York D2CE Ductwork, Fixed Outdoor Air Intake Damper, Fixed Outdoor Air Damper, Condensate Drain

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DUCTWORK

530.18-N11Y

DUCTWORK

Ductwork should be designed and sized according to the methods in Manual Q of the Air Conditioning Contractors of America (ACCA).

A closed return duct system shall be used. This shall not preclude use of economizers or outdoor fresh air intake. The supply and return air duct connections at the unit should be made with flexible joints to minimize noise.

The supply and return air duct systems should be designed for the CFM and static requirements of the job. They should NOT be sized to match the dimensions of the duct connections on the unit.

CAUTION: When fastening ductwork to side duct flanges on unit, insert screws through duct flanges only. DO NOT insert screws through casing.

Outdoor ductwork must be insulated and waterproofed.

Refer to the Dimensions and Clearances figure for information concerning side and bottom supply and return air duct openings.

It is recommended that, in Canada, the outlet duct on gas heating units be provided with a removable access panel. It is recommended that this opening be accessible when the unit is installed in service, and of a size such that smoke or reflected light may be observed inside the casing to indicate the presence of leaks in the heat exchanger. The cover should be attached in a manner adequate to prevent leakage.

FIXED OUTDOOR AIR INTAKE DAMPER

This damper is shipped inside the return air compartment on units that are not provided with an economizer or a motorized damper option. It is completely assembled and ready for installation. A damper baffle inside of the hood is adjustable to provide variable amounts of outdoor air intake.

Gasketing and mounting screws are provided in a parts bag attached to the hood assembly. Apply gasketing to the three flange surfaces on the hood prior to installing the hood. Extend gasketing 1/4" beyond the top and bottom of the two side flanges to insure adequate sealing.

Adjusting the damper to the desired air flow may be done before mounting the hood into position or (after installation) by removing the front hood panel or the screen on the bottom of the hood. Damper baffle in position 1 will allow approximately 10% recirculated air flow, position 2 approximately 15% and, to allow approximately 25%, remove the damper baffle.

On units with bottom return air applications, install the damper assembly over the opening in the side return air access panel. Remove and discard the opening cover and the covering over the hood mounting holes (used for shipping) before installing. Secure with the screws provided.

On units with side return air applications, install the damper assembly on the return air ductwork as close to the unit as possible. Cut an opening 16" high by 18" wide in the ductwork to accommodate the damper. Using the holes in the hood flanges as a template, drill 9/64" dia. (#26 drill) holes into the ductwork and secure with the screws provided.

CAUTION: If outdoor air intake will not be required on units with bottom return air applications, the damper assembly should still be mounted on the side return air access panel, per the instructions above, to insure moisture is not drawn into the unit during operation. The covering over the mounting holes only need be removed. Do not remove the opening cover.

FIG. 3 - FIXED OUTDOOR AIR DAMPER

CONDENSATE DRAIN

Plumbing must conform to local codes. Use a sealing compound on male pipe threads. Install a condensate drain line from the 1" NPT female connection on the unit to an open drain.

FIG. 4 - RECOMMENDED DRAIN PIPING

NOTE: The condensate drain line MUST be trapped to provide proper drainage.

COMPRESSORS

Units are shipped with compressor mountings factory-adjusted and ready for operation.

CAUTION: Do Not loosen compressor mounting bolts.

FILTERS

2" filters are supplied with each unit.Filters must always be installed ahead of the evaporator coil and must be kept clean or replaced with same size and type. Dirty filters will reduce the capacity of the unit and will result in frosted coils or safety shutdown.Minimum filter area and required sizes are shown in the Physical Data Table.

SERVICE ACCESS

Access to all serviceable components is provided by the following removable panels:

•Compressor compartment

•Electric Heat compartment - DCE models

•Gas Heat compartment (Two panels) - DCG models

•Side Supply & Return Air compartments (Two panels)

•Blower compartment (Three panels)

•Main control box

•Filter compartment

•Outdoor Air compartment (Two panels)

Refer to the Dimensions and Clearances figure for location of these access panels.

CAUTION: Make sure that all screws and panel latches are replaced and properly positioned on the unit to maintain an air-tight seal.

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Unitary Products Group

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Contents INSTALLATION INSTRUCTION SAFETY CONSIDERATIONSFOR YOUR SAFETY If you smell gas 1.Open windows FOR YOUR SAFETYTABLE OF CONTENTS INSTALLATIONMAINTENANCE & TROUBLESHOOTING OPERATIONINSTALLATION LIMITATIONSTABLE 1 - UNIT APPLICATION DATA LOCATIONSERVICE ACCESS DUCTWORKFIXED OUTDOOR AIR INTAKE DAMPER FIG. 3 - FIXED OUTDOOR AIR DAMPERCONTROL WIRE SIZES FIG. 5 - TYPICAL FIELD WIRINGPOWER AND CONTROL WIRING THERMOSTATOPTIONAL ELECTRIC HEATERS DCE Models TABLE 2 - GAS HEAT APPLICATION DATAEXTERNAL SHUT-OFF FIG. 7 - BOTTOM SUPPLY CONNECTIONL.P. UNITS, TANKS AND PIPING DCG Models FIG. 8 - VENT AND COMBUSTION AIR HOODS VENT AND COMBUSTION AIR HOODS DCG ModelsOPTIONAL ECONOMIZER/MOTORIZED DAMPER RAIN HOOD 530.18-N11Y FIG. 9 - ENTHALPY SETPOINT ADJUSTMENTUnitary Products Group TABLE 5 - ELECTRICAL DATA - BASIC UNITS TABLE 4 - PHYSICAL DATATABLE 6 - ELECTRICAL DATA - UNITS w/ELECTRIC HEAT UTILITIES ENTRY DATA FIG. 10 - DIMENSIONS & CLEARANCES - DCE & DCGCont’d ACCESSORY SIDE SUPPLY AND RETURN AIR OPENINGS REAR VIEWDETAIL “X” DETAIL “Y” UNIT WITH RAIN HOODS4 POINT LOADS 6 POINT LOADSFIG. 11- FOUR AND SIX POINT LOADS TABLE 7 - FOUR AND SIX POINT LOADSTABLE 10 - STATIC RESISTANCES TABLE 11 - POWER EXHAUST PERFORMANCETABLE 12 - BLOWER MOTOR AND DRIVE DATA SAFETY CONTROLS OPERATIONCOOLING SYSTEM PRELIMINARY OPERATION COOLINGTABLE 9 - HEAT ANTICIPATOR SETTING HEAT ANTICIPATOR SETPOINTSGAS HEATING SEQUENCE OF OPERATION FIG. 12 - GAS VALVE PIPINGTABLE 10 - LIMIT CONTROL SETTING MANIFOLD GAS PRESSURE ADJUSTMENTSTART-UP PRE-STARTCHECK LISTFIG. 15 - PROPER FLAME ADJUSTMENT BURNER AIR SHUTTER ADJUSTMENTFIG.17 - BELT ADJUSTMENT PILOT CHECKOUTCHECKING GAS INPUT ADJUSTMENT OF TEMPERATURE RISETABLE 11 - GAS RATE - CUBIC FEET PER HOUR NORMAL MAINTENANCE MAINTENANCEFIG. 19 - TYPICAL FLUE BAFFLE INSTALLATION TROUBLESHOOTING TROUBLESHOOTING - Cont’d REPLACEMENT PARTS Code SBY Unitary Products Group530.18-N11Y
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D2CG300, 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.
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