Lennox 15G18 Inverter
The Lennox 15G18 is a high-performance, 3HP 230V Inverter designed specifically for variable frequency drive (VFD) applications in commercial and light residential HVAC systems. This pre-programmed VFD replacement kit (Model 615610-04) is engineered to restore precise motor speed control and peak energy efficiency to Lennox LG/LC, SG/SC, and KG/KC series units. By utilizing a Mitsubishi FR-D720 series base, the 15G18 provides a rugged solution for outdoor installations, ensuring stable operation even under high-load conditions or fluctuating ambient temperatures.
For contractors, this Lennox HVAC inverter is a true "drop-in" replacement that eliminates the need for field programming, drastically reducing commissioning time. It manages 3-phase power output to the blower motor, providing smooth ramping and sophisticated diagnostic capabilities to protect the compressor and electrical components from transient voltage spikes. When replacing this module, technicians should verify the unit’s serial and model number to ensure exact compatibility with the system’s communication protocols and voltage requirements.
- OEM Compatibility: Pre-configured for seamless integration with Lennox unit controllers, replacing old E520 and E540 VFD models.
- Efficient Speed Control: Maintains variable frequency drive performance, allowing the motor to modulate based on actual demand to reduce energy consumption.
- Rugged Build: Designed to handle 230V 3-phase output in demanding outdoor environments.
- Simplified Installation: Comes as a comprehensive kit with standard mounting keyholes for fast swap-outs in the controls compartment.
Common Questions
Can I use a generic VFD instead of the Lennox 15G18?
While generic drives may match the horsepower, the 15G18 is pre-programmed with specific Lennox firmware. Using a non-OEM drive typically leads to communication errors with the main unit controller and requires complex manual parameter tuning.
What should I check if the new inverter isn't communicating?
Verify the integrity of your shielded communication wiring. High-voltage interference (stray AC voltage on DC lines) is a common culprit. Ensure all unused wires in the bundle are grounded according to current Lennox technical specifications.
Does this unit require a separate bypass kit?
The 15G18 is a primary drive. If the system must operate during future service intervals, an optional inverter bypass kit can be installed to allow constant-volume (CAV) operation without the VFD.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Lennox 15G18 Inverter
The Lennox 15G18 is a high-performance, 3HP 230V Inverter designed specifically for variable frequency drive (VFD) applications in commercial and light residential HVAC systems. This pre-programmed VFD replacement kit (Model 615610-04) is engineered to restore precise motor speed control and peak energy efficiency to Lennox LG/LC, SG/SC, and KG/KC series units. By utilizing a Mitsubishi FR-D720 series base, the 15G18 provides a rugged solution for outdoor installations, ensuring stable operation even under high-load conditions or fluctuating ambient temperatures.
For contractors, this Lennox HVAC inverter is a true "drop-in" replacement that eliminates the need for field programming, drastically reducing commissioning time. It manages 3-phase power output to the blower motor, providing smooth ramping and sophisticated diagnostic capabilities to protect the compressor and electrical components from transient voltage spikes. When replacing this module, technicians should verify the unit’s serial and model number to ensure exact compatibility with the system’s communication protocols and voltage requirements.
- OEM Compatibility: Pre-configured for seamless integration with Lennox unit controllers, replacing old E520 and E540 VFD models.
- Efficient Speed Control: Maintains variable frequency drive performance, allowing the motor to modulate based on actual demand to reduce energy consumption.
- Rugged Build: Designed to handle 230V 3-phase output in demanding outdoor environments.
- Simplified Installation: Comes as a comprehensive kit with standard mounting keyholes for fast swap-outs in the controls compartment.
Common Questions
Can I use a generic VFD instead of the Lennox 15G18?
While generic drives may match the horsepower, the 15G18 is pre-programmed with specific Lennox firmware. Using a non-OEM drive typically leads to communication errors with the main unit controller and requires complex manual parameter tuning.
What should I check if the new inverter isn't communicating?
Verify the integrity of your shielded communication wiring. High-voltage interference (stray AC voltage on DC lines) is a common culprit. Ensure all unused wires in the bundle are grounded according to current Lennox technical specifications.
Does this unit require a separate bypass kit?
The 15G18 is a primary drive. If the system must operate during future service intervals, an optional inverter bypass kit can be installed to allow constant-volume (CAV) operation without the VFD.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Lennox 15G18 is a high-performance, 3HP 230V Inverter designed specifically for variable frequency drive (VFD) applications in commercial and light residential HVAC systems. This pre-programmed VFD replacement kit (Model 615610-04) is engineered to restore precise motor speed control and peak energy efficiency to Lennox LG/LC, SG/SC, and KG/KC series units. By utilizing a Mitsubishi FR-D720 series base, the 15G18 provides a rugged solution for outdoor installations, ensuring stable operation even under high-load conditions or fluctuating ambient temperatures.
For contractors, this Lennox HVAC inverter is a true "drop-in" replacement that eliminates the need for field programming, drastically reducing commissioning time. It manages 3-phase power output to the blower motor, providing smooth ramping and sophisticated diagnostic capabilities to protect the compressor and electrical components from transient voltage spikes. When replacing this module, technicians should verify the unit’s serial and model number to ensure exact compatibility with the system’s communication protocols and voltage requirements.
- OEM Compatibility: Pre-configured for seamless integration with Lennox unit controllers, replacing old E520 and E540 VFD models.
- Efficient Speed Control: Maintains variable frequency drive performance, allowing the motor to modulate based on actual demand to reduce energy consumption.
- Rugged Build: Designed to handle 230V 3-phase output in demanding outdoor environments.
- Simplified Installation: Comes as a comprehensive kit with standard mounting keyholes for fast swap-outs in the controls compartment.
Common Questions
Can I use a generic VFD instead of the Lennox 15G18?
While generic drives may match the horsepower, the 15G18 is pre-programmed with specific Lennox firmware. Using a non-OEM drive typically leads to communication errors with the main unit controller and requires complex manual parameter tuning.
What should I check if the new inverter isn't communicating?
Verify the integrity of your shielded communication wiring. High-voltage interference (stray AC voltage on DC lines) is a common culprit. Ensure all unused wires in the bundle are grounded according to current Lennox technical specifications.
Does this unit require a separate bypass kit?
The 15G18 is a primary drive. If the system must operate during future service intervals, an optional inverter bypass kit can be installed to allow constant-volume (CAV) operation without the VFD.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
