York WR240 Unit Operating Characteristics, Electrical Requirements, Standard Limited Warranties

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262292-YTG-B-0107

UNIT OPERATING CHARACTERISTICS

Unit shall be capable of starting and running at 125° F outdoor temperature, exceeding maximum load criteria of ARI Standard 340/360. The compressor, with standard controls, shall be capable of operation down to 25° F outdoor temperature. Accessory low ambient kit shall be available for operation to 0° F. Unit shall be provided with fan time delay to prevent cold air delivery before heat exchanger warms up (Gas heat only).

ELECTRICAL REQUIREMENTS

All unit power wiring shall enter unit cabinet at a single factory provided location and be capable of side or bottom entry, to minimize roof penetrations and avoid unit field modifications. Separate side and bottom openings shall be provided for the control wiring.

STANDARD LIMITED WARRANTIES

Compressor 5 Years

Heat Exchanger 10 Years

Electric Heat Element 5 Years

Other Parts 1 Year

OPTIONAL OUTDOOR AIR (Shall be made available by either/or):

ELECTRONIC ENTHALPY AUTOMATIC ECONOMIZER

-Outdoor and return air dampers that are interlocked and positioned by a fully-modulating, spring-return damper actuator. The maximum leakage rate for the outdoor air intake dampers shall not exceed 2% when dampers are fully closed and operating against a pressure differential of 0.5 IWG. A unit-mounted potentiometer shall be provided to adjust the outdoor and return air damper assembly to take in CFM of outdoor air to meet the minimum ventilation requirement of the conditioned space during normal operation. During economizer operation, a mixed-air temperature control shall modulate the outdoor and return air damper assembly to prevent the supply air temperature from dropping below 55°F. Changeover from compressor to economizer operation shall be provided by an integral electronic enthalpy control that feeds input into the basic module. The outdoor intake opening shall be covered with a rain hood that matches the exterior of the unit. Water eliminator/filters shall be provided. Simultaneous economizer/compressor operation is also possible. Dampers shall fully close on power loss.

MOTORIZED OUTDOOR AIR DAMPERS - Outdoor and return air dampers that are interlocked and positioned by a 2-position,spring-return damper actuator. The maximum leakage rate for the outdoor air intake dampers shall not exceed 2% when dampers are fully closed and operating against a pressure differential of 0.5 IWG. A unit-mounted potentiometer shall be provided to adjust the outdoor and return air damper assembly to take in the design CFM of outdoor air to meet the ventilation requirements of the conditioned space during normal operation. Whenever the indoor fan motor is energized, the dampers open up to one of two pre-selected positions

-regardless of the outdoor air enthalpy. Dampers return to

the fully closed position when the indoor fan motor is de- energized. Dampers shall fully close on power loss.

OTHER PRE-ENGINEERED ACCESSORIES AVAILABLE

ROOF CURB - 14" high, full perimeter curb with wood nailer (shipped knocked-down).

100% BAROMETRIC RELIEF DAMPER - Contains a rain hood, air inlet screen, exhaust damper and mounting hardware. Used to relieve internal air pressure through the unit.

PROPANE CONVERSION KIT - Contains new orifices and gas valve parts to convert from natural to L.P. gas. One per unit required.

HIGH ALTITUDE - NATURAL GAS - Contains orifices required for applications between 2000 and 6000 feet altitude.

HIGH ALTITUDE - PROPANE GAS - Contains orifices required for applications between 2000 and 6000 feet altitude. Must be used with propane conversion kit.

BURGLAR BARS - Designed to work with above roof curbs, depending on unit model. Fits duct openings of curb supply and return air openings.

SIDE DUCT FLANGE - Supply and return air duct flanges for side duct applications. Do not use on units with power exhaust.

HIGH SPEED DRIVE - Includes blower pulley and belt for higher CFM and/or static pressure requirements.

WOOD SKID - Allows unit to be handled with 90" forks.

ECONOMIZER/MOTORIZED DAMPER RAIN HOOD (WRN/E/C30 only) - Contains all hood panels and the hardware for assembling.

ANTI-RECYCLE TIMER - Assures 5-minute off time between compressor cycles.

LOW AMBIENT KIT - Provides unit cooling operation down to 0°F.

COIL GUARD KIT - Guard for cooling coil.

OTHER FACTORY INSTALLED OPTIONS

POWER EXHAUST OPTION - To work in conjunction with economizers.

