Hello! I would like to upgrade to a variable speed pool pump.
Here are my design priorities:
#1 - Currently I have a single-speed 3/4 hp Whisperflo with a S.F. of 1.25, or about 0.94 THP. The smallest Pentair VS is 1.5 hp or 2.0 THP. I realize being variable speed, you don’t need to run at full power, but I want full power to be low enough that it doesn’t do any damage to my system since it’s not a question of if, but when, it might get accidentally set to the highest RPM. Should I be worried?
#2 - I keep my pool open year-round and would like to have a thermal switch kick on the pump for freeze protection. Is this possible with a VS motor since the controls are integrated right into the unit?
#3 - This might be a dumb question, but are all pumps by all manufacturers designed to “fit” in the same place if replacing an existing one?
Here is my current setup:
2” pipe
TR-60 sand filter with a filter flow rate of 63 gpm
45 avg ft of head
14,000 gallon in-ground which would be fully cycled after 8 hours @ 30 gpm
Thank you guys as always for your wise counsel!
Here are my design priorities:
- Quiet operation
- Reliability (proven brand / model)
- Ease of fitting into existing plumbing
- Energy efficiency
- Ergonomics / ease of accessing controls (since VS motors have the timers built-in)
#1 - Currently I have a single-speed 3/4 hp Whisperflo with a S.F. of 1.25, or about 0.94 THP. The smallest Pentair VS is 1.5 hp or 2.0 THP. I realize being variable speed, you don’t need to run at full power, but I want full power to be low enough that it doesn’t do any damage to my system since it’s not a question of if, but when, it might get accidentally set to the highest RPM. Should I be worried?
#2 - I keep my pool open year-round and would like to have a thermal switch kick on the pump for freeze protection. Is this possible with a VS motor since the controls are integrated right into the unit?
#3 - This might be a dumb question, but are all pumps by all manufacturers designed to “fit” in the same place if replacing an existing one?
Here is my current setup:
2” pipe
TR-60 sand filter with a filter flow rate of 63 gpm
45 avg ft of head
14,000 gallon in-ground which would be fully cycled after 8 hours @ 30 gpm
Thank you guys as always for your wise counsel!