Hi. I recently had a Bosch 3 ton (SM036) geothermal unit installed. The setup is open loop "pump and dump". I'm finding that my installer was not much of an expert in open loop systems and I've had to correct some of his mistakes. I am not sure that he set the DIP switches correctly for open loop, as well as setting the right CFM which I understand should be at 1800 for a 3ton unit. Any information on the correct DIP/CFM settings would be appreciated. Thanks.