Hello all i just got a heatpump (hayward 140k btu) and want to install it my self (im electrician just not familiar with heatpumps), so the manual only shows electrical connections to the heatpump, in my case 220v. My question is shouldnt there be a connection between my pump and the heatpump for the heatpump to know when the pump is running or not running? My pump is on a 8h timer, what happens after the 8h are over and the heatpump is turned on? I know that when it detects low/no flow it turns off, is this the way it is meant to run?