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NOTE: This manual assumes you are familiar with both the geothermal heat pump and the original flow
center you are repairing. Detailed wiring information may be different for each heat pump
manufacturer's equipment. Refer to the heat pump manufacturer's literature for additional information.
Review the following Geo-Flo documents to understand the function of the 3-way 4-position flushing
and service valves and flushing procedures when replacing a pump:
Pressurized flow centers: Document #2122: Pressurized Flow Center Installation, Operating, and
Maintenance Instructions
Non-pressurized flow centers: Document #3761: NP Series Non-Pressurized Flow Center Installation,
Operating, and Maintenance Manual AND Document #3866: NPD Series Dual-Circuit Non-Pressurized
Flow Center Install., Operating, & Maintenance Manual
Geo-Flo Corporation
905 Williams Park Drive
Bedford, Indiana 47421, U.S.A.
Doc # 5174
Revision 2024JAN10
Installation Manual
Insulated UPMXL 25-124 Add-on Kits
Main Number: 812-275-8513
Toll Free: 800-784-8069
Fax: 888-477-8829
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Table of Contents
Related Manuals for Geo-Flo UPMXL 25-124
Summary of Contents for Geo-Flo UPMXL 25-124
- Page 1 Detailed wiring information may be different for each heat pump manufacturer’s equipment. Refer to the heat pump manufacturer’s literature for additional information. Review the following Geo-Flo documents to understand the function of the 3-way 4-position flushing and service valves and flushing procedures when replacing a pump:...
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Page 3: Table Of Contents
Flush procedure non-pressurized single circuit HP flow centers, single pump Flush procedure non-pressurized single circuit HP flow centers, double pump Flush procedure non-pressurized dual circuit flow centers, NPD products Replacement flow center cross reference Insulated UPMXL 25-124 Add-on Kits | 3... -
Page 4: Background
Grundfos Pumps Corporation discontinued production of the variable speed Magna GEO 32-140 ECM pump in 2019. Geo-Flo purchased a large quantity of these pumps to cover anticipated Magna GEO flow center warranties, but the supply has been depleted. Since the life of a flow center is typically much longer than the warranty period, we developed two kits to allow customers to update their existing flow center with the variable speed UPMXL 25-124 ECM pump to prevent a total flow center replacement. - Page 5 Geo-Flo Part numbers that are affected by this pump change are shown in Table 1. Examples of these flow centers are shown in Figure 1. This list does not include all geothermal heat pump OEMs part numbers. Some OEMs have their own part numbers and installation manual; contact your Territory Manager or Distributor for more information.
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Page 6: Kit Descriptions
(1) #10 nut: used to connect insulated pump to angle bracket (1) Insulation elbow and plastic cap (2) Replacement O-rings: Used to replace O-ring on fitting that is removed from the flow center and reconnected to the insulated pump Insulated UPMXL 25-124 Add-on Kits | 6... - Page 7 (4) ¼” X 2-1/2” long lag screws: option to connect insulated pump to wall (2) Replacement O-rings: Used to replace O-ring on fitting that is removed from the flow center and reconnected to the insulated pump Insulated UPMXL 25-124 Add-on Kits | 7...
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Page 8: Required Fittings And Equipment
Flo-Link fittings as shown in Figure 4 are required for this procedure. The Geo-Flo Geo-Gooser tool (PN 3502) is useful in conjunction with the garden hose adapter (PN3248) when flushing pressurized flow centers. Review the flushing procedure sections of this manual for how these fittings are used. -
Page 9: Installation Procedure
8. Flush the heat pump and flow center using the flush procedure for the type of flow center you are repairing. After following the flush procedure, return to Step 9 below. 9. Energize the system. Insulated UPMXL 25-124 Add-on Kits | 9... - Page 10 12. Mark or tag the old Magna GEO pump with a notification that the pump has been decommissioned so that future technicians understand the pump is no longer intended to operate. Example: “THIS PUMP HAS BEEN DECOMMISSIONED AND REPLACED WITH THE UPMXL” Figure 5. Wiring for UPMXL pump. Insulated UPMXL 25-124 Add-on Kits | 10...
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Page 11: Flush Procedure Pressurized Flow Center
2. Carefully rotate the three-way valves to isolate the ground loop side of the system from the heat pump side. To avoid air entering the ground loop pipes, rotate the valves from the operating position (“OFF” toward the front of the flow center) 90 degrees ONLY to the ground loop Insulated UPMXL 25-124 Add-on Kits | 11... - Page 12 Then, rotate the 3-way valve that is connected to the water supply. 6. Turn off the water supply and remove the hoses. 7. Return to Step 9 of the Installation Procedure section of this manual. Insulated UPMXL 25-124 Add-on Kits | 12...
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Page 13: Flush Procedure Non-Pressurized Single Circuit Hp Flow Centers, Single Pump
Add make-up fluid to the tank as necessary. 5. Return the valves to the operating position and remove the jumper hose. 6. Return to Step 9 of the Installation Procedure section of this manual. Insulated UPMXL 25-124 Add-on Kits | 13... - Page 14 Figure 7. Single pump NP flow center installation and flush procedure Insulated UPMXL 25-124 Add-on Kits | 14...
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Page 15: Flush Procedure Non-Pressurized Single Circuit Hp Flow Centers, Double Pump
Add make-up fluid to the tank as necessary. 5. Return the valves to the operating position and remove the jumper hose. 6. Return to Step 9 of the Installation Procedure section of this manual. Insulated UPMXL 25-124 Add-on Kits | 15... - Page 16 Figure 8. UPMXL installation location and flush direction for double pump NP flow center. Insulated UPMXL 25-124 Add-on Kits | 16...
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Page 17: Flush Procedure Non-Pressurized Dual Circuit Flow Centers, Npd Products
5. Add make-up fluid to the tank as necessary. 6. Return the valves to the operating position and remove the jumper hose. 7. Return to Step 9 of the Installation Procedure section of this manual. Insulated UPMXL 25-124 Add-on Kits | 17... - Page 18 Figure 9. UPMXL installation locations and flush directions for NPD with a single Magna GEO for heat pump 1 and/or 2. Insulated UPMXL 25-124 Add-on Kits | 18...
- Page 19 Figure 10. UPMXL installation locations and flush directions for NPD with a Magna GEO in series with a UPS26-99 for heat pump 1, and a single Magna GEO for heat pump 2. Insulated UPMXL 25-124 Add-on Kits | 19...
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Page 20: Replacement Flow Center Cross Reference
Magna GEO flow center to the equivalent UPMXL flow center. Note that not all heat pump OEM part numbers are listed. Contact your OEM or distributor for more information. Insulated UPMXL 25-124 Add-on Kits | 20... - Page 21 OEM Module, GPC, Brass, Single, Magna FLW CNTR, FL1, UPMXL 25-124, 208-230V 1255 GEO 32-140 FL1L OEM Module, GPC, Brass, Double, 32- FLW CNTR, FL2, UPMXL 25-124 + UPS26-99, 1256 140+26-99 FL2M 208-230V FLW CNTR, NP1, UPMXL 25-124, 208-230V 1275...
- Page 22 Rev. 2024JAN10 Geo-Flo Corporation is continually working to improve its products. As a result, the design and specifications of products in this catalog may change without notice and may not be as described herein. For the most up-to-date information, please visit our website, or contact our Customer Service department.
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