Description
The Grundfos 99059799 (CM 15-3 A-S-I-E-AQQE E-A-A-N) is a End-suction close coupled multistage 8.58HP 208-230YY/440-480YV 3-Phase — CM is a reliable, quiet and compact horizontal end-suction pump. The modular pump design makes it easy to make customized solutions. CM is available in cast iron and stainless steel.. Nominal performance: 89.8US gpm at 197.4ft. Designed for HVAC: Heating, HVAC: Air Conditioning, Plumbing: Pressure Boosting and 21 more.
Why This Product
Wet-Rotor Construction — No External Bearings
Wet-rotor design runs the rotor in the pumped fluid — the fluid lubricates and cools the rotor bearings directly. No external bearings, no bearing lubrication, no bearing replacement. Service life of 20,000+ hours in normal HVAC service.
AutoAdapt — Automatic Speed Optimisation
AutoAdapt technology continuously adjusts pump speed to match the actual heating demand of the system — reducing energy consumption by 30-50% compared to fixed-speed circulators in typical residential and commercial heating systems.
IE5 Ultra-Premium Efficiency
IE5-rated permanent magnet motor exceeds the requirements of IE4 Super Premium. At typical HVAC partial-load operating points, IE5 efficiency is maintained at speeds well below the design point — unlike induction motors that lose efficiency at reduced speed.
Compact In-Line Design
Compact in-line design fits directly into existing pipework — no baseplate, no special support, no change to pipe routing. Flanged and threaded connection options for direct retrofit of existing circulators.
Low Noise — Suitable for Residential Installation
Wet-rotor design with no mechanical bearings in air produces significantly less noise than dry-rotor pumps. Grundfos circulators are rated for residential mechanical room and under-floor installations where noise is a concern.
Grundfos GO App Integration
Compatible with the Grundfos GO mobile app for wireless commissioning, pump setting, and energy data review — no special tools or proprietary interface equipment required for installation, commissioning, and service.
| Nominal Flow | 89.8US gpm |
| Nominal Head | 197.4ft |
| Max Operating Pressure | 232.06psi |
| Max Fluid Temperature | 248°F |
| Max Ambient Temperature | 131°F |
| Power | 8.58HP |
| Voltage | 208-230YY/440-480YV |
| Phase | 3-Phase |
| Frequency | 60 Hz |
| Motor Speed | 3530-3550rpm |
| Pump Speed | 3480rpm |
| Full Load Current | 23,6-22,8/11,6-11,6A |
| Motor Efficiency Class | IE3 / NEMA Premium |
| Min Efficiency Index (MEI) | 0.59 |
| Insulation Class | F |
| Protection Class (IP) | IP55 |
| Inlet Connection | 2inch |
| Outlet Connection | 2inch |
| Pipe Standard | NPT(F) |
| Impeller Material | Stainless steel |
| Housing Material | Stainless steel |
| Shaft Seal | AQQE |
| Model Number | 99059799 |
| Product Series | CM 15-3 |
| Model Code | CM 15-3 A-S-I-E-AQQE E-A-A-N |
| Approvals / Certifications | CE, EAC, CURUS, UKCA |
| Electrical | Requires correctly rated supply — 208-230YY/440-480YV, 3-Phase, 60 Hz. Install with correctly rated circuit protection and motor starter. |
| Temperature limits | Do not exceed max fluid temperature 248°F or max ambient temperature 131°F. Operating outside these limits will damage seals and motor insulation. |
| Dry running | Do not run dry. CM 15-3 pumps use the pumped fluid to lubricate the shaft seal — dry running destroys the seal within seconds. Install dry-run protection on all automatic installations. |
| Maintenance | Refer to the Grundfos Installation and Operating Manual (IOM) for correct installation, commissioning, and maintenance intervals. Contact PumpStop for documentation. |
Motor Curves
Dimensional Drawing
DWiring Diagram
GRUNDFOS CM/CME (Horizontal multi-stage pumps up to 8.4 HP) (Product brochure)
OPTIMIZED INDUSTRIAL SOLUTIONS (Product brochure)
COMPREHENSIVE WATER TREATMENT SOLUTIONS (Product brochure)
FOOD PROCESSING, PUMPS FOR INDUSTRY (Product brochure)
DBS, GRUNDFOS RESIDENTIAL BUILDINGS (Product brochure)
CME-Plus Kit Assembly, 60 Hz, North America (Installation and operating instructions)
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