Lochinvar L100208230 Transformer 24V 40VA Noble

Product Description

The LOCHINVAR L100208230 is a 24-volt, 40VA control transformer designed for use in the Noble series boiler line. It steps down line voltage to the low-voltage control circuit, powering the thermostat, control board, and safety interlock functions that govern burner operation. This transformer is an OEM replacement part installed by licensed heating technicians during routine service or control-system troubleshooting. Key electrical ratings are 24 volts secondary output and 40 volt-amperes of capacity, which are the defining specs for proper replacement selection.

This transformer is intended for Noble series hydronic boilers in residential and light commercial heating applications. It fits within the control enclosure of the boiler and supplies the low-voltage power required by the integrated control system. Technicians typically encounter this part during diagnostic calls involving control board faults, no-ignition conditions, or low-voltage circuit failures traced back to a failed transformer.

Key Features

• 24-volt secondary output matches standard low-voltage control circuit requirements
• 40VA capacity supports the control board, thermostat, and interlock loads typical in Noble series boilers
• OEM replacement part — direct fitment with no field modification required
• Designed for integration within the boiler control enclosure

Compatibility

Designed as an OEM replacement transformer for LOCHINVAR Noble series boilers requiring a 24-volt, 40VA control transformer.

Installation Notes

Installation should be performed by a licensed heating technician familiar with hydronic boiler control systems. Shut off all power to the boiler at the disconnect or breaker before removing the existing transformer or accessing the control enclosure. Verify that secondary voltage and VA rating of the replacement match the original unit before energizing. Work should comply with applicable local electrical codes and the boiler manufacturer's service documentation.

Technical Specifications

• Secondary Voltage: 24 volts
• VA Rating: 40VA

Standard Information

• Brand: LOCHINVAR
• Manufacturer Part Number: L100208230