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The Oxbox 5JAYHTR1J10BKA is a 10kW electric heater kit designed for use with Oxbox compatible air handler systems. It delivers supplemental or primary electric heat by integrating directly into the air handler cabinet, adding resistance heating capacity to the airstream. The kit ships with a built-in 60-amp circuit breaker, eliminating the need for a separate disconnect in many installations. Rated for 208/240-volt single-phase power at 60 Hz, this heater kit is also engineered for compatibility with R-454B refrigerant systems, making it a forward-compatible choice for newer equipment. Licensed HVAC technicians handling air handler add-on heat applications are the primary installers.
This heater kit is suited for residential air handler installations where supplemental electric heat is required. Typical applications include heat pump systems needing backup or emergency heat, or all-electric forced-air systems where a gas heat source is not available. The unit requires a minimum airflow of approximately 1000 CFM to operate safely — refer to the specific unit manual for exact airflow tables based on installed capacity. The kit is designed for multi-positional air handlers supporting upflow, downflow, and horizontal configurations.
Designed as an OEM-style electric heater kit add-on for compatible Oxbox multi-positional air handlers. Refer to the specific air handler installation manual and Oxbox heater kit selection guide to confirm fit before installation. R-454B system compatibility is supported as noted in available product documentation.
Installation must be performed by a licensed HVAC technician in accordance with the National Electrical Code (NEC) and all applicable local codes. Disconnect and lock out all power to the air handler before inserting or servicing the heater kit. Verify that the branch circuit ampacity and overcurrent protection at the panel meet the unit's minimum circuit ampacity requirements before energizing. Do not operate the heater kit below the minimum required airflow, as insufficient airflow can cause element overtemperature and premature failure.
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