Simplified Installation: Standardized dimensions allow for quick swap-outs during emergency service calls

This harness is specifically engineered for Trane and American Standard OEM specifications

Built with a robust frame and designed for continuous duty in harsh mechanical environments

The HVAC auxiliary switch provides a secondary set of contacts that change state with the main poles

this is a 1-pole unit with a shunt

Laars Heating Systems RXD7198 Control Board 320734-701 Simplified Installation: Standardized dimensions allowThe Laars Heating Systems RXD7198 Control Board is a critical OEM replacement part engineered for precise thermal management and system logic within high efficiency hydronic systems. Specifically designed for the Laars NeoTherm NTH150 210 series, this HVAC control board integrates advanced microprocessor logic to regulate combustion air flow, ignition sequences, and variable firing rates. For contractors performing boiler control board replacement,