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Careful planning of your water system ahead of time will save a lot of headaches and possibly a lot of money in the future. Many people have called after they installed their pump, only to find out they will now need to purchase a larger inverter than they had planned on, or a transformer to run their new
230 VAC pump. We will be glad to help you with your water system design or talk to your well
person to explain why you need a 115 VAC 1/2 hp Grundfos SoftStart pump rather than the
230 VAC 1/2 hp pump
they have in their truck! When calling for help with your water system design please have the following information at hand:
l Type of Power System - 120 VAC or 12/ 24 VDC
l Horizontal
Distance from Well to Home
l Depth of Well
l Static Water Level (Distance from Ground Surface to Water Level in Well)
l Elevation from Top of Well to Home
l Pressurized System?
l Pipe Size (if already installed)
120V AC WATER PUMPING  Most locations in New England will require a deep well and a submersible pump. A
1500 watt Trace inverter will power a 115 volt soft-start AC submersible pump. If you already have a
230 volt pump you'll need the Trace T240
step up transformer (or a new pump). If you provide us with the
well specifications listed above, we will recommend the Grundfos model AC pump and wire size that you can take to your well pump installer. Our pumping design will be for your alternative energy home powered by a Trace inverter. The well man's design will be for a suburban home without an inverter. We sell efficient deep well pumps that are picked specifically to run on an inverter. We have good prices
and are well versed on these pumps. Buy one from us if you're at all uncertain as to which one to get from your well
person.
A submersible must be set at the proper depth. The Grundfos 115V pumps can be set up to 140' below the pressure tank. Often the pressure tank is at the same level as the top of the well so the above distances become the depth the pump is set in the well. If you must set your pump deeper than 140' you will need to use a 230 VAC pump with a T240 transformer unless you have more than one inverter. If you have a shallow or dug well you can use the 115VAC shallow pump shown below, or possibly a DC suction pump. Call for details and a design will work for you.
921-007 Shallow Well Pump
$429
1/2 hp 115v 5 gpm
Capacitor Start
Grundfos Soft-Start Pumps
Grundfos now makes the SQ line of submersible pumps noted for their ability to "soft-start" i.e. not draw any extra starting current. This means the Grundfos 1/2 hp SQ pumps can run reliably on a 1500 watt DR inverter. The SQ pumps will fit into a 3" well casing and are protected from dry running,
overvoltage, undervoltage and overtemperature. They are constructed of stainless steel with polymide vanes and valves.
Listed below are models from 1/3 to 1 hp which will pump a nominal 5 gpm from 40' to 500' at 30 to 50
psi. Of course the gpm varies with the depth and pressure required. The 1/3 and 1/2 hp pumps are available in 115 VAC models; all the pumps are available in 230 VAC
models
Trace Auto-Transformer
741-008
T240 4.0 kW Transformer $550
 Specially designed to step up modified sinewave inverter output to 240
VAC. A good solution for running 240 VAC equipment such as a large submersible pump. It can also be used to balance the output of a 240 volt 4 kW generator to achieve full 120 volt 30 amp output.
Note: AC water pumping is continued on the next web page. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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