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it is an OEM-level replacement for Lennox part numbers 78B72
Does this part include the internal glass tube
Maintains factory-specified gas-to-air mixing ratios for clean combustion
A failed starting relay often shows an open circuit or visible signs of carbon buildup on the internal contacts
Functional Devices-RIB TR20VA001 Transformer it is an OEM-level replacementThe Functional Devices RIB TR20VA001 is a commercial grade 120V to 24V step down transformer engineered for reliable power distribution in HVACR control circuits. Providing a 20VA power rating, this unit is designed for continuous duty applications where stability is critical for low voltage controllers and relays. The TR20VA001 features inherently limited overcurrent protection, eliminating the need for external fusing and reducing potential failure
