My system requires 1.5 to 2 GPM per ton. Will more GPM mean more or less efficiency this winter? I can adjust the flow up to 16 GPM but is this helpful or less efficient? How much difference should I see between EWT and LWT? Is 7 degrees a good working number? System is WF Envision 049 4 ton water to air in open loop using my existing well. Location is in RI. Thanks in advance,
Increasing GPM above the recommended flow does nothing to add to efficiency. A 5 - 10° delta T between EWT and LWT is what we shoot for.