York WR300, WR240 Blower Motor and Drive Data, Static RESISTANCES1, Power Exhaust Performance

Page 38

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

262292-YTG-B-0107

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TABLE 23: BLOWER MOTOR AND DRIVE DATA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MOTOR1

 

ADJUSTABLE MOTOR PULLEY

FIXED BLOWER PULLEY

 

BELT

 

MODEL

 

BLOWER

 

 

(NOTCHED)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIZE

DRIVE

RANGE

 

 

 

EFF.

DESIG-

OUTSIDE

PITCH

BORE

DESIG-

OUTSIDE

PITCH

BORE

DESIG-

PITCH

 

 

(RPM)

HP

FRAME

 

 

 

 

 

(%)

NATION

DIA.

DIA.

(IN.)

NATION

DIA.

DIA.

(IN.)

NATION

LENGTH

QTY.

 

 

 

 

 

 

 

 

 

 

 

 

(IN.)

(IN.)

 

 

(IN.)

(IN.)

 

 

(IN.)

 

 

Standard

790/970

5

184 T

 

89.5

 

 

 

1-1/8

BK105

10.25

9.9

 

 

 

 

15 TON

High

940/1130

7.5

213 T

 

91

1VP62

5.95

4.9-5.92

1-3/8

BK90

8.75

8.4

1

BX81

82.8

1

 

Speed

 

 

 

 

 

 

 

 

 

Access

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Speed

910/1100

7.5

213 T

 

91

1VP68

6.55

5.5-6.5

1-3/8

 

 

 

 

 

 

 

 

Drive

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20 TON

Standard

 

10

215 T

 

91

 

 

 

 

BK100

9.75

9.4

1-3/16

BX81

82.8

1

 

High

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Speed

1000/1180

15

254 T

 

91

1VP71

7.1

5.4-6.6

1-5/8

 

 

 

 

 

 

 

 

Access

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Speed

900/1100

7.5

213 T

 

91

1VP65

6.0

4.8-6.0

1-3/8

 

 

 

1-3/16

BX78

79.8

 

 

Drive

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25 TON

Standard

 

 

 

 

 

 

 

 

 

1B5V94

9.7

9.5

 

 

 

1

 

High

 

15

254 T

 

91

 

 

 

1-5/8

 

 

 

1-7/16

 

 

 

 

Speed

1000/1200

 

1VP71

7.1

5.5-6.5

 

 

 

BX81

82.8

 

 

Access

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.All motors have a nominal speed of 1800 RPM, a 1.15 service factor and a solid base. They can operate to the limit of their service factor because they are located in the moving air, upstream of any heating device.

2.Do NOT close this pully below 1 turn open.

TABLE 24: STATIC RESISTANCES1

 

 

 

 

 

RESISTANCE, IWG

 

 

 

DESCRIPTION

 

 

 

 

 

CFM

 

 

 

 

 

 

15 TON

 

 

20 TON

 

 

25 TON

 

 

 

 

 

 

 

 

 

 

 

4500

6000

7500

6000

8000

9000

7500

8000

9000

WET INDOOR COIL

 

0.1

0.1

0.1

0.1

0.1

0.2

0.1

0.1

0.2

 

18 KW

0.3

0.4

0.4

0.4

0.4

0.5

0.4

0.4

0.5

ELECTRIC HEAT OPTIONS

36 KW

0.3

0.4

0.5

0.4

0.5

0.5

0.5

0.5

0.5

54 KW

0.4

0.5

0.5

0.5

0.5

0.6

0.5

0.5

0.6

 

 

72 KW

0.4

0.5

0.5

0.5

0.5

0.6

0.5

0.5

0.6

ECONOMIZER OPTION

 

0.1

0.1

0.1

0.1

0.1

0.2

0.1

0.1

0.2

HORIZONTAL DUCT CONNECTIONS2

0.1

0.2

0.3

0.2

0.3

0.5

0.3

0.3

0.5

1.Deduct these resistance values from the available external static pressures shown in the respective Blower Performance Table.

2.Since the resistance to air flow will be less for horizontal duct connections than for bottom duct connections, add these pressures to the ESP values on the respective unit’s blower performance table.

TABLE 25: POWER EXHAUST PERFORMANCE

MOTOR

 

 

 

STATIC RESISTANCE OF RETURN DUCTWORK, IWG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SPEED1

 

0.2

0.3

 

 

0.4

 

0.5

 

0.6

CFM

 

kW

CFM

kW

CFM

 

kW

CFM

 

kW

CFM

 

kW

 

 

 

 

 

HIGH2

5250

 

0.83

4500

0.85

4200

 

0.88

3750

 

0.93

3000

 

0.99

MEDIUM

4900

 

0.77

3900

0.79

3500

 

0.82

2900

 

0.85

-

 

-

LOW

4400

 

0.72

3700

0.74

3000

 

0.78

-

 

-

-

 

-

1.Power exhaust motor is a 3/4 HP, PSC type with sleeve bearings, a 48 frame and inherent protection.

2.The factory setting.

38

Unitary Products Group

Image 38
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 GAS Heat Ratings Sound Power RATING1Capacity Ratings ARI 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 Static RESISTANCES1 Power Exhaust PerformanceBlower Motor and Drive Data 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 Unit Cabinet Guide SpecificationsIndoor Evaporator FAN Assembly 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.