DOWNLOAD PDF AIR COND TESTING ADJUSTING BAL 2ND ED

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1 Chapter 1 : HVAC Systems Duct Design Air Conditioning: Testing/Adjusting/Balancing a Field Practice Manual [John Gladstone] on blog.quintoapp.com *FREE* shipping on qualifying offers. This book will show you how to keep your HVAC systems running smoothly. Introduces students to variable frequency drives VFDs as they pertain to residential and commercial motor control applications. A safety review followed by terminology, principles, test and measurement equipment use associated with VFDs and typical applications are examined. Emphasis is placed on the practical application, operation, installation and maintenance of VFDs. Examines HVAC systems code requirements for residential and light commercial buildings. Includes application of energy conservation standards, principles of building inspection, and proper equipment installation practices to discern code violations. Emphasizes practical application of safe practices, equipment layout, minimum installation requirements and legal ramifications for code violations. HVA with a grade of C or better. Examines the thermodynamic properties of refrigerants and their application for refrigeration system design. Covers factors in the selection of systems components including compressors, evaporators, condensers, metering devices and accessories used in commercial refrigeration systems. Studies the application of refrigerant line sizing selection formerly RAC Studies methods used to calculate heat loss and heat gain for residential and light commercial structures to use to determine heating and cooling loads. Examines outdoor design temperature conditions, location, infiltration loads, composite material U-values and R-values. Emphasizes practical application for calculating building loads for equipment selection by performing load calculation using charts and data analysis from the Air Conditioning Contractors of America Manual J, abridged edition. Studies priorities of air flow for residential and light commercial structures to design HVAC duct systems for efficient air distribution. Covers duct sizing principles, air distribution systems, duct materials, system performance, blower performance, and grill selection. Emphasizes practical application for residential duct sizing by using charts and data analysis from the Air Conditioning Contractors of America Manual D. Includes performing duct testing and air balancing procedures. Prior or concurrent enrollment in HVA with a grade of C or better. Examines strategies to improve communication skills to make a positive first impression, and to provide customer service excellence with urgency and empathy in every customer interaction. Focuses on the importance of displaying good manners, maintaining a positive attitude and professional appearance. Emphasizes the development of strong communication skills to address customer inquiries by listening, answering questions and providing explanations in non-technical terms. Page 1

2 Chapter 2 : Refrigeration and Air Conditioning Technology: Harper College Air Conditioning Testing - Adjusting - Balancing: A Field Practice Manual. Air Cond Testing Adjusting & Bal 2nd Ed. John Gladstone. from: $ HVAC Testing. John Kershaw, an ASE test prep expert. Choose "Study Mode" to show answers as you go. You are replacing brake pads. What is the appropriate next step for most vehicles? Remove the old brake pads b. Unbolt the caliper d. None of the above Incorrect answer, please choose another answer. A low-mileage vehicle is running hot. Assuming the radiator has enough coolant, what is the most likely problem? The block has a partial restriction. The water pump has broken down. The thermostat has stopped working. All of the above e. Either b or c Incorrect answer, please choose another answer. A car is pulling to one side as it drives. The most common causes of this problem are listed below. Which one should you check first? Uneven tire wear c. Low or uneven tire pressure d. A sticking brake caliper Incorrect answer, please choose another answer. When you replace an oil drain plug, you should retighten it according to the old maxim "snug, but not too hard. In what order should you replace spark plugs? All at once b. An entire row at once c. One at a time, starting at the bottom of the row d. One at a time, starting at the top of the row Incorrect answer, please choose another answer. You are replacing a fuel tank. What is the next step? Take the straps off the tank and drop it. Disconnect the fuel lines. Drop the rear suspension. A vehicle comes into your shop with a transmission problem. Check the fluid level b. Check for leaks c. Look at the filter d. Disassemble the transmission and check the gears. Incorrect answer, please choose another answer. Problems with spark plug wires are almost always caused by cracks in the insulation. True Incorrect answer, please choose another answer. You are completing a radiator flush. You have drained the old coolant and added the flush solution. Turn the vehicle on and let it run until it reaches its normal operating temperature. Turn the heater on and let it run at the highest setting for 10 minutes. Drain the solution and add fresh radiator coolant. An engine is misfiring. Which of the following is NOT a likely cause? The ignition timing may be set wrong. The cooling system may be malfunctioning. The fuel filter may be clogged. The vehicle may have a vacuum leak. What is the last step in a brake job? Replace the