York B1HP024 THRU 048 Technical Manual

York B1HP024 THRU 048 Technical Manual Manual pdf 25 page image

036-21528-001-A-0303Unitary Products Group 25MECHANICAL SPECIFICATIONSGENERAL DESCRIPTIONUnits shall be factory-assembled, single packaged,Heat Pumps, designed for outdoor mounted installa-tion. Units shall have minimum SEER ratings of 13.0.They shall have built in, equal size, field convertibleduct connections for down discharge supply/return orhorizontal discharge supply/return.The units shall be factory wired, piped, charged with R-22 refrigerant and factory tested prior to shipment. Allunit wiring shall be both numbered and color coded.All units shall be manufactured in a facility certified toISO 9001 standards, and the cooling performance shallbe rated in accordance with DOE and ARI test proce-dures. Units shall be classified to UL 1995/CAN/CSANo. 236-M90 conditions.UNIT CABINET1. Unit cabinet shall be constructed of G90 galva-nized steel, with exterior surfaces coated with anon-chalking, powered paint finish, certified at 750hours salt spray test per ASTM-B117 standards.2. The unit top shall be a single piece ìWater Shedîdesign, with drip edges and no-seam corners toprovide optimum water integrity.3. Unit shall have a rigidly mounted condenser coilguard to provide protection from objects and per-sonnel after installation.4. Indoor blower section shall be insulated with up to3/4î thick, aluminum, foil faced insulation, fastenedto prevent insulation from entering the air stream.5. Cabinet panels shall be ìlargeî size, easily remov-able for servicing and maintenance, with built-in lifthandles.6. Unit shall be built on a formed, ìSuper-Structureîdesign base pan, with embossments at criticalpoints to add strength, rigidity and aid in minimizingsound.7. Full perimeter base rails shall be provided toassure reliable transit of equipment, overhead rig-ging, fork truck access and proper sealing on roofcurb applications. Base rails shall be removable,when required, to lower unit height.8. Filters shall be furnished and be accessiblethrough a removable access door, sealed air tight.(Single phase models - accessory kit available.Three phase models - standard from factory.)9. Units vertical discharge and return duct configura-tion shall be designed to fit between standard 24îO.C. beams without modification to building struc-ture, duct work and base unit.10. Condensate pan shall be internally sloped andconform to ASHARE 62-89 self-draining standards,with " NPTI copper, ridged mount connection.INDOOR (SUPPLY) FAN ASSEMBLY1. Fan shall be direct drive, constant CFM, ECMdesign. Job site selected (BHP) brake horse powershall not exceed the motors nameplate horsepower rating.2. Fan wheel shall be double-inlet type with forward-curved blades, dynamically balanced to operatesmoothly throughout the entire range of operation.Airflow design shall be constant air volume.3. Bearings shall be sealed and permanently lubri-cated for longer life and no maintenance.4. Fan assembly shall be ìSlip Trackî (slide-out)design for easy removal and cleaning.OUTDOOR FAN ASSEMBLY1. The outdoor fan shall be of the direct-driven propel-ler type, discharge air vertically, have aluminumblades riveted to corrosion resistant steel spiderbracket and shall be statically balanced for smoothoperation.2. The outdoor fan motor shall be totally enclosedwith permanently lubricated bearings and internallyprotected against overload conditions.REFRIGERANT COMPONENTS1. Compressors:A. Shall be fully hermetic type, direct drive, internallyprotected with internal high-pressure relief and overtemperature protection. The hermetic motor shall besuction gas cooled and have a voltage range of + or- 10% of the unit nameplate voltage.

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