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Working of contactor: A simple circuit diagram
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At the end of this web site there is additionally a Trane Air Conditioner Wiring Diagram photo gallery, if the photo above is not enough for you. Tags: trane air conditioner wiring diagram trane air conditioner wiring schematic trane air conditioning wiring diagrams trane xe air conditioner wiring diagram. Toggle navigation. Gravely K Wiring Diagram.Within the electrical industry, the ring main circuit sometimes ring main, or ring final circuit is an electrical wiring technique that is most commonly used in the UK.
The ring circuit is made up of two radial circuits connected to the same series of accessories within the circuit. This arrangement allows the use of conductors with smaller cross-sectional areas compared to a regular radial circuit arrangement. It is also a requirement that all connected appliances must be individually fused usually within the 13A plug. Please observe the wiring diagram above. As you can see the circuit starts and ends at the consumer unit.
This means that every single accessory will have wires coming to it and wires leaving from it towards the next accessory and eventually terminating the circuit at the consumer unit. The images bellow show a socket and an FCU with the circuit going in and out. It is the same arrangement in the consumer unit as well. Since the circuit goes around and ends at its starting point, the protective device usually an MCB will have two brown wires in its terminals as demonstrated in the picture bellowand the Neutral and Earth bars will also have two wires in their corresponding terminals for the Neutral and Earth wires.
Trane Air Conditioner Wiring Diagram
As you can see, wiring a Ring Main is relatively easy. All you have to do is to start at the consumer unit with a length of appropriate cable, go around your area and "pick up" all your sockets and FCUs and then return to the consumer unit to end the circuit.
Even though the spur is the part of the same ring main circuit, it is not part of the ring itself, because the socket which is spurred off only has one cable going to it. You can clearly see on the wiring diagram that a cable is going to it but nothing going from it! The rule is that you can spur off one socket from a point within a Ring Main circuit or unlimited number of FCUs fused to 13A. The main purpose of a spur is adding an extra socket on to an existing Ring Main circuit.
As you can see, it eliminates the need to wire a socket all the way back to the a consumer unit, but the nearest Ring Main socket is used instead. Having this in mind, please have a look at the table bellow indicating common ring circuit arrangements:.
As you can see from this table, a common arrangement is to use the 2.Fan Coil Unit - FCU HVAC
This arrangement allows for the coverage of m2 which is more than enough for domestic use. That is exactly why this arrangement is the preferred one for domestic properties. Usually there would be one ring main for all the ground floor accessories and another one for the first floor accessories. Circuits wired with 4mm2 cross-sectional are only used in commercial and industrial premises where cable runs are much longer and the larger cross-sectional area is there to take voltage drop in account.Chilled Water Schematic and Condenser water schematics.
Scroll to the bottom to watch the YouTube Video tutorial. Danfoss Learning has are hundreds of courses available in a variety of languages. And the eLessons cover a wide range of topics, including, of course, chillers.
Getting started is easy. Just follow this link and choose your first lesson. Firstly, every chilled water schematic you look at will be completely different. The symbols used are always similar, enough to recognise what they are, but always slightly different. However, they will all show how the chilled and or condenser water system is connected and distributed around a building. They will also show the main components such as valves and pressure sensors etc.
They should also show which floor the component is located. They usually will not display every Air handling unit and fan coil unit connected to the system.
The contractors should provide the landlord with a copy of their own drawings for their area. Additionally, remember schematic drawings will not show every bend or the exact route through the building. They are simply a flat 2D representation of the system.
This shows you how the system works and where each part is located. The two in the top right and the one in the bottom right are all air cooled chillers and the rest are water cooled. The components of each system are similar but as you can see the design does vary and not every chiller install will use the exact same setup or components. The chiller will read this to control its performance. I made another video previously on how to measure the flow rate of a chiller using this device, check it out here.
These are used to either flush the system and bypass the chiller to stop dirt going into the heat exchanger during the system clean or in this case its used to balance the system as its an old constant volume system so this can be used to simulate the pressure drop of the chiller if the chiller is isolated for maintenance. In newer systems you will find a motorised control valve here which is connected to the Building Management System and allows remote control.
