York DH 078, 90, 102 manual Low Limit / Compressor Lockout Kit

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246646-YTG-C-0606

ventilation.With single enthalpy input, the economizer control monitors outdoor air. The dual enthalpy kit pro- vides a second input used to monitor the return air. With a dual input kit installed, the economizer control com- pares the values of the two enthalpy or temperature inputs and positions the dampers to provide the maxi- mum efficiency possible.

You can order 1EH0409 Barometric Relief/FA Hood for field installations without an ERV.

•Dual Enthalpy Control, Accessory - This kit contains the required components to convert a single enthalpy economizer to dual enthalpy.

•Barometric Relief Damper - Zero to 100% capacity barometric relief dampers for use with horizontal flow, or field installed slab economizers.

•Power Exhaust - This accessory installs in the unit with a down flow economizer. Power exhaust plugs into the connector in the unit bulkhead. You must purchase 1EH0408 barometric relief when applying to a hori- zontal flow application.

•Manual Outdoor Air Damper - Like the motorized out- door air damper, each manual outdoor air damper includes a slide-in damper assembly with an outdoor air hood and filters. Customers have a choice of dampers with ranges of 0% to 100% or 0% to 35% outdoor air entry.

•Motorized Outdoor Air Damper - The motorized out- door air damper includes a slide-in/plug-in damper assembly with an outdoor air hood and filters. The out- door air dampers open to the preset position when the indoor fan motor is energized. The damper has a range of 0% to 100% outdoor air entry. Factory installed option or field installed accessory.

•Smoke Detectors - The smoke detectors stop operation of the unit by interrupting power to the control board if smoke is detected within the air compartment.

•CO2 Sensor - Senses CO2 levels and automatically overrides the economizer when levels rise above the preset limits.

•Dirty Filter Switch - This kit includes a differential pres- sure switch that energizes the fault light on the unit ther- mostat, indicating that there is an abnormally high pressure drop across the filters.

•Coil Guard - Field installed decorative wire coil guard.

•Hail Guard - This kit includes a sloped hood which installs over the outside condenser coil and prevents damage to the coil fins from hail strikes. Field installed accessory only.

•Flue Exhaust Extension Kit - In locations with wind or weather conditions which may interfere with proper exhausting of furnace combustion products, this kit can be installed to prevent the flue exhaust from entering nearby fresh air intakes.

•-60°F Gas Heat Kit - For installations which require gas heat units to perform in low ambient temperatures, a gas section heating kit is available. This kit provides electric heat in the gas heat controls section to ensure the gas valve and controls will continue to function properly at extremely low temperatures.

•Gas Heat High Altitude Kit - This kit converts a gas heat unit to operate at high altitudes, 2,000 to 6,000 feet. Conversion kits are available for natural gas and pro- pane.

•Gas Heat Propane Conversion Kit - This kit converts a gas-fired heater from natural gas to propane. It contains the main burner orifices and gas valve replacement springs.

•Gas Piping Kit - Contains pipe nipples, fittings and gas cock required for gas supply connection with external shut off.

•Electric Heaters - The electric heaters range from 9 kW to 54kW and are available in all the voltage options of the base units. All heaters are dual staged. Cooling units include an adapter panel for easy installation of the elec- tric heaters. Necessary hardware and connectors are included with the heaters. All heaters are intended for single point power supply.

•Low Limit / Compressor Lockout Kit

1.Compressor Lockout (CLO): To prevent mechani- cal (compressorized) operation of the unit during cold outdoor conditions where there is a risk of returning liquid refrigerant back to the compressors.

2.Low Limit Control (LLC): To prevent the supply air from dropping below a specified setpoint by utilizing the units first stage heating means when there is a demand for cooling during cold outside conditions.

•Metal Frame Filter Kit - Metal frame with polyester filter medium.

•Permanent Filters - Permanent filters are available.

•Roof Curbs - The roof curbs have insulated decks and are shipped disassembled The roof curbs are available in 8” and 14” heights. For applications with security con- cerns, burglar bars are available for the duct openings of the roof curbs.

•Roof Curb Transition - Single Piece Adapter (10” High) - Roof curbs for transitioning from Sunline™ units to Predator® units. Fits 7.5 to 12.5 Sunline™ roof curbs only.

•Burglar Bars - Mount in the supply and return openings to prevent entry into the duct work.

•Thermostat - The units are designed to operate with 24- volt electronic and electro-mechanical thermostats. All units (with or without an economizer) operate with two- stage heat/two-stage cool or two-stage cooling only ther- mostats, depending upon unit configuration.

