Magic Aire 2.i) Standard – double-sloped polymer with High Efficiency Direct Drive Air Handling PVC male connections. Unit 2.ii) Optional – Double sloped 20ga 304 HVAC Guide Specifications stainless steel. Drain pan shall have Size Range: 400 to 2000 Nominal CFM average 3mil thick antimicrobial coating Model HCA that provides 750hr salt spray rating per ASTM B117. Part 1 — General B. Fans: 1.01 SYSTEM DESCRIPTION Direct-driven, double-width fan wheel with forward Horizontal, Direct Drive, 2-pipe or 4-pipe (or electric curved blades, statically and dynamically balanced. heat as available), room fan coil unit with painted finish The housing shall be constructed of heavy gauge cabinet for exposed installation or ducting. galvanized steel with die-formed inlet cones. Fan 1.02 QUALITY ASSURANCE wheels shall be constructed of galvanized steel. Unit shall be tested in accordance with ARI Standard C. Coils: 440 and ETL listed to US and Canadian safety 1. Standard base unit shall be equipped with a 4 standards. Each coil shall be factory tested for leakage or 6-row CW, or 3 or 4-row DX coil, for installation in a at 600 psig air pressure with coil submerged in water. 2 or 4-pipe system. Insulation and adhesive shall meet NFPA-90A 2. Hot water heating coils in a 4 pipe system requirements for flame spread and smoke generation. shall be 1-row or 2-row, slab style perpendicular to All equipment wiring shall comply with NEC airflow, factory installed. Coil fin spacing shall be 10 requirements. or 12 fins per inch (FPI). Tube diameter shall be 3/8” 1.03 DELIVERY, STORAGE AND HANDLING OD or ½” OD. Each unit shall be individually packaged from point of manufacture. Unit shall be handled and stored in 3. Steam coils are tube-in-tube steam distributing accordance with the manufacturer’s instructions. type coils with copper tubes and aluminum fins, single Part 2 — Product row, with copper or red brass headers and 2.01 EQUIPMENT connections; vent/vacuum breaker connection General: provided, vacuum breaker assembly/valve is field- Factory-assembled, horizontal, draw-thru type fan coil provided and installed. Fins are minimum 0.0045-in for exposed or concealed installations, ducted or free and fin spacing is 8FPI (standard capacity option) or discharge with plenum. Unit shall be complete with 12 FPI (high capacity option). Coil operating pressure water or DX cooling coil, water heating coil, fan(s), is 6psig max steam pressure. motor(s), drain pan, and all required wiring, piping, 4. Factory-installed electric resistance heater controls and special features. shall be 1.0 to 21.0kW, depending on unit size and A. Base Unit: voltage, mounted on unit discharge opening. Heaters shall include manual reset and automatic reset high 1. Units shall be fabricated of galvanized or limit switches, heat contactor, airflow proving switch, galvannealed steel, 19gauge, exterior panels with fan contactor and fusing as required. 19gauge interior panels. Internal insulation is 1” fiberglass with1.5 pound density, providing effective 5. Cooling coil options include a 3-row or 4-row acoustical and thermal control and fire safety. DX coil with TXV or without TXV (R22 or R-410A). Cabinet shall include removable blower and filter 6. All coils shall have copper tubes and access panels on both sides, return duct flange, filter aluminum fins. Coil fins are mechanically bonded to rack and 2-in. fiberglass throwaway filter or 2-in. tubes. The copper tubes comply with ASTM B-75. pleated MERV 8 filter or 4-in. pleated MERV 13 filter. The fin thickness is 0.0045-in. All coils are tested with Filter rack is field-adjustable for either 2-in. or 4-in. air under water. filter depth. Cabinet exterior has a baked on D. Controls and Safeties: polyester powder-coated finish for corrosion and 1. Fan Controls: Unit shall be furnished with scratch resistance while providing an enhanced 24V fan controls to allow control by field- appearance. Painted panels shall pass 500 hour salt provided and installed 24V thermostat. spray test as described in ASTM B-117. Optional: Options include: coated inner liner panels have average 3mil thick 1.i) ECM-Premium motor controls: 4 user- antimicrobial coating that provides 750hr salt spray selectable operating speeds, each rating per ASTM B117. adjustable with on-board potentiometer; 2. The drain pan shall extend the entire length will allow adjustment during fan operation and width of the coil, with primary and auxiliary with blower doors closed connections that are ¾” FPT.

HCA GUIDE SPEC 1.0 9/15/2017 1.ii) ECM-Premium motor controls: Mixing box shall be fully insulated with 1-in. variable speed driven by customer- thick, 1.5-lbs/ft3, Exact-O-Kote® IAQ provided 0-10VDC fan signal insulation containing an EPA-registered 2. Optional factory-wired selections: immobilized antimicrobial agent tested in accordance with ASTM G21 and G22 . Integral door disconnect switch 2.i) Optional – economizer control kit including 2.ii) Fan current switch (dry contacts) Belimo ® Zip econ controller and damper 2.iii) Condensate overflow switch actuator, suitable for field mounting for fully- modulating control, compliant with California E. Operating Characteristics: Title 24 requirements. 1. A unit with single hydronic coil installed in a 2- pipe system shall be capable of providing heating or cooling as determined by the operating mode of the central water supply system and as determined by field-provided and installed valves and controls. 2. A unit with two hydronic coils installed in a 4- pipe system shall be capable of providing heating and cooling, controlled as determined by field-provided and installed valves and controls. 3. A unit with single DX coil installed in a standard split system shall be capable of providing cooling when field-supplied and installed condensing unit is in cooling mode. Also capable of heating when heat pump condensing unit is operating in heating mode. 4. In all arrangements, the temperature controls are field-provided and installed and can interface with the unit per section “Controls and Safeties.” F. Electrical Requirements: The unit power supply shall be 60 Hz, with standard construction 115V/1-phase. Other factory options are 208/240V/1-phase or 277V/1-phase. G. Motor(s): Fan motors are ECM-Premium, electrically commutated motor (ECM), up to 40% more efficient than permanent split-capacitor type induction motors, with control options that allow variable speed or on/off fan control. H. Field Installed Accessories: 1. Horizontal Return Plenum – single wall return plenum, 4” deep with expanded metal return grille; uninsulated, 19ga galvanized steel frame, frame and expanded metal grille exterior has a baked on polyester powder- coated finish for corrosion and scratch resistance while providing an enhanced appearance. Painted panels shall pass 500 hour salt spray test as described in ASTM B- 117. 2. Mixing Box: Return air and outside air damper assemblies constructed of steel channel frames with 19 gauge galvanized steel blades, die formed stiffeners with stops, vinyl (or equivalent) blade-edge seals to minimize leakage, zinc plated hardware, quiet and non- binding brass pivot points, bronze oilite bearings and corrosion-resistant steel shafts.

HCA GUIDE SPEC 1.0 9/15/2017