VCN VERTICALAir Cooled Condensing Units

VCN 3 - 25 Ton Series

GENERAL MECHANICALSPECIFICATIONS

2

GENERALAll models 3-25 tons ship fully assembled and factory wired. Units include “Scroll” type hermetic compressor(s), aluminum fin/copper tube condenser coil, condenser fan motor, and all necessary controls. Units are shipped with a Nitrogen holding charge only. All models are designed for free-standing mount-ing on the floor, or on a field fabricated structural steel stand.

CABINETAll cabinets are completely constructed of heavy gauge gal-vanized steel. The unit interior is insulated with 1/2” thick, 2 lb. density insulation. Service panels are equipped with lifting handles for ease of removal and handling. Duct flanges for condenser discharge and condenser intake are provided with the unit for field installation.

REFRIGERANT CIRCUITSAll models utilize “Scroll” type hermetic compressors. Compressors are mounted on rubber isolators to minimize vibration transmission. Internal overload protection is provid-ed. External high pressure and low pressure cutout switches are included in each compressor control circuit. Crankcase heaters are standard on all models. The 3, 4 and 5 ton units have a single refrigeration circuit. The 8 - 20 ton units feature two independent refrigeration circuits. The 25 ton unit is triple compressor unit with three independent refrigeration circuits. Each refrigeration circuit includes a liquid line filter drier and service gauge ports.

CONDENSER COILSThe condenser coil is constructed of internally enhanced cop-per tubes mechanically bonded to rippled aluminum plate fins. Coils are employed in a draw-thru configuration.

CONDENSER FAN AND MOTORForward curved, double inlet and double width centrifugal blowers are used for condenser air movement. Blower wheels are fabricated of galvanized steel. Blowers employ solid steel shafts, supported in permanently lubricated ball bearing. All blowers are belt driven. Variable-pitch motor sheaves allow for field adjustment of blower rpm. Motors shall be 1800 RPM, open drip proof design. Three-phase motors are provided with external, manual reset overload protection. Single-phase motors feature auto reset internal overloads.

ELECTRICAL/CONTROLSAll units are completely factory wired with all necessary con-trols. A manual reset circuit is provided on each compressor control circuit in the event of high/low pressure cutout. A 24 volt control circuit, with oversize transformer, is provided for field connection.

GENERAL DATA

3

Note: Cooling performance is rated at 45oF saturated suction temperature. Gross capacity does not included the effect of suction line loss.

Nominal Capacity036 = 36,000 BTHU048 = 48,000 BTHU060 = 60,000 BTHU096 = 96,000 BTHU

120 = 120,000 BTHU144 = 144,000 BTHU180 = 180,000 BTHU240 = 240,000 BTHU300 = 300,000 BTHU

Product TypeVertical Condensing

Air-cooled

Service DigitProduction Variant

Voltage12 = 208-230/1/6032 = 208-230/3/6034 = 460/3/6035 = 575/3/60

Design Series

Model# VCN 120 F 32 A - A

SKYMARK MODEL # NOMENCLATURE CODE

Units 3 through 10 tons rated in accordance with ARI Standard 210/240. Units 12 through 25 tons rated in accordance with ARI Standard 365.

ModelNominal Cooling (Tons)

Cooling PerformanceGross Cooling Capacity (Btuh)Condensing Unit CFMSEER/EER

Compressor - Qty./TypeCapacity Steps (%)

Refrigerant CircuitsNumber of Refrigerant CircuitsSuction Line OD (in)Liquid Line OD (in)Refrigerant Type

Condenser Coil-TypeFace Area (sq. ft.)Rows/FPI

Condenser Fan-TypeNumber UsedDiameter x Width (in.)DriveMotor HP (Standard)

WeightOperatingShipping

VCN036F3

39,000240013.40

VCN048F4

45,200260012.87

VCN060F5

58,000320012.03

VCN096F8

90,300470012.70

VCN120F10

114,800550012.10

VCN144F12

143,800660011.98

VCN180F15

175,000750011.15

VCN240F20

226,0001020011.06

VCN300F25

288,0001150010.75

1/Scroll 1/Scroll 1/Scroll 2/Scroll 2/Scroll 2/Scroll 2/Scroll 2/Scroll 3/Scroll 100/0

