Quote:
There's been a lot of talk about how the EWP kills the heater, but a very basic mod will get it working again if you use the DC controller.
The DC controller allows a faster warmup than even a thermostat can produce, so intrinsically, there's no reason for the heater NOT to work. The reason is to do with flow! By moving the pump upstream into the bottom hose, you ruin the heater circulation path. So the simple cure is to blank the heater return spigot in the water pump housing and tee it into the bottom hose between the EWP and the bottom of the rad. With correct circulation restored the heater will work just fine!
Steve
The rejigging of the heater hose is required.
A remote thermostat in the top hose will allow the cooling system to work properly.
According to John Benson from Davies Craig their controllers are unsuitable for the European temperate climate
and he is right.
However they do have a method to fool the cooling system into working "normally" which involves spinning the pump without
any coolant flow (hence the very short working life of their pumps).
Compared to a Stewart pump, Davies Craig products are incredibly poor value.
Ian.