York Y32, Y33, Y34 manual Selection Procedure, Refrigerant Charge, Select Unit, Unit Tons Model Type

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246653-YTG-E-0108

TABLE 2: REFRIGERANT CHARGE

UNIT (TONS)

MODEL

TYPE

FACTORY/ FIELD

 

CHARGE

 

CHARGED

SYS #1

SYS #2

SYS #3

SYS #4

 

 

 

25

wo/HGBP

R22

Factory

25 lb. / 8 oz.

26lb / 0oz

-

-

25

w/HGBP

R22

Factory

26 lb. / 0 oz.

26 lb. / 0oz

-

-

30

wo/HGBP

R22

Factory

13 lb. / 4 oz.

13 lb. / 8 oz.

13 lb. / 8 oz.

-

30

wo/HGBP1

R22

Factory

14 lb. / 6 oz.

14 lb. / 10 oz.

14 lb. / 10 oz.

-

30

w/HGBP

R22

Factory

14 lb. / 0 oz.

13 lb. / 8 oz.

13 lb. / 8 oz.

-

30

w/HGBP1

R22

Factory

15 lb. / 2 oz.

14 lb. / 10 oz.

14 lb. / 10 oz.

-

40

wo/HGBP

R22

Factory

15 lb. / 5 oz.

15 lb. / 4 oz.

15 lb. / 5 oz.

15 lb. / 15 oz.

40

w/HGBP

R22

Factory

15 lb. / 13 oz.

15 lb. / 4 oz.

15 lb. / 5 oz.

15 lb. / 15 oz.

1.With high capacity evaporator coil.

SELECTION PROCEDURE

GIVEN:

 

Required Cooling Capacity

460,000 Btuh

Required Sensible Cooling

390,000 Btuh

Required Heating (Gas)

320,000 Btuh

Entering Air on Evaporator

83° F DB/ 67° F WB

Outside Design Temperature

95° F

Supply Fan CFM

13,000 CFM

External Static Pressure

1.25 IWG

Electrical Supply Voltage

460-3-60

Economizer Required

 

2” Throw Away Filters

 

Constant Volume

 

SELECT UNIT:

1.Determine nominal tons:

460,000 / 12,000 = 38.33 Tons

Thus, a nominal 40 ton unit is selected.

2.Reference Cooling Capacity Table for a 40 ton unit with standard evaporator coil.

a.Locate the table for a standard evaporator coil with 95° F air on the condenser.

b.Enter table at 13,000 CFM and 67°F WB air on evaporator

c.Trace to 83° F Entering Dry Bulb column.

d.Read 493 MBH total capacity and 403 MBH sensi- ble capacity.

The 40 ton unit will meet the cooling requirements. From the nomenclature, the unit will be a Y34. Choose the appropriate configuration for the next digit. Assuming bottom return and supply, the fourth digit would be an “A,” making the model Y34A.

3.Find Gas Heating Capacity Table.

a.Trace down Output column.

b.Find output which exceeds 320,000 Btuh require- ment. The N5 option gives 426 MBH output.

c.Ensure that it is offered in the Y34 unit. Read option model as N5.

From the basic nomenclature, the model now becomes Y34AN5. Add voltage code of “4” for 460-3-60. Nomen- clature becomes Y34AN54.

SELECT FAN SPEED AND HORSEPOWER REQUIREMENTS OF SUPPLY AIR FAN

1.Find Supply Air Performance Tables for the 40 ton unit.

a.Check footnotes and make necessary additions or deductions to static resistance of ductwork:

Ductwork static resistance

1.25

IWG

Economizer static resistance addition

 

 

(interpolate) =.25 IWG + Gas Heat (High) =

0.5

IWG

Total Static Resistance

2.0

IWG

b.Enter Fan Performance Table at 13,000 CFM and

2.0 IWG static pressure:

RPM = 690

BHP = 10.7

NOTE: Either a Class I or Class II blower could be used.

c.Enter the Fan Motor Drive Tables. Selecting a 15 hp motor allows (service factor of 1.5) for a maximum operating BHP greater than the 10.7 BHP require- ment.

