Hello everyone. I am looking for some help understanding variable pump speed settings and their effects on flow rate and my system overall. I am a new pool owner as of Summer 2022. Details of my system are in my signature.
Specifically, my questions are:
My filter system specifies a "design flow rate" of 150 GPM (I'm not sure if this is relevant but including it just in case).
My pump is a Hayward Tristar 2.7HP VSP. I am controlling it via a Hayward E-command so my options for speed settings are in percentages (100, 95, 90, etc) rather than actual RPMs.
I have been trying to research this but I get super confused about the relationship between feet of head and flow rate and pump speed, etc., etc. I haven't been able to figure this out to any degree of confidence so I'm hoping someone can. help.
Thank you in advance!
Specifically, my questions are:
- If my pump is running at its highest speed (which is where my builder set its "high speed" setting for both pool and spa), is it possible that the flow rate could be too high and do damage to any part of the system?
- Can I lower the "high speed" pump speed and, if so, how do I determine the appropriate speed to maximize efficiency but also to make sure my flow rate is within the parameters for my equipment (especially the heater)?
- Will this lowering of the speed have any effect on the pump's ability to self-prime and/or the effectiveness of "freeze protect" mode (which runs at the "high speed" setting)?
My filter system specifies a "design flow rate" of 150 GPM (I'm not sure if this is relevant but including it just in case).
My pump is a Hayward Tristar 2.7HP VSP. I am controlling it via a Hayward E-command so my options for speed settings are in percentages (100, 95, 90, etc) rather than actual RPMs.
I have been trying to research this but I get super confused about the relationship between feet of head and flow rate and pump speed, etc., etc. I haven't been able to figure this out to any degree of confidence so I'm hoping someone can. help.
Thank you in advance!