Hot shower heat exchanger install

[machtig]

I have a Glind heat exchanger that is used for heating water for showering, dishes, etc. when overlanding or camping. It uses the vehicles coolant system to heat the fresh water side of the heat exchanger. The heat exchanger is typically plumbed into the heater core circuit of the vehicle but on our Raptors (and other 3.5 ecoboosts) there is a cabin heater coolant pump in the circuit (see diagram). Does anyone know under what conditions this pump is switched on. For the heat exchanger to function efficiently, there needs to be flow through it. I would assume the pump comes on if the cabin thermostat is high enough or maxed out hot which would be fine since one typically isn’t in the cabin while showering . I’ve searched the internet but can’t find any documentation on this aux coolant pump other than how to remove and install. @FordTechOne I would be most grateful with any insight you might provide.

 

[CoronaRaptor]

I know this isn't the answer, but it got me thinking about the future of vehicles, what will a person use when vehicles are electric? Could you not preheat a bucket of water with an electric heater?

 

[machtig]

There

I know this isn't the answer, but it got me thinking about the future of vehicles, what will a person use when vehicles are electric? Could you not preheat a bucket of water with an electric heater?

There are propane options but then you have to carry propane, plus the heating unit.

 

[FordTechOne]

The cabin heater coolant pump is used to provide coolant to the heater core when the HVAC system is requesting heat and the engine is in stop-start mode (engine off). So basically it’s just there to keep coolant flowing when the water pump isn’t turning.

 

[machtig]

Thank you sir. So during normal operation and idling coolant is flowing through the heater core circuit?

 

[FordTechOne]

Thank you sir. So during normal operation and idling coolant is flowing through the heater core circuit?

Yes, exactly.