Jack Lehr Electric - Air Conditioning (20-130 Tons)

Jack Lehr Electric › Air Conditioning (20-130 Tons)

Industrial/Commercial 20 - 130 Ton Rooftops !http://energywebsolutions.net/img/1909/5298.jpg! IntelliPak® is a commercial rooftop air conditioner featuring unique microprocessor controls which afford building owners and contractors the most powerful and flexible package rooftop unit available. These factory-assembled, self-contained units are available in cooling-only or in heating/cooling combination models. h2. Powerful Microprocessor Controls Trane's rooftop Unit Control Module (UCM) is an innovative, modular microprocessor control design. The UCM coordinates the actions of the rooftop in an efficient manner and provides stand-alone operation of the unit. Access to unit controls is via a Human Interface Panel which is a standard component of the IntelliPak® rooftop. This panel provides a high degree of control, superior monitoring capability, and unmatched diagnostic information using a 2 line, 40 character per line, English language display. There are no diagnostic "codes" requiring a translation key for interpretation. All system status information and control adjustments can be made from the onboard Human Interface Panel. Modular Components IntelliPak®'s functionally distributed modular design enable it to grow with the emerging needs of your building or to accommodate system design updates. And with such features as removable, discrete microprocessor boards, servicing IntelliPak® is as simple as changing a single problem board, without replacing an entire "motherboard'. All of this relates to lower service/replacement expense and reduced First Cost. Comprehensive Diagnostics Virtually every HVAC operating parameter is available for analysis. Up to 54 different diagnostics can be displayed and alarmed at IntelliPak®'s Human Interface to alert you to potential problems before they cost money such as: sensor failures, coil frost protection, freezestat control, and short cycle/motor winding temperature prevention. All diagnostic displays are available in clear English, Spanish, or French, and will be held in memory so that the operator/servicer can diagnose the cause of failures. The diagnostics are easy to access at the unit Human Interface, at the optional Remote Human Interface, or at the Tracer® Building Automation System's screen. h2. 3-D® Scroll Compressors Simple Design with 70% Fewer Parts Fewer parts than an equal capacity reciprocation compressor means significant reliability and efficiency benefits. The single orbiting scroll eliminates the need for pistons, connection rods, wrist pins and valves. Fewer parts lead to increased reliability. Fewer moving parts, less rotating mass and less internal friction means greater efficiency that reciprocating compressors. Patented 3-D Scroll Compliance Trane 3-D Scroll compliance provides important reliability and efficiency benefits. 3-D compliance allows the orbiting scroll to touch in all three dimensions, forming a complete enclosed compressor chamber which leads to increased efficiency. In addition, 3-D compliance means the orbiting scrolls only touch with enough force to create a seal so there is no wear between the scroll plates. The fixed and orbiting scrolls are made of high cast iron which results in less thermal distortion, less leakage, and higher efficiencies. The most outstanding feature of the scroll compressor 3-D compliance is that slugging will not cause failure. In a reciprocating compressor however, the liquid or dirt can cause serious damage. Low Torque Variation The 3-D Scroll compressor has a very smooth compression cycle with torque variations that are only 30 percent of that produced by a reciprocating compressor. This means the scroll compressor imposes very little stress on the motor for greater reliability. Low torque variation means reduced noise and vibration. Suction Gas Cooled Motor Compressor motor efficiency and reliability is further optimized with this design. Cool suction gas keeps the motor cooler for longer life and better efficiency. Proven Design Through Testing and Research With over twenty years of development and testing, Trane 3-D Scroll compressors have undergone more than 400,000 hours of laboratory testing and field operation. This work combined with over 25 patents makes Trane the worldwide leader in air conditioning scroll compressor technology. h2. System Control IntelliPak® systems are not add-on aftermarket control products. They are fully integrated, factory-tested systems which may be used as either a stand-alone product, or coupled with a Trane Tracer® Building Management System, in which the IntelliPak®'s power increases substantially. Every point and diagnostic within IntelliPak® is accessible to Tracer®. By using a modem, Tracer® can inspect IntelliPak®'s performance at virtually any remote location, and even call you or your service contractor should a problem ever occur. Inlet Guide Vane Control