise for the A-coil to do anything. Panels are set at 65 degree tilt for winter heating.