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Durable Construction: Features a rolled steel frame and aluminum flange for superior corrosion resistance in outdoor climates
Optimized Condensate Management: Restores the liquid-level sensing capability of 505SS and 506 models to ensure zero compressed air loss during discharge
The inclusion of a potential relay—rather than a basic PTCR device—ensures that the start capacitor is cleanly dropped from the circuit once the motor reaches approximately 75% of its operating speed
utilizing OEM inducer wheels like the WHL0509 ensures your Trane or American Standard unit operates within its original efficiency parameters without the risk of clearance issues common with universal aftermarket alternatives
a GC Valves repair kit is required to restore the mechanical seal
Laars Heating Systems 2400-446 Return Sensor 326058-757 Durable Construction: Features a rolledThe Laars Heating Systems 2400 446 Return Sensor is a precision thermistor designed for critical temperature monitoring within the hydronic return loop. Engineered specifically for compatibility with Laars Endurance and Pennant series boilers, this NTC thermistor provides real time feedback to the integrated control board to maintain tight setpoint differentials. Proper installation of this OEM replacement sensor is essential for accurate delta T
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