Laars Heating Systems E0088400 Relay 340155-7026 these internal components are compatible

these internal components are compatible with both the standard bronze and lead-free (LF) 4A series backflow preventers

handling fluid temperatures from -40°F to 250°F

ensuring precise combustion and optimal manifold pressure

it maintains system balance and mitigates the vibration issues often found with generic "multi-fit" blades

This part is specifically sized for natural gas Modine units

Laars Heating Systems E0088400 Relay 340155-7026 these internal components are compatibleThe Laars Heating Systems E0088400 Relay is a specialized 24V DPNO Lockout Relay engineered for critical safety sequencing in high efficiency boilers and water heaters. As a Double Pole Normally Open component, it provides essential circuit isolation and prevents unsafe operation by locking out the ignition sequence when a fault is detected in the control loop. Designed for compatibility with various Laars boiler parts, this relay is commonly found in