Laars Heating Systems E2103900 Control 321894-706 As a direct Service First

As a direct Service First replacement part

Built to close on fall

this board optimizes energy consumption while protecting critical system components

Is this valve direct-acting or pilot-operated

For contractors servicing Reznor gas-fired unit heaters

Laars Heating Systems E2103900 Control 321894-706 As a direct Service FirstThe 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