You tapped into the engine heater hoses under the hood?
I thought the system was dual heat and hot water off one boiler. So basically your hot water in the sink runs thru the floor first. I was thinking to my self that's a long run for the hot water to be running.
But slap my head, the floor system would be a bear to drain thus needs to be protected with antifreeze. And running it thru the engine block acts like a block warmer in the winter. Along with almost free floor heat while the engine is running.
Does the engine running hot water thru the boiler help heat the potable water.
Glen,
Yes, I tapped the engine on the inlet side of the sprinter heater core.
There's really 3 different heat sources,the diesel boiler, the sprinter engine and a 120V coil in the expansion tank.
The engine loop is isolated from the boiler loop by a heat exchanger under the hood.
So when the engine is running, heat is provided by the engine, both for cabin heat and hot water.
When the engine is off, heat and hot water are generated by the diesel boiler.
When plugged into shore power a limited amount of heat and hot water can be generated by a 120V coil in the expansion tank, that can be supplemented by the diesel boiler as needed.
Also, the pump on the engine loop is normally off, because the engine water pump provides the circulation.
The engine loop pump is only used when the engine needs to be warmed up by the boiler for starting in the winter.
Lastly, the domestic water system is isolated from the boiler loop by a double wall heat exchanger.
Yes, the boiler loop, including the floor coil will be freeze protected with glycol.
Royce