Technical fitting a calorifier for my hot water system

[proppb]

I know this is off topic but you guys are the most knowledgeable people I know about our dual egr engine.
I am converting a 2018 van to a campervan and am considering fitting a calorifier for my hot water system.
It would be located in the back of the van, and it would suit me to tie into the engine coolant system to the underside rear of the engine.

Does anyone know if there any suitable pipes I can break into back there, I was thinking there might be something to the lpegr cooler?

 

[deejays]

@proppb this is really off topic and should be in another thread, but if you are thinking of doing that I would steer well clear of the LPEGR circuit. I would think the best place to tap in would be the cabin heater circuit. The issue you are going to have is heat and flow loss if the unit is going to be placed at the rear of the van. Also, the reliability of the coolant system could be compromised if a hose comes adrift. Why would you not install a diesel fired HWS instead - independent, does not rely on an engine running/up to temperature etc?

 

[MSjoberg]

You might find some food for thoughts in sections 2.47 - 2.49 here:

Ducato X290 Converters’ and Upfitters’ Manual

Converters manual for the post-2016 Ducato. Lots of technical information, including some very useful wiring and electrical diagrams.

www.fiatforum.com

 

[Communicator]

I cannot understand why the subject of this thread should be considered off topic, if originally posted in the Motorhomes / Campervans section.

As regards the connection of a calorifier into the cooling system, my thoughts would be to connect into cab heater circuit, as was suggested deejays.

On several of our visits to NZ during the previous decade, we hired KEA converted PVCs. These PVCs were fitted with boat boilers, which while coupled into the engine cooling circuit, also contained an electric heating element. The "boiler" was sited roughly half way along the vehicle, hence keeping the connections to the engine cooling circuit shorter than if it was sited at the rear. This arrangement worked fine if touring or using a site with EHU.
However if using a small back country site as a base for a days hike, or similar activity, there could be a problem.

I hope that the above provides some food for thought.

 

[jackwhoo]

I cannot understand why the subject of this thread should be considered off topic, if originally posted in the Motorhomes / Campervans section.

As regards the connection of a calorifier into the cooling system, my thoughts would be to connect into cab heater circuit, as was suggested deejays.

On several of our visits to NZ during the previous decade, we hired KEA converted PVCs. These PVCs were fitted with boat boilers, which while coupled into the engine cooling circuit, also contained an electric heating element. The "boiler" was sited roughly half way along the vehicle, hence keeping the connections to the engine cooling circuit shorter than if it was sited at the rear. This arrangement worked fine if touring or using a site with EHU.
However if using a small back country site as a base for a days hike, or similar activity, there could be a problem.

I hope that the above provides some food for thought.

It was originally in the thread devoted to twin egr error codes. A mod moved it here