17/81/2

17/81/2

17/81/2

27/81/2

27/81/2

21 1/81/2

21 1/85/8

21 3/85/8

31 1/85/8

100/0 100/0 100/50/0 100/50/0 100/50/0 100/50/0 100/50/0 100/66/33/0

Adjustable Belt

Enhanced Copper Tubes, EnhancedAluminum Fins

Centrifugal, Forward Curved

7.084/16

112x15

1

385425

400440

435475

660700

695735

870915

9651010

11251170

12501300

1 1.5 2 3 3 5 7.5 7.5

112x15

112x15

212x11

212x11

215x15

215x15

218x13

218x13

7.084/16

7.084/16

12.284/14

12.284/14

15.824/14

15.824/14

20.554/14

24.134/14

R-22 (NOTE: All units are shipped with Nitrogen holding charge only)

4

208-230/1/60208-230/3/60

460/3/60575/3/60

208-230/1/60208-230/3/60

460/3/60575/3/60

208-230/3/60460/3/60575/3/60

208-230/3/60460/3/60575/3/60

208-230/3/60460/3/60575/3/60

208-230/3/60460/3/60575/3/60

208-230/3/60460/3/60575/3/60

208-230/3/60460/3/60575/3/60

208-230/3/60460/3/60575/3/60

VCN036F12VCN036F32VCN036F34VCN036F35

VCN048F12VCN048F32VCN048F34VCN048F35

VCN060F32VCN060F34VCN060F35

VCN096F32VCN096F34VCN096F35

VCN120F32VCN120F34VCN120F35

VCN144F32VCN144F34VCN144F35

VCN180F32VCN180F34VCN180F35

VCN240F32VCN240F34VCN240F35

VCN300F32VCN300F34VCN300F35

QTY RLA LRA HP FLA RPMCompressorModel # Voltage

1 @1 @1 @1 @

1 @1 @1 @1 @

1 @1 @1 @

2 @2 @2 @

2 @2 @2 @

2 @2 @2 @

2 @2 @2 @

2 @2 @2 @

3 @3 @3 @

17.911.45.74.7

20.415.07.15.4

19.37.56.4

13.97.15.4

19.37.56.4

20.710.08.2

28.614.29.7

33.617.313.5

32.116.412.0

88.077.039.031.0

109.088.044.034.0

123.049.540.0

88.044.034.0

123.049.540.0

156.075.054.0

196.0100.090.0

225.0114.080.0

195.095.080.0

1.001.001.001.00

1.001.001.001.00

1.501.501.50

2.002.002.00

3.003.003.00

3.003.003.00

5.005.005.00

7.507.507.50

7.507.507.50

7.43.11.41.1

7.43.11.41.1

4.52.11.7

5.92.82.2

8.74.03.2

8.74.03.2

13.76.65.3

22.210.88.2

22.210.88.2

1800180018001800

1800180018001800

180018001800

180018001800

180018001800

180018001800

180018001800

180018001800

180018001800

29.7817.358.536.99

32.9020.4810.337.79

28.6311.489.70

37.1818.8714.24

52.1320.8817.60

55.2826.5021.65

78.0538.5527.13

97.8049.7338.58

126.5364.1047.20

Condenser Fan Min. Cct.Ampacity

Max Fuse/Cct.Bkr.Amp

45251515

50351515

451515

502515

702520

703525

1005035

1256050

1508050

ELECTRICAL DATA

2400260032004700550066007500

1020011500

External Static Pressure - Inches W.C.Model #

VCN036FVCN048FVCN060FVCN096FVCN120FVCN144FVCN180FVCN240FVCN300F

OutdoorCFM

623655767669816722796704804

0.430.520.891.191.711.772.353.724.76

714741839811873735780700728

0.530.631.031.381.942.062.674.125.20

800823908882941792834741767

0.630.741.171.592.192.463.014.505.64

887894973951

1008848886781805

0.740.881.311.822.462.603.374.916.09

963964

103510171073900936820841

0.871.001.462.072.753.003.765.326.52

RPM BHP0.2

RPM BHP0.4

RPM BHP0.6

RPM BHP0.8

RPM BHP1.0

RPM BHP1.2

1038---

1136-

983857876

1.00---

3.06-

4.185.736.97

NOTE: Performance data calculated at 15°F subcooling and 20°F superheat and does not include capacity loss due to refrigerant drop.