Unitary Products Group

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Contents Ashrae 90.1 Compliant Technical GuideTable of Contents Features All units are shipped with 2 throw-away filters installed Factory Installed Options Field Installed Accessories Low Limit / Compressor Lockout Kit Part Number Description Weight AccessoriesYTG-C-0606 Ton York Model Number Nomenclature 078 DH Physical Data102 MBH EER Iplv DH Capacity RatingsUnit Voltage Limitations CFMCooling Capacity DH078 6-1/2 TON Unit Cooling Capacity DH090 7-1/2 TON Unit Cooling Capacity DH102 8-1/2 TON Unit Cooling Capacity DH120 10 TON Unit 5625 Cooling Capacity DH150 12-1/2 TON UnitReturn Dry Bulb F 4375MCA RLA LRA FLA RLA LRA FLA MCA 480 Electric Heat MultipliersKW Cap. Multiplier 240DH078 6-1/2 Side Shot Blower Performance CFM DH090 7-1/2 TON Side Shot Blower PerformanceDH102 8-1/2 TON Side Shot Blower Performance DH120 10 TON Side Shot Blower Performance DH150 12-1/2 TON Side Shot Blower Performance DH078 6-1/2 TON Down Shot Blower Performance DH090 7-1/2 TON Down Shot Blower Performance DH102 8-1/2 TON Down Shot Blower Performance DH120 10 TON Down Shot Blower Performance DH150 12-1/2 TON Down Shot Blower Performance Additional Static Resistance DH078, 090 Additional Static Resistance DH120Power Exhaust Specifications Indoor Blower SpecificationsElectric Heat Minimum Supply AIR CFM Unit Model Number DH078 DH090 DH102 DH120 Unit WeightModel Shipping Operating DH078 DH090 DH102 DH120 Detail aDetail C Unit ClearancesPredator Roof Curb Dimensions Bottom Duct Openings from Above Rear Duct DimensionsDownflow Economizer Hood Detail Economizer Usage Factory Installed Downflow Economizer Field Installed Horizontal Economizer W/POWER Exhaust Slab Economizer END Return W/POWER Exhaust Cooling Unit with GAS Heat Wiring 230 Volt Diagram Cooling Unit WITH/WITHOUT Electric Heat Wiring Diagram YTG-C-0606 General PredatorDescription GAS Heating Section if Equipped Unit Operating CharacteristicsElectric Heating Section if Equipped Other PRE-ENGINEERED Accessories Available Additional Factory Installed Options

102, 90, DH 078 specifications

York DH series chillers, specifically models 078, 90, and 102, are recognized in the HVAC industry for their advanced features, efficiency, and reliability. These chillers are designed to provide exceptional cooling performance for commercial and industrial applications, prioritizing energy efficiency and sustainability.

One of the standout features of the York DH series is its dual-compressor system. This design not only enhances reliability but also contributes to energy savings by allowing the unit to operate at varying loads more effectively. This adaptability ensures that the chillers can maintain optimal performance even during fluctuating demand, reducing energy consumption and associated costs.

The DH series chillers employ a microchannel condenser technology that maximizes heat exchange efficiency. This technology reduces the amount of refrigerant required while also minimizing the footprint of the unit, offering significant advantages in space-constrained environments. Additionally, microchannel coils are less susceptible to corrosion, enhancing the longevity and reliability of the chillers.

Another notable feature is the use of variable-speed drives (VSD) in the compressor system. These drives allow for precise control of the compressor speed, enabling the chillers to adjust to the cooling demands dynamically. This flexibility not only enhances the overall efficiency of the system but also contributes to quieter operation, making the chillers suitable for environments where noise levels are a concern.

York's DH series also integrates advanced controls and monitoring capabilities. The intuitive control system allows for easy programming and operation, providing users with real-time data on system performance and diagnostics. This feature aids in maintenance and troubleshooting, reducing downtime and ensuring that the chillers operate at peak efficiency.

Safety is paramount in the design of the York DH chillers. Each model is equipped with multiple safety features, including pressure relief valves and temperature monitoring systems, to protect the unit during operation. This commitment to safety not only safeguards the equipment but also ensures compliance with industry standards.

In conclusion, the York DH 078, 90, and 102 chillers exemplify modern HVAC technology with their dual-compressor systems, microchannel condenser technology, variable-speed drives, and advanced control systems. These features combine to deliver efficient, reliable, and sustainable cooling solutions for a wide variety of applications. The York DH series represents a significant advancement in chiller design and functionality, making it a preferred choice for many professionals in the field.
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