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Is this a spring-return or non-spring return model
Key Benefits Precise Thermal Protection: Maintains a strict 90-105°F operating range to protect system components from heat damage
High-Temperature Durability: Constructed to sustain the thermal stresses common in large-scale hydronic heating and cooling loops
A fixed 2 degree F differential ensures the system does not "short cycle
Trane TRR1581 Transformer 323080-701 Is this a spring-return orThe Trane TRR1581 Transformer is a heavy duty 75VA HVAC replacement part engineered for demanding residential and commercial applications. Designed to step down 200 230V primary voltage to a stable 24V secondary output, this component ensures consistent low voltage power for critical systems including furnace control boards, 24V thermostats, and contactor coils. As a genuine Trane OEM transformer, it eliminates the guesswork of universal fitments,
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