Shut_Off

Shut off valves. By blocking the coolant flow when heating is not required, there is no possibility of the heater core heating the HVAC Box. This allows the AC to work as efficiently as possible. The two valves also isolate the heater core if required. I also put two Ball valves in the coolant lines to the House water heater. (Stop the massive amount of heat that is added to the bath module) You might notice that I created an aluminium baffle to change the HVAC Box to have 100% recirculate when the controls are set to Recirculate.