Pressure

Refrigeration Pressure Switches | HVAC Systems

Refrigeration Pressure Switches | HVAC Systems What you will learn from this article: 1) the question from one our readers – What are refrigeration pressure switches and how pressure switches protect the refrigeration circuit. 2) All about high pressure refrigeration switches 3) All about low pressure refrigeration switches 4) benefits of refrigeration pressure switches 5) […]

Water Tower Pumps and Controls | Pumping Systems

Water Tower Pumps and Controls | Pumping Systems Water Tower Pumps and Controls | Pumping Systems – Water towers maintain a ready limited supply of water for communities in the event the water main goes down. Many towers are used for emergency situations for the fire department to have water for fighting fires and for […]

Hot Water Boiler Components and Controls | Combustion Control

Hot Water Boiler Components and Controls | Combustion Control This photo shows the boiler cabinet open exposing controls and basic components of the boiler. The module on the left is the ignition control module which controls the sequence of operation for ignition and burner controls of the boiler. When the boiler is enabled to run […]

DDC Outside Air Economizer System | HVAC Control

DDC Outside Air Economizer System DDC Outside Air Economizer System  – Outside louvers allow the DDC control system to open dampers and introduce fresh air into the building. Building automation system, or the energy management system as it is sometimes called, monitors outside air temperature and humidity and based on a calculation and opens the outside […]

HVAC Definitions Terms & Acronyms | Heating Cooling

HVAC Definitions Terms & Acronyms This is a comprehensive list of HVAC Acronyms and HVAC Terms. High Performance HVAC is certain there are more terms and acronyms. If you know of something we missed please email us. Thanks! AC – Air Conditioning or Alternating Current ACCA – Air Conditioning Contractors Associations AFUE – Annual Fuel […]

Hydronic Pump Cavitation | HVAC Water Problems

Hydronic Pump Cavitation | HVAC Water Problems Pump cavitation can cause severe problems to a pump if not addressed and corrected. To understand the cause of cavitation you need to understand the pressure temperature relationship of the liquid in the loop (typically water or water/glycol mix). As the water passes through the pump it changes […]

Boiler Pressure Relief Valve | Boiler Safety

Boiler Pressure Relief Valve The boiler pressure relief valve is a safety valve designed to relieved an excessive build up of pressure inside the boiler. The is a pressure vessel designed to handle a safe amount of pressure. If the pressure were to build up beyond the safety limitations as set forth by the design […]

R-134A Refrigerant Pressure Temperature Chart

R-134A Refrigerant Pressure Temperature Chart R-134A Refrigerant Pressure Temperature Chart – R-134A is an inert gas also known as Tetrafluoroethane and is used in air conditioner systems. R134A is used as a chemical refrigerant in automotive and domestic use air conditioners such as chilled water systems in both commercial markets and industrial markets. You are very familiar […]

Air Handler Filter Pressure Sensor and Low Static Pressure

On the left is a pressure sensor to tell a maintenance technician if the HVAC Furnace Filters and the right control is a low static pressure switch to trip the unit if the mixing box drops below the set point pressure the switch is calibrated to. The low static pressure sensor protects the fan and […]

HVAC Heating and Cooling © 2016