Thermal Oxidizer & RTO Controls
Our flagship specialty. We program, commission, and support the PLC/HMI controls software that helps thermal oxidizer and regenerative thermal oxidizer operators manage startup, valve sequencing, burner integration, alarms, trends, and reporting needs.
TO/RTO controls work starts with the real sequence of the equipment.
Reliable oxidizer operation depends on the connection between air movement, burner safety, valve timing, temperatures, alarms, and data. The visual map keeps the retrofit scope tied to plant operation.
- RTO bed switching, bake-out, and temperature response visible in one sequence view.
- Burner management and PLC states aligned with operator-facing HMI screens.
- Alarms and trends arranged around troubleshooting, startup, and reporting needs.
What We Do for TO/RTO Systems
From initial programming through long-term support, we deliver controls integration built around the unique demands of thermal oxidizer and RTO operation — combustion controls, valve sequencing, operator visibility, permit-driven data needs, and maintainable handoff. For background on how these systems operate, see our guides on how RTOs work and TO vs. RTO selection.
PLC Programming
Valve sequencing, heatup/cooldown automation, bed switching logic, fault management, and process permissives built around documented operating states.
BMS Interface Support
Burner management interface programming to support OEM / PE-defined NFPA 86 BMS sequences, flame safeguard status, purge permissives, trip signals, and reset visibility; final site compliance remains the customer's responsibility.
HMI & SCADA
Operator interfaces with process graphics, alarm management, trend logging, diagnostic screens, and plant-floor views for RTO startup and troubleshooting.
Commissioning
On-site startup support, loop checkout, sequence verification, stack-test support, and operator handoff tied back to the PLC/HMI change scope.
Controls Troubleshooting
Valve diagnostics, BMS lockout diagnosis, alarm history review, trend analysis, and root-cause support for recurring oxidizer controls issues.
Compliance Data Support
Title V data logging, CAM parameter monitoring, deviation tracking, and reporting workflows to support the facility owner's environmental recordkeeping process.
Equipment We Support
We support common thermal oxidizer and air pollution control equipment used in manufacturing environments, including retrofit work where legacy PLC, HMI, and burner-interface hardware needs to be modernized without losing the original operating intent.
Regenerative Thermal Oxidizers
2-bed, 3-bed, and rotary valve RTO configurations — including valve sequencing, bake-out cycles, and heat-recovery control visibility.
Direct-Fired Thermal Oxidizers
Single-chamber and multi-zone direct-fired systems with combustion temperature control and operator-facing diagnostics.
Catalytic Oxidizers
Recuperative and regenerative catalytic oxidizers with preheat control, catalyst bed monitoring, and performance trending.
Afterburner Systems
Afterburner controls with temperature regulation, trip visibility, and burner management interface support.
Associated Equipment
Scrubbers, quench towers, inlet/outlet damper systems, heat exchangers, and ductwork controls that support the primary oxidizer.
Industries We Serve
Our TO/RTO controls work supports manufacturers across sectors where VOC abatement equipment, reliable startup, and environmental recordkeeping are operational priorities:
Regenerative Thermal Oxidizer Support in Ohio and the Midwest
VIR Automation is based near Indianapolis and supports RTO controls work for Indiana, Ohio, and Midwest facilities, along with selected nationwide projects. Typical requests include PLC/HMI software cleanup, controls upgrade planning, valve-sequence troubleshooting, and commissioning support for regenerative thermal oxidizers.
PLC Platforms
We program all major PLC families and integrate with leading burner management controllers. Platform selection is driven by your plant standards and application requirements.
Allen-Bradley (Rockwell)
ControlLogix, CompactLogix, MicroLogix — Studio 5000, FactoryTalk, and Logix 5000 programming.
Siemens
S7-1500, S7-1200, TIA Portal — PROFINET and PROFIBUS networking for distributed I/O.
Honeywell BMS
RM7800, RM7840, RM7890 flame safeguard controllers — wiring, configuration, and integration with PLC logic.
Legacy & Multi-Vendor
PLC-5 and SLC-500 migrations, multi-vendor integration, and bridging legacy BMS controllers to modern platforms.
Related Services
Our TO/RTO controls work connects directly to these core service areas: