Magic AIre



Magic Aire1.2 05252016501 Galveston StreetWichita Falls, TXPhone(940) 397-2100Web SiteProduct Guide Specification********************************************************************************************************************SECTION 23 82 19Air Handling Units – Model HHDucted or Free DischargePART 1GENERAL1.1SECTION INCLUDESAir Handling Units, also called blower coil or fan coil units, consisting of direct drive plenum fan, coils, drain pan, filters and controls housed in a cabinet. Units are designed to condition a space by circulating air over finned coils which contain a conditioning fluid. Fluids may be steam, water, ethylene glycol mix, propylene glycol mix or refrigerant. Electric Heat may also be offered. Air Handling Units are used in both heating and cooling applications. 1.2RELATED SECTIONS0170815Specifier Notes: Edit the following list as required for the project. List other sections with work directly related to the Fan Coils.00Specifier Notes: Edit the following list as required for the project. List other sections with work directly related to the Fan Coils.Section 23 01 80 - Operation and Maintenance of Decentralized HVAC Equipment.Reference manufacturer’s Installation and Operations Manual for complete instructions.Section 23 05 29 - Hangers and Supports for HVAC Piping and Equipment.Section 23 05 66 - Anti-Microbial Coatings for HVAC Ducts and EquipmentSection 23 07 16 - HVAC Equipment InsulationSection 23 09 13.13 - Actuators and OperatorsSection 23 09 13.43 - Control ValvesSection 23 09 13.53 - Control DampersSection 23 41 13 - Panel Air Filters (Throw-away)Section 23 41 23 - Extended Surface Air Filters (Pleated – MERV 7)Section 23 41 33 - High Efficiency Particulate Filtration (Pleated – MERV 13/14, as available)Section 23 41 43 - High Efficiency Particulate Filtration (Pleated –MERV 16, HEPA class E12 or better as available) Section 23 72 00 - Air-to Air Energy Recovery Equipment(Reserved for future option-as available) Section 23 09 13.23 - Sensors and Transmitters (econ controls temp sensors)Section 23 05 66 - Anti-Microbial Ultraviolet Emitters for HVAC Ducts and Equipment (as available)Section 23 41 16 - Renewable Media Air Filters (as available)REFERENCESUnited Electric Company designs and builds its Magic Aire products to comply and perform to the following standards as applies:Insulation and adhesive shall meet NFPA-90A requirements for flame spread and smoke generation.AMCA 210, ASHRAE 51: Airflow ARI 410: Coil Capacity – Hydronic ARI 210: Coil Capacity – DXANSI/UL – 1995: Safety Agency Listing of base or standard equipment is ETL, ETL file #491893 Material Specifications Standards:ASTM A525, A527: Sheet MetalASTM B68, B75, B88, B251: Copper Tubing per ASTM B209: AluminumMajor Components Standards:NEMA per UL/CSA: MotorsUL/CSA: WireUL/CSA: Electrical ASHRAE 52: Filters per UL, UL 181, UL 723 (25/50), ASTM E-84: Fiberglass Insulation ASTM B117:Paint perUL-1995: Electric Heater, factory installed assembly (future)UL-1996: Electric Heater, field-installed accessory (future)1.4SUBMITTALSConfirm product application requirements in sufficient detail to specify product as it is to be manufactured. Critical characteristics include:Belt Drive or Direct Drive or Family of ProductCFMExternal Static Pressure (ESP) include dirty filter factorElevation / AltitudeInlet and Outlet airflow configuration: HorizontalCooling: Chilled Water, % ethylene glycol mix, % propylene glycol mix, DX = R-22, or DX = R410AEntering Water Temp and GPMDX: Sat Evap Temp, Entering DB/WBHeating: Hot Water, % ethylene glycol mix, % propylene glycol mix / Steam / Heat Pump R-410A / Electric resistanceHeating: pre-heat or re-heat position (DX with re-heat requires customer supplied freeze protection; hydronic coils in reheat configuration may require customer supplied and installed freeze protection.)Filter: Basic Throw-away / Merv-levelSupply Voltage and phaseOther items, unique requirements or accessories:Single Point Electrical Connection: See controls option or Electric Heat Single Point (as available)HH Mixing Box (field installed, as available)Valve Package (field installed, as available)QUALITY ASSURANCECoil(s) shall be factory tested for leakage at minimum of 600 psig air pressure under water.Valve Package shall be factory tested to withstand 50 psi pressure degradation with no losses. 