York B1HP024 THRU 048 manual Mechanical Specifications, General Description, Unit Cabinet

036-21528-001-A-0303

MECHANICAL SPECIFICATIONS

GENERAL DESCRIPTION

Units 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 convertible duct connections for down discharge supply/return or horizontal discharge supply/return.

The units shall be factory wired, piped, charged with R- 22 refrigerant and factory tested prior to shipment. All unit wiring shall be both numbered and color coded.

All units shall be manufactured in a facility certified to ISO 9001 standards, and the cooling performance shall be rated in accordance with DOE and ARI test proce- dures. Units shall be classified to UL 1995/CAN/CSA No. 236-M90 conditions.

UNIT CABINET

1.Unit cabinet shall be constructed of G90 galva- nized steel, with exterior surfaces coated with a non-chalking, powered paint finish, certified at 750 hours salt spray test per ASTM-B117 standards.

2.The unit top shall be a single piece ìWater Shedî design, with drip edges and no-seam corners to provide optimum water integrity.

3.Unit shall have a rigidly mounted condenser coil guard to provide protection from objects and per- sonnel after installation.

4.Indoor blower section shall be insulated with up to 3/4î thick, aluminum, foil faced insulation, fastened to prevent insulation from entering the air stream.

5.Cabinet panels shall be ìlargeî size, easily remov- able for servicing and maintenance, with built-in lift handles.

6.Unit shall be built on a formed, ìSuper-Structureî design base pan, with embossments at critical points to add strength, rigidity and aid in minimizing sound.

7.Full perimeter base rails shall be provided to assure reliable transit of equipment, overhead rig- ging, fork truck access and proper sealing on roof curb applications. Base rails shall be removable, when required, to lower unit height.

8.Filters shall be furnished and be accessible through 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 24î O.C. beams without modification to building struc- ture, duct work and base unit.

10.Condensate pan shall be internally sloped and conform to ASHARE 62-89 self-draining standards, with " NPTI copper, ridged mount connection.

INDOOR (SUPPLY) FAN ASSEMBLY

1.Fan shall be direct drive, constant CFM, ECM design. Job site selected (BHP) brake horse power shall not exceed the motors nameplate horse power rating.

2.Fan wheel shall be double-inlet type with forward- curved blades, dynamically balanced to operate smoothly 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 ASSEMBLY

1.The outdoor fan shall be of the direct-driven propel- ler type, discharge air vertically, have aluminum blades riveted to corrosion resistant steel spider bracket and shall be statically balanced for smooth operation.

2.The outdoor fan motor shall be totally enclosed with permanently lubricated bearings and internally protected against overload conditions.

REFRIGERANT COMPONENTS

1.Compressors:

A.Shall be fully hermetic type, direct drive, internally protected with internal high-pressure relief and over temperature protection. The hermetic motor shall be suction gas cooled and have a voltage range of + or - 10% of the unit nameplate voltage.

Unitary Products Group 25