I'm in the second year of using my Hayward VSP (SP2603VSP). I got it mid-season last year. So this year I'm looking to optimize the operation of it. So here is some data first. The percent % is the percent of max rpms. While many here like to list rpms, I visualize better if I read % instead of rpms. The max rpms for this pump is 3450 rpm. Flow rate measured with FlowVis.
% rpm Watts Flowrate (gal/min)
100 1230 55
89.9 903 48
75.4 535 42
60.1 292 34
52.2 196 30
44.9 132 25
35.5 78 18
25.4 39 10
17.4 21 8
I have a heat pump. It shuts off when the percent rpm drops below 34.8 and won't turn back on until it reaches 50%. The SWG stops generating below 29% max rpm. Okay I'm looking at two operating scenarios - spring/fall season and summer season. To answer the question why two different scenarios, the pool operation differs between the two. During the spring/fall season, a bubble solar cover is on the pool whenever the pool is not in use. During the summer season, I store the solar cover away. Also the heat pump is generally running during the spring/fall season but not during the summer season. Another important operation requirement is the VSP must run at a high enough speed to run the heat pump between 4:30am-6:00am and during the warmer part of the day. The earlier time is because my wife swims laps at that time of the morning.
One question is do I really care if the SWG is not generating during the night. If not, I can run the VSP all the way down to the lowest setting. I don't turn the VSP off completely so I avoid the priming at 4:30am. For the spring/fall, I don't run a high speed session for skimming since the solar cover floating on the water doesn't let the debris float to the skimmer.
For spring/fall season, I'm thinking of running at 52.2% max rpm during 4:30-6:00am and then again from 9:00am-7:00pm. At all other times run at its lowest setting which is 17.4% max rpm. I could squeeze a few less watts out if I programmed the VSP to lower the speed down below 52.2% once the heat pump starts but above 34.8% to keep it running. Probably not worth it and also I have not looked up optimal flow rate for the heat pump.
For the summer season, the heat pump is not important and the solar cover is removed. I just need to stay above the flow rate needed for the SWG. I may also want to program one or two higher speed periods (morning and evening) for skimming anything floating in the pool. The question here is do I really need the higher speed skimming runtime. I could make it simple on myself by not reprogramming the VSP.
% rpm Watts Flowrate (gal/min)
100 1230 55
89.9 903 48
75.4 535 42
60.1 292 34
52.2 196 30
44.9 132 25
35.5 78 18
25.4 39 10
17.4 21 8
I have a heat pump. It shuts off when the percent rpm drops below 34.8 and won't turn back on until it reaches 50%. The SWG stops generating below 29% max rpm. Okay I'm looking at two operating scenarios - spring/fall season and summer season. To answer the question why two different scenarios, the pool operation differs between the two. During the spring/fall season, a bubble solar cover is on the pool whenever the pool is not in use. During the summer season, I store the solar cover away. Also the heat pump is generally running during the spring/fall season but not during the summer season. Another important operation requirement is the VSP must run at a high enough speed to run the heat pump between 4:30am-6:00am and during the warmer part of the day. The earlier time is because my wife swims laps at that time of the morning.
One question is do I really care if the SWG is not generating during the night. If not, I can run the VSP all the way down to the lowest setting. I don't turn the VSP off completely so I avoid the priming at 4:30am. For the spring/fall, I don't run a high speed session for skimming since the solar cover floating on the water doesn't let the debris float to the skimmer.
For spring/fall season, I'm thinking of running at 52.2% max rpm during 4:30-6:00am and then again from 9:00am-7:00pm. At all other times run at its lowest setting which is 17.4% max rpm. I could squeeze a few less watts out if I programmed the VSP to lower the speed down below 52.2% once the heat pump starts but above 34.8% to keep it running. Probably not worth it and also I have not looked up optimal flow rate for the heat pump.
For the summer season, the heat pump is not important and the solar cover is removed. I just need to stay above the flow rate needed for the SWG. I may also want to program one or two higher speed periods (morning and evening) for skimming anything floating in the pool. The question here is do I really need the higher speed skimming runtime. I could make it simple on myself by not reprogramming the VSP.
