This Ranco A22 series component is essential for maintaining strict thermal parameters in walk-in coolers or specialized food service equipment

ensuring the system returns to factory-spec performance without the need for field modifications

This factory-original OEM Reznor replacement part features a critical set point of

reducing service time and preventing installation errors

This genuine OEM component is the primary ignition control module designed to manage critical firing sequences

Laars Heating Systems E0088400 Relay R-448A This Ranco A22 series componentThe 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