Selecting A Pressure Switch? While many HVAC appliances and devices do have a pressure switch included within their build, many include this essential component as an optional part. Due to rising production costs and the subsequent production-related consistency resulting from that (most pressure switches aren't included in complete units) and protective operational controls are mostly optional nowadays.
Despite that, it can be purchased independently from a unit. The manufacturers of many HVACrelated units sell pressure switches and other essential components for people to install in their units or, have a professional install those components for them.
Selecting the right one
Due to the market out there for switches, there are various types of pressure switches on the market. The way a pressure works usually influences where it best works as a component within the device that it's designed for use.
To provide an example, a Co2 switch is designed for use in a HVAC system that relies on Co2 (carbon dioxide) as an essential operational component. The switch in that particular system operates as other switches does and, that usually involves opening or closing its contact when it reaches a certain pressure threshold.
Not everyone will need a Co2 switch, since everyone doesn't use a HVAC system unless they know that they do. That's why it's important to recognize what pressure switch you might need, so you can eventually have it installed within your appliance's system. If you are shopping for a switch, you don't have to install the switch yourself if you don't feel comfortable. There are many HVAC professionals who are willing to sell and install it for most home and commercial HVAC systems, saving you the trouble.
Another thing to consider about getting a pressure switch is its life span. The life span of a it is directly tied to how often it gets used within its corresponding appliance. Certain types of them, like a diaphragm switch, have longer life spans. Other switches, like a bellows switch and a piston type switch, have shorter life spans.
You can usually determine the life of a them based on factors that determine how it operates factors like cycle speed, its maximum and minimum pressure thresholds, its set point, pressure change rate, hydraulic shock and dead-band settings.
To go into further detail, the pressure ranges of it usually determine the minimum and maximum set points of the component. That essentially indicates the type of pressure thresholds that the switch might hold, showing what the switch itself is capable of handling.
The housing of any switch like a Co2 pressure switch is also important, especially when taking its life span into account. A properly housed switch will be protected from potential hazards that may impede the operation of the switch itself.
Pay attention to how the market rates a switch with specific housing; in most cases, many of them get housing ratings that correlate with what that particular housing can do. A Co2 pressure switch, as an example, may have resilient housing to protect itself against its Co2 operating HVAC system.
For more interesting information, you can visit the following online resources: HVAC Pressure Switch.
Published on Apr 29, 2014
While many HVAC appliances and devices do have a pressure switch included within their build, many include this essential component as an op...