caliper assembly b. Replace and tighten the nuts c. Press the brake pedal to make sure the brake pressure is satisfactory. An air filter should not be replaced until it shows visible signs of accumulated particles. Black smoke is mixed into the exhaust of a vehicle you have been tasked to repair. Which of the following is a likely cause? Leaking fuel injectors b. A closed carburetor choke c. A dirty air filter d. Any of the above Incorrect answer, please choose another answer. Which of the following is NOT a possible cause of an engine hesitating? The air filter needs to be replaced. The ignition wires need to be replaced. The fuel filter is clogged. The engine has a vacuum leak. A vehicle is knocking when it goes over bumps or cracks in the road. Which of the following is a likely cause of the problem? Low power steering fluid b. Shocks or struts that need to be replaced. A broken tie rod d. A worn power steering belt Incorrect answer, please choose another answer. A brake pedal has to go down too far to stop. Which of the following is not likely to be a cause of this problem? Page 2

3 Chapter 3 : Formats and Editions of HVAC systems : testing, adjusting & balancing. [blog.quintoapp.com] Air Cond Testing Adjusting & Bal 2nd Ed by John Gladstone 1 edition - first published in HVAC Testing, Adjusting, and Balancing Field Manual. Natural draft[ edit ] Diagram of natural draft gas furnace, early 20th century. The first category of furnaces are natural draft, atmospheric burner furnaces. These furnaces consisted of cast-iron or riveted-steel heat exchangers built within an outer shell of brick, masonry, or steel. The heat exchangers were vented through brick or masonry chimneys. Air circulation depended on large, upwardly pitched pipes constructed of wood or metal. The pipes would channel the warm air into floor or wall vents inside the home. This method of heating worked because warm air rises. The system was simple, had few controls, a single automatic gas valve, and no blower. These furnaces could be made to work with any fuel simply by adapting the burner area. They have been operated with wood, coke, coal, trash, paper, natural gas, fuel oil as well as whale oil for a brief period at the turn of the century. Furnaces that used solid fuels required daily maintenance to remove ash and "clinkers" that accumulated in the bottom of the burner area. In later years, these furnaces were adapted with electric blowers to aid air distribution and speed moving heat into the home. Gas and oil-fired systems were usually controlled by a thermostat inside the home, while most wood and coal-fired furnaces had no electrical connection and were controlled by the amount of fuel in the burner and position of the fresh-air damper on the burner access door. Forced-air[ edit ] The second category of furnace is the forced-air, atmospheric burner style with a cast-iron or sectional steel heat exchanger. Through the s and s, this style of furnace was used to replace the big, natural draft systems, and was sometimes installed on the existing gravity duct work. The heated air was moved by blowers which were belt driven and designed for a wide range of speeds. These furnaces were still big and bulky compared to modern furnaces, and had heavy-steel exteriors with bolt-on removable panels. This style furnace still used large, masonry or brick chimneys for flues and was eventually designed to accommodate air-conditioning systems. Forced draft[ edit ] The third category of furnace is the forced draft, mid-efficiency furnace with a steel heat exchanger and multi-speed blower. These furnaces were physically much more compact than the previous styles. They were equipped with combustion air blowers that would pull air through the heat exchanger which greatly increased fuel efficiency while allowing the heat exchangers to become smaller. These furnaces may have multi-speed blowers and were designed to work with central air-conditioning systems. A condensing furnace Condensing[ edit ] The fourth category of furnace is the high-efficiency, or condensing furnace. This style of furnace includes a sealed combustion area, combustion draft inducer and a secondary heat exchanger. Because the heat exchanger removes most of the heat from the exhaust gas, it actually condenses water vapor and other chemicals which form a mild acid as it operates. The vent pipes are normally installed with PVC pipe versus metal vent pipe to prevent corrosion. The draft inducer allows for the exhaust piping to be routed vertically or horizontally as it exits the structure. The most efficient arrangement for high-efficiency furnaces include PVC piping that brings fresh combustion air from the outside of the home directly to the furnace. Normally the combustion air fresh air PVC is routed alongside the exhaust PVC during installation and the pipes exit through a sidewall of the home in the same location. Single-stage[ edit ] A single-stage furnace has only one stage of operation, it is either on or off. One of the benefits to a single-stage furnace is typically the cost for installation. Single-stage furnaces are relatively inexpensive since the technology is rather simple. Two-stage[ edit ] A two-stage furnace has to do two stage full speed and half or reduced speed. Depending on the demanded heat, they can run at a lower speed most of the time. They can be quieter, move the air at less velocity, and will better keep the desired temperature in the house. Modulating[ edit ] A modulating furnace can modulate the heat output and air velocity nearly continuously, depending on the demanded heat and outside temperature. This means that it only works as much as necessary and therefore saves energy. Heat distribution[ edit ] The furnace transfers heat to the living space of the building through an intermediary distribution system. If the distribution is through hot water or other fluid or through steam, then the furnace is more commonly called a boiler. One advantage of a boiler is that the furnace can provide hot water for bathing and washing dishes, rather than requiring a separate water Page 3