Over time these generally become less reliable and the gauges often get stuck.There are three types of fused connection units: - unswitched, switched with flex outlet and switched without flex outlet. Fused connection units are used as a means of connecting permanent appliances such as cooker hoods to the electrical circuits of the house.
Examples of uses of FCU are, cooker hoods see Installing a cooker hoodhidden sockets for kitchen appliances see Installing wiring for kitchen appliancesextractor fans see Installing wiring for an extractor fanshaver sockets see Installing a Shaver Socket and waste disposal units see Installing wiring for a waste disposal unit. To install a fused connection unit, break into the existing ring main or more likely run a spur from an existing socket see Adding a spur to a ring circuit from a socketor from a junction box see Adding a spur to a ring circuit from a junction box.
Once this has been completed and the cable is running to the position where the new FCU is required, fit a mounting box to hold the FCU securely in place, see Installing a electrical mounting box for full details of how to complete this task. See the pages mentioned above for examples.
On the FCU there should be 6 screw terminals, 3 for the mains supply and 3 for the load. The flex for the appliance should be connected to the load terminals. Strip and prepare the ends of the flex see Preparing the cable for connection. Connect the appliance flex to the 3 terminals. Now the FCU is ready to be connected to the Mains supply. Next connect the mains cable to the FCU.
Do you have a question or comment about this topic? Toggle navigation. Home How to Fitting a Fused Connection Unit. Cost: Difficulty:. Caution Electricity is dangerous and can be hazardous. In doubt? Call a qualified electrician. There are currently no related questions for this topic.Fluid catalytic cracking FCC is one of the most important conversion processes used in petroleum refineries.
It is widely used to convert the high-boiling, high-molecular weight hydrocarbon fractions of petroleum crude oils into more valuable gasolineolefinic gases, and other products. It also produces byproduct gases that have more carbon-carbon double bonds i. This portion of crude oil is often referred to as heavy gas oil or vacuum gas oil HVGO.Diagram based wiring diagram for ls45 new holland
In the FCC process, the feedstock is heated to a high temperature and moderate pressure, and brought into contact with a hot, powdered catalyst. The catalyst breaks the long-chain molecules of the high-boiling hydrocarbon liquids into much shorter molecules, which are collected as a vapor. Oil refineries use fluid catalytic cracking to correct the imbalance between the market demand for gasoline and the excess of heavy, high boiling range products resulting from the distillation of crude oil.
As ofFCC units were in operation at petroleum refineries worldwide and about one-third of the crude oil refined in those refineries is processed in an FCC to produce high-octane gasoline and fuel oils. FCC units are less common in EMEA because those regions have high demand for diesel and kerosene, which can be satisfied with hydrocracking.
In the US, fluid catalytic cracking is more common because the demand for gasoline is higher. The modern FCC units are all continuous processes which operate 24 hours a day for as long as 3 to 5 years between scheduled shutdowns for routine maintenance.
There are several different proprietary designs that have been developed for modern FCC units. Each design is available under a license that must be purchased from the design developer by any petroleum refining company desiring to construct and operate an FCC of a given design.
There are two different configurations for an FCC unit: the "stacked" type where the reactor and the catalyst regenerator are contained in two separate vessels, with the reactor above the regenerator.
There is a skirt between these vessels allowing the regenerator off-gas piping to connect to the top of the regenerator vessel.
And the "side-by-side" type where the reactor and catalyst regenerator are in two separate vessels. The stacked configuration occupies less physical space of the refinery area. These are the major FCC designers and licensors:    . Each of the proprietary design licensors claims to have unique features and advantages. A complete discussion of the relative advantages of each of the processes is beyond the scope of this article.It's important to examine your blueprints with the HVAC arrangements if you are in the process of designing a building.
