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How Hvac Controls Influences Your Units Efficiency

HVAC controls can cut down energy waste with the right usage. Always inspect your HVAC control once in a while to ensure its optimum performance.

Modern HVAC controls are effective in boosting your HVAC systems energy efficiency. But if you dont install or use it right, you waste energy without you knowing.

Problems with building controls are often secondary to human error, according to the owner of Delaware Heating and Plumbing. It is a Delaware business specializing in automation systems creation. The two contributing factors why mistakes happen are scheduling issues and setpoints. For instance, an FM overrides the set temperature range as a result of a persons complaint regarding the very warm temperature inside the house. But that person forgets to put it back to its original setpoint much later and ends up wasting so much cooling energy.

Does your HVAC control perform its job? Heed these suggestions to make sure they operate as designed.

1. Search for Overrides

If everything seems to be working well in your HVAC control an essential step in controlling the software can aid in confirming your next course of action is to evaluate the temperature settings and operational schedules. Do this to determine if there were recent adjustments. Almost all control packages follow the softwares user activity, says Callahan. If everybody on the team have their individual customized user ID and password, you can easily track down the overrides source. Callahan further explains that youll find out if a certain person changed the setpoint. Also, some items can force the operator to write comments why changes were made to be able to carry out the override. The comment must justify and reflect the reason for such changes, such as the occupant requested for these changes, or we changed the setting for testing purposes. An audit trail must follow such instances to state why there are changes. If somebody just wrote nonsense things in the comment section, you can demand an explanation from that person.

It is also possible to designate certain privileges and capacities for various users. For instance, letting the entire team view control settings along with consumption data, but just allow a few people to make changes to the settings.

2. Program for Problems

If the nature of the problem is not due to the HVAC control or the people handling it, search elsewhere in its process for the cause.

Callahan explains that you can program building management systems during its commissioning, such as running an A/C unit at the maximum of 100% cooling for a certain length of time, perhaps 15 minutes long. Expect its discharge temperature to only be 53% degrees.

Callahan adds that whenever you run your A/C for around 15 minutes, you can expect its discharge temperature to be at 53 degrees all the time. If you see it is at 60, youll know that something is wrong, and you must prompt the building operator to inspect the unit. Come up with programs that have an expected behavior. If something happens out of the ordinary, the system alerts the operator of certain problems with the unit.

3. Check End Equipment

Over the years, normal wear and tear on various moving parts can significantly affect the efficiency of a unit, and prevent its controls from working properly, he adds.

Callahan says that a damper and actuators linkage can loosen as time passes by as a result of vibration and not being tight enough. In the long run, the actuator and the dampers linkage loosens a lot leaving the actuator movable while the damper not. It will make your system work harder than necessary, making everybody inside feel uncomfortable and waste a lot of energy.


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