Engineering Guide - United CoolAir · PDF fileEngineering Guide OmegaAir™ Subject ... • Aluminum Fin / Copper Tube Evaporator Coil • Dual-circuited coil utilizing ... Optional

OmegaAir™ Series Dedicated Outside Air Systems (DOAS)

Engineering GuideEffective September 2017

Vertical and HorizontalWater-Cooled and Air-Cooled

Engineering Guide

OmegaAir™

2Subject to change without notice. 80.10-TD (0917)

Product Features ��3Options ��4

Air-Cooled Indoor Ducted Condenser Section ��4Air-Cooled Outdoor Propeller Fan Condenser ��4

Physical Data - OmegaAir™ Section��5–7Physical Data ��8Air-Cooled Indoor Ducted Condenser ��8Physical Data��9Air-Cooled Outdoor Propeller Fan Condenser ��9Water-Cooled Performance Data (a) (b) (c) ��10–11

Standard Scroll Compressor ��10Air-Cooled Performance Data (a) (b)��12

Indoor Ducted Condenser – Standard Scroll Compressor(s) ��12

Outdoor Propeller Fan Condenser – Standard Scroll Compressor(s) ��12Air-Cooled Performance Data (a) (b)��13

Indoor Ducted Condenser – Optional Digital Scroll Compressor(s) ��13Air-Cooled Performance Data (a) (b)��14

Outdoor Propeller Fan Condenser – Optional Digital Scroll Compressor(s) ��14Blower Performance Data (a) (b) (c) (d) ��15

OmegaAir - Horizontal / Vertical ��15Blower Performance Data (a) (b) (c) (d) ��16

Indoor Ducted Condenser ��16Hot Water Coil Performance (a) (b) ��17Steam Coil Performance ��17Electrical Data ��18

Cooling Only: ��18Cooling with Electric Heat: ��18

Electrical Data ��19–20Scroll Compressor RLA: ��20Evaporator Motor FLA: ��20Outdoor Propeller Fan Condenser Motor FLA: ��20Digital Scroll Compressor RLA: ��20Indoor Ducted Condenser Motor FLA: ��20

Electrical Heat Data ��21Electrical Data - OmegaAir™ Section (a) (b)��22–24Electrical Data - Air-Cooled Cond� Section (a) (b) (c) ��25–26Electrical Data - Air-Cooled Outdoor Propeller Fan Condenser ��27Water-Cooled Piping Arrangements ��28Dimensions - Vertical ��29Dimensions - Horizontal ��30–31Indoor Ducted Condenser Dimensions��32Indoor Ducted Condenser Sections��33

Optional Air Paths ��33Outdoor Propeller Fan Condenser ��34Service Clearances - Plan View ��35Miscellaneous Application Data ��35OmegaAir Section ��36Basic Model Designation ��36Air-Cooled Indoor Ducted Condenser ��37Basic Model Designation ��37Air-Cooled Outdoor Propeller Fan Condenser ��38Basic Model Designation ��38

Contents

Engineering Guide

OmegaAir™


• Vertical or Horizontal, Water-Cooled Packaged Unit• Vertical or Horizontal, Air-Cooled with Remote Air-Cooled

Condenser Section• 1 – 15 Nominal Tons• 150 to 3000 CFM• R-410a Refrigerant• Functionally run tested at the factory• Vertical Cabinet – galvanized metal with powder coated

finish• Horizontal Cabinet – galvanized metal• 3 Cabinet Sizes• Insulation – 2” Thermal / Acoustic Fiberglass (R-8)• Fits through 32” doorway• Vertical Choice of Discharge Air Path: Top or Straight-

through• Horizontal Choice of Discharge Air Path: Front, Top or

Bottom• Aluminum Fin / Copper Tube Evaporator Coil• Dual-circuited coil utilizing interlaced evaporator coil

circuitry for excellent part load performance (4 to 15 Ton models)

• Reciprocating Compressor (1-Ton)• Heavy Duty Scroll Compressors (2-Ton and larger)• Co-Axial Water-Cooled Condenser w/ 2-Way, 150 psig

Water Regulating Valve(s)• OA3 Microprocessor Controller w/ Wall Mounted Display

and 100’ of Cable (Includes Outdoor Air Temp / Humid Sensor, Supply Air Temp Sensor and Space Temp / Humid Sensor)

• Remote On/Off Terminal Block• Fire / Smoke Detector Terminal Blocks (devices optional)• Front Access to All Components in Vertical configuration• Compressor and all electrical components are located out

of the air stream in a separate compartment for access to these components while the unit is operating

• Fast, Easy Connections for High/Low Voltage, water and condensate removal connections

• High and Low Pressure Switches• Air Flow Proving Switch• Single-point power supply• Modulating Hot Gas Reheat• Split Systems include Resealable (with or without electric

heat) Fittings• Aluminum Fin / Copper Tube Hot Gas Reheat Coil

positioned horizontally (perpendicular to the evaporator coil) in Vertical configuration

• Belt-Drive Blowers with Adjustable Pulleys for ease of Field Adjustment to obtain air balance

• Sealed / Permanently lubricated motor bearings• IAQ Sloped Stainless Steel Drain Pan• Internally Mounted Condensate Trap in Vertical

configuration• MOP Type Thermal Expansion Valves• Filter Driers• High and Low Side Schrader Refrigerant Access Fittings• Hot Gas Bypass on each circuit• 2” Return Air Filter Frame• 2”, MERV 8 Pleated Throwaway Filters

Product Features

The OmegaAir System of 100% outside air units are available as water-cooled packaged units or air-cooled matched with a remote air-cooled condenser section�

Systems are designed for indoor application in Vertical or Horizontal configuration.

Engineering Guide

OmegaAir™


Options

• Digital Scroll Compressor(s)• Hot Water & Steam Coils• Electric Heat w/Single Point Power• Motor Upgrades for High Static Applications• Water Regulating Valves available for 350 psig and/or

3-way applications (shipped loose, field installed)• Electronic Head Pressure Control Valves (shipped loose,

field installed)• Elastomeric Foam Insulation (evaporator section only)• Double Wall Construction• Protective Coil Coating• 4” Filter Frames• MERV 11 and 13 Filters• Condensate Pump (External), 115v required• Non-Fused Disconnect• Unit Mounted Display & Keypad• BMS Serial Communication Board - BACnet™ (MS/TP or

Ethernet), ModBus®, LonWorks®• Firestat• Smoke Detector• Dry Contacts / Terminal Blocks

» Remote Alarm Output » Outdoor Air Damper Open/Close » Outdoor Air Damper End Switch

• Drain Pan Overflow Switch• Phase Relay for indication of Phase Reversal or Loss of

Phase (3-phase units only)• Freezestat• Dirty Filter Switch• Hot Water Coil Valves• Water Entrance on Left (Vertical Configuration)

Air-Cooled Indoor Ducted Condenser Section

• Upgraded Motor• Pillow Block Bearings• Coated Drain Pan• Protective Coil Coating• Painted Cabinet• Outdoor Modification Kit• Acoustic Foam Insulation• Double Wall, Construction• Condenser Filter Rack w/ 2”, Merv 8 Pleated

Throwaway Filters• Sheet Metal/Cabinet Changes• Non-Fused Disconnect• Refrigerant Interconnect Kits

Air-Cooled Outdoor Propeller Fan Condenser

• Multi-Contactor with Fan Cycling Package (low ambient down to 40°F)

• Flooded Condenser Package (low ambient down to 20°F)• Multi-Contactor with Vari-Speed (low ambient down to

20°F)• Refrigerant Interconnect Kits

Engineering Guide

OmegaAir™


Physical Data - OmegaAir™ Section

Tons 1 1-1/2 2 2-1/2 3Evaporator Supply Air (a) CFM Range 134 - 266 167 - 333 237 - 472 284 - 566 334 - 666

Evaporator BlowerSize 7 X 5 7 X 7Qty. 1

Evaporator Motors (b)Std. HP @ 0.25” ESP 1/4Opt. HP @ 1.0” ESP N/A 1/4 (c) N/A 1/2

Evaporator CoilRows 6Face Area (Ft.2) 0.67 0.83 1.18 1.42 1.67FPI 10

Filter

Type Pleated ThrowawayQty 1Size (in.) Vertical – 12 x 24 x 2, Horizontal – 18 x 24 x 2Efficiency MERV 8

CompressorType Recip. ScrollQty 1

Water Regulating Valve (d)Size (in.) 3/8 1/2 3/4Qty 1

Water-Cooled Condenser (e)GPM 3 4.5 6 7.5 9Press. Drop (Ft. H2O) 5.7 6.3 13.3 10.6 8.9

Weight (Net Operating) (f)

