Hello, My name is Rick and I need some assistance with a pump selection for residential use for our off-grid home. Since this is our only water source, high reliability is a prime concern.
Current specifications are as follows:
*15,000 gallon rain catchment tanks (3) 1 ½†pvc from bottom of tank (with foot valve at end of pipe) to house – 36 ft.
*Under slab to mechanical room 18 ft. in 1†Pex
*Total vertical rise - tank foot valve to pump location in house – 11 ft.
*Total horizontal run – tank to mechanical room – 54 ft.
*House will have 80-85 gallon Flexcon pressure tank with a drawdown of 27.6 to 29 gal.
*House piping will have 45 psi minimum pressure
*Calculated water usage – 40 gallons/day
Pump will run off the house PV array of 1.4 kV (with back-up generator), so low power consumption or short duration is required. We have the capability to run 120/240 AC or 24vdc. Low noise is also a factor, since unit will be mounted in mechanical room in house.
I have looked at Shurflo AC (2088), but have doubts that it is powerful enough to do the job, as I am on the 'outer' limits of it's 9-12' capacity. I am currently looking at Grundfos pumps, but since I am new to this arena, I don't know all the answers! Will the Grundfos MQ series work with a stand alone pressure tank, or would the jet pump series be a better choice?
I am open to and would greatly appreciate any advice, ideas and suggestions that you may be able to offer.
Thanks!
Current specifications are as follows:
*15,000 gallon rain catchment tanks (3) 1 ½†pvc from bottom of tank (with foot valve at end of pipe) to house – 36 ft.
*Under slab to mechanical room 18 ft. in 1†Pex
*Total vertical rise - tank foot valve to pump location in house – 11 ft.
*Total horizontal run – tank to mechanical room – 54 ft.
*House will have 80-85 gallon Flexcon pressure tank with a drawdown of 27.6 to 29 gal.
*House piping will have 45 psi minimum pressure
*Calculated water usage – 40 gallons/day
Pump will run off the house PV array of 1.4 kV (with back-up generator), so low power consumption or short duration is required. We have the capability to run 120/240 AC or 24vdc. Low noise is also a factor, since unit will be mounted in mechanical room in house.
I have looked at Shurflo AC (2088), but have doubts that it is powerful enough to do the job, as I am on the 'outer' limits of it's 9-12' capacity. I am currently looking at Grundfos pumps, but since I am new to this arena, I don't know all the answers! Will the Grundfos MQ series work with a stand alone pressure tank, or would the jet pump series be a better choice?
I am open to and would greatly appreciate any advice, ideas and suggestions that you may be able to offer.
Thanks!