FAN PERFORMANCE DATA

5

NOTE: Performance data calculated at 15°F subcooling and 20°F superheat and does not include capacity loss due to refrigerant drop.

COOLING PERFORMANCE DATA

6

NOTE: Performance data calculated at 15°F subcooling and 20°F superheat and does not include capacity loss due to refrigerant drop.

COOLING PERFORMANCE DATA

7

8

NOTE: Performance data calculated at 15°F subcooling and 20°F superheat and does not include capacity loss due to refrigerant drop.

COOLING PERFORMANCE DATA

9

NOTE: Performance data calculated at 15°F subcooling and 20°F superheat and does not include capacity loss due to refrigerant drop.

COOLING PERFORMANCE DATA

10

3/4/5 TON UNIT DIMENSIONS

11

8/10 TON UNIT DIMENSIONS

12

12/15 TON UNIT DIMENSIONS

13

20 TON UNIT DIMENSIONS

14

25 TON UNIT DIMENSIONS

OPTIONAL ACCESSORIES

15

FACTORY INSTALLED

Hot Gas Bypass Includes adjustable hot gas regulator factory piped to com-pressor discharge line. Hot gas outlet must be field piped to evaporate distributor inlet. Bypass regulator shall be sized for a minimum of 50% of compressor capacity. Bypass installed on lead compressor circuit only. The bypass valve opens at a preset suction pressure to prevent coil freeze-up at light evaporator load, or low airflow conditions.

Corrosion Resistant Coatings Condenser coil shall receive a 1-mil thickness of a cathodic epoxy type electro-deposition coating, applied in a multiple dip and brake process.

Anti-Short Cycle TimerTime delay relay will be provided for each compressor circuit. Compressor will be locked out for 5 minutes when Thermostat contacts open, or there is a momentary power outage.

FIELD INSTALLED

Low Ambient ControlHead pressure control damper kit will allow unit operation down to 0ºF ambient. Damper assembly mounts on con-denser air intake. The kit includes damper actuator and low pressure switch bypass timer(s).

GENERAL DATA

Skymark International warrants to the original owner/user of the Skymark International unit identified above to be free of original defects in material or work-manship for a period of one year from the effective date of this warranty.

This warranty extends to twelve (12) months from the date of start-up, but no lon-ger than eighteen (18) months from the date of shipment. The warranty does not include the filter.

This warranty on the unit obligates Skymark International to repair or replace, free of charge, any part or parts that show evidence of being defective in material and workmanship and are so deemed so defective by authorized personnel of Skymark International. The part must be returned for replacement with the proper information when requested.

Skymark International assumes no obligation for labor required to replace the defective part or parts nor the freight or postage required to return or to secure the part which shall be at the cost and expense of the original Owner/User.

Skymark International will replace the defective part or parts within 21 days after the return to Skymark International of such defective part or parts provided notice of such defect was given by the original Owner/User within the Warranty period.

An optional, additional four year protection plan on the compressor is available at modest cost at the time of original unit sale only. This obligates Skymark International to replace f.o.b. factory, a defective compressor of equal capacity free of charge. No responsibility is assumed by Skymark International for refriger-ant, labor, or freight to and from the factory.

THIS WARRANTY IS IN LIEU OF ALL OTHER EXPRESSED WARRANTIES. ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE ARE LIMITED IN DURATION TO ONE (1) YEAR FROM EFFECTIVE DATE OF THIS WARRANTY. SKYMARK INTERNATIONAL IS NOT LIABLE FOR CONSEQUENTIAL DAMAGES RESULTING FROM ANY DEFECT IN PART. THERE ARE NO OTHER OBLIGATIONS ON THE PART OF SKYMARK INTERNATIONAL.

WARRANTY OF FITNESSSkymark International does not provide a warranty of fitness since, in good faith, Skymark International cannot anticipate or control the many different conditions under which Skymark International information and products may be used.

SKYMARK PRODUCT WARRANTY

PHONE: 905-426-1812

FAX: 905-426-1804

TOLL FREE: 1-888-SKYMARK (759-6275)

WEB: www.skymarkinternational.com

Skymark maintains a continuous product improvement policy, therefore specifications are subject to change without notice.

10/04

City of New YorkDepartment of Buildings

MEA