York Y32, Y33, Y34 manual Controls

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246653-YTG-E-0108

to allow complete drainage. Coils in excess of 48 inches high shall have an intermediate drain pan, also fabricated of galva- nized powder painted steel extending the entire finned length of the coil to provide better water drainage. Drainage from the intermediate drain pan shall be to the primary drain pan. OPTIONAL: Drain pans shall be constructed of stainless steel. OPTIONAL: Evaporator coils shall be protected by the Technicoat 10-1 four coat process. Coils shall be dipped in a phenolic coating, which provides substantial resistance to corrosion of aluminum and copper. OPTIONAL: Copper-tube/ Copper-finned evaporator coil assemblies.

Compressors

Units shall have two (25 ton), three (30 ton) or four (40 ton) industrial duty hermetic scroll compressors, independently piped and charged. Compressor frame shall be cast iron, with cast iron fixed and orbiting scrolls. Compressors shall be internally protected with thermal pressure relief. Each com- pressor shall include a discharge line check valve.Compres- sors shall be vibration isolated from the unit, and installed in an easily accessible area of the unit.

Condenser Coils

Condenser coils shall have 3/8” seamless copper tubes, arranged in staggered rows, mechanically expanded into alu- minum fins. Coils shall be protected from hail damage with a V configuration, with individual flat coils rotated 30 from the vertical plane for each condensing circuit. Condensing coils shall have an integral subcooler for more efficient, stable operation. OPTIONAL: Condenser coils shall be protected by the TechniCoat 10-1 four coat process. Coils shall be dipped in a phenolic coating, which provides substantial resistance to corrosion of aluminum and copper. OPTIONAL: Copper- tube/Copper-finned condenser coil assemblies.

Condenser Fans and Motors

Condenser fans shall be direct drive, propeller type, discharg- ing vertically. Condenser fan motors shall be 3 phase, totally enclosed air over (TEAO) type, with built in thermal overload protection.

Refrigerant Piping

All interconnecting piping between refrigeration components shall be copper tubing with brazed joints. Each refrigerant cir- cuit shall be equipped with liquid line filter drier, and moisture indicating sight glass. Each circuit shall also have both high and low pressure switches installed on either side of the com- pressor and include shrader depressors for replacement of the pressure switches without removing charge. All small diameter distributor tubing to the evaporator coil shall be pro- tected by polyurethane sleeves over the length of the tubing to prevent the tubes from copper-to-copper contact during shipment or operation.

Hot Gas Bypass (Optional on CV; standard on VAV)

Unit shall have hot gas bypass factory installed on the lead compressor.

CONTROLS

GENERAL DESCRIPTION

Equipment with Simplicity® as standard shall be factory run- tested through the control, after the test is complete; there will be no wires to re-connect. All control wiring points shall be tested and verified through communication.

The control shall be UL or CSA recognized. The control shall be manufactured in a manufacturing facility that is certified to ISO 9001.

COMPRESSOR CONTROL

The control shall have a five-minute Anti-Short Cycle Delay to prevent excessive compressor cycling. The control shall have a three-minute minimum run time to insure that oil gets returned to the compressor each time it starts. The minimum runtime shall be programmable up to 10 minutes.

The control shall monitor the High and Low Pressure switches separately for each refrigeration circuit. The control shall have a 30 second Low Pressure Switch bypass when it starts any compressor.

A hard compressor lockout shall occur if the control detects the same switch trip three times in a two-hour window, which starts when the first trip occurs. On the first and second trips, the control will turn the compressor off and wait five-minutes after the switch re-closes, before restarting the compressor.

The control shall be capable of operating both compressors and the economizer when there is a call for both stages of cooling.

The control shall have a means of locking out mechanical compression below a programmable low ambient trip point. This must be done without adding extra components to the unit.

The control shall have a means of locking out the mechanical compression when the economizer is operating in free cool- ing mode without additional components

The control shall have a means of starting the compressor before the indoor Fan comes on w1hen operating with a Thermostat in the AUTO FAN mode.

FAN CONTROL

The control shall have fully adjustable Fan ON and Fan OFF delays for both Heating and Cooling settable at the control or via communication.

The control's default Fan OFF delay for Cooling shall be 30 seconds to take advantage of the remaining capacity in the coil after the compressor has been turned off.

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Johnson Controls Unitary Products

