Caldera Low Flow Replacement Heater 5.5kW – 90° Toward Electrical
Model: E2550-0101
Product Overview
As a retailer of hot tub spare parts, I’m featuring this specialized vertical low-flow replacement heater designed for Caldera spa systems. This 5.5kW unit features a unique 90-degree barb configuration oriented toward the electrical connections, with stainless steel construction for specific installation requirements.
Key Features
- Professional-grade 5.5kW heating element
 - Stainless steel construction
 - Vertical design orientation
 - 90-degree barb toward electrical
 - External thermowell ports
 - 230V operation
 - Custom flow design
 
Technical Specifications
| Specification | Detail | 
|---|---|
| Model Number | E2550-0101 | 
| Power Rating | 5.5kW | 
| Voltage | 230V | 
| Connection Size | 3/4″ barb | 
| Construction | Stainless steel | 
| Design | Vertical low flow | 
| Barb Configuration | 90° toward electrical | 
| Thermowell Position | 180° from terminals | 
| Application | Caldera Spas | 
Installation Features
- 3/4″ straight barb connection
 - 3/4″ 90-degree barb fitting
 - No pressure switch tap
 - External thermowell ports
 - Vertical mounting design
 
Important Installation Notes
- Verify 90° barb orientation (toward electrical)
 - Note external thermowell locations
 - Two thermowell ports positioned 180° from terminals
 - Specific orientation requirements
 - Confirm compatibility with system layout
 
Design Advantages
- Specialized barb orientation
 - Stainless steel durability
 - Optimized flow characteristics
 - External temperature monitoring
 - Professional-grade construction
 
System Integration
- Compatible with Caldera spa systems
 - External temperature monitoring points
 - Specific orientation design
 - Vertical installation requirements
 - Direct replacement capability
 
Performance Features
- Optimized for low-flow systems
 - Efficient heat transfer design
 - Reliable operation
 - Professional-grade components
 - Complete monitoring capability
 
Application Suitability
Specifically designed for:
- Caldera spa systems
 - Vertical mount configurations
 - Specific 90° plumbing requirements
 - Low-flow applications
 - External monitoring needs
 
Note: Verify 90° barb orientation (toward electrical) requirements before ordering
Note: Please pay attention to the direction of the 90° barb end when ordering. The two holes 180° from the terminals are external thermowells.



