I’m adding a D5 hydronic Espar into my Sprinter that did not originally come with a pre heater. The main reason I’m doing this is not for pre-heating but for aux rear heat and hot water without idling. It looks like my current heat exchanger routing comes off the intake manifold goes to a circulation pump then T’s to go to the heater core and the water valve then the heater core goes to the water valve from the water valve it goes to the water pump. What is the function of the water valve and how does it work?
I’m thinking of tying the system in like this:
Stock: Intake Manifold > Recirculation pump > T to bypass heater core > heater core > water valve > water pump
W/ Espar: Intake Manifold > Recirculation pump > Espar > rear heat exchanger > water heater > T to bypass heater core > heater core > water valve > water pump
I’m going to run a bypass with a ball valve with T fittings at the in/out of the hot water tank and the aux heat exchanger. This way if the ball valve is open the water will mostly flow around the hot water or rear heat exchanger when not in use.
Anyone have any suggestions or recommendations? I’ve never installed one of these and want to get it right. I’m concerned about keeping my stock cooling system working properly with the recirculation pump and water valve.
I’m thinking of tying the system in like this:
Stock: Intake Manifold > Recirculation pump > T to bypass heater core > heater core > water valve > water pump
W/ Espar: Intake Manifold > Recirculation pump > Espar > rear heat exchanger > water heater > T to bypass heater core > heater core > water valve > water pump
I’m going to run a bypass with a ball valve with T fittings at the in/out of the hot water tank and the aux heat exchanger. This way if the ball valve is open the water will mostly flow around the hot water or rear heat exchanger when not in use.
Anyone have any suggestions or recommendations? I’ve never installed one of these and want to get it right. I’m concerned about keeping my stock cooling system working properly with the recirculation pump and water valve.