Air-Cooled – Vert. 507 510 517 539 552Water-Cooled – Vert. 517 524 534 562 575Air-Cooled – Horiz. 422 425 433 455 467Water-Cooled – Horiz. 432 438 448 476 490

Available Voltages208/230-1-60 • • • • •208/230-3-60 • • • •460-3-60 • • • •

(a) Air flow performance may require other than standard drive components.(b) Motor Size based on 200 CFM/ton with no options� Run selection on UCA Select to verify proper motor size based on actual unit

configuration.(c) Drive set upgrade only�(d) Standard water regulating valve is 2-way, 150 psig. Optional valve configurations available in 3-way and 350 psig. Optional valves

ship loose for field installation.(e) Pressure Drop is for co-axial condenser only and does not include water regulating valve(s)�(f) Net operating weight is for basic unit only� Options will add weight�

Engineering Guide

OmegaAir™



Tons 4 5 6 7 8Evaporator Supply Air (a) CFM Range 445 – 888 567 – 1133 667 - 1333 756 - 1511 977 - 1952

Evaporator BlowerSize 10 X 8Qty 1

Evaporator Motors (b)Std. HP @ 0.25” ESP 1/4 1/3 1/2 3/4 (H), 1/2 (V)Opt. HP @ 1.0” ESP 1/2 3/4 1

Evaporator CoilRows 6Face Area 2.22 2.83 3.33 3.78 4.88FPI 10

Filter


CompressorType ScrollQty 2 (g)

Water Regulating Valve (d)Size (in.) 1/2 3/4Qty 2

Water-Cooled Condenser (e)GPM 12 15 18 21 24Press. Drop (Ft. H2O) 13.1 10.3 8.7 13.6 12.6


Air-Cooled – Vert. 728 769 777 812 851Water-Cooled – Vert. 767 814 828 875 914Air-Cooled – Horiz. 643 669 692 731 766Water-Cooled – Horiz. 692 737 745 782 821

Available Voltages208/230-1-60 • • N/A N/A N/A208/230-3-60 • • • • •460-3-60 • • • • •

(a) Air flow performance may require other than standard drive components(b) Motor Size based on 200 CFM/ton with no options� Run selection on UCA Select to verify proper motor size based on actual unit


ship loose for field installation.(e) Pressure Drop is for co-axial condenser only and does not include water regulating valve(s)�(f) Net operating weight is for basic unit only� Options will add weight�(g) 4 and 5 Ton units with optional digital scroll compressors are available as single circuit only�

Engineering Guide

OmegaAir™



Tons 9 10 11 12 13.5 15Evaporator Supply Air (a) CFM Range 1039 - 2077 1134 - 2266 1334 - 2666 1334 - 2666 1467 - 2933 1800 - 3600

Evaporator BlowerSize 12 X 9Qty 1

Evaporator Motors (b)Std. HP @ 0.25” ESP 1/2 3/4 1 1-1/2Opt. HP @ 1.0” ESP 3/4 1 1-1/2 2

Evaporator CoilRows 6Face Area 5.19 5.67 6.67 6.67 7.33 9.0FPI 10

Filter


CompressorType ScrollQty 2

Water Regulating Valve (d)Size (in.) 1 1-1/4Qty 2

Water-Cooled Condenser (e)GPM 27 30 33 36 40 45Press. Drop (Ft. H2O) 7.7 9.6 13.0 14.9 14.8 17.8


Air-Cooled – Vert. 1062 1104 1116 1126 1157 1256Water-Cooled – Vert. 1137 1179 1208 1218 1273 1372Air-Cooled – Horiz. 877 917 929 941 974 1080Water-Cooled – Horiz. 960 1002 1020 1035 1086 1186

Available Voltages208/230-1-60 N/A N/A N/A N/A N/A N/A208/230-3-60 • • • • • •460-3-60 • • • • • •

(a) Air flow performance may require other than standard drive components.(b) Motor Size based on 200 CFM/ton with no options� Run selection on UCA Select to verify proper motor size based on actual unit


ship loose for field installation.(e) Pressure Drop is for co-axial condenser only and does not include water regulating valve(s)(f) Net operating weight is for basic unit only� Options will add weight�

Engineering Guide

OmegaAir™


Physical Data Air-Cooled Indoor Ducted Condenser

Condenser Model BCSP12 BCSP18 BC2 BC3 BC4G*AS BC5G*ASOmegaAir Tons 1 1-1/2 2 2-1/2, 3 4 (a) 5 (a)

Condenser AirCFM 700 850 1600 2000 2500 3300Std. ESP 0.25”Max. ESP 2.0” 1.7” 2.0” 1.9”

Condenser BlowerSize 7 x 7 12 x 9Qty 1

Condenser Motors (b)Std. HP @ 0.25” ESP 1/2 3/4 1 1-1/2 2Opt. HP @ 1.5” ESP 3/4 3/4 1 1-1/2 2 3

Condenser CoilRows 3 4Face Area 2.6 4.4FPI 14 12

Weight(Net Operating) (d) Air-Cooled 275 285 365 385 550 595

Available Voltages208/230-1-60 • • • • • N/A208/230-3-60 N/A • • • • •460-3-60 N/A • • • • •

Condenser Model BC4G*A BC5G*A BC6 BC8 BC10 BC12 BC15OmegaAir Tons 4 (dual) 5 (dual) 6 7, 8 9, 10 11, 12 13.5, 15

Condenser AirCFM 2500 3300 3800 4250 6000 6000 7500Std. ESP 0.25”Max. ESP 2.0” 1.9” 0.6”

Condenser BlowerSize 15 x 9 15 x 15Qty 1

Condenser Motors (b)Std. HP @ 0.25” ESP 1-1/2 2 3 7-1/2 10Opt. HP @ 1.5” ESP 2 3 5 (c) N/A

Condenser CoilRows 6 8Face Area 6.4 7.3FPI 12

Weight(Net Operating) (d) Air-Cooled 590 650 665 750 795 820 1005

Available Voltages208/230-1-60 • • N/A N/A N/A N/A N/A208/230-3-60 • • • • • • •460-3-60 • • • • • • •

(a) Single circuit condenser is only matched with a single circuit 4 or 5 ton OmegaAir unit with the optional digital scroll compressor�(b) Motor Size based on standard CFM/ton with no options� Run selection on UCA Select to verify proper motor size based on actual

unit configuration.(c) Drive set upgrade only�(d) Net operating weight is for basic unit only� Options will add weight�

Engineering Guide

OmegaAir™


Physical DataAir-Cooled Outdoor Propeller Fan Condenser

Condenser Model PBC2 PBC3 PBC4 PBC5 PBC7 (a) PBC10 (a)OmegaAir Tons 1 1-1/2 2 2-1/2, 3 4 5, 6

Propeller FanQTY. 1 1 2Motor HP 1/3 1/2 eachDiameter (in.) 20 24

Condenser CoilRows 1 2 2 3 3 2Face Area 6.3 11.1 22.2FPI 8 12 8

Weight(Net Operating) (b) Air-Cooled 115 125 135 225 270 400

Available Voltages208/230-1-60 • • • • • (c)208/230-3-60 N/A • • • • •460-3-60 N/A • • • • •

Condenser Model PBC15 PBC18 PBC21 PBC23 PBC28 PBC31OmegaAir Tons 7, 8 9 10, 11 12 13.5 15

Propeller FanQTY. 2 3 4Motor HP 1/2 eachDiameter (in.) 24

Condenser CoilRows 3 2 3Face Area 22.2 33.3 44.4FPI 10 9 8 10 8 10

Weight(Net Operating) (b) Air-Cooled 475 580 650 710 850 935

Available Voltages208/230-1-60 N/A N/A N/A N/A N/A N/A208/230-3-60 • • • • • •460-3-60 • • • • • •

(a) Single and Dual circuits available�(b) Net operating weight is for basic unit only� Options will add weight�(c) Single phase is available only on the 5 Ton OmegaAir unit�

Engineering Guide

OmegaAir™


Water-Cooled Performance Data (a) (b) (c)

Standard Scroll Compressor

Tons CFMEntering Air Temp. (°F) Cooling (Btuh) Leaving Air Temp. (°F)

GPM Leaving Water Temp. (°F)

DB WB Total Sensible DB WB1 220

95 78

17,545 9,700 55.7 55.6 3 98.41-1/2 333 23,360 13,300 59.6 59.1 4.5 97.4

2 350 28,780 15,730 54.6 54.6 6 96.72-1/2 450 36,360 19,790 55.3 55.3 7.5 96.5

3 510 41,980 22,840 54.8 54.8 9 95.94 710 57,971 31,510 55.1 55.1 12 95.95 900 72,530 39,561 55.3 55.3 15 96.66 1000 82,660 44,940 54.5 54.5 18 96.47 1250 99,390 54,480 55.8 55.7 21 96.08 1450 119,420 64,820 54.7 54.6 24 96.89 1550 126,820 69,190 54.8 54.8 27 96.7

10 1750 143,220 78,140 54.9 54.9 30 96.711 2000 160,350 87,780 55.5 55.5 33 96.512 2100 168,840 92,550 55.4 55.4 36 96.1

13.5 2400 191,280 105,010 55.8 55.7 40 96.215 2500 231,760 116,540 54.9 54.9 45 95.9

(a) Capacities are gross values, not adjusted for motor heat(b) Some refrigerant circuit components may impact unit capacities(c) Entering Water Temperature 85° F

Engineering Guide

OmegaAir™


Water-Cooled Performance Data (a) (b) (c)

Digital Scroll Compressor

Tons CFMEntering Air Temp. (°F) Cooling (Btuh) Leaving Air Temp. (°F)

GPM Leaving Water Temp. (°F)

DB WB Total Sensible DB WB

3490

95

78 40,430 21,980 54.6 54.6 9 95.6440 80 40,300 19,650 54.8 54.8 9 95.6

4620 78 50,560 27,600 54.9 54.9 12 94.9550 80 50,130 24,520 54.8 54.8 12 94.9

5850 78 69,490 37,870 54.8 54.8 15 95.9760 80 69,160 33,830 54.9 54.9 15 95.9

6980 78 80,230 43,800 54.8 54.8 18 96.2870 80 79,690 38,920 54.7 54.7 18 96.2

71200 78 98,110 53,480 54.9 54.9 21 95.91070 80 97,550 47,650 54.9 54.9 21 95.9

81475 78 120,840 65,790 54.9 54.9 24 97.01310 80 119,950 58,510 54.8 54.8 24 97.0

91550 78 126,650 69,090 54.8 54.8 27 96.61380 80 125,910 61,570 54.8 54.8 27 96.6

101750 78 143,880 78,210 54.8 54.8 30 96.91560 80 143,090 69,810 54.8 54.8 30 96.8

111940 78 158,650 86,530 54.9 54.9 33 96.51710 80 157,320 76,800 54.7 54.7 33 96.4

122050 78 167,590 91,490 54.9 54.9 36 96.01810 80 166,100 81,340 54.9 54.8 36 95.8

13.52300 78 189,050 102,960 54.9 54.9 40.5 96.12040 80 187,690 91,800 54.9 54.8 40.5 96.1

152570 78 211,860 115,240 54.8 54.8 45 95.82290 80 210,760 102,990 54.9 54.9 45 95.7

(a) Capacities are gross values, not adjusted for motor heat(b) Some refrigerant circuit components may impact unit capacities(c) Entering Water Temperature 85° F

Engineering Guide

OmegaAir™


Indoor Ducted Condenser – Standard Scroll Compressor(s)

OmegaAir Tons

Condenser Model

OmegaAir CFM

Entering Air Temp. (°F) Cooling (Buth) Leaving Air

Temp. (°F) DB WB Total Sensible DB WB

1 BCSP12G*ASTA 200

95 78

14,800 8,450 57.9 57.71-1/2 BCSP18G*ASTA 300 20,010 11,539 60.7 60.4

2 BC2G*ASTA 325 25,060 13,980 56.8 56.82-1/2 BC3G*ASTA 400 31,200 17,330 56.5 56.5

3 BC3G*ASTA 450 35,380 19,440 56.5 56.54 BC4G*ATA 640 50,560 27,980 56.1 56.15 BC5G*ATA 840 64,990 36,020 56.5 56.56 BC6G*ATA 950 75,000 41,230 56.1 56.17 BC8G*ATA 1125 85,860 47,740 57.0 57.08 BC8G*ATA 1300 101,590 55,970 56.3 56.39 BC10G*ATA 1450 114,680 63,090 55.9 55.910 BC10G*ATA 1650 127,870 70,910 56.4 56.411 BC12G*ATA 1750 137,480 75,880 56.1 56.112 BC12G*ATA 1900 144,850 80,670 56.9 56.9

13.5 BC15G*ATA 2250 166,670 93,380 57.7 57.715 BC15G*ATA 2300 181,310 99,940 56.0 56.0

Outdoor Propeller Fan Condenser – Standard Scroll Compressor(s)

OmegaAir Tons

Condenser Model

OmegaAir CFM



1 PBC2G*ASTA 200

95 78

15,380 8,700 56.8 56.61-1/2 PBC3G*ASTA 330 21,700 12,660 60.8 60.3

2 PBC4G*ASTA 340 26,710 14,850 56.2 56.22-1/2 PBC5G*ASTA 440 34,050 18,890 56.5 56.5

3 PBC5G*ASTA 490 38,660 21,370 55.9 55.94 PBC7G*ATA 660 52,110 28,920 56.2 56.25 PBC10G*ATA 890 68,130 37,910 56.8 56.86 PBC10G*ATA 990 77,360 42,960 56.2 56.27 PBC15G*ATA 1230 92,060 51,550 57.4 57.48 PBC15G*ATA 1400 110,040 60,780 56.1 56.19 PBC18G*ATA 1500 115,880 64,270 56.6 56.610 PBC21G*ATA 1750 134,430 74,520 56.7 56.711 PBC21G*ATA 1900 145,750 80,870 56.8 56.812 PBC23G*ATA 2010 153,800 85,620 56.8 56.8

13.5 PBC28G*ATA 2370 176,620 98,460 57.7 57.615 PBC31G*ATA 2450 195,000 107,250 55.7 55.7

Air-Cooled Performance Data (a) (b) (c)

(a) Capacities are gross values, not adjusted for motor heat�(b) Some refrigerant circuit components may impact on unit capacities�(c) Ambient Air Temperature 95°F

Engineering Guide

OmegaAir™


Air-Cooled Performance Data (a) (b)

Indoor Ducted Condenser – Optional Digital Scroll Compressor(s)

OmegaAir Tons

Condenser Model CFM



3 BC3G*ASTA400

95

78 33,160 18,050 54.7 54.6350 80 32,730 15,910 54.4 54.2

4 BC4G*ASTA530 78 43,510 23,830 54.8 54.8470 80 43,030 21,130 54.8 54.8

5 BC5G*ASTA710 78 57,880 31,660 54.9 54.9630 80 57,390 28,330 54.9 54.9

6 BC6G*ATA860 78 70,880 38,680 54.8 54.8760 80 70,190 34710 54.7 54.7

7 BC8G*ATA1000 78 82,890 45,220 54.6 54.6900 80 82,320 40,230 54.7 54.7

8 BC8G*ATA1200 78 99,450 54,090 54.7 54.61070 80 98,710 48,130 54.7 54.6

9 BC10G*ATA1380 78 112,840 61,640 54.9 54.91220 80 111,780 54,690 54.8 54.8

10 BC10G*ATA1550 78 126,190 69,080 54.9 54.91370 80 125,130 61,220 54.8 54.8

11 BC12G*ATA1650 78 135,040 73,620 54.8 54.81470 80 134.070 65,580 54.9 54.9

12 BC12G*ATA1730 78 140,870 77,040 54.9 54.91530 80 139,620 68,650 54.8 54.8

13.5 BC15G*ATA1960 78 159,880 87,480 54.9 54.91740 80 158,920 77,850 54.9 54.9

15 BC15G*ATA2180 78 177,280 96,820 54.9 54.91930 80 176,190 86,180 54.9 54.9

(a) Capacities are gross values, not adjusted for motor heat�(b) Some refrigerant circuit components may impact on unit capacities�(c) Ambient Air Temperature 95°F

Engineering Guide

OmegaAir™


Air-Cooled Performance Data (a) (b) (c)

Outdoor Propeller Fan Condenser – Optional Digital Scroll Compressor(s)

OmegaAir Tons

Condenser Model CFM



3 PBC5G*ASTA450

95

78 36,760 20,130 54.9 54.9400 80 36,510 17,860 54.9 54.9

4 PBC7G*ASTA550 78 45,090 24,630 54.8 54.8490 80 44,710 21,860 54.9 54.9

5 PBC10G*ASTA780 78 63,550 34,690 54.9 54.9690 80 62,980 30,770 54.8 54.8

6 PBC10G*ATA900 78 73,470 40,320 54.9 54.9800 80 72,980 35,770 55.0 55.0

7 PBC15G*ATA1090 78 88,930 48,730 54.9 54.9960 80 88,180 43,050 54.7 54.7

8 PBC15G*ATA1330 78 108,760 59,480 54.9 54.91170 80 107,620 52,580 54.7 54.7

9 PBC18G*ATA1380 78 112,860 61,590 55.0 55.01220 80 111,840 54,600 54.9 54.9

10 PBC21G*ATA1610 78 131,940 71,970 54.8 54.81430 80 131,030 63,970 54.8 54.8

11 PBC21G*ATA1730 78 141,870 77,410 54.8 54.81540 80 140,930 68,900 54.9 54.9

12 PBC23G*ATA1830 78 149,600 81,840 54.9 54.91630 80 148,810 72,910 54.9 54.9

13.5 PBC28G*ATA2070 78 169,070 92,450 54.9 54.91830 80 167,950 82,170 54.8 54.8

15 PBC31G*ATA2340 78 191,150 104,230 54.9 54.92070 80 189,730 92,580 54.9 54.9

(a) Capacities are gross values, not adjusted for motor heat�(b) Some refrigerant circuit components may impact on unit capacities�(c) Ambient Air Temperature 95°F�

Engineering Guide

OmegaAir™


Blower Performance Data (a)

(a) Blower performance of basic unit with 2”, MERV 8 pleated filter and wet coil 95 / 78. Run selection on UCA Select to verify proper motor size based on actual unit configuration.

OmegaAir - Horizontal / Vertical

Tons CFMExternal Static Pressure (ESP)

0.25” 0.50” 0.75” 1.00” 1.25” 1.5” 1.75” 2.0”HP

1 200 1/4 1/4 - - - - - - - - - - - - - - - - - -1-1/2 300 1/4 1/4 1/4 1/4 1/4 1/4 1/4 - - -

2 400 1/4 1/4 1/4 1/4 1/4 1/4 1/3 1/32-1/2 500 1/4 1/4 1/3 - - - - - - - - - - - - - - -

3 600 1/4 1/4 1/3 1/2 - - - - - - - - - - - -4 800 1/4 1/4 1/3 1/2 1/2 1/2 3/4 3/45 1000 1/4 1/3 1/2 1/2 3/4 3/4 3/4 3/46 1200 1/3 1/2 1/2 3/4 3/4 3/4 1 17 1400 1/2 1/2 3/4 3/4 1 1 1 1-1/28 1600 1/2 3/4 3/4 1 1 1-1/2 1-1/2 1-1/29 1800 1/2 3/4 3/4 3/4 1 1 1-1/2 1-1/210 2000 3/4 3/4 3/4 1 1 1-1/2 1-1/2 1-1/211 2200 3/4 3/4 1 1 1-1/2 1-1/2 1-1/2 1-1/212 2400 3/4 1 1-1/2 1-1/2 1-1/2 1-1/2 2 2

13.5 2700 1 1-1/2 1-1/2 1-1/2 2 2 2 315 3000 1-1/2 1-1/2 1-1/2 2 2 2 3 3

Engineering Guide

OmegaAir™


Blower Performance Data (a)

(a) Blower performance of basic unit. Run selection on UCA Select to verify proper motor size based on actual unit configuration.

Indoor Ducted Condenser

Tons CFMExternal Static Pressure (ESP)

0.25” 0.50” 0.75” 1.00” 1.25” 1.5” 1.75” 2.0”HP

BCSP12 700 1/2 1/2 1/2 1/2 1/2 3/4 3/4 3/4BCSP18 850 1/2 1/2 1/2 1/2 3/4 3/4 1 1

BC2 1600 3/4 3/4 3/4 3/4 3/4 1 1 1BC3 2000 1 1 1 1 1 1.5 1.5 1.5

BC4G*A (dual) 2500 1-1/2 1-1/2 1-1/2 1-1/2 1-1/2 2 2 2BC5G*A (dual) 3300 2 2 2 2 3 3 3 3

BC6 3800 3 3 3 3 3 5 5 5BC8 4250 3 3 5 5 5 5 5 5

BC10 6000 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 n/aBC12 6000 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 n/aBC15 7500 10 10 n/a n/a n/a n/a n/a n/a

BC4G*AS 2500 1-1/2 1-1/2 1-1/2 1-1/2 2 2 2 2BC5G*AS 3300 2 2 3 3 3 3 3 - - -

Engineering Guide

OmegaAir™


Contact the factory for hot water coil performance that will be specific for your application. Please provide:• Entering water temperature• Desired / Approximate leaving water temperature (typically a 20° difference)• Entering air temperature• Fluid type• Indicate if Optional Hot Water Valve is to be factory supplied� Valves are spring return, On / Off operation only�

Contact the factory for steam coil performance that will be specific for your application. Steam coils are suitable for 10 psi or less steam pressure. Steam valves and components are by others, field installed.

Hot Water Coil Performance (a) (b)

Steam Coil Performance

Engineering Guide

OmegaAir™


Electrical Data

The following sections provide the formulas and the data to calculate the Minimum Circuit Ampacity (MCA) and the Maximum Overcurrent Protection (MOP) for a variety of unit configurations. The formulas refer to the largest motor amps� Typically this is the compressor (RLA) but it can also

be one of the blower motors (FLA)� Please note that the UCA Select software program is also available to calculate electrical data and provide unit submittals, drawing reports and pricing information�

Cooling Only:

NOTE: Largest motor amps may not always be the compressor�MCA = (1�25 x largest motor amps) + the sum of the remaining motor amps MOP = (2�25 x largest motor amps) + the sum of the remaining motor ampsNote: Round calculated MOP value down to the nearest 5 amp increment�

Packaged OmegaAir Unit - Water-Cooled (can be single or dual compressor)EXAMPLE 1: EXAMPLE 2:2 Ton Water-cooled, 208/230-3-60 6 Ton Water-cooled, 460-3-60Single Compressor RLA = 8�3 Dual Compressors RLA = 6�0 eachEvap Blwr� Motor (1/4 HP) FLA = 1�3 Evap Blwr� Motor (3/4 HP) FLA = 1�5MCA = (1�25 x 8�3) + 1�3 = 11�7 MCA = (1�25 x 6�0) + 6�0 + 1�5 = 15�0MOP = (2�25 x 8�3) + 1�3 = 19�98 calculated MOP = (2�25 x 6�0) + 6�0 + 1�3 = 20�8 calculatedMOP = 15 (rounded down to nearest 5) MOP = 20 (rounded down to nearest 5)

Split-system OmegaAir, matched w/ Indoor Ducted Air-Cooled Condenser (can be single or dual compressor)

EXAMPLE 3:8 Ton OmegaAir, 208/230-3-60 8 Ton Indoor Ducted Condenser, 208/230-3-60Dual Compressors RLA = 16�0 each Cond Blwr� Motor (3 HP) FLA = 8�8 Evap Blwr� Motor (1 HP) FLA = 4�0MCA = (1�25 x 16�0) + 16�0 + 4�0 = 40�0 MCA = (1�25 x 8�8) = 11�0MOP = (2�25 x 16�0) + 16�0 + 4�0 = 56�0 calculated MOP = (2�25 x 8�8) = 19�8 calculatedMOP = 55 (rounded down to nearest 5) MOP = 15 (rounded down to nearest 5)

Cooling with Electric Heat:On equipment with multiple modes of operation (i�e� cooling and heating), each mode must be evaluated and whichever load condition provides the highest value shall be used�NOTE: Largest motor amps may not always be the compressor�

Use the larger of the following:MCAclg = (1�25 x largest motor amps) + the sum of the remaining motor ampsMCAhtg = 1�25 x (heater amps + evap motor FLA)

MOPclg = (2�25 x largest motor amps) + the sum of the remaining motor ampsMOPhtg = (2�25 x evap motor FLA) + heater amps

Note: Round calculated MOP value down to the nearest 5 amp increment� MOP must be greater than MCA� If the rounded MOP is less than the MCA, then the MOP is equal to the MCA value rounded UP to the next 5 amp increment�

Engineering Guide

OmegaAir™


Electrical Data

Packaged OmegaAir - Water-Cooled w/ Electric Heat (can be single or dual compressor)EXAMPLE 4:2 Ton Water-cooled, 208/230-3-60Single Compressor RLA = 8�3Evap Blwr� Motor (1/4 HP) FLA = 1�35 kW Electric Heat (heat only) = 13�1 amps

MCAclg = (1�25 x 8�3) + 1�3 = 11�7MCAhtg = 1�25 x (13�1 x 1�3) = 18�0MCA = 18�0MOPclg = (2�25 x 8�3) + 1�3 = 19�98 calculated, 15 (rounded down to nearest 5)MOPhtg = (2�25 x 1�3) + 13�1 = 16�0 calculated, 15 (rounded down to nearest 5)MOP = 20

Note: MOP must be greater than MCA� The cooling and heating rounded MOP’s are less than the MCA� MOP is then determined by rounding up the MCA to nearest 5 amp increment above the MCA�

Split-system OmegaAir w/ Electric Heat, matched w/ Indoor Ducted Air-Cooled Condenser (can be single or dual compressor)

EXAMPLE 5:8 Ton OmegaAir, 208/230-3-60 8 Ton Indoor Ducted Condenser, 208/230-3-60Dual Compressors RLA = 16�0 each Cond Blwr� Motor (3 HP) FLA = 8�8Evap Blwr� Motor (1 HP) FLA = 4�0 MCA = (1�25 x 8�8) = 11�020 kW Electric Heat (heat only) = 52�5 amps MOP = (2�25 x 8�8) = 19�8 calculatedMCAclg = (1�25 x 16�0) + 16�0 + 4�0 = 40�0 MOP = 15 (rounded down to nearest 5)MCAhtg = 1�25 x (4�0 + 52�5) = 70�6 MCA = 70�6MOPclg = (2�25 x 16�0) + 16�0 + 4�0 = 56�0 calculated, 55 (rounded down to nearest 5)MOPhtg = (2�25 x 4�0) + 52�5 = 61�5 calculated, 60 (rounded down to nearest 5)MOP = 75

Note: MOP must be greater than MCA� The cooling and heating rounded MOP’s are less than the MCA� MOP is then determined by rounding up the MCA to nearest 5 amp increment above the MCA�

Engineering Guide

OmegaAir™


Scroll Compressor RLA:

OmegaAir Tons

Compressor (Qty) 208/230-1-60 208/230-3-60 460-3-60

1 1 (Recip) 5.9 n/a n/a1-1/2 1 13.5 7.1 3.5

2 1 12.8 8.3 5.12-1/2 1 16.7 10.4 5.8

3 1 17.9 13.5 6.04 2 12.8 ea. 8.3 ea. 5.1 ea.5 2 16.7 ea. 10.4 ea. 5.8 ea.6 2 - - - 13.5 ea. 6.0 ea.7 2 - - - 13.7 ea. 6.2 ea.8 2 - - - 16.0 ea. 7.8 ea.9 2 - - - 15.6 ea. 7.8 ea.10 2 - - - 19.0 ea. 9.7 ea.11 2 - - - 22.4 ea. 10.6 ea.12 2 - - - 23.2 ea. 11.2 ea.

13.5 2 - - - 25.0 ea. 12.2 ea.15 2 - - - 29.5 ea. 14.7 ea.

Digital Scroll Compressor RLA:

OmegaAir Tons

Compressor (Qty) 208/230-1-60 208/230-3-60 460-3-60

3 1 18.5 11.7 6.24 1 20.2 16.1 7.85 1 n/a 20.4 9.76 2 - - - 11.7 ea. 6.2 ea.7 2 - - - 16.1 ea. 7.8 ea.8 2 - - -. 17.9 ea. 7.8 ea.9 2 - - - 16.9 ea. 8.1 ea.

10 2 - - -. 20.4 ea. 9.7 ea.11 2 - - - n/a 9.5 ea.12 2 - - - 23.2 ea. 11.2 ea.

13.5 2 - - - 24.0 ea. 12.6 ea.15 2 - - - 27.6 ea. 12.8 ea.

Evaporator Motor FLA:

HP 208/230-1-60 208/230-3-60 460-3-601/4 2.5 1.3 0.651/3 3.2 1.6 0.801/2 4.5 2.4 1.23/4 5.8 3.0 1.51 6.3 4.0 2.0

1-1/2 7.8 5.6 2.82 11.3 6.2 3.13 - - - 9.2 4.35 - - - 13.6 6.3

Outdoor Propeller Fan Condenser Motor FLA:HP Used In Models Fan Qty 208/230-1-60 208/230-3-60 460-3-601/3 PBC2 – PBC5 1 1.9 2.8 1.01/2 PBC6 – PBC7 1 3.6 2.8 1.21/2 PBC10 – PBC15 2 3.6 ea. (a) 2.8 ea. 1.2 ea.1/2 PBC18 – PBC23 3 - - - 2.8 ea. 1.2 ea.1/2 PBC28 – PBC31 4 - - - 2.8 ea. 1.2 ea.

Electrical Data

Indoor Ducted Condenser Motor FLA:

HP 208/230-1-60 208/230-3-60 460-3-601/2 3.8 2.2 1.33/4 5.8 3.2 1.51 7.0 3.4 1.6

1-1/2 9.4 5.0 2.42 13.7 6.5 3.13 18.0 8.8 4.25 - - - 13.5 6.5

7.5 - - - 18.0 9.010 - - - 28.0 14.0

(a) Single phase is only available on PBC10�

Engineering Guide

OmegaAir™


Electrical Heat Data (a) (b) (c) (d)

NominalkW OmegaAir Tons

Electric Heat Amps208/230-1-60 208/230-3-60 460-3-60

2 1, 1.5, 2, 2.5 9.1 5.3 2.53 1, 1.5, 2, 2.5, 3, 4 13.6 7.9 3.85 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7 22.7 13.1 6.36 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7 27.3 15.8 7.5

7.5 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10 34.1 19.7 9.410 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13.5 45.5 26.2 12.6

12.5 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13.5, 15 - - - 32.8 15.715 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13.5, 15 - - - 39.4 18.820 4, 5, 6, 7, 8, 9, 10, 11, 12, 13.5, 15 - - - 52.5 25.125 5, 6, 7, 8, 9, 10, 11, 12, 13.5, 15 - - - 65.6 31.430 6, 7, 8, 9, 10, 11, 12, 13.5, 15 - - - 78.7 37.735 7, 8, 9, 10, 11, 12, 13.5, 15 - - - 91.9 43.940 8, 9, 10, 11, 12, 13.5, 15 - - - 105 50.245 8, 9, 10, 11, 12, 13.5, 15 - - - 118.1 56.550 9, 10, 11, 12, 13.5, 15 - - - 131.2 62.855 10, 11, 12, 13.5, 15 - - - 144.3 6960 11, 12, 13.5, 15 - - - 157.5 75.365 13.5, 15 - - - 170.6 81.670 15 - - - 183.7 87.9

(a) Open Wire Electric Heaters come with SCR Controller, as standard�(b) Heaters are nominally rated (kW) at 220 or 460 volts� Amps listed at 220 or 460 volts�(c) All size heaters are installed in Extended Filter Box and available for Heat Only (not reheat)�(d) Unit has single point power with electric heat�

Engineering Guide

OmegaAir™


Tons Model Voltage CompressorRLA

Evaporator Motor Unit Electric Heat Unit w/ Electric Heat

HP FLA MCA MOP KW Amps MCA MOP1 OS*‡1G1ASFTA 208/230-1-60 5.9 1/4 2.5 9.9 15 5 22.7 31.5 35

1-1/2OS*‡1.5G1ASFTA 208/230-1-60 13.5 1/4 2.5 19.4 30 7.5 34.1 45.8 50OS*‡1.5G3ASFTA 208/230-3-60 7.1 1/4 1.3 10.2 15 7.5 19.7 26.3 30OS*‡1.5G4ASFTA 460-3-60 3.5 1/4 0.65 5.0 10 7.5 9.4 12.6 15

2

OS*‡2G1ASFTA 208/230-1-60 12.81/4 2.5 18.5 30 10 45.5 60.0 651/3 3.2 19.2 30 10 45.5 60.9 65

OS*‡2G3ASFTA 208/230-3-60 8.31/4 1.3 11.7 15 10 26.2 34.4 351/3 1.6 12.0 20 10 26.2 34.8 35

OS*‡2G4ASFTA 460-3-60 5.11/4 0.65 7.0 10 10 12.6 16.6 201/3 0.80 7.2 10 10 12.6 16.8 20

2-1/2

OS*‡2.5G1ASFTA 208/230-1-60 16.71/4 2.5 23.4 40 10 45.5 60.0 651/3 3.2 24.1 40 10 45.5 60.9 65

OS*‡2.5G3ASFTA 208/230-3-60 10.41/4 1.3 14.3 20 10 26.2 34.4 351/3 1.6 14.6 25 10 26.2 34.8 35

OS*‡2.5G4ASFTA 460-3-60 5.81/4 0.65 7.9 10 10 12.6 16.6 201/3 0.80 8.1 10 10 12.6 16.8 20

3

OS*‡3G1ASFTA 208/230-1-60 17.91/4 2.5 24.9 40 10 45.5 60.0 651/3 3.2 25.6 40 10 45.5 60.9 651/2 3.6 26.0 40 10 45.5 62.5 65

OS*‡3G3ASFTA 208/230-3-60 13.51/4 1.3 18.2 30 15 39.4 50.9 551/3 1.6 18.5 30 15 39.4 51.3 551/2 2.4 19.3 30 15 39.4 52.3 55

OS*‡3G4ASFTA 460-3-60 6.01/4 0.65 8.2 10 15 18.8 24.3 251/3 0.80 8.3 10 15 18.8 24.5 251/2 1.2 8.7 10 15 18.8 25.0 30

(a) Use Copper Conductors Only�(b) Values listed are typical and may vary dependent upon components utilized�* Either Water-Cooled (W) or Air-Cooled (A)‡ Either Vertical (V) or Horizontal (H)

Electrical Data - OmegaAir™ Section (a) (b)

Engineering Guide

OmegaAir™


Tons Models Voltage CompressorRLA


HP FLA MCA MOP KW Amps MCA MOP

4

OS*‡4G1AFTA 208/230-1-60 12.8 ea.1/4 3.2 32.0 40 10 45.5 60.0 651/3 3.6 32.4 45 10 45.5 60.9 651/2 5.3 34.1 45 10 45.5 62.5 65

OS*‡4G3AFTA 208/230-3-60 8.3 ea.1/4 1.6 20.3 25 20 52.5 67.3 701/3 2.4 21.1 25 20 52.5 67.6 701/2 2.8 21.5 25 20 52.5 68.6 70

OS*‡4G4AFTA 460-3-60 5.1 ea.1/4 0.8 12.3 15 20 25.1 32.2 351/3 1.2 12.7 15 20 25.1 32.4 351/2 1.4 12.9 15 20 25.1 32.9 35

5

OS*‡5G1AFTA 208/230-1-60 16.7 ea.1/3 3.2 40.8 55 10 45.5 60.9 651/2 3.6 41.2 55 10 45.5 62.5 653/4 5.3 42.9 55 10 45.5 64.1 65

OS*‡5G3AFTA 208/230-3-60 10.4 ea.1/3 1.6 25.0 35 25 65.6 84.0 851/2 2.4 25.8 35 25 65.6 85.0 903/4 2.8 26.2 35 25 65.6 85.8 90

OS*‡5G4AFTA 460-3-60 5.8 ea.1/3 0.8 13.9 15 25 31.4 40.3 451/2 1.2 14.3 20 25 31.4 40.8 453/4 1.4 14.5 20 25 31.4 41.1 45

6

OS*‡6G3AFTA 208/230-3-60 13.5 ea.1/3 1.6 32.0 45 30 78.7 100.4 1051/2 2.4 32.8 45 30 78.7 101.4 1053/4 2.8 33.2 45 30 78.7 102.1 105

OS*‡6G4AFTA 460-3-60 6.0 ea.1/3 0.8 14.3 20 30 37.7 48.1 501/2 1.2 14.7 20 30 37.7 48.6 503/4 1.4 14.9 20 30 37.7 49.0 50

7

OS*‡7G3AFTA 208/230-3-60 13.7 ea.1/2 2.4 33.2 45 35 91.9 117.9 1203/4 2.8 33.6 45 35 91.9 118.6 1201 3.6 34.4 45 35 91.9 119.9 120

OS*‡7G4AFTA 460-3-60 6.2 ea.1/2 1.2 15.2 20 30 43.9 56.4 603/4 1.4 15.4 20 30 43.9 56.8 601 1.8 15.8 20 30 43.9 57.4 60

8

OS*‡8G3AFTA 208/230-3-60 16.0 ea.1/2 2.4 38.4 50 35 91.9 117.9 1203/4 2.8 38.8 50 35 91.9 118.6 1201 3.6 39.6 55 35 91.9 119.9 120

OS*‡8G4AFTA 460-3-60 7.8 ea.1/2 1.2 18.8 25 35 43.9 56.4 603/4 1.4 19.0 25 35 43.9 56.8 601 1.8 19.4 25 35 43.9 57.4 60


(a) Use Copper Conductors Only�(b) Values listed are typical and may vary dependent upon components utilized�* Either Water-Cooled or Air-Cooled‡ Either Vertical (V) or Horizontal (H)

Engineering Guide

OmegaAir™


Tons Models Voltage CompressorRLA


HP FLA MCA MOP KW Amps MCA MOP

9

OS*‡9G3AFTA 208/230-3-60 15.6 ea.1/2 2.4 37.5 50 45 118.1 150.6 1553/4 2.8 37.9 50 45 118.1 151.4 1551 3.6 38.7 50 45 118.1 152.6 155

OS*‡9G4AFTA 460-3-60 7.8 ea.1/2 1.2 18.8 25 45 56.5 72.1 753/4 1.4 19.0 25 45 56.5 72.5 751 1.8 19.4 25 45 56.6 73.1 75

10

OS*‡10G3AFTA 208/230-3-60 19.0 ea.3/4 2.8 45.6 60 50 131.2 167.8 1701 3.6 46.4 65 50 131.2 169.0 170

1.5 4.8 47.6 65 50 131.2 171.0 175

OS*‡10G4AFTA 460-3-60 9.7 ea.3/4 1.4 23.2 30 50 62.8 80.4 851 1.8 23.6 30 50 62.8 81.0 85

1.5 2.4 24.2 30 50 62.8 82.0 85

11

OS*‡11G3AFTA 208/230-3-60 22.4 ea.3/4 2.8 53.2 75 55 144.3 184.1 1851 3.6 54.0 75 55 144.3 185.4 190

1.5 4.8 55.2 75 55 144.3 187.4 190

OS*‡11G4AFTA 460-3-60 10.6 ea.3/4 1.4 25.3 35 55 69.0 88.1 901 1.8 25.7 35 55 69.0 88.8 90

1.5 2.4 26.3 35 55 69.0 89.8 90

12OS*‡12G3AFTA 208/230-3-60 23.2 ea.

1 3.6 55.8 75 60 157.5 201.9 2051.5 4.8 57.0 80 60 157.5 203.9 205

OS*‡12G4AFTA 460-3-60 11.2 ea.1 1.8 27.0 35 60 75.3 96.6 100

1.5 2.4 27.6 35 60 75.3 97.6 100

13.5OS*‡13.5G3AFTA 208/230-3-60 25.0 ea.

1.5 4.8 61.1 85 65 170.6 220.3 2252 6.2 62.5 85 65 170.6 221.0 225

OS*‡13.5G4AFTA 460-3-60 12.2 ea.1.5 2.4 29.9 40 65 81.6 105.5 1102 3.1 30.6 40 65 81.6 105.9 110

15OS*‡15G3AFTA 208/230-3-60 29.5 ea.

1.5 4.8 71.2 100 70 183.7 236.6 2402 6.2 72.6 100 70 183.7 237.4 240

OS*‡15G4AFTA 460-3-60 14.7 ea.1.5 2.4 35.5 50 70 87.9 113.4 1152 3.1 36.2 50 70 87.9 113.8 115


(a) Use Copper Conductors Only�(b) Values listed are typical and may vary dependent upon components utilized�* Either Water-Cooled (W) or Air-Cooled (A)‡ Either Vertical (V) or Horizontal (H)

Engineering Guide

OmegaAir™


OmegaAir Tons Model Voltage Condenser Motor Unit HP FLA MCA MOP

1

BCSP12G1ASTA 208/230-1-60 1/2 3.8 4.8 53/4 5.8 7.3 10

BCSP12G3ASTA 208/230-3-60 1/2 2.2 2.8 53/4 3.2 4.0 5

BCSP12G4ASTA 460-3-60 1/2 1.3 1.6 53/4 1.5 1.9 5

1-1/2

BCSP18G1ASTA 208/230-1-60 1/2 3.8 4.8 53/4 5.8 7.3 10

BCSP18G3ASTA 208/230-3-60 1/2 2.2 2.8 53/4 3.2 4.0 5

BCSP18G4ASTA 460-3-60 1/2 1.3 1.6 53/4 1.5 1.9 5

2

BC2G1ASTA 208/230-1-60 3/4 5.8 7.3 101 7.0 8.8 15

BC2G3ASTA 208/230-3-60 3/4 3.2 4.0 51 3.4 4.3 5

BC2G4ASTA 460-3-60 3/4 1.5 1.9 51 1.6 2.0 5

3

BC3G1ASTA 208/230-1-60 1 7.0 8.8 151.5 9.4 11.8 20

BC3G3ASTA 208/230-3-60 1 3.4 4.3 51.5 5.0 6.3 10

BC3G4ASTA 460-3-60 1 1.6 2.0 51.5 2.4 3.0 5

4 (single)

BC4G1ASTA 208/230-1-60 1.5 9.4 11.8 202 13.7 17.1 30

BC4G3ASTA 208/230-3-60 1.5 5.0 6.3 102 6.5 8.1 10

BC4G4ASTA 460-3-60 1.5 2.4 3.0 52 3.1 3.9 5

4 (dual)

BC4G1ATA 208/230-1-60 1.5 9.4 11.8 202 13.7 17.1 30

BC4G3ATA 208/230-3-60 1.5 5.0 6.3 102 6.5 8.1 10

BC4G4ATA 460-3-60 1.5 2.4 3.0 52 3.1 3.9 5

5 (single)

BC5G1ASTA 208/230-1-60 2 13.7 17.1 303 18.0 22.5 40

BC5G3ASTA 208/230-3-60 2 6.5 8.1 103 8.8 11.0 15

BC5G4ASTA 460-3-60 2 3.1 3.9 53 4.2 5.3 10

5 (dual)

BC5G1ATA 208/230-1-60 2 13.7 17.1 303 18.0 22.5 40

BC5G3ATA 208/230-3-60 2 6.5 8.1 103 8.8 11.0 15

BC5G4ATA 460-3-60 2 3.1 3.9 53 4.2 5.3 10

(a) Use Copper Conductors Only�(b) Values listed are typical and may vary dependent upon components utilized�(c) All motors 1725 RPM. Motors ≤ 5 HP inherently protected.

