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ALPHA 15-55 F/LC Cast Iron Circulator Pump (w/ Line Cord)
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59896832 has been discontinued
Discontinued July 24, 2018
This product was discontinued by the manufacturer.
MANUALS (3)
Direct Replacement:
ALPHA 15-58F Smart ECM High Efficiency Circulator Pump with Optimized Setpoint Control
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Product Highlights
–
115V
1/12 HP
Flanged x Flanged Connection
21 MAX GPM
150 MAX PSI
Cast Iron
Description
–
Grundfos is proud to introduce the next generation of energy efficient circulators - the Grundfos ALPHA. By incorporating a permanent magnet motor design, power consumption is now reduced by 50%. The Grundfos ALPHA adapts to the variable demands of the system without sacrificing comfort. Using the AUTOADAPT feature, the Grundfos ALPHA will analyze
the system and adjust to meet your heating demands.
Features:
Features:
- AUTOADAPT measures system changes automatically and maximizes energy savings
- Easy-to-use operation
- Select a mode with the touch of a button
- Easy-to-read LED display shows flow indication and power consumption
- Simple plug connections
- No wiring required
Specs
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| Material: | Cast Iron |
|---|---|
| Application: | Zoning |
| Horse Power: | 1/12 |
| Flow Range (GPM): | 0-21 |
| Max Flow (GPM): | 21 |
| Head Range (ft.): | 0-19 |
| Max Head (Ft): | 19 |
| Min Temp (F): | 36°F |
| Max Temp (F): | 230°F |
| Max Pressure (PSI): | 150 |
| Phase: | 1 |
| Voltage: | 115V |
| Amperage: | 0.65 |
| Type: | Var. Speed Pump |
| Connection Type: | Flanged x Flanged |
| Connection Size: | 3/4", 1", 1-1/4", 1-1/2" |
Questions?
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Call or text 888-757-4774
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Product Reviews
4.78 out of 18 reviews
100% would recommend this product
5 star
89%
4 star
0%
3 star
11%
2 star
0%
1 star
0%
Customer Images
Most Liked Positive Review
Well Worth The Money
This pump is silent, and efficient! 2-3 Gal/Mn while maintaining constant pressure and consuming 16W-18W. It moves water through 6 zone with 250' of 1/2" PEX in each zone.
VS
Most Liked Negative Review
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Ehh External control would make better
Simple, quite, and efficient are certainly all positive attributes of this pump. it would be better if it were possible to control speed via a control panel, external input, temperature control, delta-T control, or anything similar it would be a great pump. The auto mode does indeed work if you have multiple circuits connected to the pump that are opening or closing. however, if the pump is on a fixed circuit i give the auto mode low marks. picking a fixed flow or pressure gives more predictable results.
Showing 1-10 of 18 reviews
great package
cost effective, easy to install pump package
fitter
madison, wi
9 years ago
Verified Buyer
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Just what I have been looking for.
In floor heat multiple lines, speed changes as needed ,great. It also tells gallons per min.
Bob
Northern Minnesota
11 years ago
Verified Buyer
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Well Worth The Money
This pump is silent, and efficient! 2-3 Gal/Mn while maintaining constant pressure and consuming 16W-18W. It moves water through 6 zone with 250' of 1/2" PEX in each zone.
Chimp
Andover, MN
11 years ago
Verified Buyer
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So far so good
It's not heating season yet, but I have installed the Alpha. I've tested it and ran it in all of its modes. The smart mode seems to be pretty neat. It gradually ramps up when a zone valve opens until it gets to where it's happy and cruises along until the valve closes. The pump came with to gaskets and a flow check valve. Seems like a pretty nice pump.
Eric
Pa
12 years ago
Verified Buyer
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Performs amazingly.
Put it on high to purge the lines after swapping out, then put it on autoadapt. 6watts in idle, 9-14 watts at 1gpm 1 zone. 12-16 watts at 2 gpm 2 zones. Couldnt ask for more
D
Long Island, NY
12 years ago
Verified Buyer
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Alpha Pump for radiant heat
Had one on a 6 zone radiant floor heating system and found it was operating at the edge of its performance. It runs quietly, has options -3 speeds plus the self regulating feature which was ideal to balance the floor loops and zones. I am putting a pump in parallel to pick up a little flow when all 6 zones are on.
