There is a solar h/w system installed at my house (it was put in about 10 years ago, before we bought the place). Vacuum tubes on the roof, Vaillant Auromatic 560 controller. The solar heat is routed first choice to the Vaillant h/w tank and when that reaches the target temp it is diverted via a long pipe run to a secondary heat exchanger for a swimming pool.
It was all working well until recently, when the diverter valve got stuck in the open position. So now, when the tank reaches the configured temperature and the controller tells the valve to switch the heat flow to the pool, the command is ignored and the flow continues into the tank, leading to overheating.
The obvious thing to do would be to free up the valve. However, we no longer use the pool, so I would prefer to reconfigure the system to tell it we don't have a pool anymore, just a h/w tank. This would then mean the controller would automatically turn off the flow pump when the tank reached the desired temperature.
The problem is I can find no configuration parameter in any of the manuals that tells the system how many heat sinks there are. It just seems to know there are two. There is an option to say which one is top priority (the tank) but no option to remove the pool as a heat sink.
The only idea I have is to disconnect the temperature sensor from the pool (“SP 3” in the manual) at the controller. Perhaps if it detects no sensor it will treat the system as having just a h/w tank and nothing else ?
It was all working well until recently, when the diverter valve got stuck in the open position. So now, when the tank reaches the configured temperature and the controller tells the valve to switch the heat flow to the pool, the command is ignored and the flow continues into the tank, leading to overheating.
The obvious thing to do would be to free up the valve. However, we no longer use the pool, so I would prefer to reconfigure the system to tell it we don't have a pool anymore, just a h/w tank. This would then mean the controller would automatically turn off the flow pump when the tank reached the desired temperature.
The problem is I can find no configuration parameter in any of the manuals that tells the system how many heat sinks there are. It just seems to know there are two. There is an option to say which one is top priority (the tank) but no option to remove the pool as a heat sink.
The only idea I have is to disconnect the temperature sensor from the pool (“SP 3” in the manual) at the controller. Perhaps if it detects no sensor it will treat the system as having just a h/w tank and nothing else ?
