laurence_penpol

It's better with a second coil. That's the way I will be going as my calorifier is in need of replacement. However, you don't need to...

Fit a second coil to your calorifier. Search for solar calorifier coil.

Aha, now I understand. Good point.

The expansion provision needs to be proportional to system volume. By adding the webasto system to the engine cooling circuit, you are...

But the Webasto circuit is open to the engine circuit on the return and the engine coolant circuit has expansion provision. There may be...

You still need to deal with expansion in the heating circuit when not using the engine. This is why an expansion vessel is a good idea...

My thought would be to insert a 3-port 12v diverter valve between the engine hot water output and the calorifier with the webasto hot...

There is no problem installing a hydronic system. You can connect the engine circuit in with the heating system, you just need...

Thanks. I think these are electrical immersion style? I’m on a swinging mooring on the river dart so don’t have power, so these wouldn’t...

Thanks but that's not the issue. I used to have a hot water system on a 27 ft installed by the previous owner - it was great! My plan is...

Hi everyone, I have just quoted a 33ft Sailing boat and am in the process of putting in some heating to make cruising a little more...