DESCRIPTION SINGLE PACKAGE GAS / ELECTRIC … · 530.18-TG3L (500) Cont’d. DESCRIPTION These units are convertible single package units. All models have dual refrigerant circuits

530.18-TG3L (500)

Cont’d.

DESCRIPTION

These units are convertible single package units.All models have dual refrigerant circuits for efficientpart load operation. Although the units are primarilydesigned for curb mounting on a roof, they can alsobe slab-mounted at ground level or set on steelbeams above a finished roof.Cooling only, cooling with gas heat and cooling withelectric heat models are available with severalfactory-mounted options and a wide variety offield-installed accessories to make them suitablefor almost every application.All units are self-contained and assembled on fullperimeter base rails with holes in the four cornersfor overhead rigging.

Every unit is completely piped, wired, charged andtested at the factory to simplify the field installationand to provide years of dependable operation.

All models (including those with an economizer) aresuitable for either bottom or horizontal ductconnections. Models with power exhaust aresuitable for bottom duct connections only. Forbottom duct, you remove the sheet metal panelsfrom the supply and return air openings through thebase of the unit. For horizontal duct, you replace thesupply and return air panels on the rear of the unitwith a side duct flange accessory.

All models are available with three different outdoorair damper options:

• Single enthalpy economizer• Single enthalpy economizer with power exhaust• Motorized outdoor air damperA fixed outdoor air intake assembly is shipped inthe return air compartment of all units orderedwithout an economizer or motorized outdoor airdamper option. The assembly includes a rain hoodwith a damper that can be set for 10, 15 or 25%outdoor air. With bottom duct connections, theintake damper assembly should be mounted overthe opening in the return air panel. With horizontalductwork, it should be mounted on the return airduct.All supply air blowers are equipped with a belt drivethat can be adjusted to meet the exactrequirements of the job. A high speed driveaccessory is available for applications with a higherCFM and/or static pressure requirement.

All compressors include crankcase heat andinternal pressure relief. Every refrigerant circuitincludes an expansion valve, a liquid line filter-drier,a discharge line high pressure switch and a suctionline with a freezestat and low pressure/loss ofcharge switch. The unit control circuit includes a 75VA transformer, a 24-volt circuit breaker and a relayboard with two compressor lockout circuits, aterminal strip for thermostat wiring, plus anadditional set of pin connectors to simplify theinterface of additional field controls.All units have long lasting powder paint cabinetswith 750 hour salt spray test approval underASTM-B117 procedures.

MODEL DHB

MODEL DUC

SINGLE PACKAGEGAS / ELECTRIC UNITS ANDSINGLE PACKAGE AIR CONDITIONERS

DBHB/DBUC 180 & 24015 AND 20 NOMINAL TONS8.5 - 8.7 EER

All gas heat models are built with two heating sections for twoequal stages of capacity control. Each section includes adurable heat exchanger with aluminized steel tubes, aredundant gas valve, spark ignition, power venting, an ignitionmodule for 100% shut-off and all of the safety controls requiredto meet the latest ANSI standards.The gas supply piping can be routed into the heatingcompartment through a hole in the base pan of the unit orthrough a knockout in the piping panel on the front of the unit.All electric heat models are wired for a single power source andinclude a bank of nickel chromium elements mounted at thedischarge of the supply air blower to provide a high velocity anduniform distribution of air across the heating elements. Everyelement is fully protected against excessive current andtemperature by fuses and two thermal limit switches.All internal factory wiring is color coded and numbered for easein servicing and troubleshooting.The power supply wiring can be routed into the control boxthrough a threaded pipe connection in the base pan of the unitor through a knockout in the wiring panel on the front of the unit.

FACTORY-INSTALLED OPTIONS

ECONOMIZERS - Interlocked outdoor and return air dampersare positioned by a fully modulating, spring return damperactuator capable of introducing up to 100% outdoor air withnominal 1% leakage type dampers.. As the outdoor air intakedampers open, the return air dampers close. The changeoverfrom compressor to economizer cooling is determined by asolid state enthalpy control.An outdoor air sensor determines when the outdoor air is cooland dry enough to provide “free” cooling. Whenever the outdoorair is cooler and drier than the return air, the unit will switch toeconomizer operation. The #1 compressor can provideadditional cooling during economizer operation if the roomthermostat calls for second stage.The dampers and controls are installed and wired at the factory.Only the rain hood needs to be assembled and installed in thefield.The economizer option can be used on all duct configurations.MOTORIZED OUTDOOR AIR INTAKE DAMPER - Interlockedoutdoor and return air dampers are controlled by a 2-position,spring return damper actuator. The outdoor damper will opento some pre-set position whenever the supply air blower isoperating and will drive fully closed when the blower shutsdown.The damper and controls are installed and wired at the factory.Only the rain hood needs to be assembled in the field.This damper option can be used on all duct configurations.

FIELD-INSTALLED ACCESSORIES

SINGLE INPUT ELECTRONIC ENTHALPY ECONOMIZERS- Includes a slide-in / plug-in damper assembly with fullymodulating spring-return monitor actuator capable ofintroducing up to 100% outdoor air with nominal 1% leakagetype dampers.

The enthalpy system contains one sensor that monitors theoutdoor air and determines when the air is cool enough anddry enough to provide "free" cooling.The rainhood is painted to match the basic unit and must befield-assembled before installing.On units built prior to January 1995, an accessory field harnessmust be installed.Power exhaust is not available as a field installed option.

DUAL INPUT ELECTRONIC ENTHALPY ECONOMIZERS -Includes a slide-in / plug-in damper assembly with fullymodulating spring-return monitor actuator capable ofintroducing up to 100% outdoor air with nominal 1% leakagetype dampers.This enthalpy system contain one sensor that monitors theoutdoor air and one sensor that monitors the return air. Thelogic module compares these two values and modulates thedampers providing the maximum efficiency of economizersystem.

The rainhood is painted to match the basic unit and must befield-assembled before installing.On units built prior to January 1995, an accessory field harnessmust be installed.Power exhaust is not available as a field installed option.MOTORIZED OUTDOOR AIR INTAKE DAMPER - Includes aslide-in / plug-in damper assembly with a 2-position, springreturn motor actuator which opens to some pre-set positionwhenever the supply air blower is operating and will drive fullyclosed when the blower unit shuts down.The rain hood is painted to match the basic unit and must befield assembled before installing.On units built prior to January 1995 an accessory field harnessmust be installed.

Power exhaust is not available as a field installed option.ROOF CURBS - 14" high roof curbs provide a water-tight sealbetween the unit and the finished roof. These full perimetercurbs meet the requirements of the National RoofingContractors Associat ion (NRCA) and are shippedknocked-down for field assembly. They’re designed to fit insidethe base rails of the unit and include both a wood nailing stripand duct hanger supports.ANTI-RECYCLE TIMERS - Two solid state timers prevent thecompressors from short-cycling. Once a compressor isde-energized, it will remain de-energized for approximately fiveminutes.HIGH ALTITUDE NATURAL GAS - Burner orifices and pilotorifices are provided for proper furnace operation at altitudesup to 6,000 feet.SIDE DUCT FLANGES - 1" flanges replace the supply andreturn air panels on the rear of the unit to accommodatehorizontal duct connections. These flanges can also be usedindividually for bottom supply/horizontal return or horizontalsupply/bottom return.BAROMETRIC RELIEF DAMPER - This damper accessorycan be used to relieve internal air pressure on units with aneconomizer but no power exhaust. This accessory includes arain hood, a bird screen and a fully assembled damper. Withbottom duct connections, the damper should be mounted overthe opening in the return air panel. With horizontal ductwork,the accessory should be mounted on the return air duct.

LOW AMBIENT CONTROLS TO 0°F - An autotransformer anda thermostat maintain stable system operation by reducing thespeed of the #1 condenser fan motor at low outdoortemperatures. The kit also includes a 1-phase motor to replacethe unit’s standard 3-phase condenser fan motor. Standardunits can operate down to 25°F.COIL GAURD KIT - Includes wire coil guard and fasteners. Thecoil gaurd is painted.

TABLE OF CONTENTSPower Exhaust Performance ............................................. 10Field Wiring ........................................................................ 11Electrical Data - Clg. and Gas Heating .............................. 11Electrical Data - Units with Electric Heating ...................... 12Physical Data ..................................................................... 12Unit Dimensions................................................................. 13Roof Curb Dimensions....................................................... 16Typical Applications............................................................ 17

Description ........................................................................... 1Factory-Installed Options..................................................... 2Field-Installed Accessories .................................................. 2Ratings................................................................................. 3Cooling Capacities ............................................................... 4Blower Performance............................................................. 6Blower Motor and Drive Data............................................. 10Static Resistances ................ .............................................10

530.18-TG3L

2 Unitary Products Group

HIGH EFFICIENCY CONVERTIBLE ROOFTOP

208/230, 575 VOLTMODELS ONLY

208/230, 460 VOLTMODELS ONLY

MODEL MBHINPUT

MBHOUTPUT

DBUC180N300 300 240DBUC180N400 400 320DBUC240N300 300 240DBUC240N400 400 320

NOTE: All gas units are two-stage heating. First stage is 50% of total.

S.S.E. = Steady State Efficiency (80%) - output divided by input. S.E. = California Seasonal Efficiency (72%) - determined in accordance with test procedure as specified by the State of California Energy Commission.

MODEL MBH EER IPLV

COOLING ONLYDBHB180 176 8.7 9.2DBHB240 234 8.6 8.05

COOLING WITH GAS HEATDBUC180N300 176 8.5 9.0DBUC180N400 176 8.5 9.0DBUC240N300 232 8.5 8.05DBUC240N400 232 8.5 8.05

MODEL MBH EER IPLV

COOLING WITH ELECTRIC HEATDBHB180E018 176 8.7 9.2DBHB180E036 176 8.6 9.1DBHB180E054 174 8.5 8.7DBHB180E072 174 8.5 8.7DBHB240E018 234 8.5 8.05DBHB240E036 234 8.5 8.05DBHB240E054 232 8.5 8.05DBHB240E072 230 8.5 8.05

GAS HEAT RATINGS

*80/67°F indoor and 95°F outdoor.

EER = Energy Efficiency Ratio at full load - the cooling capacity in Btu’s per hour (Btuh) divided by the power input in watts, expressed in Btuh per watt (Btuh/watt).

IPLV = Integrated part load value. The EER of the unit operating on first stage only.

ELECTRICAL DISCONNECTMOUNTING LOCATION(Field installed)

KNOCKOUT FORSIDE CONTROL WIRING ENTRY

KNOCKOUT FORSIDE POWER WIRING ENTRY SIDE

BOTTOM POWER & CONTROLWIRING ENTRY

KNOCKOUTS FOR SIDEGAS SUPPLY ENTRY

HOLE FOR BOTTOMGAS SUPPLY ENTRY

POWER VENTOR MOTORWITH POST PURGE CYCLEBELT-DRIVE

BLOWER MOTOR

FULL PERIMETER 14 GUAGE BASERAILS WITH LIFTING HOLES

NPTICONDENSATE DRAIN

SIDE AND BOTTOMSUPPLY & RETURN AIR

OUTDOOR AIR OPENINGFOR SLIDE-IN/PLUG-ININTERNAL ECONOMIZER(OPTION)

2" DISPOSABLEFILTERS

ECONOMIZER HOOD

LONG LASTINGPOWDER PAINT FINISH

20 GAUGE ALUMINIZED STEELTUBULAR HEAT EXCHANGERS

COPPER TUBE/ALUMINUM FINCONDENSER COILS

LOW VOLTAGE RELAY BOARDAND TERMINAL STRIP

HIGH EFFICIENCY COMPRESSORSWITH CRANKCASE HEATERS

MODEL DUC(Gas Heating)

RATINGS

INDOOR SOUND POWER RATINGS

UnitSize CFM

ESP BlowerSound Power (db 10-12 Watts)

Octave Band Centerline Frequency (Hz) SWLdb(A)

db(A)@

10 Ft*IWG RPM BHP 63 125 250 500 1,000 2,000 4,000 8,000

180240

8,0008,000

1.001.00

1,0801,120

4.606.65

99102

99102

8992

8285

8487

7780

7275

6770

8992

5659

*At a distance of 10 ft.from the blower.NOTE: These values have been derived using a model of sound propagation, measuring the indoor ambient sound levels ten feet from the source. The dBA values provided are for referenceonly. Calculation of dBA values cover matters of system design and application. This constitutes an exception to any specification or guarantee requiring a dBA value or sound data in any otherform than sound power level ratings.

530.18-TG3L

Unitary Products Group 3

COOLING CAPACITIES - 15 TON (DHB / DUC180)

Air OnEvaporator

Coil

Temperature of Air on Condenser Coil105°F 115°F

TotalCap.1

MBH

PowerInput2

KW

Sensible Capacity1, MBH TotalCap.1

MBH

PowerInput2

KW

Sensible Capacity1, MBH

CFMWB°F

Entering Dry Bulb, °F Entering Dry Bulb, °F86 83 80 77 74 71 68 86 83 80 77 74 71 68

7200

72 199 19.3 164 142 120 98 76 - - 185 20.2 159 137 115 93 71 - -67 176 18.5 176 172 153 131 109 87 - 164 19.3 164 164 148 125 103 81 -62 165 17.9 165 165 165 143 121 99 77 155 18.7 155 155 155 133 111 89 6757 165 17.9 165 165 165 143 121 99 77 155 18.8 155 155 155 134 112 90 68

6750

72 194 19.1 152 131 111 91 71 - - 180 20.0 147 127 106 86 66 - -67 174 18.3 172 162 144 124 104 83 - 161 19.1 161 155 138 118 98 78 -62 161 17.7 161 161 161 140 120 100 80 151 18.6 151 151 151 131 111 90 7057 161 17.8 161 161 161 141 121 101 80 151 18.7 151 151 151 131 111 91 71

6000

72 188 19.0 139 121 103 85 67 - - 174 19.8 134 116 98 80 61 - -67 171 18.2 168 153 135 117 98 80 - 158 18.9 158 147 129 111 92 74 -62 156 17.6 156 156 156 137 119 101 83 146 18.4 146 146 146 128 110 92 7357 156 17.6 156 156 156 138 120 102 84 146 18.5 146 146 146 128 110 92 74

5250

72 183 18.8 127 111 95 80 64 - - 170 19.6 123 107 91 75 59 - -67 164 18.0 153 139 123 108 92 76 - 152 18.8 146 134 118 102 86 70 -62 152 17.4 152 151 144 128 112 97 81 143 18.2 143 142 136 120 104 88 7257 152 17.4 152 152 145 129 113 97 81 143 18.3 143 143 136 120 104 88 72

4500

72 177 18.5 115 102 88 74 61 - - 165 19.4 111 97 84 70 56 - -67 157 17.8 139 126 112 98 85 71 - 147 18.6 135 121 107 94 80 66 -62 147 17.2 147 147 133 119 106 92 78 139 18.0 139 139 125 111 98 84 7057 147 17.2 147 147 133 120 106 92 79 139 18.1 139 139 125 112 98 85 71

1These capacities are gross ratings. For net capacity, deduct the heat of the supply air blower motor, MBH = 3.415 x KW. Refer to the appropriate Blower Performance Table for the KW of the supply air blower motor.2These ratings include the condenser fan motors (Total 1.5 KW) and the compressor motors but not the supply air blower motor.

All Sensible Capacity

Air OnEvaporator

Coil


TotalCap.1

MBH

PowerInput2

KW


MBH

PowerInput2

KW


CFMWB°F


7200

72 227 17.5 176 154 132 110 88 - - 213 18.4 169 147 125 102 80 - -67 202 16.8 202 187 165 143 121 99 - 189 17.7 189 180 158 136 114 92 -62 187 16.2 187 187 187 165 143 121 99 175 17.0 175 175 175 153 131 109 8757 187 16.1 187 187 187 165 143 121 99 175 17.0 175 175 175 153 131 109 87

6750

72 220 17.3 162 142 122 102 82 - - 208 18.3 157 136 116 96 76 - -67 199 16.7 192 175 155 135 115 94 - 186 17.6 183 169 149 129 109 89 -62 181 16.1 181 181 180 159 139 119 99 170 16.9 170 170 170 150 130 110 9057 181 16.0 181 181 181 161 141 121 101 170 16.9 170 170 170 150 130 110 90

6000

72 213 17.2 149 131 113 95 77 - - 202 18.1 144 126 108 90 72 - -67 195 16.5 181 163 145 127 108 90 - 184 17.4 177 159 141 123 104 86 -62 176 16.0 176 176 172 154 136 118 100 166 16.8 166 166 165 147 129 111 9357 176 15.9 176 176 176 158 139 121 103 166 16.7 166 166 166 148 130 111 93

5250

72 207 17.0 137 121 105 89 73 - - 196 17.9 132 116 100 84 68 - -67 187 16.3 165 149 133 118 102 86 - 176 17.2 161 145 129 113 97 81 -62 170 15.8 170 169 161 145 129 113 97 161 16.6 161 160 153 137 121 105 8957 170 15.7 170 170 164 148 132 116 100 161 16.5 161 161 154 138 122 106 90

4500

72 200 16.8 125 111 98 84 70 - - 189 17.6 119 106 92 78 65 - -67 179 16.1 149 136 122 108 95 81 - 168 17.0 144 130 117 103 90 76 -62 165 15.6 165 163 149 135 122 108 94 156 16.3 156 154 141 127 113 100 8657 165 15.5 165 165 152 138 125 111 97 156 16.3 156 156 141 128 114 100 87

Nominal Rating

530.18-TG3L


COOLING CAPACITIES - 20 TON (DHB / DUC240) Air On

EvaporatorCoil


TotalCap.1

MBH

PowerInput2

KW


MBH

PowerInput2

KW


CFMWB°F


9400

72 308 23.5 243 213 183 153 123 - - 290 25.2 235 205 175 145 116 - -67 270 22.5 270 254 225 195 165 135 - 259 23.8 259 246 216 186 156 126 -62 240 21.9 240 240 240 210 180 150 120 230 23.2 230 230 230 200 170 140 11057 240 21.3 240 240 240 210 180 150 120 230 22.6 230 230 230 200 170 140 110

9000

72 299 23.3 224 197 170 143 116 - - 282 24.9 216 189 162 135 108 - -67 266 22.3 258 238 211 184 158 131 - 254 23.6 247 229 202 175 148 121 -62 233 21.7 233 233 231 204 177 150 123 223 23.0 223 223 220 193 166 139 11257 233 21.2 233 233 233 207 180 153 126 223 22.4 223 223 223 196 169 142 116

8000

72 290 23.1 205 181 157 133 109 - - 273 24.6 196 172 148 125 101 - -67 262 22.1 246 222 198 174 150 127 - 250 23.3 235 211 188 164 140 116 -62 227 21.5 227 227 221 197 173 150 126 216 22.7 216 216 209 186 162 138 11457 227 21.0 227 227 227 203 179 155 131 216 22.1 216 216 216 193 169 145 121

7000

72 285 23.0 189 167 146 125 104 - - 267 24.4 182 160 139 118 97 - --67 254 22.0 224 203 182 161 140 119 - 241 23.1 216 195 174 153 132 110 -62 223 21.5 223 218 206 185 163 142 121 211 22.5 211 209 196 175 154 133 11257 223 20.9 223 220 211 190 169 148 126 211 21.9 211 211 203 182 161 139 118

6000

72 280 22.9 172 154 135 117 98 - - 260 24.2 167 148 130 111 93 - -67 246 21.9 203 185 166 148 129 111 - 232 22.9 197 179 160 142 123 105 -62 219 21.4 219 209 190 172 153 135 116 206 22.3 206 202 183 165 146 128 10957 219 20.8 219 214 195 177 158 140 121 206 21.7 206 206 189 171 152 134 115

