Aspen a2l4sb A2L Refrigerant Detection Rds Kit R454B

Product DescriptionThe ASPEN a2l4sb is an A2L refrigerant detection system (RDS) kit engineered specifically for R454B refrigerant installations. The kit provides a complete solution for code-compliant detection and mitigation of A2L refrigerant leaks in residential and light-commercial HVAC systems. It includes a refrigerant sensor and a mitigation device, fulfilling the full installation requirement under UL 60335-2-40. When activated, the system connects through the 24-volt connection on the furnace, shuts down the condenser, and energizes the furnace blower to dilute refrigerant concentration below the flammability limit. Licensed HVAC technicians performing new installations or retrofits of R454B systems are the primary installers.The a2l4sb is formulated for R454B applications and is compatible with all Aspen coils. It is suited for residential split systems and light-commercial equipment utilizing R454B as the working refrigerant. The kit design accommodates flexible installation configurations, making it appropriate for a range of field conditions. Kits with relay functionality also support optional control of additional equipment or accessories connected to the system.Key FeaturesCertified to UL 60335-2-40 for A2L refrigerant detection and mitigation complianceOptimized specifically for R454B to minimize nuisance and false alarmsConnects through the 24-volt furnace connection using provided field wiringActivates condenser shutdown and furnace blower engagement upon refrigerant detectionCompatible with all Aspen coilsOptional relay functionality for control of additional accessories or equipmentCompatibilityCompatible with all Aspen coils. Designed for HVAC systems using R454B refrigerant that require A2L detection and mitigation per UL 60335-2-40. Suitable for use with 13-inch wide drain pans.Installation NotesInstallation should be performed by a licensed HVAC technician familiar with A2L refrigerant safety requirements and local mechanical codes. Disconnect power to the system before wiring the sensor and mitigation device. Follow the provided field wiring instructions to connect the kit through the 24-volt furnace terminal. Verify all connections and sensor placement comply with UL 60335-2-40 and applicable local codes before returning the system to service.Technical SpecificationsRefrigerant Type: R454BControl Voltage: 24 voltsCertification: UL 60335-2-40Suitable For Use With: 13 inch Wide Drain PansStandard InformationBrand: ASPENManufacturer Part Number: a2l4sb