STAINLESS STEEL HEAT EXCHANGER

STAINLESS STEEL DRAIN PAN

TECHNICOAT PHENOLIC COATED CONDENSER AND EVAPORATOR COIL

ELECTRONIC SINGLE ENTHALPY ECONOMIZER

DIRTY FILTER SWITCH

DOUBLE WALL

PHASE MONITOR

COIL GUARD

POWERED GFI CONVENIENCE OUTLET

NON-POWERED GFI CONVENIENCE OUTLET

BAS CONTROLS (Simplicity® INTELLI-Comfort™, CPC,

JOHNSON, HONEYWELL, NOVAR)

Unitary Products Group

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Contents Description WarrantyTable of Contents Ton Sunline MagnaDRY Model Number Nomenclature Product NomenclatureFeatures Unit Cutaway Normal ModeReheat Control Board Alternate ModeReheat Controls Part Phenolic Coated EVAPORATOR, REHEAT, FACTORY-INSTALLED OptionsSingle Input Electronic Enthalpy Motorized Outdoor AIR Intake DamperFIELD-INSTALLED Accessories Power exhaust is not available as a field installed option Capacity Ratings ARI Sound Power RATING1GAS Heat Ratings MBH Cooling Capacities for WR180104 151 16.9 142 118 101 147 15.2 Cooling Capacities for WR240 240 21.3 101 225 23.1 100 5000 221 21.0 140 Cooling Capacities for WR300 281 26.6 128 Cooling Capacities for WR180 Alternate Reheat Mode Cooling Capacities for WR240 Alternate Reheat Mode Cooling Capacities for WR300 Alternate Reheat Mode EV+U Lbs/Hr Lbs/Hr AIR Temp Altitude Feet Altitude Correction Factors$OWLWXGH7HPSHUDWXUH&RQYHUVLRQDFWRU ESP CFM RPM BHP Scfm Scfm Scfm Scfm Ton Standard Drive, Gas Heat, Bottom Connection VP68 x BK100 HP motor 10 HP motor 7.5 HP motor YTG-B-0107 12000 11000 8000 Ton High Static Drive, Cooling Only, Bottom Duct Connection Ton High Static Drive, Gas Heat, Bottom Duct Connection Blower Motor and Drive Data Power Exhaust PerformanceStatic RESISTANCES1 BRKR1 78.8 100 97.3 125 E18 13.5 37.5 86.5 100 88.8 107.3 125 E18 13.5 37.5 WR180 WR240 WR300 Physical Data ModelsHole Rear View Dimensions Minimum Clearances Unit Dimensions WR180, 240 & 300 RainhoodUnit Center of Gravity Four and SIX Point Loads Unit Roof Curb Dimensions Typical Field Wiring Indoor Evaporator FAN Assembly Guide SpecificationsUnit Cabinet GAS Heating Section WR***N Models Outdoor Condenser FAN AssemblyRefrigerant Components Unit ControlsElectrical Requirements Unit Operating CharacteristicsOther PRE-ENGINEERED Accessories Available Other Factory Installed OptionsLOW Speed Drive WR240 & WR300 only

WR240, WR300 specifications

The York WR300 and WR240 are advanced water-cooled screw chillers that embody innovation, efficiency, and sustainability. These chillers are part of York’s renowned product line and are designed for a variety of commercial applications, ranging from large office buildings to industrial processes.

One of the standout features of the WR300 and WR240 models is their energy efficiency. Both units utilize the latest in variable-speed drive technology, which allows for precise control of the compressor speed based on the cooling demand. This results in lower energy consumption, especially in part-load conditions, making the chillers not only eco-friendly but also cost-effective over their lifespan.

The WR300 is designed to provide cooling capacities of up to 300 tons, while the WR240 offers capacities of up to 240 tons. These substantial capacities make them suitable for larger applications where dependable cooling is essential. The units are compact in design, allowing for flexible installation options, even in properties with space constraints.

Another key characteristic of the York WR chillers is their advanced refrigerant technology. Utilizing R-134a refrigerant, these chillers comply with global environmental standards and regulations, contributing to reduced greenhouse gas emissions. This makes the WR300 and WR240 not only high-performing but also aligned with a sustainable future.

The chillers are equipped with a robust control system that enhances operational performance and reliability. Features such as the advanced York YZ controller facilitate remote monitoring and diagnostics, allowing facility managers to optimize chiller performance and enhance maintenance processes. This advanced control capability minimizes downtime and maximizes productivity.

Noise reduction is also a significant consideration with these units. The WR series incorporates sound-dampening technology, making it an ideal choice for installations in noise-sensitive environments, such as schools or hospitals.

Furthermore, the construction of these chillers emphasizes durability and ease of maintenance. The components are engineered to withstand harsh operating conditions, and the design allows for straightforward access to key components, thereby simplifying service tasks.

In summary, the York WR300 and WR240 chillers stand out due to their energy efficiency, advanced refrigerant technology, robust control systems, and durability. These features make them ideal solutions for modern HVAC needs, supporting businesses while prioritizing environmental stewardship.