York D2CE, D2CG manual GAS Heating Section DCG Models, Electric Heating DCE Models

Page 16

036-21359-001-B-0302

B.Evaporator and Condenser coils shall be of the direct expansion, draw-thru, design.

C.Condenser coils shall be protected with factory installed coil guards

3.Refrigerant Circuit and Refrigerant Safety Compo- nents shall include:

A.Balance-port thermostatic expansion valve with independent circuit feed system.

B.Filter drier/strainer to eliminate any moisture or for- eign matter.

C.Accessible service gage connections on both suc- tion and discharge lines to charge, evacuate, and measure refrigerant pressure during any necessary servicing or troubleshooting, without losing charge.

D.The refrigeration system shall provide at least 15 °F of sub-cooling at design conditions.

E.All Models shall have two independent circuits..

4.Unit Controls:

A.Unit shall be complete with self contained low-volt- age control circuit protected by a resetable circuit breaker on the 24 volt transformer side.

B.Unit shall incorporate a lock-out circuit which pro- vides reset capability at the space thermostat or base unit, should any of the following standard safety devices trip and shut off compressor:

1.Loss-of-charge/Low-pressure switch.

2.High-pressure switch.

3.Freeze-protection thermostat, evaporator coil.

If any of the above safety devices trip, an LED (light- emitting diode) indicator shall illuminate.

C.Unit shall incorporate “AUTO RESET” compressor over temperature, over current protection.

D.Unit shall operate with conventional thermostat designs and have a low voltage terminal strip for easy hook-up.

GAS HEATING SECTION (DCG MODELS)

1.Shall be designed with induced draft combustion with post purge logic and energy saving direct spark ignition, redundant main gas valve. Ventor wheel shall be constructed of stainless steel for corrosion resistance.

2.The heat exchanger shall be of the tubular type, constructed of T1-40 aluminized steel for corrosion

resistance and allowing minimum mixed air enter- ing temperature of 25 °F.

3.Burners shall be of the in-shot type, constructed of aluminum coated steel and contain air mixture adjustments.

4.All gas piping shall enter the unit cabinet at a single location through either the side or curb, without any field modifications.

5.An integrated control board shall provide timed control of evaporator fan functioning and burner ignition.

6.Heating section shall be provided with the following minimum protection:

A.Primary and auxiliary high-temperature limit switches.

B.Induced draft motor speed sensor.

C.Flame roll out switch (manual reset).

D.Flame proving controls.

7 Unit shall have two independent stages of capacity.

ELECTRIC HEATING (DCE MODELS)

1.Nickel chromium electric heating elements shall be provided as required by the application with 1 or 2 stage control, as required, from 13.5 KW to 72 KW capacity.

2.The heating section shall have a primary limit con- trol(s) and automatic reset to prevent the heating element system from operating at an excessive temperature.

3.Units with Electric Heating shall be wired for a sin- gle point power supply with branch circuit fusing (where required).

UNIT OPERATING CHARACTERISTICS

1.Unit shall be capable of starting and running at 125 °F outdoor temperature, exceeding maximum load criteria of ARI Standard 210/240.

2.The compressor, with standard controls, shall be capable of operation down to 25 °F outdoor tem- perature. Accessory low ambient kit shall be avail- able for operation to 0 °F.

3.Unit shall be provided with fan time delay to pre- vent cold air delivery before heat exchanger warms up. (Gas heat only)

16

Unitary Products Group

Page 15 Page 17
Image 16
Page 15 Page 17
Contents Technical Guide DescriptionFACTORY-INSTALLED Options Power ExhaustEconomizers Motorized Outdoor AIR Intake DamperFIELD-INSTALLED Accessories Coil Guard KIT Capacity Ratings ARICooling with GAS Heat GAS Heat RatingsMBH CFMAccessory Drive Factory SettingBlower Pulley Speed Turns ESP Output InputDCE/DCG/DCV Models Model Size MBHEvaporator Blower Coil Condenser FAN Condenser Coil CompressorAdjustablemotorpulley Fixed Blower PUL LEY OUTSize Frame Desig SideM P E R L T A N S F O R M EN E V O L T a G E R M I N a LView Utilities Entry DataNpdo WE EX RH RA Auhisonto D S X E D T DA OI RO R I N Thaokoe D300 130 418 438 533 658 603 510 O N TBase Rail 036-21359-001-B-0302 Mechanical Specifications GAS Heating Section DCG Models Unit Operating CharacteristicsElectric Heating DCE Models Electrical Requirements Other PRE-ENGINEERED Accessories AVAIL- AbleStandard Limited Warranties Other Factory Installed Options 036-21359-001-B-0302 036-21359-001-B-0302 036-21359-001-B-0302 036-21359-001-B-0302 036-21359-001-B-0302 036-21359-001-B-0302
Related manuals
Manual 24 pages 32.97 Kb

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.
Top Page Image Contents