Laars Heating Systems E0088400 Relay 320819-301 This part is specifically sized

This part is specifically sized for KN-4 dimensions

Enhanced Flow Performance: High-capacity piston design handles 40 SCFM

this board features a wide operating temperature range of -4°F to 158°F and is engineered to handle 24V DC power distribution reliably

Multi-speed flexibility allows for proper air distribution during both heating and cooling cycles

an unresponsive thermostat

Laars Heating Systems E0088400 Relay 320819-301 This part is specifically sizedThe 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