Aprilaire 4240 Male Disconnect Assembly R-22 Versatile Application: Engineered for both

Versatile Application: Engineered for both single-stage (1-stage) and 2-stage gas valves

preventing the outdoor air recirculation that frequently degrades system efficiency and leads to premature compressor wear

Key Benefits for Technicians Precise Modulation: Advanced circuitry supports two-stage thermostat operations for enhanced temperature stability and energy conservation

Smith technical manual

you can set the dial to 240°F to match the original equipment manufacturer's safety setpoint

Aprilaire 4240 Male Disconnect Assembly R-22 Versatile Application: Engineered for bothThe Aprilaire 4240 Male Disconnect Assembly is a factory original OEM replacement part engineered specifically for the Aprilaire 700 series whole house humidifiers. This male disconnect assembly serves as the critical electrical interface, plugging directly into the humidifier base to establish wiring continuity with the female disconnect. By facilitating a secure connection between the two halves of the humidifier unit, it ensures the HVAC humidifier