York WR300, WR240 warranty Outdoor Condenser FAN Assembly, Refrigerant Components, Unit Controls

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262292-YTG-B-0107

OUTDOOR (CONDENSER) FAN ASSEMBLY

The outdoor fans shall be of the direct-driven propeller type, discharge air vertically, have aluminum blades riveted to corrosion resistant steel spider brackets and shall be dynamically balanced for smooth operation. The 4 outdoor fan motors shall be totally enclosed with permanently lubricated bearings, internally protected against overload conditions and staged independently.

REFRIGERANT COMPONENTS

Compressors:

a. Shall be Scroll compressors internally protected with internal high-pressure relief and over temperature protection.

b.Shall have internal spring isolation and sound muffling to minimize vibration and noise, and be externally isolated on a dedicated, independent mounting.

Coils:

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

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

Refrigerant Circuit and Refrigerant Safety Components shall include:

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

b. Filter drier/strainer to eliminate any moisture or foreign matter.

c. Accessible service gage connections on both suction 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 10° F of sub-cooling at design conditions.

e.All models shall have two independent circuits.

f.Hot gas bypass option shall be factory-installed on compressor #1 discharge line to provide cooling in low- load applications. HGBP shall be a standard feature on VAV models and an optional feature on CV models.

UNIT CONTROLS

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

b. Unit shall incorporate a lockout circuit which provides reset capability at the space thermostat or base unit, should any of the following standard safety devices trip and shut off compressor.

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

1.High-pressure switch.

2.Freeze-protection thermostat, evaporator coil. If any of the above safety devices trip, a LED (light-emitting diode) indicator shall flash a diagnostic code that indicates which safety switch has tripped.

d.Unit shall incorporate "AUTO RESET" compressor over temperature, over current protection.

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

f.Unit control board shall have on-board diagnostics and fault code display.

g.Standard controls shall include anti-short cycle and low voltage protection, and permit cooling operation down to

0°F.

h.Control board shall monitor each refrigerant safety switch independently.

i.Control board shall retain last 5 fault codes in non volatile memory, which will not be lost in the event of a power loss.

GAS HEATING SECTION (WR***N MODELS)

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. The heat exchanger shall be of the tubular type, constructed of T1-40 aluminized steel for corrosion resistance and allowing minimum mixed air entering temperature of 25° F. Burners shall be of the in-shot type, constructed of aluminum coated steel and contain air mixture adjustments. All gas piping shall enter the unit cabinet at a single location through either the side or curb, without any field modifications. An integrated control board shall provide timed control of evaporator fan functioning and burner ignition. 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 (automatic reset).

d.Flame proving controls. Unit shall have two independent stages of capacity.

ELECTRIC HEATING (WR***C/E MODELS)

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 capacities. The heating section shall have a primary limit control(s) and automatic reset to prevent the heating element system from operating at an excessive temperature. Units with Electric Heating shall be wired for a single point power supply with branch circuit fusing (where required).

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Unitary Products Group

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Contents Warranty DescriptionTable of Contents Product Nomenclature Ton Sunline MagnaDRY Model Number NomenclatureFeatures Normal Mode Unit CutawayAlternate Mode Reheat Control BoardReheat Controls Part Motorized Outdoor AIR Intake Damper FACTORY-INSTALLED OptionsSingle Input Electronic Enthalpy Phenolic Coated EVAPORATOR, REHEAT,FIELD-INSTALLED Accessories Power exhaust is not available as a field installed option Sound Power RATING1 Capacity Ratings ARIGAS Heat Ratings Cooling Capacities for WR180 MBH104 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 Altitude Correction Factors AIR Temp Altitude Feet$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 Power Exhaust Performance Blower Motor and Drive DataStatic 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 Physical Data Models WR180 WR240 WR300Hole Rear View Dimensions Unit Dimensions WR180, 240 & 300 Rainhood Minimum ClearancesUnit Center of Gravity Four and SIX Point Loads Unit Roof Curb Dimensions Typical Field Wiring Guide Specifications Indoor Evaporator FAN AssemblyUnit Cabinet Unit Controls Outdoor Condenser FAN AssemblyRefrigerant Components GAS Heating Section WR***N ModelsOther Factory Installed Options Unit Operating CharacteristicsOther PRE-ENGINEERED Accessories Available Electrical RequirementsLOW 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.
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