Forward Curved (FC) fans with Inlet Guide Vanes have always been the hallmark of Trane commercial rooftops. This combination offers superior operating efficiencies comparable to inverter driven fans for a fraction of the cost. IntelliPak® offers Trane's time-tested Inlet Guide Vane design as a standard option. Variable Frequency Drives (VFDs) Variable air volume supply air temperature control can now be accomplished in a more efficient manner. Variable Frequency Drives are a Standard Option! these drives are factory installed and tested to provide supply/exhaust fan motor speed modulation, and they also provide the ultimate in fan energy savings to your building. The VFD's are available with or without a bypass option. Bypass control will simply provide full nominal airflow in the event of drive failure. Building Pressurization Control Trane's direct space building pressurization control is an accurate and efficient method of maintaining building pressure with a large rooftop air conditioner. The efficiency is achieved with a 100 percent modulation exhaust system with two forward-curved fans with modulating discharge dampers or Variable Frequency Drives (VFD) that operate only when needed. Ventilation Override Module A variety of ventilation scenarios are often required to handle the needs of today's building. The Ventilation Override Module (VOM) comes preprogrammed from the factory with five ventilation sequences to help meet those needs. With a simple contact closure initiating any of the unit's ventilation sequences, the Fire and Life Safety Panel can assume control of the IntelliPak® rooftop. Factory sequences which do not meet individual building requirements can be reprogrammed at the job site simply by redefining the states of the ventilation components, thus creating custom ventilation routines. To enhance safety, such routines can also be programmed to become unalterable. Factory-tested and commissioned ventilation controls virtually eliminate time-consuming and expensive on-site unit modifications. The VOM is configurable through the Human Interface, the Remote Human Interface, or the Trane Tracer®. Generic Building Automation System (GBAS) Module An IntelliPak® rooftop and its many advantages can be integrated into an existing, less powerful building management system simply with a generic BAS interface module. The GBAS module accepts four analog point inputs for operating control and five binary outputs. Even building management systems which fall short of "cutting edge" can be transformed into a powerful, stand alone IntelliPak® system. Indoor Air Quality Indoor air quality is critical to occupant comfort, and it is becoming increasingly important as we move into the 21st century. IAQ is taken very seriously at the Trane company. All IntelliPak® Rooftops provide many features which improve indoor air quality and maximize operating efficiency. Compensated Outdoor Air Control When the inlet guide vanes modulate open, the economizer minimum position decreases to let less outside air in, and when they modulate closed, the economizer minimum position increases to let more outdoor air in. This outside air compensation function maintains a relatively constant outside air flow ration to the supply air percentage as it increases and decreases. Compensated outdoor air control can also be accomplished with supply fan Variable Frequency Drives. Some benefits include: * Minimizes variation of outside air cfm that typically occurs on VAV applications * Improved ventilation on VAV applications * Customized parameters can be set based on each individual application. Traq™ Sensor Trane's Air Quality (TRAQ™) Ventilation Control system is designed to measure and modulate airflow. The standard rooftop unit dampers are used to modulate return and outside air quantities. The Traq™ sensor assembly includes the metered orifices, the velocity pressure flow rings, a pressure transducer/calibration solenoid combination and a unit control module called the Ventilation Control Module, or VCM. The VCM monitors and controls the quantity of ventilation (outside) air entering the unit. Supply Air Tempering When the supply air temperature falls below the supply air temperature deadband low end, the heating valve is modulated open (or a stage of heat is activated in the case of gas or electric heat units) to maintain the set minimum supply air temperature. This reduces cold air dumping that occurs when the mixed air temperature is lower than the zone setpoint. This typically occurs during winter months when a cooling load still exists in the space, and the outside air temperature is cool. This case is exaggerated when the percent of outside air is high. This feature is available on Constant Volume applications with either gas or electric heat, or Variable Air Volume applications with hydronic heat. Double Wall Construction Taking the insulation out of the airstream means the unit is less likely to breed unwanted germs that might lead to a "sick' building. Pitched Drain Pans The pitched drain pan design assures positive drainage of condensate from the unit. Also, drain pan construction of optional stainless steel material is available. High Efficiency Filters 90-95 Percent Bag Filter (with prefilter) - Glass fiber extended media bag filter is mounted in a galvanized steel frame. 