Bii
Bryson City,NC
13 years ago
Verified Buyer
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Great replacement for Taco 007
Easily replaced 007 circulaters between isolation flanges without having to re-plumb. Much quieter. As I'm "off grid" producing my own electricity with solar and wind, I'm stingy with every watt. The Alphas use less than a third (I measured both)than the 007 with the same GPM (I measured both).
Delivery was actually one day sooner than "promised". Great pump - great service - competitive price.
Off grid user
Upstate New York
13 years ago
Verified Buyer
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They Rock!
These pumps are great, I use them almost exclusively now. Set it on auto and it will match most any radiant load be it one small bath or the whole house. The GPM reading on the display is also an excelent troubleshooting feature, just one glance and you know there's flow. Oh, yeah they save about 60% on power consumption. The price has been coming down also. What else can I say, they rock!
Terry
White Salmon WA
13 years ago
Verified Buyer
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Ehh External control would make better
Simple, quite, and efficient are certainly all positive attributes of this pump. it would be better if it were possible to control speed via a control panel, external input, temperature control, delta-T control, or anything similar it would be a great pump. The auto mode does indeed work if you have multiple circuits connected to the pump that are opening or closing. however, if the pump is on a fixed circuit i give the auto mode low marks. picking a fixed flow or pressure gives more predictable results.
Reasonable Person
Washington
13 years ago
Verified Buyer
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ECM circulators are the way to go
This is a good ECM circulator offering three speed control and three pressure controls as well as their auto control. The average rating is when compared to other ECM pumps, not when compared to average circulators. I would have scored the pump 5 stars if it offered temperature control or an external analog speed control.
Craig
Washington
14 years ago
Verified Buyer
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Product Q&A
15 Questions15 Questions
Q: I currently have a 22 year old hydronic heating system that is using a B&G Series 100 pump. (1) Will an Alpha be suitable as a replacement? I am going to be adding another zone for DHW so the pump will now be operational 12 months a year. (2) Most plumbing diagrams show the pump on the supply end of the circuit, mine is currently mounted to a flage off the boiler on the return side..any issues with this configuration? There is plently of room for mounting in the right configuration. I also intend to leave the rest of the system set up as is...the t-stats operate the zone valves, end switches (wired parallel) turn on the boiler which energizes the pump. (3) This means that with each cycle the Alpha will de-energize till the next cycle...any issues with this set up? (4) The current piping is 1-1/4", is this just a matter of getting the right sized flange to make the connections? Thanks for the valuable help.
Asked by Tony 15 years ago
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Verified Reply- PexSupply StaffYou can use this pump to replace the Series 100 pump. You can install the pump on the return side.
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- Homer
JUST MAKE SURE THAT THE EXPANSION TANK CONNECTION TO THE SYSTEM IS ABOUT 12 PIPE DIAMETERS OF STRAIGHT PIPE BEFORE THE PUMP INTAKE FLANGE. Supply or Return location ok. Just plug the Alpha into an outlet and not into the Aquastat relay that turned the old B&G on and off. The Alpha runs all the time. It pays for itself in electricity savings, too.
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- Homer
Tony, I'm going to give this another go! Do you know what you're doing? Are you zoning with zone valves? Does the DHW have priority over heating? How are you going to accomplish priority. If the Alpha on the main heating and you have priority on the DHW tank, the Alpha can devote itself to heating the domestic hot water and then switch back to heating. Without priority both the tank and the heating system will operate and the recovery time maybe longer. Choose an Indirect tank that has 1" cupero-nickel heat exchanger (HX) as that reduces the pressure loss thru the tank and the size of the pump necessary to push water through the HX and it will give you a faster recovery time. You need to figure out your strategy.
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Q: does this pump contain an internal check valve? if so, could it be removed?
Asked by dusto 15 years ago
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Verified Reply- PexSupply StaffIt does, and it can be removed/replaced if necessary.
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Q: is the 1-1/4" mating flange required compatible with an existing Armstrong Astro30 1-1/4"?
Asked by sr 15 years ago
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Verified Reply- PexSupply StaffYes, they are.
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Q: what is the mateing flange part number for 1 1/4" npt
Asked by John 15 years ago
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Verified Reply- PexSupply StaffIt is part number 519603.
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Q: what is the flange size on the alpha pump? 1/2"?
Asked by wedeb 16 years ago
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Verified Reply- PexSupply StaffThe size flange needed depends on the specific application. For example, if you were connecting your flange to a 3/4" pipe, a 3/4" iron pump flange would be needed.
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