4 heater. One disadvantage to this type of application is when the boiler breaks down, neither heating nor domestic hot water are available. Air convection heating systems have been in use for over a century. Forced-air gas furnace, design circa By comparison, most modern "warm air" furnaces typically use a fan to circulate air to the rooms of house and pull cooler air back to the furnace for reheating; this is called forced-air heat. Because the fan easily overcomes the resistance of the ductwork, the arrangement of ducts can be far more flexible than the octopus of old. In American practice, separate ducts collect cool air to be returned to the furnace. At the furnace, cool air passes into the furnace, usually through an air filter, through the blower, then through the heat exchanger of the furnace, whence it is blown throughout the building. One major advantage of this type of system is that it also enables easy installation of central air conditioning, simply by adding a cooling coil at the outlet of the furnace. Air is circulated through ductwork, which may be made of sheet metal or plastic "flex" duct, and is insulated or uninsulated. Unless the ducts and plenum have been sealed using mastic or foil duct tape, the ductwork is likely to have a high leakage of conditioned air, possibly into unconditioned spaces. Another cause of wasted energy is the installation of ductwork in unheated areas, such as attics and crawl spaces; or ductwork of air conditioning systems in attics in warm climates. Central heating A home furnace is a major appliance that is permanently installed to provide heat to an interior space through intermediary fluid movement, which may be air, steam, or hot water. Heating appliances that use steam or hot water as the fluid are normally referred to as a residential steam boiler or residential hot water boiler. The most common fuel source for modern furnaces in North America and much of Europe is natural gas ; other common fuel sources include LPG liquefied petroleum gas, fuel oil and in rare cases coal or wood. In some areas electrical resistance heating is used, especially where the cost of electricity is low or the primary purpose is for air conditioning. The Manufacture of Iron -- Filling the Furnace, an wood engraving In metallurgy, several specialized furnaces are used. Furnaces used in smelters, including: Page 4

5 Chapter 4 : National Environmental Balancing Bureau - Wikipedia TESTING, ADJUSTING, AND BALANCING FOR HVAC. adjusting, and balancing (TAB) of heating, ventilating and air conditioning (HVAC) systems. 2nd Edition Check that the drive belt is positioned correctly, undamaged, and that it is tensioned correctly. Conduct a visual inspection for leaks. Check that refrigerant hoses are securely in place. Compare the pressures on the high and low-pressure sides. Read out the fault memory in newer systems. Troubleshooting on the retaining clamps or fixing points Figure 1: Troubleshooting on the retaining clamps or fixing points Check all retaining clamps and fixing points for breaks or cracks and any missing nuts or bolts. Any vibration resulting from this may be the cause of excessive compressor noise. Observe whether the noise changes if you apply force onto the retaining clamps or fixing points using an assembly lever, for example Figure 1. If the noise changes, the noises are most likely not being caused by the compressor. Troubleshooting on hoses or lines Figure 2: Troubleshooting on hoses or lines Check the hoses and lines to determine whether vibrations from the engine or pulsing refrigerant are being transmitted to the vehicle interior. For this purpose, hold them with one hand and observe possible changes in the noise Figure 2. Troubleshooting on the V-belt, clamping device, tensioner pulleys, alternator freewheel clutch, and pulleys Check the V-belt, clamping device, tensioner pulleys, alternator freewheel clutch, and pulleys for smooth running, play, and alignment. Excessive tolerances caused by worn parts can cause noise. Troubleshooting for excessive high pressure Figure 3: Troubleshooting for excessive high pressure Excessive high pressure Figure 3 can cause unusual compressor noises. If the high pressure service connection is located behind a blockage in the system, the high pressure may be higher than that indicated on the manometer. In order to diagnose such a problem, it is useful to measure the temperatures at the condenser. Contaminated refrigerant Excess or contaminated refrigerant causes excessive high pressure, which, in turn, may cause compressor noise. The same applies to refrigerant where the content of non-condensable gases air is too high. Troubleshooting for excessive high pressure Figure 4: Troubleshooting on the condenser The condenser can also be considered a cause of unusual noise. If insufficient air is routed through the condenser, the refrigerant cannot sufficiently condense and the high pressure increases excessively. This can result in unusual