90-95 percent dust spot efficiency. 90-95 Percent Cartridge Filter (with prefilter) - These twelve-inch deep cartridge filters are mounted in a galvanized steel frame. They are Class 1 listed by Underwriters Laboratories and have a 90-95 percent dust spot efficiency per ASHRAE 52-76. Special HEPA and Charcoal filters. h2. Factory Run Test An exhaustive run-test of the assembled unit is performed on every Trane IntelliPak® rooftop to assure reliable operation and quick unit installation. * Fans are run-tested before and after installation to assure correct balance and performance. * Coils are leak and burst-tested in a dunk tank to detect leaks before they are installed in the unit. The coils and all connecting piping are tested again after being installed in the unit. * All rooftops are tested for water leaks in base minimizing change of getting water in the building through the unit. * System controls are tested at a run test area before installation in the unit. this helps find faulty electrical components before the unit operates. h2. Installation Savings As a result of all control points being fully integrated into the same intelligent controller, any set up or changes to these points can be made via key strokes. Therefore, many manual functions have been eliminated. Some examples of these are: Inlet vane setup Pressure setpoint and inlet van maximum position can now be read and adjusted through the Human Interface. This eliminates the use of a manometer when setting up the inlet vane pressure switches. * System air balancing Pressure setpoint changes, or inlet vane maximum position changes, may allow air balancing to occur SIMPLY THROUGH KEY STROKES AT THE HUMAN INTERFACE. * Reduction in sensors Since all controls are fully integrated, one sensor may support multiple applications. EXAMPLE: A single zone sensor will support morning warm-up, night setback, and zone reset applications. Without integration, these three applications would require three sensors. SAVINGS: Labor and material required to install and wire two additional sensors. h2. Economizing 0-100% Economizer The economizer includes the primary temperature controls necessary to automatically use outdoor air for free cooling. This option includes modulating return and outside air dampers, enthalpy lockout, minimum position control and spring return motor. It is provided with standard low leak outside air dampers with a leakage rate of 2.5 percent of nominal airflow at one inch Water Column static pressure. Comparative Enthalpy This is used with the fresh air economizer. This system measures outdoor air enthalpy and compares it to a fixed reference enthalpy, which is set through the Human Interface panel. Reference Enthalpy This is also used with the fresh air economizer. This system measures outdoor air enthalpy and compares it to a fixed reference enthalpy, which is set through the Human Interface panel. h2. Heating Options Natural Gas Heat Natural gas heat units are available with either two state, limited or full modulation heaters. Two Stage and Limited Modulation A two pass stainless steel tubular free floating heat exchanger has industrial type burner and combustion blower. Limited modulation heaters have a minimum turn down ratio of 3 to 1. Two stage heaters are offered with high or low fire. Full Modulation Gas Heaters - are constructed from grades of stainless steel suitable for condensing situations. These heaters have a turn down ratio of at least 4 to 1. All heaters are offered in a variety of heating capacities. Electric Heat Rooftops with electric heat have nickel-chromium electric heating elements in individually fused circuits of 48 amps or less and with all necessary safeties. A full range of sizing options is available. Steam Heat The steam heat option is ARI certified type NS coil with non-freeze steam distribution. Coils are pitched for drainage and are provided with steam modulation valve with actuator. High and low heat options are available. Hot Water Heat The hot water coil is an ARI certified type W coil mounted for drainage and provided with hot water modulating valve with actuator. High and low heat options are available. Specials Options The following list shows a few of our special options that have UL or CSA approval. * DX cooling with propane gas heat * Burglar bars installed over supply/return air openings in base * Copper finned evaporator or condenser coils * Phenolic coated evaporator or condenser coil * Horizontal supply and/or return * Special paint * Service lights * Variety of special filter racks * Adjustable speed sheaves * Solid or perforated double wall construction