SIZE OVERCURRENT PROTECTION DEVICE AND DETERMINE CIRCUIT AMPACITY

1.Find electrical tables for the basic 40 ton unit.

a.Enter table for 460-3-60 voltage.

b.Find 15 hp in the Supply Air Fan column.

c.Trace to Minimum Circuit Ampacity column - read 104.

d.Trace to Max. Fuse/Breaker Size column - read 110.

e.Size wire and overprotection device accordingly.

f.Check all footnotes.

Johnson Controls Unitary Products

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Contents Featuring Millennium Simplicity Elite FeaturesMillennium Single Package Rooftop Units TOMORROW’S Unit Today GeneralTable of Contents List of Figures Power Exhaust ONE Forward CurveElectrical Data 40 TON with Electric List of TablesOverview Features and BenefitsInstallation Features Construction Features Field Installed Accessories List of Features and BenefitsStandard Features Factory Installed OptionsNomenclature General Physical Data Unit Tons Model Type Selection ProcedureRefrigerant Charge Select UnitModulating GAS Heating Capacities Temperature RiseStandard GAS Heating Capacities Minimum Heating CFMMBH Modulating HeatElectric Heating Capacities Static Resistance HOT Water Coil 25 & 30 TON HOT Water HEATING1Physical Data HOT Water Coil 1 ROW Water Pressure Drop 1 ROW, 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 HOT Water Coil 2 ROWS, 40 TON1 Physical Data HOT Water Coil 2 ROWWater Pressure Drop 2 ROW, 25 & 30 TON HOT Water Coil 2 ROW, 25 & 30 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 Static Resistance Steam Coil 1 ROW, 40 TON Steam HeatingPhysical Data Steam Coil 1 ROW Steam Coil 1 ROW, 40 TONSteam Coil 40 TON, 1 ROW STD Exhaust FAN Drive DataSupply FAN Motor and Drive DATA1 RPMExample Supply AIR Drive Adjustment40 TON Drive Adjustment 25 TON Drive Adjustment30 TON Drive Adjustment HP M Otor & 976 RPM D Rive Drive Adjustment for Power Exhaust 25 TONDrive Adjustment for Power Exhaust 30 & 40 TON RPM REQ’D PDMBH Cooling Performance 25 TONCooling 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 AIR Temp Altitude Feet Altitude Correction FactorsYTG-E-0108 Available External Static Pressure IWG Airflow CFM RPM BHP3 FAN Performance 25 TON1800 RPM BHP3 FAN Performance 30 TON 1Ton Forward Curve 18000 FAN Performance 40 TON1,2FAN 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 Available External Static Pressure IWG Airflow CFM RPM BHP2 Power Exhaust ONE Forward Curved FAN 25 TON1Power Exhaust 25 Ton Power Exhaust TWO Forward Curved Fans 30 & 40 TON1 Power Exhaust TWO Forward Curved Fans 30 & 40 Tons Electrical Data 30 TON Basic Unit R22 Electrical Data 25 TON Basic Unit R22Electrical Data 40 TON Basic Unit R22 RLA LRA MCC QTY FLA Electrical Data 25 TON with Electric Heat R22MCA MPSQTY RLA LRA MCC FLA Electrical Data 30 TON with Electric Heat R22Electrical 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 LECT. H EAT Unit WeightsSupply FAN Motor VFD Weights Exhaust FAN Motor VFD WeightsAttenuation Factors Unit CornerweightIndoor Sound Power Rating Outdoor Sound Power RatingRear 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 Heating System Optional Energy Recovery Ventilation Field Installed OptionAIR Filtering System AIR Inlet SystemSteam Heating Coil Refrigeration SystemElectric Heating Section Hot Water Heating CoilControls Equipment Control Features Comfort Control FeaturesOverview Optional Communication TranslatorOptional Control Available AccessoriesJohnson 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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