Larry bought 2 ECO-47-1500-20 panels and other components for his system at the end of 2006. For reasons of space he decided to use two hot water cylinders, his existing 130 litre tank and an additional 90 litre tank in the loft acting as a preheating system. He used a Resol AX controller to circulate water between them when the preheat cylinder was hotter than the main cylinder, and a BS Pro controller for the solar circuit. Larry opted to use separate components rather than a pump station. As can be seen from the photos, Larry has used a lot of ingenuity with this system. I like the idea of using magnets to make the carrier for the controllers removable for easy access. Note also the very robust stand he has made for one of the panels. Unfortunately we were out of stock of the flat roof stands when he needed one.
Here you can just see the panel on the flat roof of the garage.
Here is a close up view of a panel. Note the chains, in case of unexpectedly strong winds!
A neat job! This is the preheat cylinder, showing the two controllers, pump and the expansion tank.
This is a view of the magnetically mounted controller
panel. Larry writes:
Here are some additional views of the plumbing. Note how Larry used plastic trunking to keep the pipe runs neat.
Larry writes: "Three 15mm pipes running to outside wall,
in plastic trunking. Trunking is
mounted on length of wood scarfed down to provide slight slope to assist
system air removal. All pipework slopes for same reason.
Note that it is always good practice to lay pipework in such a way that there is a continuous slight slope up towards the air bleed point.
Larry needed one more tapping into his preheat tank than he had. He solved the problem with this neat adaptation of an immersion heater blanking plate.
Here are some close up pictures of the stand Larry made. Note the weight used to keep it in place.
Thanks to Larry for the pictures and information.
Larry has decided to modify his installation and mount his panels on his house roof to avoid a partial shading problem during a part of the day.
Larry installing the tubes in the new panel. Note
his safety harness attached to his chimney. He used a cardboard tube to
avoid any damage to the collector tubes while lifting them up to the roof.
The Heat Dump motorised valve in place in the loft.
The immersion heater thermostat Larry used to control his heat dump circuit.
This is the smaller preheat cylinder which Larry uses to feed his main hot water cylinder. He used this scheme mainly because there was no room for a single larger cylinder.
The main hot water cylinder.
The finished installation from the outside.
Thanks again for the update, Larry.
Send mail to
SW@eco-nomical.co.uk with questions or
comments about this web site.