Electrical Data - Air-Cooled Condenser Section (a) (b) (c)

Engineering Guide

OmegaAir™


OmegaAir Tons Model VoltageCondenser Motor Unit

HP FLA MCA MOP

6BC6G3ATA 208/230-3-60

3 8.8 11.0 155 13.5 16.9 30

BC6G4ATA 460-3-603 4.2 5.3 105 6.5 8.1 10

8BC8G3ATA 208/230-3-60

3 8.8 11.0 155 13.5 16.9 30

BC8G4ATA 460-3-603 4.2 5.3 105 6.5 8.1 10

10 BC10G3ATA 208/230-3-60 7.5 18.0 22.5 40BC10G4ATA 460-3-60 7.5 9.0 11.3 20

12 BC12G3ATA 208/230-3-60 7.5 18.0 22.5 40BC12G4ATA 460-3-60 7.5 9.0 11.3 20

15 BC15G3ATA 208/230-3-60 10 28.0 35.0 60BC15G4ATA 460-3-60 10 14.0 17.5 30

(a) Use Copper Conductors Only�(b) Values listed are typical and may vary dependent upon components utilized�(c) No motor upgrade� Drive set upgrade only�(d) All motors 1725 RPM. Motors ≤ 5 HP inherently protected. All 7.5 & 10 HP 1725 RPM with external overloads.

Electrical Data - Air-Cooled Condenser Section (a) (b) (c)

Engineering Guide

OmegaAir™


(a) Single Phase motors on unit are wired for 3 phase operation�(b) Single phase is available for 5 ton system only�

Electrical Data - Air-Cooled Outdoor Propeller Fan Condenser

OmegaAirTons

CondenserModel

FanQty Voltage

Condenser Motor UnitHP FLA MCA MOP

1PBC2G1ASTA

1208/230-1-60

1/31.9 2.4 15

PBC2G3ASTA 208/230-3-60 (a) 1.9 2.4 15PBC2G4ASTA 460-3-60 (a) 1 1.3 15

1.5PBC3G1ASTA

1208/230-1-60

1/31.9 2.4 15


2PBC4G1ASTA

1208/230-1-60

1/31.9 2.4 15


2.5, 3PBC5G1ASTA

1208/230-1-60

1/31.9 2.4 15


4 (single)PBC7G1ASTA

1208/230-1-60

1/23.6 4.5 15

PBC7G3ASTA 208/230-3-60 2.8 3.5 15PBC7G4ASTA 460-3-60 1.2 1.5 15

4 (dual)PBC7G1ATA

1208/230-1-60

1/23.6 4.5 15

PBC7G3ATA 208/230-3-60 2.8 3.5 15PBC7G4ATA 460-3-60 1.2 1.5 15

5 (single)PBC10G1ASTA

2208/230-1-60

1/2 ea3.6 ea 8.1 15

PBC10G3ASTA 208/230-3-60 2.8 ea 6.3 15PBC10G4ASTA 460-3-60 1.2 ea 2.7 15

5 (dual), 6PBC10G1ATA

2208/230-1-60 (b)

1/2 ea3.6 ea 8.1 15

PBC10G3ATA 208/230-3-60 2.8 ea 6.3 15PBC10G4ATA 460-3-60 1.2 ea 2.7 15

7, 8PBC15G3ATA

2208/230-3-60

1/2 ea2.8 ea 6.3 15

PBC15G4ATA 460-3-60 1.2 ea 2.7 15

9PBC18G3ATA

3208/230-3-60

1/2 ea2.8 ea 9.1 15

PBC18G4ATA 460-3-60 1.2 ea 3.9 15

10, 11PBC21G3ATA

3208/230-3-60

1/2 ea2.8 ea 9.1 15

PBC21G4ATA 460-3-60 1.2 ea 3.9 15

12PBC23G3ATA

3208/230-3-60

1/2 ea2.8 ea 9.1 15

PBC23G4ATA 460-3-60 1.2 ea 3.9 15

13.5PBC28G3ATA

4208/230-3-60

1/2 ea2.8 ea 11.2 15

PBC28G4ATA 460-3-60 1.2 ea 5.1 15

15PBC31G3ATA

4208/230-3-60

1/2 ea2.8 ea 11.2 15

PBC31G4ATA 460-3-60 1.2 ea 5.1 15

Engineering Guide

OmegaAir™


2-Way Single Circuit

2-Way Valve 2-Way Valve

2-Way Valve

2-Way Valve

2-Way Valve

3-Way Valve

2-Way Valve

2-Way Valve

3-Way Valve

Condensing Coil Condensing Coil

Condensing Coil

Condensing Coil

Condensing Coil

Condensing Coil

Condensing Coil

Condensing Coil

Condensing Coil

Water In

Water Out

Water In

N.O. Solenoid Valve

Water Out

Water In

N.O. Solenoid Valve

Water Out

Water In

Water Out

Water In

Water Out

Water In

Water Out

3-Way Single Circuit

2-Way Dual Circuit

3-Way Dual Circuit

2-Way Single Circuit with Bypass

2-Way Dual Circuit with Bypass

Water ConnectionsTons Female Pipe Thread (FPT)

1 thru 4 3/4”5 thru 8 1”9 thru 12 1-1/4”13.5 & 15 1-1/2”

Notes:1� Standard valves are 2-way, 150 psig Water Reg Valves�2� Optional valves:

a� 2-way, 350 psig WRVb� 3-way, 150 psig WRVc� 3-way, 350 psig WRVd� 2-way, w/ N�O� solenoid bypass valve (150 psig only),

2-way valve in lieu of 3-way WRVe� Electronic Head Pressure Control Valves: 2-Way & 3-Way, 350 psig�

3� 3-way valve is placed only on lead circuit of dual-circuit units�4� Water-cooled units are designed for 85° F EWT� If water

temperature is below 75° or over 95°, contact factory�5� Nominal 3 GPM / Ton�6� UCA select software is also available to verify performance at a range of

conditions�7� Valve settings have head pressure set at 235 psi�8� Standard heat exchangers are counter flow co-axial type.9� United CoolAir uses propylene glycol when testing all water-cooled units�

When shipped, the water circuit may still have a little glycol inside� The water circuit should be flushed with water at the job site before being hooked up to the actual loop�

Water-Cooled Piping Arrangements

Engineering Guide

OmegaAir™


Tons A B C D* E F G H I J K1 - 3 31 31-5/8 12-1/2 5 or 7 52-1/2 8-1/2 42 64 9-1/2 24-3/4 20-1/8

4 - 8 31 29-1/4 20 5 or 7 57-7/8 11-3/8 48 72 10-1/2 39-1/8 16-1/2

9 - 15 31 26-7/8 25 5 or 7 61-1/2 13-5/8 72 78 12-7/16 51-1/8 15-1/16

Not To Scale

Dimensions - Vertical

*Extended filter rack to 18 or 20 inches with optional heat

Engineering Guide

OmegaAir™


Tons A B C D E F* G H I J K1 - 3 45 57 43 23-7/8 17-13/16 5 or 7 61 8-11/16 26 9-3/4 41

4 - 8 54 61 52 39-1/2 24 5 or 7 65 11-9/16 26 10-5/8 50

Dimensions - Horizontal

Not To Scale

Tons A B C D E F G H I J K

1 - 3 45 49 43 23-7/8 17-13/16 5 53 8-11/16 22 9-3/4 41

4 - 8 54 57 52 39-1/2 24 5 61 11-9/16 26 10-5/8 50

“B” Air Path

Bottom raeR tfeL

A

B

C D E

F G

H

I

J

K

“F” Air Path

Rear

I

K

Left

E

F G

H

A

B

C D

Top

J

“T” Air Path

A

B

C D

Top

J

Left

E

F G

Rear

I

K H

Not To Scale

“B” Air Path (Rear Inlet and Bottom Supply)

“F” Air Path (Rear Inlet and Front Supply)

“T” Air Path (Rear Inlet and Top Supply)


Engineering Guide

OmegaAir™


Tons A B C D E F* G H I J K L M N

9 - 15 70 42 68 59-1/2 25 5 or 7 46 13-11/16 30 12-1/2 66 4 21 25

Dimensions - Horizontal

Not To Scale

Tons A B C D E F G H I J K L M N

9 - 15 70 42 68 59-1/2 25 5 46 13-11/16 30 12-1/2 66 4 21 25

“B” Air Path

Bottom Left Rear

A

B

C D E

F G

H

I

J

K

“F” Air Path

Rear

I

K

Left

E

F G

H

A

B

C D

Top

J

“T” Air Path

A

B

C D

Top

J

Left

E

F G

Rear

I

K H

Not To Scale

L M

N

L M

N

N

L

M

“B” Air Path (Rear Inlet and Bottom Supply)

“F” Air Path (Rear Inlet and Front Supply)

“T” Air Path (Rear Inlet and Top Supply)


Engineering Guide

OmegaAir™


Due to product flexibility some options and configurations may not be shown. Contact the factory for specials.

