Eithneangela
Registered User
- Messages
- 936
Hi Optimistic,
What size is your cylinder... your system is clearly underperforming.
What makes are your panels and what is your roof orientation?
Optimistic,
From your reply, I am guessing that you are talking here about solar providing heat to an 800Ltr buffer tank that is also supplied by the WPB, this in turn is heating underfloor I assume?
How is the DHW plumbed in to the circuit?
The data from my installation is DHW ONLY, i use oil for heating.
As a matter if interest I had a very similar problem to yours when mine was first installed, it turned out that the sensor for the panels was not actually in the sensor pocket, but was measuring effectively free air temp (due to a manufacturing fault), this was easily rectified, but I found out about it by accident. Basically, solar systems are incredibly simple, but are completely reliant on the sensors to make them work effectively. You are saying that you never get more that 40 deg on the panels, are you sure about this? Have you chanced this with an independent temp monitor?
The simple way to find out if your panel sensor is not reading correctly is to take the bottom of tank sensor out (it should be simply slid into the sensor pocket) and see if the temp in the tank rises above the temp your roof sensor is reading, this will tell you that the panel is in fact higher than the reading you are seeing. This was how i found out about my problem.
Send me a PM if you want more details about this
Gtec
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