OXBOX BY TRANE – AIR HANDLER ELECTRIC HEAT KIT, 20 KW, R454B

The part number listed: 5JAYHTR1A20BKA for the 20 kW version.

Purpose: An electric‑resistance heat kit designed for integration with OXBOX indoor air handlers that are compatible with the refrigerant R‑454B (mildly‑flammable A2L type). It adds or supplements heating capacity inside the air‑handler cabinet.

Capacity: 20 kW of electric heating power when installed.

Compatibility: Intended for use with OXBOX air handlers in the R‑454B line, meaning the indoor unit, piping, refrigerant safety systems, blower motor etc must be made for R‑454B.

Installation Notes: The installation manual for the R‑454B air handler line highlights that field‑installed heaters are available, that rooms with flammable refrigerant (A2L) have minimum area and ventilation requirements, and that electrical wiring/clearances must meet particular codes.