036-21359-001-B-0302

MECHANICAL SPECIFICATIONS

GENERAL DESCRIPTION

Units shall be factory-assembled, single packaged, (DCG Electric Cooling/Gas Heat, DCE Electric Cooling/ Optional Electric Heat), designed for outdoor mounted installation. Units shall have minimum EER ratings of

8.5.They shall have built in field convertible duct con- nections for down discharge supply/return or horizontal discharge supply/return, and be available with factory installed options or field installed accessories.

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. Enclosed in each unit shall be a factory test log sheet consisting of the unit tested pressures, temperatures and amps, as tested prior to shipment.

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 ETL & CGA listed, classified to ANSIZ21.47 standards, 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.Indoor blower section shall be insulated with up to 1" thick insulation, coated on the air side. Alumi- num foil faced insulation shall be used in the fur- nace compartment and be fastened with ridged fasteners to prevent insulation from entering the air stream.

3.Cabinet panels shall be “large” size, easily remov- able for servicing and maintenance.

4.Full perimeter base rails shall be provided to assure reliable transit of equipment, overhead rig- ging and proper sealing on roof curb applications.

5.Disposable 2" filters shall be furnished and be accessible through a removable access door, sealed air tight. Units filter track shall be designed to accommodate either 1" or 2" filters.

6.Fan performance measuring ports shall be pro- vided on the outside of the cabinet to allow accu- rate air measurements of evaporator fan performance without removing panels or creating air by-pass of the coils.

7.Condensate pan shall be internally sloped and conform to ASHARE 62-89 self-draining standards. Condensate connection shall be a minimum of 1" I.D. female and be a ridged mount connection.

8.Unit shall incorporate a fixed outdoor air damper with an outdoor air intake opening covered with a bird screen and a rain hood painted to match the exterior of the unit.

INDOOR (EVAPORATOR) FAN ASSEMBLY

1.Fan shall be a belt drive assembly and include an adjustable-pitch motor pulley. Job site selected (B.H.P.) brake horse power shall not exceed the motors nameplate horse power rating, plus the ser- vice factor. Units shall be designed not to operate above service factor.

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.

OUTDOOR (CONDENSER) FAN ASSEMBLY

1.The outdoor fans shall be of the direct-driven pro- peller type, discharge air vertically, have blades riveted to corrosion resistant steel spider brackets and shall be dynamically balanced for smooth operation.

2.The 2 outdoor fan motors shall be totally enclosed with permanently lubricated bearings, internally protected against overload conditions and staged independently.

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.

B.Shall have internal spring isolation and sound muf- fling to minimize vibration and noise, and be exter- nally isolated on a dedicated, independent mounting.

2Coils:

A.Evaporator and condenser coils shall have alumi- num plate fins mechanically bonded to seamless internally-enhanced copper tubes with all joints brazed. Special Phenolic coating shall be available as a factory option.

Unitary Products Group

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York D2CG, D2CE manual Mechanical Specifications

D2CG, D2CE specifications

The York D2CE and D2CG series represent cutting-edge advancements in energy-efficient chiller technology, specifically designed to optimize performance in a variety of commercial and industrial applications. These chillers are known for their ability to deliver reliable cooling while minimizing energy consumption, making them a preferred choice for businesses aiming to reduce their carbon footprint and operational costs.

One of the standout features of the York D2CE and D2CG chillers is their utilization of advanced scroll compressor technology. This technology not only enhances the reliability of the systems but also significantly improves energy efficiency, allowing for lower operational costs. The chillers are built to provide high efficiency across a diverse range of operating conditions, ensuring consistent performance during peak loads.

The D2CE series, designed primarily for air-cooled applications, benefits from a compact and modular design, allowing for flexible installation in tight spaces. Additionally, its quiet operation makes it suitable for use in noise-sensitive environments, such as healthcare facilities and educational institutions. The model is equipped with microprocessor controls that facilitate precise temperature regulation and system diagnostics, ensuring optimal operation.

Conversely, the D2CG series focuses on water-cooled applications, featuring robust construction that accommodates higher cooling capacities. This model also includes advanced heat exchanger technology, which maximizes heat transfer efficiency. The D2CG’s intelligent controls not only help in energy management but also provide remote monitoring capabilities, allowing facility managers to analyze performance and troubleshoot issues from anywhere.

Both models utilize environmentally friendly refrigerants, aligning with global regulations and promoting sustainability. Enhanced filtration options are available, enabling the units to maintain high indoor air quality by minimizing dust and other pollutants.

In addition to their energy-saving attributes, the York D2CE and D2CG chillers are designed for ease of maintenance, with accessible components and modular parts that simplify service procedures. This, coupled with their durable construction, leads to greater longevity and reliability in operation.

In summary, the York D2CE and D2CG chillers are leading examples of modern HVAC engineering, combining efficiency, flexibility, and sustainability. Their innovative technologies and thoughtful design make them an excellent addition to any facility looking to enhance its cooling systems while adhering to environmental standards.