Microprocessor Retrofits
Specification: BACnet / Modbus Open Protocol
Replacing legacy pneumatic controls with high-speed direct digital automation and remote facility telemetry.
Engineering Scope & Overview
Pneumatic thermostats and mechanical relays drift out of calibration, creating simultaneous heating and cooling battles that skyrocket utility bills. Microprocessor retrofits bring legacy central plants into the modern era with precision digital staging, remote alarms, and automated setpoint resets.
WMI Field Protocol & Certified Best Practices
- Direct digital controller (DDC) replacement of obsolete pneumatic linkages
- High-accuracy thermistors and pressure transducers installation
- Remote cloud telemetry with SMS and email equipment fault alarms
- Optimal start/stop scheduling based on ambient weather forecasts
Frequently Asked Questions
- What is the biggest problem with aging pneumatic HVAC controls?
- Pneumatic air lines develop pinhole leaks, compressor dryers fail, and copper restrictors clog. This causes dampers and valves to stick open, forcing chillers and boilers to fight each other simultaneously.
- Can our central plant be modernized without replacing the heavy machinery itself?
- Absolutely. A microprocessor retrofit keeps your existing chillers, boilers, and pumps intact while replacing only the sensors, actuators, and controllers, modernizing your facility at 10% to 20% the cost of replacement.
- Do you offer remote equipment monitoring and alarm notifications?
- Yes. Our digital control packages include secure cloud gateways that immediately send SMS and email alerts to facility directors and Western Mechanical technicians when operating limits are exceeded.
Emergency Dispatch & RFP Inquiry
Contact Western Mechanical Inc. toll-free at (800) 585-5085 for commercial and industrial service across Southern California.