Don't miss out on free HVAC symbols and floor plan software. The following HVAC equipment symbols contains pump, fan, moisture eliminator, filter, silencer, valve, compressor, muffler, etc. The Pump is a mechanical device using suction or pressure to raise or move liquids, compress gases, or force air into inflatable objects such as tires.
The Silencer is a device fixed to the exhaust of a motor vehicle to reduce engine noise. The Condenser is an apparatus or container for condensing vapour into liquid. It is also known as Heat transfer.
The Muffler is a device used to reduce the noise of an engine or deaden the sound of an instrument. The Filter is a porous device for removing impurities or solid particles from a liquid or gas that passes through it. The Nozzle is a cylindrical or round spout at the end of a pipe, hose, or tube used to control the direction or the velocity of gas or liquid flow. The Chiller is a machine for removing heat from a liquid through a circle of vapor cmpression, absorption and refrigeration.
The following HVAC ductwork symbols show the different ductworks and junctions such as straight duct, miter bend, miter bend, 3 way junction, Y junction, and transition. The Transition is the process or a period of changing from one state or condition to another.
The following HVAC controls symbols include commonly used shapes that represent for measuring temperature, flow, velocity, voltage, current, light, timer, power, and more.
Installing a fused connection unit (FCU)
The Duct is a tube or passageway in a building or machine for air, liquid, cables, etc. You can easily drag and drop any symbols on the canvas to make an HVAC plan. In addition, you are able to learn the HVAC plan design guide here. Edraw Max is perfect not only for professional-looking flowcharts, organizational charts, mind maps, but also network diagrams, floor plans, workflows, fashion designs, UML diagrams, electrical diagrams, science illustration, charts and graphs A versatile cross-platform mind mapping tool.
Effortlessly create over types of diagrams. Drag and drop interface and easy to use Customize every detail by using smart and dynamic toolkits Compatible with a variety of file formats, such as MS Office, Visio, PDF, etc.An FCU is a socket with an integral fuse used for connecting high-wattage appliances, such as cookers, extractor fans, central heating timers and heaters, to a circuit.2001 chevy astro van dimensions
You can connect an FCU to a circuit by replacing an existing socket outlet with an FCU, or by running a spur from a socket outlet on a ring main circuit or from a radial circuit. FCUs can be flush-mounted which allows the cable to be concealed in the wall, or wall mounted with the cable covered by trunking. An FCU is fitted with a fuse holder in the face-plate that takes a 3 amp fuse for appliances using up to watts and a 13 amp fuse for appliances using higher wattage.
They may also have a neon indicator light. An FCU is fitted with two sets of terminals. Be aware that the Mains terminals can also called Feed or Supply. Join an existing conversation or create a new thread related to Electrical in our DIY forum. The colour-coding system for electric cable changed inmake sure you read Electric cable and flex to view the new information.
Print Page. Summary: Learn how to prepare and wire a fused connection unit FCU. Preparation Cut off the power supply to the relevant circuit from the consumer unit. Remove the fuse or switch off the MCB protecting the circuit you will be working on. All appliances connected to the circuit should be unplugged. If the FCU is replacing an existing socket outlet, remove the face-plate of the socket and release the cores from the terminals.
Alternatively, if the FCU is being fitted on a new spur, plan the cable route to where the FCU mounting box is to be positioned. Fit the FCU at a convenient height e. If the cable from the FCU to the appliance is to be concealed in the wall, use two-core-and-earth cable and not flex. The mounting box for an FCU is the same type used for socket outlets. Prepare the end of the cable, flex and cores. If any Earth cores are bare, cover the exposed end with a green-and-yellow sheath.
A fused connection unit. Feed the flex from the appliance into the FCU mounting box. Connect the brown live core from the flex to the Live terminal marked L and Load or Out. Connect the blue neutral core from the flex to the Neutral terminal marked N and Load or Out.Letra da reza de oya
Connect the yellow and green core from the flex to one of the Earth terminals. Some FCUs may only have one Earth terminal in which case delay connecting the earth core from the flex until you are ready to connect the earth core from the cable, and connect them at the same time.
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