by High Performance HVAC | Refrigeration |
What you will learn from Refrigeration Pressure Switches
- A question from one of our readers - What are refrigeration pressure switches and how pressure switches protect the refrigeration circuit.
- All about high-pressure refrigeration switches
- All about low-pressure refrigeration switches
- Benefits of refrigeration pressure switches
- Refrigeration Pressure Switch Settings
- Refrigeration Pressure Switch Wiring Diagram
- Lots of related links to help you learn more
Richard - What are pressure switches used in refrigeration circuits and how do pressure switches protect the system from further damage? (more…)
by High Performance HVAC | Air Handlers |
Trane Air Handler AHU with Electric Duct Heater
Trane Air Handler AHU Electric Duct Heater - This Trane air handling unit photo shows a Trane AHU with an electric duct heater above the Trane air handler in the supply duct. In places where natural gas is not available and propane LP gas is impractical or not wanted. Electric heat makes a good source of heating. This electric duct heater is situated on the supply side of the air handler. Furthermore, many duct heaters are installed inside the air handler. (more…)
by High Performance HVAC | Direct Digital Controls |
DDC Control Module for an Air Handling Unit – This is a direct digital controls control module for an air handler that serves some VAV boxes in office spaces for a Data Center. This DDC control module includes analog and digital inputs and analog and digital outputs to handle all the control functions necessary to control the devices and components on a large commercial air handler. (more…)
by High Performance HVAC | Air Handlers |
Air Handler Filter Pressure Sensor - This is a pressure sensor. It tells a maintenance technician if the air filters are dirty and clogged. The pressure control is a low static pressure switch to trip the unit if the mixing box drops below the setpoint pressure. The pressure the switch is calibrated to.
In addition, the low static pressure sensor protects the fan and the ductwork including dampers from damage. If the economizer damper and the return air damper would fail closed (or another possible scenario) that would cause the unit to pull negative pressure in the mixing box. (more…)
by High Performance HVAC | Gas Furnaces |
White Rodgers Gas Furnace Ignition Control Board
Electronic Ignition Gas Furnace Problems Troubleshooting - Gas furnaces are a prevalent form of heat for homes and businesses, and occasionally a gas furnace needs to be repaired because of a problem with the gas furnace.
Since there are many different types of gas furnaces, it is difficult to cover every single possible gas furnace problem that can occur with a gas furnace in one article. We are going to break this theme “gas furnace problems” down into a series of articles with the first one being gas furnace problems with electronic ignition gas furnaces.
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