The plenum-rated enclosure and 1/2" NPT nipple allow for direct mounting to electrical junctions

Its terminal strip output accepts 14-22 AWG wire

This specific model is designed for clockwise (CW) rotation when viewing from the discharge side (lead edge leading)

or condensate drain lines that could otherwise lead to dangerous back-drafting

this dual switch is found in various 80% through 95% AFUE 2-stage models depending on the specific venting configuration

Sterling HVAC 11J28R06881 Control/Ignition Board Freon The plenum-rated enclosure and 1/2"The Sterling HVAC 11J28R06881 Control Ignition Board is the current OEM replacement engineered for Direct Spark Ignition (DSI) operation in Sterling and Beacon Morris gas fired unit heaters. Functionally identical to the legacy J28R06881, this updated controller is optimized specifically for heating only applications, having eliminated the unnecessary cooling relay found on older universal boards to streamline HVAC system reliability. Designed as a