There are 4 air handling units in the Scaife Hall, 3 in the basement mechanical room and 1 in penthouse upon the top floor. For 3 air handling units in the basement, 2 control air conditioning system in the basement and the first floor, the other controls air conditioning system of lecture hall. The air handling unit in penthouse controls the second to fourth floor. Air Handling Unit Working Mechanism (cooling mode) Fan Coil Unit Working Mechanism (cooling mode) For each air handling unit in the basement, it consists of 8 modules. Pictures of 3 air handling units in the basement: Air handling unit 1 (controlling for basement and the first floor) AHU in the basement mechanical room Basement Air Handling Unit The M-Series Climate Changer air handler is a superior cataloged air handler with extensive flexibility to meet the specific needs of engineered application. With its modular, “building-block” construction, the M-Series air handler can also meet the needs of what have traditionally been custom air handler applications.

The M-Series air handler, with all of its options, is used in a wide variety of applications in the industrial and commercial marketplaces.furnace blower motor will not startD3R219A B/M A (SFDL/RIGHT)air conditioner heater combo wall units Ceiling Air Handling Unit (controling for the basement and the first floor)hvac unit 30 test Champion Climate Control Reciprocating Air Compressors – ½ - 25 HP 2.2 – 102.5 acfm at 80 psig Up to 175 psig maximum pressure on selected models Tank or Base Mounted, Simplex & Duplex Models Single & Two Stage Air Cooled, Splash Lubricated OSHA Approved Heavy Duty Enclosed Belt Guard Factory filled with ChampLub lubricant © Copyright © 2014. Every American Standard air handler is built to circulate newly

cooled or heating air into every corner in your house, even the tightPair an air handler with an air conditioner or heat pump to circulate cool air in teh summer and warm air in the winter. Using innovative variable-speed technology, this American Standard air handler provides your home with reliable and efficient comfort year round.  Together with AccuLink™ communicating technology, this HVAC air handler helps deliver cleaner air and less moisture. Comfortable, even cooling and heating from room to room Remote monitoring and programming Variable-speed technology provides quiet startups and shutdowns with greater humidity control and energy savings. Humidity control and balance Built to meet the needs of a variety of systems, the ForeFront™ Gold TAM4 Air Handler unit's design helps ensure exceptional air flow and comfort.  Plus, this residential air handler can help manage your household budget with its efficient performance. Reliable comfort and performance

A powerful blower motor makes this HVAC air handler unit an efficient and reliable option for air control.  Plus, this energy-efficient air handler offers a unique design that prevents irritants from entering your air. Reduced air leakage and increased efficiency Reliable comfort and peace of mind Designed to maximize energy efficiency, this central air handler unit delivers reliable performance at an affordable cost.  Plus, thanks to its multi-speed fan motor, this efficient air handler delivers more even circulation to your entire home while also reducing your energy costs. Quiet, efficient operation for tight spaces Consistent comfort that's easy on your wallet This high-efficiency air handler helps provide comfortable, conditioned air all year long.  Plus, with this multi-speed air handler, you get improved air circulation, making your home much more enjoyable. Silver TEM6 Air Handler The Silver TEM6 air handlers provide high performance at a lower price.

Designed for your home needs Silver TEM4 Air Handler The Silver TEM4 air handlers are built for specific needs and systems to provide you the most reliable comfort and efficiency, reducing your energy costs. Silver TEM3 Air Handler Designed to maximize energy efficiency and reduce energy costs, this central air handler delivers reliable performance and affordable comfort.  This home air handler helps provide more even temperatures so there is less need to adjust your thermostat, reducing your energy costs. Silver TMM5 Air Handler Energy efficient home heating and cooling at a price that is easy on your wallet. Silver 4FWH Series Air Handler Using a home air handler unit hellps deliver even heating and cooling throughout your entire home, guaranteeing comfort both day and night.  This American Standard air handler unit is designed to meet the needs of a variety of systems, while also providing your home with quiet, efficient airflow that's easy on your wallet.

Silver 4FWM Series Air Handler Designed to meet the needs of a variety of systems, this small air handler provides quiet, efficient airflow that's easy on your wallet.  This compact air handler helps deliver more even heating and cooling to every room in your home.A clear explanation, with diagrams, of how a central air conditioner cools a house by cycling refrigerant through its system. A central air conditioner has a primary appliance such as an air handler or furnace located in an out-of-the-way place such as a basement or attic. This appliance pumps chilled air throughout the house through a system of air ducts—often the same system utilized by a forced-air furnace during the heating season. One or more thermostats in the house turn the cooling system off and on as room temperatures rise and fall. A central AC runs on electricity and removes heat from air with basic refrigeration principles. When the thermostat signals the air-conditioning system to lower air temperature, a whole sequence of events begins.

The air-handling unit kicks on, drawing room air in from various parts of the house through return-air ducts. This air is then pulled through a filter, where airborne particles such as dust and lint are removed—in fact, sophisticated filters may remove microscopic pollutants as well. Then the air is routed to air-supply ductwork that carries it back to the rooms. But how does the evaporator coil get cold in the first place? That is where refrigeration principles come into play. Every air conditioner has three main parts: a condenser, an evaporator, and a compressor. With a typical “split system,” the condenser and the compressor are located in an outdoor unit; the evaporator is mounted in the air-handling unit, which is often a forced-air furnace. With a “package system,” all of the components are combined in a single outdoor unit that may be located on the ground or on the roof.) Refrigerant such as freon circulates through copper tubing that runs between these components.