TCA Controls provides integrated controls solutions for commercial and industrial HVAC systems. TCA Controls designs, programs and installs DDC control systems utilizing a custom graphic user interface, touchscreen access, remote monitoring and control using Tridium, Distech, Honeywell and Johnson Controls.

Building Automation

Automated control solutions for HVAC, lighting and other building systems

System Integration

Open protocol, single platform graphic user interface with remote access capability

Energy & IAQ Management

Interactive front end with 3d floor plans that provides a “single pane of glass” allowing you to monitor your equipment’s function and give you access to adjust your building schedules and setpoints; view temperature, humidity and air quality in spaces; and check statuses of boilers, pumps, chillers, and more

Call 978-225-2045 or email sales@tca-controls.com to schedule a free consultation.

Check out some of our recent controls jobs.

Cannabis Cultivation
Bountiful Cannabis Farm
Green Fellas
HappyValley Cannabis
In Good Health
Mission Massachusetts
Natural Selections
Prime Alternative
Therapies Sanctuary
ATC

Biotech/Pharma
Agilent Technologies
Battelle Labs
Gentex
Johnson Matthey Pharma
Jordie Labs
Lung Biolab

Defense
Raytheon
Lockheed Martin

Colleges & Universities
Assumption College
Boston University
Endicott College
Fitchburg State University
Harvard University
Johnson Wales University

Public Schools
Nelson Place Elementary, Worcester
No. Kingstown High School, RI
Pine Grove Elementary, Rowley
Sarah Gibbons Elementary, Westboro
Warwick High School, RI

Healthcare
Cardinal Health
Exeter Hospital
Hallmark Health

Hospitality
Archer Hotel Hotel
Concord, NH

Manufacturing
Bake-n-Joy
Interpolymer

Services/Retail
Federal Reserve
Bank Liberty Mutual

HVAC Controls 101

HVAC controls consist of devices that govern the operations of a building’s heating, ventilation, and air conditioning equipment. At their core, controls are the devices in an HVAC system that govern the equipment and allow data to communicate between devices, hardware, and computer systems.

With no HVAC control scheme in place, you typically have thermostats that read temperature, and heat or cool a space based on that reading. It’s either on or off. This means wasted energy, limited control, and reacting to problems instead of proactively maintaining equipment. Implementing an HVAC controls scheme using Direct Digital Control, also known as DDC, changes all of that.

DDC is the automated control of one or more devices using an output signal generated from computer calculations. These are based on input signals and desired environmental criteria. DDC has been used in building automation systems, also known as BAS, since the 1970s. A DDC system is simply a collection of electronic controls and devices sharing information to monitor and manage indoor environments.

DDC is used in all new installations and can be installed in existing buildings where mechanical systems are in place. These systems can be retrofitted and upgraded to support these controls.

A typical DDC system includes a controller and sensors. The controller processes input signals and calculates output signals necessary to control the internal environment via building equipment. Sensors supply the controller with those inputs. The information, or inputs includes thinks like air temperature, humidity, CO2, air flow and pressure signals. This sensor data represents the current conditions of the space.

The controller’s internal computer is programmed to make decisions based on sensor input and desired setpoints, calculating the needed outputs. If a space is too hot, for example, the output on the controller will open a damper-actuator to let more cool air into a space. There are other criteria used to control the internal environment of a space, such as whether or not the space is occupied. For example, if the room is not occupied and the temperature is below the unoccupied heating setpoint, the room begins to warm. If the CO2 level is too high, outside air is brought in. The sequence determines the general operation of the DDC. TCA Controls writes its programs for the controllers to the specific needs of the owner and the business environment.

TCA Controls uses an open protocol, single platform graphic user interface with remote access capability. This interactive front end with 3d floor plans provides a “single pane of glass” allowing you to monitor your equipment’s function and give you access to adjust your building schedules and setpoints; view temperature, humidity and air quality in spaces; and check statuses of boilers, pumps, chillers, and more. You will be able to view, control and manage your system using a phone or tablet. This results in a significant savings of time, resources, energy and operational costs.