Doc # 5174
Revision 2024JAN10
Installaon Manual
Insulated UPMXL 25-124 Add-on Kits
NOTE: This manual assumes you are familiar with both the geothermal heat pump and the original ow
center you are repairing. Detailed wiring informaon may be dierent for each heat pump
manufacturer’s equipment. Refer to the heat pump manufacturer’s literature for addional informaon.
Review the following Geo-Flo documents to understand the funcon of the 3-way 4-posion ushing
and service valves and ushing procedures when replacing a pump:
Pressurized ow centers: Document #2122: Pressurized Flow Center Installaon, Operang, and
Maintenance Instrucons
Non-pressurized ow centers: Document #3761: NP Series Non-Pressurized Flow Center Installaon,
Operang, and Maintenance Manual AND Document #3866: NPD Series Dual-Circuit Non-Pressurized
Flow Center Install., Operang, & Maintenance Manual
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