LOA24 Series Common Programmable Controller (Electronic Type) — Burner Sequencer PLC Control Box for Oil Burner ( LOA24.171B27) Key benefits Reliable sequencing and control: Provides automated, programmable control of oil burner start, staging, and controlled shutdown to reduce manual intervention and improve system uptime. Improves safety and consistency: Electronic PLCbased sequencing enforces orderly burner operations and reduces the risk of improper start/stop cycles. Simplifies maintenance and replacement: Designed as a direct, modern replacement for common LOA24style controllers, making retrofits and service straightforward. Compact and dependable: Electronic design reduces moving parts and wear, delivering steady performance in commercial and industrial heating applications. Key attributes Model and series: LOA24 Series — LOA24.171B27. Type: Common programmable controller, electronic type, burner sequencer (PLC) control box for oil burners. Functionality: Programmable sequencing for burner operation (start, staging, shutdown) and PLCstyle control behavior to coordinate burner components and interlocks. Compatibility: Intended for use with a wide range of oil burners and commercial heating systems that accept LOA24series control units. Installation: Control box format suitable for installation as a replacement unit or as part of a control cabinet where behindinspection access is required. Performance: Electronic PLC control offers consistent timing and repeatable sequences to support reliable burner operation under varied conditions. Construction: Enclosed control box form factor engineered for field use in heating equipment installations. Use cases and applications Commercial boiler room retrofit: aging mechanical or obsolete controllers with the LOA24.171B27 to modernize sequencing and improve reliability across multiple boilers. Industrial process heating: Use the LOA24.171B27 to manage oilfired burners in process ovens or heaters where precise sequencing and dependable shutdown behavior are needed. Service and maintenance kits: Keep the LOA24.171B27 on hand as a spare to minimize downtime during burner controller failures or scheduled overhauls. Installation and maintenance notes Intended to be installed by qualified HVAC or controls technicians familiar with burner wiring and safety practices. Integrates into standard burner control wiring schemes; verify compatibility and wiring diagrams against the target burner before installation. Electronic construction reduces mechanical wear, but periodic inspection and professional maintenance are advised to ensure performance. What makes the LOA24.171B27 a practical choice Modern electronic PLC sequencing in the familiar LOA24 control form factor gives technicians and system owners a straightforward upgrade path. Focused on dependable control for oilfired burners, the LOA24.171B27 balances simplicity of replacement with the advantages of programmable sequencing for more consistent, safer burner operation.