Hi, first-time poster here,

My 15,000-gallon pool and spa (2" piping) just got a new Hayward system (Ecostar 3400 VSP, ProGrid DE 6020 and 400 BTU heater mostly used for the spa) and my Polaris 380 just got a new PB4-60 booster pump that uses 1.5" piping.

Can I safely run the VSP at full speed (3450rpm) for the spa or with auto priming, or should I set it at a lower speed (if so, how much?) and with a 3 Minute Prime? (From manual: "It is recommended to set the maximum speed in order to not exceed the maximum flow rate[ of 80 GPM for 2" piping]" but I have no idea if that's a hard requirement or just a soft recommendation and what speed provides 80 GPM.)

Can the DE filter and heater (and the rest of the pool system) take the flow output by the Ecostar at full speed?

Thanks!