Bell & Gossett 179296LF E9023T 1AAB Series e-90 Pump
Product Overview
The Bell & Gossett 179296LF represents the next generation of commercial hydronic efficiency with its e-90 Series circulator featuring advanced Electronically Commutated Motor (ECM) technology. This high-performance pump is engineered for commercial and institutional HVAC systems where energy savings, precise flow control, and reliable operation are critical requirements.
Utilizing sophisticated ECM technology, this circulator automatically adjusts its speed to match exact system demands, reducing energy consumption by up to 80% compared to conventional fixed-speed circulators. The durable cast iron construction ensures long service life in demanding commercial environments, while the wet-rotor ECM design provides exceptionally quiet operation—making it ideal for noise-sensitive applications like hospitals, schools, and office buildings. With built-in constant pressure control and diagnostic capabilities, the e-90 Series delivers intelligent pumping solutions for modern building automation systems.
For consulting engineers, facility managers, and contractors designing high-efficiency hydronic systems, the Bell & Gossett e-90 provides the smart technology and commercial-grade reliability needed to meet today’s energy standards and performance expectations.
Technical Resources & Guides
Technical Specifications
| Specification Category | Detail |
|---|---|
| Manufacturer Part Number | 179296LF |
| Series | Bell & Gossett e-90 Series |
| Model | E9023T 1AAB |
| Motor Technology | ECM (Electronically Commutated Motor) |
| Housing Material | Cast Iron |
| Connection Size | 2″ Flanged |
| Connection Type | Flanged |
| Maximum Working Pressure | 175 PSI / 12.1 Bar |
| Maximum Temperature | 240°F / 116°C |
| Speed Control | Variable Speed (Auto-Adapting) |
| Control Options | Constant Pressure, Constant Speed |
| Protection Rating | IP42 |
| Communication | Building Automation Ready |
🖼️ IMAGE: [bell-gossett-e90-control-interface.jpg]
Alt-text: *Close-up of Bell & Gossett e-90 Series pump control panel showing display and adjustment buttons.*
What’s Included
| Included | Not Included / Required Separately |
|---|---|
| ✓ Complete ECM Circulator Assembly | ✗ Isolation Valves |
| ✓ Cast Iron Housing with ECM Motor | ✗ Flange Gaskets/Bolts |
| ✓ Integrated Control Electronics | ✗ Power Connection Kit |
| ✓ Installation & Programming Guide | ✗ Communication Module (if needed) |
| ✓ Factory Testing Documentation |
🛠️ Recommended for a Complete Installation
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Isolation: Bell & Gossett 2″ Flanged Isolation Valves
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Control: BMS Interface Module
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Monitoring: System Pressure Sensors
Comparison Table: e-90 Series vs. Traditional Circulators
| Feature | Bell & Gossett e-90 | Standard Fixed-Speed | Multi-Speed Circulator |
|---|---|---|---|
| Energy Efficiency | Excellent (Up to 80% savings) | Poor | Good |
| Control Precision | Variable Speed, Auto-Adapting | Fixed Speed | Limited Steps |
| Operating Cost | Lowest | Highest | Moderate |
| Noise Level | Very Quiet | Moderate | Moderate |
| Smart Features | Advanced Diagnostics & Control | None | Basic |
| ROI | Excellent (1-3 year payback) | N/A | Good |
Frequently Asked Questions (FAQs)
Q1: How does ECM technology achieve such significant energy savings?
A: ECM motors use permanent magnet technology and microprocessor control to precisely match motor speed to system demand. Unlike fixed-speed pumps that run at constant full power, ECM circulators reduce speed when full flow isn’t needed, dramatically cutting energy consumption while maintaining optimal system performance.
Q2: What control strategies are available with the e-90 Series?
A: The pump offers multiple control options:
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Constant Pressure: Maintains set differential pressure
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Constant Speed: Fixed speed operation
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Auto-Adapting: Automatically optimizes for system conditions
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BMS Integration: External control via building automation
Q3: Is professional programming required for this circulator?
A: While the pump includes auto-adapting technology for basic operation, professional programming is recommended to:
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Optimize energy savings for specific system characteristics
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Integrate with building automation systems
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Set up advanced control strategies
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Maximize system performance and efficiency
Q4: What maintenance does an ECM circulator require?
A: ECM circulators require minimal maintenance:
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Periodic visual inspection for leaks
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Ensuring clean system fluid quality
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Verification of proper operation through system monitoring
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Software/firmware updates as available
Q5: Can this pump be integrated with building automation systems?
A: Yes, with optional interface modules, the e-90 Series can communicate with most modern BMS systems using protocols like BACnet MS/TP or Modbus, allowing for remote monitoring, control, and data collection.
Internal Link: Learn more about optimization in our ECM Pump Technology Guide.
Pros and Cons
| Pros | Cons |
|---|---|
| Significant Energy Savings: Up to 80% reduction in energy use | Higher Initial Cost: Premium price compared to standard circulators |
| Precise System Control: Maintains optimal performance conditions | Complex Programming: Requires expertise for advanced features |
| Quiet Operation: Advanced ECM technology minimizes noise | Electronic Sensitivity: Vulnerable to power quality issues |
| Smart System Integration: BMS compatible for building automation | Professional Support Needed: Optimization requires specialist knowledge |
| Excellent ROI: Rapid payback through energy savings | Limited Repair Options: May require factory service for electronics |
Conclusion & Ideal Use Case
The Bell & Gossett 179296LF e-90 Series circulator is engineered for modern commercial HVAC systems where energy conservation, precise control, and intelligent operation are essential requirements.
This circulator is perfectly suited for:
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Commercial Office Building HVAC Systems
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Hospital and Healthcare Facilities
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University and School Campus Buildings
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LEED-Certified and Green Building Projects
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Retrofit Projects Replacing Old Fixed-Speed Pumps
If you’re designing or maintaining a commercial hydronic system where reducing operating costs, meeting energy codes, and optimizing system performance are priorities, the Bell & Gossett e-90 Series delivers intelligent, efficient circulation solutions with proven reliability.
🔗 Official Technical Resource
For complete technical specifications, wiring diagrams, and programming manuals, visit the Bell & Gossett e-Series Product Documentation for the most accurate and up-to-date information.