Air OnEvaporator

Coil


TotalCap.1

MBH

PowerInput2

KW


MBH

PowerInput2

KW


CFMWB°F


9400

72 269 26.4 224 194 164 134 104 - - 248 27.6 213 183 153 123 93 - -67 241 24.9 241 234 206 176 146 116 - 222 26.0 222 222 195 165 135 105 -62 218 24.2 218 218 218 189 159 129 99 207 25.3 207 207 207 177 147 118 8857 218 23.6 218 218 218 189 159 129 99 207 24.7 207 207 207 177 147 118 88

9000

72 263 26.1 206 179 152 126 99 - - 243 27.3 197 170 143 116 89 - -67 237 24.7 234 219 193 166 139 112 - 221 25.8 221 210 184 157 130 103 -62 213 24.0 213 213 210 183 156 129 102 203 25.1 203 203 200 173 146 119 9257 213 23.4 213 213 213 186 159 132 106 203 24.5 203 203 203 176 149 122 95

8000

72 256 25.9 188 164 140 117 93 - - 238 27.1 180 156 132 109 85 - -67 234 24.5 227 204 180 156 133 109 - 219 25.6 219 197 173 149 125 102 -62 208 23.8 208 208 201 177 153 129 106 199 24.8 199 199 192 168 145 121 9757 208 23.2 208 208 208 184 160 136 112 199 24.3 199 199 199 175 151 127 103

7000

72 249 25.7 175 153 132 111 90 - - 232 27.1 168 146 125 104 83 - -67 226 24.3 210 189 168 147 125 104 - 210 25.6 203 183 162 141 119 98 -62 202 23.7 202 201 189 168 147 126 104 194 24.8 194 194 182 161 140 118 9757 202 23.1 202 202 195 174 153 132 111 194 24.2 194 194 188 167 146 124 103

6000

72 243 25.6 161 143 124 106 87 - - 226 27.0 155 137 118 100 81 - -67 217 24.2 192 174 155 137 118 100 - 202 25.5 187 169 150 132 113 95 -62 197 23.6 197 195 177 159 140 122 103 189 24.8 189 189 171 153 134 116 9757 197 23.0 197 197 183 165 146 128 109 189 24.2 189 189 177 159 140 122 103

1These capacities are gross ratings. For net capacity, deduct the heat of the supply air blower motor, MBH = 3.415 x KW. Refer to the appropriate Blower Performance Table for the KW of the supply air blower motor.2These ratings include the condenser fan motors (Total 2.3 KW) and the compressor motors but not the supply air blower motor.

All Sensible CapacityNominal Rating

530.18-TG3L


BLOWER PERFORMANCE - (15 TON SUPPLY AIR)

DHB180 - BOTTOM DUCT CONNECTIONS

BLOWERSPEED,(RPM)

MOTORPULLEY(TURNSOPEN)*

CFM4500 5250 6000 6750 7200

ESP BHP KW ESP BHP KW ESP BHP KW ESP BHP KW ESP BHP KW

208 VOLT AND STANDARD DRIVE850 6.0** 0.9 2.4 2.2 0.7 3.0 2.7 0.5 3.2 2.9 - - - - - -870 5.5 1.0 2.5 2.3 0.8 3.1 2.8 0.6 3.5 3.1 0.2 4.1 3.7 - - -915 4.5 1.1 2.6 2.4 0.9 3.4 3.0 0.7 3.7 3.3 0.3 4.4 3.9 0.2 4.5 4.0965 3.5 1.2 2.9 2.6 1.0 3.6 3.2 0.8 4.0 3.6 0.5 4.7 4.2 0.4 4.9 4.4980 3.0 1.3 3.0 2.7 1.1 3.7 3.3 0.9 4.1 3.7 0.6 4.8 4.3 0.5 5.1 4.61010 2.0 1.4 3.1 2.8 1.2 3.8 3.4 1.0 4.2 3.8 0.7 5.0 4.5 0.6 5.4 4.81040 1.0 1.5 3.2 2.9 1.3 3.9 3.5 1.1 4.5 4.0 0.9 5.2 4.7 0.7 5.7 5.1

