Buffalo Air Handling Big Buffalo

1 BuffaloAir HandlingBig BuffaloCustom ApplicationsBulletin C6200 MAY 2013 Buffalo AIR HANDLING1 The historic strength of Buffalo AirHandling is the custom designed airhandling equipment that controls theindoor environment of some of theworld s most prominent you improve the environmentin which we live and work is BuffaloAir Handling s most important Buffalo is the most efficientway to factory fabricate large air han-dling systems for today s sophisticat-ed buildings. With an almost unlimit-ed range of capacities, pressures, andcomponent arrangements to choosefrom, you can design the most eco-nomically sized air Handling system tomeet your HVAC bulletin is a thought starteron how to put Big Buffalo to work foryou, illustrating several equipmentarrangements and construction fea-tures.

2 Also, included in this bulletinare typical air Handling unit guidelinespecifications to assist in creatingyour own the experience of aBuffalo Sales Engineer as you reviewthese Big Buffalo air Handling sys-tems. As graduate engineers,schooled in the fundamentals of psy-chrometrics and air flow, they areanxious to share with you their prac-tical experience in the application ofthese versatile air Handling backbone of a Big Buffalosystem is the heavy gauge double-wall panel mounted on a weldedstructural steel channel base.

3 Basiccasing design consists of 2 or 4 dou-ble-wall G90 mill galvanized steelpanels; 14 gauge outer and 20 gaugeinner, with 2 or 4 3lb/ft3fiberglassinsulation. Stainless steel or alu-minum double-wall construction three members of the buildingteam owner, engineer, and contrac-tor benefit from our Big Buffalo equipment because of the followingfeatures: Reduced time in design andfield installation Single-source system respon-sibility; a manufacturer whodesigns, builds, and guaran-tees its own casing, and chan-nel base, along with the per-formance of the fans and coils Standardization of componentconstruction Controlled uniform quality during manufacturing Built-in serviceability Reduced operating and main-tenance costs Optimum performance fromquality components Startup and installation super-vision Factory performance, sound,vibration and leakage testing.

4 Substantiates the validationprocedures required by manyownersBuffalo Air HandlingBig BuffaloBuffalo Air Handling s Engineering Design Department can pro-vide detailed drawings in 2D and 3D formats, which can be elec-tronically submitted to the customer2 This roof-mounted variable volume central stationcabinet contains centrifugal supply and return fans,economizer section, sound attenuation, and highefficiency filtration. The application is for a hospital operating advantage of factory built equipment is BuffaloAir Handling s complete unit assembly prior toshipment, which reduces field installation time clean room requirements were incorporat-ed into a compact design with low vibration axialfans.

5 Direct drive plenum fans have also been utilized for clean room SystemsThis all stainless steel unit was supplied to a pharmaceutical facility. The fan was also con-structed of stainless AIR HANDLING3 This fan section is the heart of aBig Buffalo air Handling Air Handling guarantees theperformance on all centrifugal, plenumand axial fans used in our Big Buffaloair Handling requiring a centrifu-gal double inlet fan are provided witha reliable flat backward inclined or air-foil fan. The flat backward inclined orairfoil shaped blades produce non-overloading performance characteris-tics.

6 The fan bearings are designed fora minimum L10 life of 40,000 hours(80,000 hours, L10 life optional). Axialflow fan applications use fans withadjustable-pitch blades at rest fans can be provided forreturn fan applications and where mul-tiple discharges are combined with variable fre-quency drives provide the most energyefficient air Handling system. Factoryinstallation assures single FeaturesAxial flow fans with adjustable blades arefrequently specified where space is at apremium. Mixed flow fans can be fans can be efficiently selected forreturn fan applications where space vibration on an all-welded structural steel channel baseis essential for reliable fan performance.

7 High pressure andcritical applications may require an inertia vibration basewhere concrete is field installed. A heavy-duty flexible connec-tion between the fan and unit casing is provided for internallyisolated fan, motor and drive are mountedon a heavy all-welded structural steelvibration isolation base with isolatorsproperly selected for specified vibra-tion Air Handling provides all-welded, patent-ed, triple-sloped, IAQ stainless steel drain pansdownstream of the cooling coils. Heating and cooling coils in ourBig Buffalo air Handling systems aremanufactured by Aerofin.

8 As anoption, Buffalo Air Handling can pro-vide installation for alternate coil heating, cooling and heatrecovery coils are provided in bothplate and helically wound fin designsin either aluminum or copper. Tubewall thickness varies from , as required for the thicknesses from to are most commonly specified. Featuressuch as individually drainable headers,removable headers, and stainless steelcasings are frequently integral face-and-bypasscoils are available for maximum freeze protection in 100% outside coils with either 5/8 or 1 tubes in a variety of fin spacingsprovide even leaving air temperaturesover a wide range of heat wheels, heat pipes,and glycol run-around coils can be pro-vided for heat recovery components, such as inletlouvers, dampers, blenders, filters,sound attenuators.

9 Humidifiers, desic-cant dehumidifiers and accessplenums, are provided as Air Handling s revolution-ary Aerofil provides low cost, lowmaintenance evaporative cooling or humidification for year-round FeaturesIndependent coil support racks can be providedto permit individual removal of heating or cool-ing coils. Cooling coils stacked two or more highhave individual extended drain troughs anddownspouts to properly drain AIR HANDLING5 Construction FeaturesDouble-wall heavy gauge galvanizedsteel construction using 14 gauge outerand 20 gauge inner panel is inner wall construction ofgalvanized steel or aluminum are avail-able as options.

10 Special applicationsfor operating pressures to 30 WG canalso be units are constructed on a welded structuralsteel channel base with a heavy gauge floor sheetto support internal components. Also shown areperimeter angles for ease of joining unit sectionstogether in the can be designed into unitswhere inspection, maintenance andservice is required. Double-wall flush-mounted doors are designed to openopposite the unit s operating is a full height, full width distribution plate thatreduces pressure drops by 50% or greater when compared toconventional control is extremely impor-tant with high pressure systems.