Resideo ZD20X24TZ Damper Freon the Lennox 33J37 Hot Surface

the Lennox 33J37 Hot Surface Ignitor is a critical OEM replacement component

and large-scale residential furnaces

providing a small orifice that effectively minimizes pressure pulsation to protect sensitive controls

Do I need to change the gas valve when using the 510-811-630 kit

Field Serviceable Design: Allows for rapid solenoid valve maintenance without recovering the entire refrigerant charge or brazing new components

Resideo ZD20X24TZ Damper Freon the Lennox 33J37 Hot SurfaceThe Resideo ZD20X24TZ is a heavy duty parallel blade zone damper designed for precision airflow control in multi zone HVAC systems. Building on the reliable design of the legacy ZDB 20X24, this 20 inch wide by 24 inch high damper features a synchronous motor mounted on the 24 inch side. Operating on a standard 24Vac signal, the actuator utilizes a power closed spring return open configuration, ensuring the zone defaults to an open state during power