noises. Therefore, check whether the fan s transport s sufficient air through the condenser. Check the condenser and radiator fins for possible contamination as well Figure 4. Troubleshooting for excessive high pressure Figure 5: Troubleshooting on contaminated expansion valves Noise can often also be caused by contaminated expansion valves Figure 5 or throttle valves. This can be caused by contamination in the form of metal abrasion, for example. This reduces the refrigerant flow and causes excessive high pressure. Depending on the contamination level, refrigerant Ra or a special flushing solution, as provided by Hella Gutmann Solutions, are suitable for flushing. Compressors, dryers accumulators, expansion valves, and throttle valves cannot be flushed. Since system contamination abrasion, chips must always be assumed in the case of a compressor defect and cannot be ruled out, it is absolutely essential that the system be flushed when replacing this component. Distribution of the oil There is refrigerant oil in every component of the air-conditioning system. The oil is removed with the replaced component during repairs. It is therefore essential to refill the appropriate quantity of oil. The graphic on the right shows the average distribution of the quantities of oil within the system. For this purpose, all the oil must be siphoned off and collected. The compressor must then be refilled with the entire oil quantity specified by the vehicle manufacturer system oil quantity. To ensure that the oil is distributed equally, the compressor must be turned 10 times by hand before installation. This also corresponds to the instructions from the compressor manufacturer Sanden; specifications from the vehicle manufacturer must be observed separately in each case. Compressor filter screen Every air-conditioning system must be flushed when the compressor is replaced in order to remove contamination and foreign bodies from the system. If there is still contamination in the circuit despite flushing, damage can be prevented by the use of filter screens in the suction line â see the Hella Gutmann Solutions tool catalog. Filling the air-conditioning system with refrigerant Run-in specification for the compressor: Only fill the refrigerant using the air-conditioning service station via the high-pressure side Page 5

6 service connection to prevent pressure surges of refrigerant in the compressor. Set the switch for the fresh air fan to medium. Set the temperature to maximum cooling. Start the engine without running the air-conditioning system and run the engine for at least 2 minutes without interruption at idle speed. While at idle speed, turn on the air-conditioning system for approx. Repeat this procedure at least 5 times. Carry out a system check. Leak detector Compressor damage is also caused by a lack of refrigerant. It is therefore recommended that the air-conditioning system be maintained regularly and that contrast agent be added to the system if necessary. There are various methods of doing this â see the Hella Gutmann Solutions tool catalog. Document the use of contrast agent in the vehicle. This prevents the system from being overfilled â in extreme cases, overfilling could damage the compressor. Always replace all O-rings and coat with refrigerant oil before installation. The entire air-conditioning system must be flushed and the consumables and non-flushable components must be replaced when the compressor is replaced! These are prefilled with the required system oil fill quantity. New vehicle-specific repair information Technical information â from basic knowledge to diagnostics tips New products Marketing campaigns and competitions relevant for workshops For this, all you have to do is enter your address. If you would like to unsubscribe from the newsletter, please click here. A notification will be sent to the address you have provided. Your subscription will only be complete after you have confirmed receipt of this . This is to ensure that no one can subscribe you by mistake. Your personal information is stored and processed for the exclusive purpose of sending the newsletter. Under no circumstance will your data be given to a third party. Further information about privacy. Chapter 5 : Books by John Gladstone (Author of Ductwork Estimating for HVAC) Chantilly, VA ( Lafayette Center Dr., Chantilly ): Sheet Metal and Air Conditioning Contractors' National Association 2. HVAC systems testing, adjusting & balancing. Chapter 6 : National Environmental Balancing Bureau - Wikipedia adjusting and balancing of environmental or Heating, Ventilating and Air-conditioning (HVAC) systems. Today's buildings provide highly controlled indoor environments. Chapter 7 : HVAC Systems Applications Carrier Air Conditioning Company, Handbook of Air-Condi tioning System Design, McGraw-Hill, New York, Google Scholar J. Gladstone, Air-Conditioning Testingâ Adjustingâ Balancing: A Field Practice Manual, 2nd ed. Chapter 8 : Air conditioning compressor â defects, checking, changing BEHR HELLA TESTING, ADJUSTING, AND BALANCING FOR HVAC UNIFIED FACILITIES GUIDE SPECIFICATIONS SMACNA CD () HVAC Air Duct Leakage Test Manual - 2nd Edition. Chapter 9 : NEBB Procedural Standards NEBB The second manual is the SMACNA HVAC Systems∠Applications manual that contains information and data needed by designers and installers of more specialized air and hydronic HVAC systems. The third manual is the HVAC Systems∠Testing, Adjusting and Balancing manual, a recently∠updated publication on air and hydronic system testing and. Page 6