1.6DELIVERY, STORAGE, AND HANDLINGDelivery: Deliver materials to site in manufacturer's original, unopened containers and packaging, with labels clearly indicating manufacturer and material.Inspection: Inspect all items for transit damage or any indication of re-pack. Follow manufacturer directions for filing freight claims.Storage: Store materials in a dry, sheltered area, protected from damage and in accordance with manufacturer's instructions.Handling: Handle and lift products in accordance with manufacturer's instructions. Protect materials and finishes during handling and installation to prevent damage.PART 2PRODUCTS2.1MANUFACTURERBasis of design Magic Aire (United Electric Company) Air Handling Units, 501 Galveston Street, Wichita Falls, TX 76301. Phone (940) 397-2100. Web Site . Alternates are considered for approval if submitted in advance with complete ratings and accessory detail.2.2Direct Drive and Belt Drive Air Handlers / Fan Coils: General:Factory-assembled, horizontal return air, horizontal discharge air, draw-thru type air handler unit suitable for concealed or exposed indoor installation in two or four pipe configuration.Unit shall be completed per customer order with water, DX or steam coil(s); fan(s); motor; direct drive or belt drive (as available); double sloped IAQ drain pan; and filters. 0300355SPECIFIER NOTE: Confirm availability of all options for each construction element using current manufacturer catalog/software or contact Magic Aire for assistance. Delete options not selected.00SPECIFIER NOTE: Confirm availability of all options for each construction element using current manufacturer catalog/software or contact Magic Aire for assistance. Delete options not selected.Construction and Components:Construction: shall be galvannealed or galvanized steel, painted with baked on polyurethane based powder coating with textured finish passing minimum 500 hour salt spray test; gauges per schedule below.HH04 to HH25 (1 ton to 6 ton)Motor mount 16 ga.Blower Rails 18 ga.Cabinet19 ga.Drain pan (metal option)19 ga.Liner (double wall)22 ga.(Option) anti-microbial powder coating passing 750 hour salt spray test00SPECIFIER NOTE: Textured finish offers greater resilience to workplace incidents that would otherwise mar the finish. Texturing helps to maintain aesthetics of unit.00SPECIFIER NOTE: Textured finish offers greater resilience to workplace incidents that would otherwise mar the finish. Texturing helps to maintain aesthetics of unit.Insulation: Cabinet to be lined with insulation and steel inner liner. 082550SPECIFIER NOTE: per the manufacturer; Johns Manville, 717 17th St., Denver, CO 80202 (800) 654-, Exact-O-Kote? Equipment Liner is a black flexible fiber glass insulation with a durable black acrylic coating. The coating contains an EPA-registered immobilized antimicrobial agent which effectively resists the growth of bacteria and fungi as proven by tests in accordance with ASTM G21 and G22.00SPECIFIER NOTE: per the manufacturer; Johns Manville, 717 17th St., Denver, CO 80202 (800) 654-, Exact-O-Kote? Equipment Liner is a black flexible fiber glass insulation with a durable black acrylic coating. The coating contains an EPA-registered immobilized antimicrobial agent which effectively resists the growth of bacteria and fungi as proven by tests in accordance with ASTM G21 and G22. 2” double wall construction shall consist of 2” Exact-O- Kote? insulation with a minimum 22-gauge galvanized steel liner with no fiberglass insulation exposed to the air stream. Exact-O-Kote? IAQ insulation contains an EPA-registered immobilized antimicrobial agent tested in accordance with ASTM G21 and G22.Temperature Limit: 250oF (121oC)Fire Hazard Classification: 25/50 (per ASTM E 84 and UL 723 and CAN/ULC S102-M88). Meets NFPA 90A and 90B.Maximum Air Velocity: 5,000 fpm (1,500 mpm). Exact-O-Kote? is tested at two and one-half times (12,500 fpm) (3,800 mpm) the maximum recommended service velocity. It meets the requirements of UL 181.ASTM C 1071: Exact-O-Kote? has been tested and conforms to the physical properties and requirements of ASTM C 1071.Piping and Drain Pans:Piping penetrations through the cabinet will be isolated with rubber/plastic grommets or bushings.Drain pan will be serviceable from same end as Cooling Coil piping connections unless specified otherwise.Type 304 stainless steel drain-pan shall be double-sloped, treated externally with antimicrobial agent in polyester powder coating and .125” closed cell insulation on exposed outer surfaces. Inner surfaces shall be insulated or be in contact with lining insulation. Drain pan shall extend under the full length and width of the coil(s) with a single ?