208 VOLT AND HIGH SPEED DRIVE ACCESSORY965 6.0 1.2 2.9 2.6 1.0 3.6 3.2 0.8 4.0 3.6 0.5 4.7 4.2 0.4 5.0 4.4980 5.5 1.3 3.0 2.7 1.1 3.7 3.3 0.9 4.1 3.7 0.6 4.8 4.3 0.5 5.1 4.61025 4.5 1.5 3.2 2.9 1.3 3.9 3.5 1.1 4.5 4.0 0.8 5.1 4.6 0.7 5.6 5.01065 3.5 1.6 3.4 3.0 1.4 4.0 3.6 1.2 4.7 4.2 1.0 5.5 4.9 - - -1095 3.0 1.7 3.5 3.1 1.5 4.2 3.8 1.3 4.9 4.4 1.2 5.7 5.1 - - -1130 2.0 1.9 3.7 3.3 1.7 4.5 4.0 1.5 5.1 4.6 - - - - - -1170 1.0 2.1 3.9 3.5 2.0 4.7 4.2 1.8 5.5 4.9 - - - - - -

230/460/575 VOLT AND STANDARD DRIVE870 6.0** 1.0 2.4 2.2 0.8 3.1 2.8 0.6 3.5 3.1 0.2 4.1 3.7 - - -915 5.0 1.1 2.6 2.4 0.9 3.3 3.0 0.7 3.7 3.3 0.3 4.4 3.9 0.2 4.5 4.0965 4.0 1.2 2.9 2.6 1.0 3.6 3.2 0.8 4.0 3.6 0.5 4.7 4.2 0.4 5.0 4.4980 3.5 1.3 3.0 2.7 1.1 3.7 3.3 0.9 4.1 3.7 0.6 4.8 4.3 0.5 5.1 4.61040 2.0 1.5 3.2 2.9 1.3 3.9 3.5 1.1 4.5 4.0 0.9 5.3 4.7 0.7 5.7 5.11065 1.0 1.6 3.3 3.0 1.4 4.0 3.6 1.2 4.7 4.2 1.0 5.5 4.9 - - -

230/460/575 VOLT AND HIGH SPEED DRIVE ACCESSORY980 6.0 1.3 2.9 2.6 1.1 3.7 3.3 0.9 4.1 3.7 0.6 4.8 4.3 0.5 5.1 4.61040 4.5 1.5 3.2 2.9 1.3 3.9 3.5 1.1 4.5 4.0 0.9 5.3 4.7 0.7 5.7 5.11065 4.0 1.6 3.4 3.0 1.4 4.0 3.6 1.2 4.7 4.2 1.0 5.5 4.9 - - -1095 3.5 1.7 3.5 3.1 1.5 4.2 3.8 1.3 4.9 4.4 1.2 5.7 5.1 - - -1130 2.5 1.9 3.7 3.3 1.7 4.5 4.0 1.5 5.1 4.6 - - - - - -1170 1.5 2.1 3.9 3.5 2.0 4.7 4.2 1.8 5.5 4.9 - - - - - -1190 1.0 2.2 4.0 3.6 2.1 4.8 4.3 2.0 5.7 5.1 - - - - - -

NOTES: 1. Blower performance includes fixed outdoor air, 2" T/A filters, a dry evaporator coil and no electric heat.

2. Refer to Page 10 for additional static resistances.

ESP = External Static Pressure available for the supply and return air duct system. All internal unit resistances have been deducted from the total static pressure of the blower.

* Do NOT close the pulley below 1 turn open.

** Factory setting.

530.18-TG3L



DUC180 - BOTTOM DUCT CONNECTIONS

BLOWERSPEED,(RPM)


CFM4500 5250 6000 6750 7200


208 VOLT AND STANDARD DRIVE850 6.0** 0.9 2.4 2.1 0.6 2.9 2.6 0.3 3.4 3.0 - - - - - -870 5.5 1.0 2.5 2.2 0.7 3.0 2.7 0.4 3.5 3.1 - - - - - -915 4.5 1.1 2.6 2.4 0.8 3.1 2.8 0.5 3.6 3.2 0.2 4.1 3.7 - - -965 3.5 1.2 2.7 2.5 0.9 3.2 2.9 0.6 3.7 3.3 0.4 4.4 3.9 0.2 5.0 4.5980 3.0 1.3 2.9 2.6 1.0 3.4 3.0 0.7 3.8 3.4 0.5 4.5 4.0 0.3 5.1 4.61010 2.0 1.4 3.0 2.7 1.1 3.6 3.2 0.8 4.0 3.6 0.6 4.7 4.2 0.4 5.4 4.81040 1.0 1.6 3.2 2.9 1.3 3.8 3.4 1.0 4.4 3.9 0.8 5.0 4.5 0.6 5.6 5.0

