Adding Hardware Points to FEC Controllers using the Controller Configuration Tool

Metasys

As systems change over time, it may become necessary to add additional hardware points. Adding hardware points to a control system will require changing the control programming in the device. One project we recently completed was the replacement of older pneumatic Continue reading Adding Hardware Points to FEC Controllers using the Controller Configuration Tool

Programming a Chilled Water System using Johnson Controls Controller Configuration Tool

Chiller

The primary source of cooling in many large commercial applications is the chilled water system.  These systems provide cold water to air handlers and other HVAC equipment within a building. Chilled water systems can be very simple or very complex Continue reading Programming a Chilled Water System using Johnson Controls Controller Configuration Tool

Basics of Air Handlers

Air Handler Controls

The air handler provides conditioned air to areas of a building for the purposes of heating, cooling and ventilation.  (HVAC)  Air handlers may also be configured to control humidity, directly control zone temperature, or condition supply air to a specific Continue reading Basics of Air Handlers

Variable Air Volume Controller Troubleshooting

Johnson Controls VMA

The VMA controller is designed to control the amount of air flow into a particular zone. The VMA controller is the device that controls the VAV (Variable Air Volume) box and associated components.  There is generally an electronic zone thermostat Continue reading Variable Air Volume Controller Troubleshooting

PID Loop Tuning Using HVAC Pro

VFD

The PID loop in any control program may need tuning to make the system perform as it should.  If the PID loop becomes very erratic and unable to control the system the way it should it might be time to Continue reading PID Loop Tuning Using HVAC Pro

Adding Unknown Johnson Controls N2 Control Points

Metasys

Adding control points into Johnson Controls Metasys can be a challenge.  This is especially true when working with legacy controllers which us the N2 communication protocol. There are two ways to add points from these controllers into your system.  One Continue reading Adding Unknown Johnson Controls N2 Control Points

Individual Zone Scheduling Reduces Cost by Lowering Utility Demand

Jace Connection

Building Automation Systems such as those provided by Johnson Controls, Tritium and many others,  have a wide range of flexibility in scheduling equipment such as air handlers, lighting or a whole lot of other things. The ability to schedule equipment Continue reading Individual Zone Scheduling Reduces Cost by Lowering Utility Demand

Modifying a Johnson Controls DX 9100 Control Program

Control Programming

As time passes and system needs change it becomes possible that changing the control programming is the next step in keeping a system running correctly. Typically program changes are rare in a system but as technology changes and older devices Continue reading Modifying a Johnson Controls DX 9100 Control Program

Electro Pneumatic Transducers

Electro Pneumatic Transducer

Many older Building Automation Systems used pneumatic control of valves, dampers and actuators.  Even though more systems are coming under the control of electronics, we must be able to integrate electronic systems with pneumatic actuators. An electro pneumatic transducer will Continue reading Electro Pneumatic Transducers

Adding Field Control Points to Existing Control Programs

Air Handler Controls

It is common for changes to be made within control systems that require adding additional control points to an existing controller and control program.  Most programming applications give the flexibility to add these control points without affecting the main portion Continue reading Adding Field Control Points to Existing Control Programs