-in FPT connection for use with PVC ?-in MPTxslip adapter or ?-in MPT pipe. Duct Connections: Supply and return duct connections shall be flat surfaces to allow attachment of field-supplied and installed duct flanges or flanged ductwork.Fans: Units shall be equipped with:Direct Drive plenum fanConstruction: backward curved, galvanized steel, painted, statically and dynamically balanced with fixed hub, rubberized canvas inlet collar assembly and rubber-in-shear vibration isolators to fully isolate the fan/motor system from the cabinet. Access: provide removable access panels, both sides, with ?-turn or ?-turn fasteners or hinges (as available) to allow fan & motor service. (as available) Belt-drive fan system:double-width fan wheels shall have forward-curved blades and be statically and dynamically balanced. Provide ball bearing type bearings, permanently lubricated and sealed for life.Fan drive shall consist of variable-pitch motor pulley, fixed-pitch fan pulley and V-belt.Fans and scrolls shall be of galvanized steel.Provide removable access panels, both sides, with ?-turn fasteners or hinges (as available) for service access to fan/motor assembly.Coils: Unit shall be equipped with a standard capacity (3) or (4)-row CW/HW or DX coil for installation in a 2-pipe system. Additional coils shall be provided for installation in a 4-pipe system.Coils shall have a working pressure of 400 psig at 200 FAluminum fins bonded to the tubes by mechanical expansionProvide end plates and coil baffles of 18ga G90 galvanized steel with extruded holes mechanically bonded to tubes, standard.20ga SS304 stainless steel with extruded holes mechanically bonded to tubes, as available.Hydronic coils Manual air vent not provided due to sealed cabinet construction. Air removal is the responsibility of the installer.HH04 to HH20 shall have 3/8” o.d. copper tubesHH30 to HH40 (as available) shall have 1/2” o.d. copper tubesDirect Expansion coils 3/8” o.d. rifled copper tubes, suitable for R-22 or R-410A heat pump or cooling service. With thermal expansion valve, size selectable on high capacity option. Nominal size TXV only, on standard capacity coil.R-410A: 2, 3, 4 or 5-ton nominal TXV size: Balanced port, biflow with internal check valve, 1/8” equalizer line, 1/8” sensing bulb line and bulb, o.d. female sweat connections, non-bleed, externally adjustable. Sensing bulb to be field-located and installed. R-410A: 8, 12.5, 15 and 20-ton nominal TXV size: non-biflow, 1/8” equalizer line, 1/8” sensing bulb line, o.d. female sweat connections, non-bleed, externally adjustable (12.5T and 15T only) or fixed superheat set point (8T and 20T only). Sensing bulb to be field-located and installed. TXV brazed to o.d. male sweat refrigerant distributor, sized for number of circuits, nozzle and body size to match TXV. Distributor is complete with nozzle and retaining spring and 3/16” o.d. or ?” o.d. copper tube feeder lines. Feeder lines have belled ends at connection to 3/8” o.d. coil tube “hairpins”. Non-biflow TXV assemblies have side-port distributors and liquid side tee connection for field-installed accessory heat pump check valve kit. 114300790575SPECIFIER NOTE: When tubing is expanded into extruded end plate holes it adds rigidity to the entire coil structure thereby reducing the opportunity for vibration induced leaks.00SPECIFIER NOTE: When tubing is expanded into extruded end plate holes it adds rigidity to the entire coil structure thereby reducing the opportunity for vibration induced leaks.1143000Specifier note: Not all options below are available in all sizes. Confirm with manufacturer catalog/software. Delete options not selected.00Specifier note: Not all options below are available in all sizes. Confirm with manufacturer catalog/software. Delete options not selected.Operating Characteristics:A single-coil unit installed in a 2-pipe CW/HW system shall be capable of providing heating or cooling.A two-coil unit installed in a 4-pipe system shall be capable of providing sequenced heating and cooling as determined by the controls (controls provided by others).Coil Arrangement Offering: Coil configuration shall be:2 pipe, 4 pipe preheat, 4 pipe reheat, 12 row max including two coils00SPECIFIER NOTES: Reference Coils, subsection b. for details on bi-flow equipped and heat pump qualified selections.00SPECIFIER NOTES: Reference Coils, subsection b. for details on bi-flow equipped and heat pump qualified selections.Motor and Drive(s):General: Follow manufacturer guidelines for fan motor brake horsepower. Specifier to select from available motor options per current manufacturer catalog / software.Types: Direct Drive Plenum Fan motors shall be open slotted band (OPSB), or open drip-proof (ODP), single-speed, 60 Hz, 3600 rpm, suitable for continuous duty at 104-deg F (40 C), single-phase in 115, 208, 230, or 277 volts (60 Hz). Three-phase motors are available in 208, 230, or 460 volts (60 Hz) and are NEMA-Premium and rated for use with Variable Frequency Drive (VFD). Three phase motors in 575V (60Hz) – as available. Motors shall be ____ voltage,_____ cycle, ____phase, per available selections. Motor bearings will be permanently lubricated type.Variable Frequency Drive- to match motor and pre-programmed to protect motor from over-current and to allow field-supplied fan speed control signal via 0-10VDC input on the VFD. Controls Options:Exterior mounted potentiometer: potentiometer mounted to unit exterior can be relocated using factory-provided cover plate to cover the opening. Potentiometer allows manual adjustment of fan/motor speed during operation. Remote mounted VFD keypad: VFD detachable keypad is mounted to unit exterior and can be relocated using factory-provided cover plate to cover the opening. VFD keypad allows detailed operation of VFD. Constant CFM Control: pressure transducer measures DP across fan throat; VFD PID loop controls fan speed to maintain constant CFM as filters load; allows setting of airflow directly through VFD keypad mounted on the unit exterior. VFD keypad allows detailed operation of VFD, and keypad can be relocated in the field. Units to be provided with 24v transformer and terminal strip mounted on internal electrical box. Drive System:Direct Drive Plenum Fan - Variable Frequency Drive per section “Motors”. Filters: Filter selections by customer per manufacturer catalog / software:228600165735SPECIFIER NOTES: Delete option c if not selected.00SPECIFIER NOTES: Delete option c if not selected.2” pleated filter(s), MERV-8, shall be installed as indicated on the equipment schedule.4” pleated filter(s), MERV-13, shall be installed as indicated on the equipment schedule. (Optional) 12” pleated filter(s), HEPA (MERV-16), with metal frame material shall be installed as indicated on the equipment schedule; composite wood frame material not acceptable. This is the final filter, downstream of the fan and coils. Optional Accessories:-19050110490SPECIFIER NOTES: Delete accessories not selected.00SPECIFIER NOTES: Delete accessories not selected.Mixing Box: (as available) Field-installed Mixing Box shall include low leak damper assemblies constructed of steel channel frames with 18 gauge galvanized steel blades, die formed stiffeners with stops. Vinyl blade seals or equivalent to reduce leakage shall be standard. All hardware shall be zinc plated with brass pivot points and bronze oilite bearings, zinc-plated hardware, non-binding and quiet brass pivot points and bronze bearings, vinyl blade-edge seals to minimize leakage. Shafts shall be corrosion resistant steel. Mixing box (as available) shall be fully insulated with closed cell, foil face insulation or 2” double wall construction. Optional - Provide actuator and fully modulating economizer control kit (field installed accessory).Electric Heaters (as available):Shall be constructed of high-grade resistance wire supported by ceramic insulators on plated steel bracketsHigh limit thermal cut-outs and non-adjustable air proving switch shall protect the heat elements in the event of an air failure.Electric heaters are pre-wired and factory or field-installed for single-point electrical connection. Discharge Plenum (as available):Provide discharge plenum, painted with baked on polyurethane based powder coating, textured finish, double wall with 2-in thick Exactocote fiberglass insulation. Plenum has plain sides, ready to be field-cut for supply air takeoffs. Takeoffs are sealed in the field. Optional discharge plenum (as available) has bell mouth takeoffs with dampers for convenient connection of discharge ductwork. END OF SECTION ................
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