Laars Heating Systems E2103900 Control 321894-706 This kit is designed for

This kit is designed for specific Trane and American Standard models

Rejection-style design ensures compliance and prevents the installation of fuses with lower interrupting ratings

For contractors servicing Reznor gas-fired unit heaters

Features 8

this board optimizes energy consumption while protecting critical system components

Laars Heating Systems E2103900 Control 321894-706 This kit is designed forThe Laars Heating Systems E2103900 Control is a specialized manual reset aquastat designed for high limit temperature protection in commercial and residential hydronic systems. Featuring a 40 180F temperature range, this SPST (Single Pole Single Throw) high limit switch ensures system safety by breaking the electrical circuit when water temperatures exceed the user defined setpoint. Engineers and technicians rely on this OEM Laars replacement part for