Indoor Ducted Condenser Dimensions

TONS B C D Q R V X Y Z AA AB AC AD PIPING OUTLET LOCATIONS

1-1�5 SINGLE CIRCUIT 35 15⁄16 16 29 9⁄16 37 15⁄16 25 ¼ 4 15⁄16 12 6 ¼ 12 1⁄16 12 2 ¾ 1 ¼ 2 3⁄16

2-4 SINGLE CIRCUIT 47 3⁄8 22 34 ¾ 48 ¾ 21 9⁄16 4 11⁄16 16 10 16 16 4 11⁄16 1 3⁄16 11 1⁄8 ROW 1

5 SINGLE CIRCUIT 55 3⁄8 27 40 3⁄8 56 ¾ 27 ¼ 3 11⁄16 18 15 1⁄16 18 20 4 11⁄16 2 3⁄16 11 1⁄8 ROW 1

4-6 DUAL CIRCUIT 55 3⁄8 27 40 3⁄8 56 ¾ 27 ¼ 3 11⁄16 18 15 1⁄16 18 20 4 11⁄16 2 3⁄16 11 1⁄8 ROWS 1 & 2

8-10 DUAL CIRCUIT 70 5⁄8 29 45 15⁄16 72 1⁄16 32 1⁄8 5 5⁄8 30 14 7⁄16 20 24 3 ½ 1 ½ 11 1⁄8 ROWS 1 & 3

12-15 TRIPLE CIRCUIT 70 5⁄8 29 45 15⁄16 72 1⁄16 32 1⁄8 5 5⁄8 30 14 7⁄16 20 24 3 ½ 1 ½ 11 1⁄8 ROWS 1, 2 & 3

(a) Note(b) Mounting rail height and duct flange 1” TYP

Engineering Guide

OmegaAir™


Due to product flexibility some options and configurations may not be shown. Contact the factory for specials.

Indoor Ducted Condenser Sections

Standard - Back Inlet / Back Discharge

Side Inlet / Back Discharge

Back Inlet / Rear Discharge

Side Inlet / Rear Discharge

Mirror Image Back Inlet / Back Discharge

Mirror Image Side Inlet / Back Discharge

Mirror ImageBack Inlet / Rear Discharge

Mirror ImageSide Inlet / Rear Discharge

Optional Air Paths

Engineering Guide

OmegaAir™


Outdoor Propeller Fan Condenser

Engineering Guide

OmegaAir™


Water-CooledGPM / Ton (min./max.) 2.5 / 3.5

Leaving Water Temp (min./max) 60 / 115

Note: (a) Not all combinations may be valid (b) Dependent upon specific application, some additional refrigerant circuit considerations may be required.

Miscellaneous Application Data

Voltage 208 / 230 460Variation 187 / 253 414 / 504

Condensate Drain Pipes: 3/4” IPS

Service Clearances - Plan View

Note: Outdoor propeller fan condenser clearances: All sides – 36", Above fan – 72"

Engineering Guide

OmegaAir™


1. “OS” Outside Air Type

2. “W” Water-Cooled“A” Air-Cooled with Remote Condenser

3. “V” Vertical Configuration“H” Horizontal Configuration

4. Nominal Tons “1”, “1.5”, “2”, “2.5”, “3”, “4”, “5”, “6”, “7”, “8”, “9”, “10”, “11”, “12”, “13.5”, “15”

5. “G” Common to all

6. “1”, “3”, “4” Indicates Voltage“1” 208-230V, 1 PH 60 Hz“3” 208-230V, 3 PH 60 Hz“4” 460V, 3 PH 60 Hz

7. “ASF”, “ASD”, “AF”, “AD”, “ADF” Quantity of Refrigerant Circuits/Compressor Type“ASF” Indicates 1 Circuit - Fixed Speed Compressor“ASD” Indicates 1 Circuit - Digital Compressor“AF” Indicates 2 Circuits - Fixed Speed Compressors (Both Circuits)“AD” Indicates 2 Circuits - Digital Compressors (Both Circuits)“ADF” Indicates 2 Circuits - Digital (Lead Circuit), Fixed Speed Compressor (Lag Circuit)

8. “T” Traditional Cabinet

9. “A” Refrigerant R-410a

10 “2 thru 70” kW Electric Heat

11. “-T”, “-F”, “-B” Air Path Configuration“-T” Top Discharge“-F” Front Discharge“-B” Bottom Discharge

12. “X” Special Configuration

OmegaAir SectionBasic Model Designation

EXAMPLE: OS1

W2

V3

34

G5

36

ASF7

T8

A9

1010

- T11

X12

Engineering Guide

OmegaAir™


Air-Cooled Indoor Ducted CondenserBasic Model Designation

1. “BCSP” Air-Cooled Condenser Section (1 or 1-1/2 Ton, Centrifugal) “BC” Air-Cooled Condenser Section (2 thru 15 Tons, Centrifugal)

2. Nominal Tons “1”, “1.5”, “2”, “3”, “4”, “5”, “6”, “8”, “10”, “12”, “15”

3. “G” Common to allCommon to all

4. “1”, “3”, “4” Indicates Voltage“1” 208-230V, 1 PH 60 Hz“3” 208-230V, 3 PH 60 Hz“4” 460V, 3 PH 60 Hz

5. “AS” or “A” Quantity of Refrigerant Circuits“AS” Indicates 1 Circuit“A” Indicates 2 Circuits



EXAMPLE: BC1

32

G3

34

AS5

T6

A7

- X8

Engineering Guide

OmegaAir™

80.10-TD (0917)

1. “PBC” Air-Cooled Condenser Section

2. Model Size “2”, “3”, “4”, “5”, “6”, “7”, “10”, “15”, “18”, “21”, “23”, “28”, “31”

3. “G” Common to all

4. “1”, “3”, “4” Power Supply“1” 208-230V, 1 PH 60 Hz“3” 208-230V, 3 PH 60 Hz“4” 460V, 3 PH 60 Hz

5. “AS”, “A” Quantity of Refrigerant Circuits“AS” Indicates 1 Circuit“A” Indicates 2 Circuits



8. “X” Special Configuration

Air-Cooled Outdoor Propeller Fan CondenserBasic Model Designation

EXAMPLE: PBC1

32

G3

34

A5

T6

A7

- X8

80.10-TD (0917)

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491 East Princess Street, York, PA 17403 Phone: 717-843-4311 Fax: 717-854-4462email: [email protected] web: www.unitedcoolair.com

Copyright © by United CoolAir Corporation 2017. All rights reserved. Manufacturer reserves the right to make changes without notice.

Unique Solutions for All-Indoor HVAC Projects

Authorized Distributor: LIMITED WARRANTYUnited CoolAir Units are backed by a 1 year limited warranty on parts and a 5 year limited warranty on the compressor (labor not included). Maintenance items such as filters and belts are excluded under this limited warranty�FACTORY TESTEDAll units are functionally run tested before shipment to ensure a trouble-free start-up and unit commissioning� Industry proven components are used throughout to enhance system reliability and peace of mind�

VertiCool ClassicVertical, 3 - 30 Ton

VertiCool Aurora Vertical, 3 - 35 Tons

VariCool® VAV, 9 - 70 Tons

VariCool® EZ-FitVAV, 12 - 90 Tons

Alpha Aire100 – 500 CFM

Portable Cooling and Heating Units

3-30 Tons

C13-Series Horizontal2 - 10 Tons

C-Series Horizontal1 - 15 Tons

Special Configuration Engineered to Order

OmegaAir Horizontal and Vertical100% Outside Air 150 – 3000 CFM

Documents

Engineering Guide - United CoolAir · PDF fileEngineering Guide OmegaAir™ Subject ... • Aluminum Fin / Copper Tube Evaporator Coil • Dual-circuited coil utilizing ... Optional