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Contents Millennium Simplicity Elite Features Millennium Single Package Rooftop UnitsTOMORROW’S Unit Today General FeaturingTable of Contents Power Exhaust ONE Forward Curve List of FiguresList of Tables Electrical Data 40 TON with ElectricFeatures and Benefits OverviewInstallation Features Construction Features List of Features and Benefits Standard FeaturesFactory Installed Options Field Installed AccessoriesNomenclature General Physical Data Selection Procedure Refrigerant ChargeSelect Unit Unit Tons Model TypeTemperature Rise Standard GAS Heating CapacitiesMinimum Heating CFM Modulating GAS Heating CapacitiesMBH Modulating HeatElectric Heating Capacities HOT Water HEATING1 Physical Data HOT Water Coil 1 ROWWater Pressure Drop 1 ROW, 25 & 30 TON Static Resistance HOT Water Coil 25 & 30 TONHOT Water Coil 1 ROW 40 TON1 HOT Water Coil 25 & 30 TON, 1 ROW, AT 10 GPM HOT Water Coil 25 & 30 TON, 1 ROW, AT 30 GPM HOT Water Coil 40 TON, 1 ROW, AT 10 GPM HOT Water Coil 40 TON, 1 ROW, AT 30 GPM Physical Data HOT Water Coil 2 ROW Water Pressure Drop 2 ROW, 25 & 30 TONHOT Water Coil 2 ROW, 25 & 30 TON1 HOT Water Coil 2 ROWS, 40 TON1HOT Water Coil 25 & 30 TON, 2 ROW, AT 20 GPM HOT Water Coil 25 & 30 TON, 2 ROW, AT 60 GPM HOT Water Coil 40 TON, 2 ROW, AT 20 GPM HOT Water Coil 40 TON, 2 ROW, AT 60 GPM Steam Heating Physical Data Steam Coil 1 ROWSteam Coil 1 ROW, 40 TON Static Resistance Steam Coil 1 ROW, 40 TONSteam Coil 40 TON, 1 ROW Exhaust FAN Drive Data Supply FAN Motor and Drive DATA1RPM STDSupply AIR Drive Adjustment Example40 TON Drive Adjustment 25 TON Drive Adjustment30 TON Drive Adjustment Drive Adjustment for Power Exhaust 25 TON Drive Adjustment for Power Exhaust 30 & 40 TONRPM REQ’D PD HP M Otor & 976 RPM D RiveCooling Performance 25 TON MBHCooling Performance 30 TON Standard Capacity Coil 95F 105F 125F Cooling Performance 30 TON High Capacity Coil 95F 105F CFM Cooling Performance 40 TON Standard Capacity Coil 95F 105F 115F 125F Cooling Performance 40 TON High Capacity Coil 95F 105F 115F 125F Altitude Correction Factors AIR Temp Altitude FeetYTG-E-0108 FAN Performance 25 TON1 Available External Static Pressure IWG Airflow CFM RPM BHP3800 FAN Performance 30 TON 1 RPM BHP3Ton Forward Curve FAN Performance 40 TON1,2 18000FAN Performance 40 TON FAN Performance 25 & 30 TON AIRFOIL1,2 1601 1636 1672 1707 1740 FAN Performance 40 TON AIRFOIL1,2 17000 18000 Component Static RESISTANCE1 Power Exhaust ONE Forward Curved FAN 25 TON1 Available External Static Pressure IWG Airflow CFM RPM BHP2Power Exhaust 25 Ton Power Exhaust TWO Forward Curved Fans 30 & 40 TON1 Power Exhaust TWO Forward Curved Fans 30 & 40 Tons Electrical Data 25 TON Basic Unit R22 Electrical Data 30 TON Basic Unit R22Electrical Data 40 TON Basic Unit R22 Electrical Data 25 TON with Electric Heat R22 MCAMPS RLA LRA MCC QTY FLAElectrical Data 30 TON with Electric Heat R22 QTY RLA LRA MCC FLAElectrical Data 40 TON with Electric Heat R22 Electrical Data 25 TON with Power Exhaust R22 Electrical Data 30 TON with Power Exhaust R22 Electrical Data 40 TON with Power Exhaust R22 RLA LRA MCC YTG-E-0108 11.0 14.2 100 22.2 17.0 22.0 110 208-3-60 460-3-60 11.0 17.0 12.4 19.3 100 22.0 110 27.0 102 109 125 107 208-3-60 460-3-60 11.0 17.0 100 12.4 19.3 110 22.0 101 125 27.0 107 102 109 Unit Weights Supply FAN Motor VFD WeightsExhaust FAN Motor VFD Weights LECT. H EATUnit Cornerweight Indoor Sound Power RatingOutdoor Sound Power Rating Attenuation FactorsRear Left Side Right Left Side Left Side Rear Front Rear Rear Millennium Overhead View Back View Endfixedreturnoutsideorwithair Partial Roof Curb Model 1RC0455P Guide Specifications York Millennium 25, 30, & 40 TON Units Energy Recovery Ventilation Field Installed Option AIR Filtering SystemAIR Inlet System Heating System OptionalRefrigeration System Electric Heating SectionHot Water Heating Coil Steam Heating CoilControls Comfort Control Features Equipment Control FeaturesOptional Communication Translator OverviewAvailable Accessories Optional ControlJohnson Controls Unitary Products York Drive Norman, OK

Y32, Y34, Y33 specifications

The York Y33, Y32, and Y34 series represents a significant advancement in rooftop packaged units designed for commercial HVAC applications. These models are known for their reliability, energy efficiency, and innovative features that cater to diverse climate control needs.

The York Y33 series introduces modern features aimed at maximizing comfort and reducing energy costs. Its sleek design and compact size make it a versatile option for various applications, including retail spaces, office buildings, and industrial facilities. One of the standout features of the Y33 is its variable-speed compressor technology. This allows the unit to adjust its cooling output based on real-time demand, resulting in notable energy savings compared to traditional single-speed units.

The Y32 model builds upon the strengths of the Y33, offering enhanced capabilities for large commercial spaces. It incorporates advanced controls and building management system (BMS) connectivity, enabling seamless integration into existing infrastructure. The Y32 is designed with a focus on ease of maintenance and serviceability, featuring accessible components that streamline repair processes.

The York Y34 series emphasizes environmentally friendly practices, utilizing low-GWP refrigerants that minimizes its impact on the environment. It also boasts improved heat exchangers that increase efficiency and performance. The Y34’s design minimizes noise levels, making it ideal for applications where quiet operation is paramount, such as schools and healthcare facilities.

All three models share several key technologies, including fan and motor designs that optimize airflow while reducing energy consumption. Additionally, the series features enhanced insulation, significantly improving thermal performance and reducing the risk of condensation-related issues.

In summary, the York Y33, Y32, and Y34 models represent a commitment to innovation in commercial HVAC systems. Their combination of advanced technology, energy efficiency, and user-friendly design makes them suitable for a variety of applications while promoting sustainability and operational cost-effectiveness. Investing in these units not only supports optimal indoor climate control but also aligns with the growing demand for eco-friendly solutions in today’s commercial landscape.
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