and B2HN series equipment

If the sensor fails to detect a signal—often due to carbon buildup or a cracked ceramic insulator—it triggers a system lockout to prevent hazardous unburned gas accumulation

Always cross-reference the 7773015 replacement data before installation

Its green label and open-face design allow for rapid diagnosis and response in high-cycle environments

Durable Construction: Features a high-quality diaphragm and robust electrical contacts to withstand high-temperature HVAC environments

Zonefirst ZDS-22X14 22WX14H Parallel 24V 2-Pos S/R R-410A and B2HN series equipmentThe Zonefirst ZDS 22X14 is a professional grade side mount rectangular zone damper engineered for high static residential and commercial air handling systems. Featuring a 22 inch width by 14 inch height configuration, this parallel blade damper is constructed from heavy duty extruded aluminum with mitered corners for maximum structural rigidity. The unit operates on a 24V two wire system, utilizing a power close spring return (S R) actuator that