HL Fan-coil Units Low-Profile, Horizontal - Enviro-Tec
HL Fan-coil Units Low-Profile, Horizontal - Enviro-Tec
HL Fan-coil Units Low-Profile, Horizontal - Enviro-Tec
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<strong>HL</strong> <strong>Fan</strong>-Coil <strong>Units</strong> <strong>Low</strong>-<strong>Profile</strong>, <strong>Horizontal</strong> Catalog: ET115.26-EG7 (908)GUIDE SPECIFICATIONSGENERALFurnish and install ENVIRO-TEC ® Model <strong>HL</strong> <strong>Horizontal</strong>Concealed Direct Drive <strong>Fan</strong> Coil <strong>Units</strong> where indicatedon the plans and in the specifications. <strong>Units</strong> shall becompletely factory assembled, tested and shipped asone piece. All units shall be capable of meeting orexceeding the scheduled capacities for cooling, heatingand air delivery. All unit dimensions for each model andsize shall be considered maximums. <strong>Units</strong> shall be ETLlisted in compliance with UL/ANSI Standard 1995, andbe certified as complying with the latest edition of ARIStandard 440.CONSTRUCTIONAll unit chassis shall be fabricated of heavy gaugegalvanized steel panels able to meet 125 hour saltspray test per ASTM B-117. All exterior panels shallbe insulated with 1/2" thick insulation with a maximumk value of .24 (BTU • in) / (hr • ft 2 • °F) and rated fora maximum air velocity of 5000 f.p.m. Insulation mustmeet all requirements of ASTM C1071 (includingC665), UL 181 for erosion, and carry a 25/50 ratingfor flame spread/smoke developed per ASTM E-84,UL 723 and NFPA 90A.All concealed units shall have a minimum 1-1/2" ductcollar on the discharge. Plenum and exposed unitsshall have a minimum 3/4" duct collar on the return.All exposed units shall have exterior panels fabricatedof galvannealed steel. The fan and filter bottomaccess panel shall be attached with quarter turn quickopen fasteners to allow for easy removal and accessfor service.Option: Provide foil faced insulation in lieu of standard.Foil insulation shall meet or exceed the requirementsstated above, and in addition meet ASTM StandardsC-665 and C-1136 for biological growth in insulation.Insulation shall be lined with aluminum foil, fiberglassscrim reinforcement, and 30 pound kraft paper laminatedtogether with a flame resistant adhesive. Allexposed edges shall be sealed to prevent any fibersfrom reaching the air stream.Option: Provide Elastomeric Closed Cell Foam Insulationin lieu of standard. Insulation shall conform to UL 181for erosion and NFPA 90A for fire, smoke and melting,and comply with a 25/50 Flame Spread and SmokeDeveloped Index per ASTM E-84 or UL 723. Additionally,insulation shall comply with Antimicrobial PerformanceRating of 0, no observed growth, per ASTM G-21.Polyethylene insulation is not acceptable.Unit mounting shall be by hanger brackets provided atfour locations. Hanger brackets shall include rubbergrommet isolators with brass eyelets for threaded rod.PAINTED FINISHAll painted cabinet exterior panels shall be finished witha heat cured anodic acrylic powder paint of the standardfactory color.SOUND<strong>Units</strong> shall have published sound power level datatested in accordance with ARI Standard 350-2000 (nonductedequipment) and ARI Standard 260-2001 (ductedequipment).FAN ASSEMBLYUnit fan shall be a dynamically balanced, forwardlycurved, DWDI centrifugal type constructed of 18 gaugezinc coated galvanized steel for corrosion resistance.Motors shall be high efficiency, permanently lubricatedsleeve bearing, permanent split-capacitor type with ULand CSA listed automatic reset thermal overload protectionand three separate horsepower taps. Single speedmotors are not acceptable.The fan assembly shall be easily removable for servicingthe motor and blower at, or away from the unit. Theentire fan assembly shall be able to come out of theunit by removing two screws and unplugging the motor.Plenum unit fan assemblies shall be easily servicedthrough an access panel provided.Option: Provide an electronic (SCR) fan speed controlleras an aid in balancing the fan capacity. The speedcontroller shall have a turn down stop to prevent thepossibility of harming the motor bearings, and incorporateelectrical noise suppression to minimize noise onthe incoming power lines.Option: Devices used to energize and de-energize(switch) fan speeds must be totally silent. Magnetic,mercury, and/or quiet relays and/or contactors are notacceptable.COILSAll cooling and heating <strong>coil</strong>s shall optimize rows andfins per inch to meet the specified capacity. Coils shallhave seamless copper tubes and shall be mechanicallyexpanded to provide an efficient, permanent bondbetween the tube and fin. Fins shall have high efficiencyaluminum surface optimized for heat transfer, airpressure drop and carryover.ENVIRO-TEC 19
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