208 VOLT AND HIGH SPEED DRIVE ACCESSORY965 6.0 1.2 2.7 2.5 0.9 3.2 2.9 0.6 3.7 3.3 0.4 4.4 3.9 0.2 5.0 4.5980 5.5 1.3 2.9 2.6 1.0 3.4 3.0 0.7 3.8 3.4 0.5 4.5 4.0 0.3 5.1 4.61025 4.5 1.4 3.1 2.8 1.2 3.6 3.2 0.9 4.1 3.7 0.7 4.8 4.3 0.4 5.5 4.91065 3.5 1.6 3.4 3.0 1.4 3.9 3.5 1.1 4.5 4.0 0.9 5.1 4.6 - - -1125 2.0 1.9 3.6 3.2 1.7 4.4 3.9 1.4 5.0 4.5 1.2 5.8 5.2 - - -1170 1.0 2.1 3.9 3.5 1.9 4.7 4.2 1.6 5.5 4.9 - - - - - -

230/460/575 VOLT AND STANDARD DRIVE870 6.0** 1.0 2.5 2.2 0.7 3.0 2.7 0.4 3.5 3.1 - - - - - -915 5.0 1.1 2.6 2.4 0.8 3.1 2.8 0.5 3.6 3.2 0.2 4.1 3.7 - - -965 4.0 1.2 2.7 2.5 0.9 3.2 2.9 0.6 3.7 3.3 0.4 4.4 3.9 0.2 5.0 4.5980 3.5 1.3 2.9 2.6 1.0 3.4 3.0 0.7 3.8 3.4 0.5 4.5 4.0 0.3 5.1 4.61015 2.5 1.4 3.0 2.7 1.1 3.6 3.2 0.8 4.0 3.6 0.6 4.7 4.2 0.4 5.4 4.81050 1.5 1.5 3.1 2.8 1.2 3.7 3.3 0.9 4.2 3.8 0.7 4.9 4.4 0.5 5.7 5.11065 1.0 1.6 3.4 3.0 1.4 3.9 3.5 1.1 4.5 4.0 0.9 5.1 4.6 - - -

230/460/575 VOLT AND HIGH SPEED DRIVE ACCESSORY980 6.0 1.3 2.9 2.6 1.0 3.4 3.0 0.7 3.8 3.4 0.5 4.5 4.0 0.3 5.1 4.61045 4.5 1.6 3.2 2.9 1.3 3.8 3.4 1.0 4.4 3.9 0.8 5.0 4.5 0.6 5.6 5.01065 4.0 1.7 3.4 3.0 1.4 3.9 3.5 1.1 4.5 4.0 0.9 5.1 4.6 - - -1125 2.5 1.9 3.6 3.2 1.7 4.4 3.9 1.4 5.0 4.5 1.2 5.8 5.2 - - -1170 1.5 2.1 3.9 3.5 1.8 4.7 4.2 1.6 5.5 4.9 - - - - - -1190 1.0 2.2 4.0 3.6 1.9 4.8 4.3 1.7 5.6 5.0 - - - - - -

NOTES: 1. Blower performance includes a gas-fired heat exchanger, fixed outdoor air, 2" T/A filters and a dry evaporator coil.




** Factory setting.

530.18-TG3L


BLOWERSPEED,(RPM)


CFM6000 7000 8000 9000 9400


208 VOLT AND STANDARD DRIVE870 6.0** 0.4 2.1 1.8 0.1 2.3 2.0 - - - - - - - - -900 5.0 0.8 3.2 2.7 0.5 3.5 2.9 0.2 3.8 3.2 - - - - - -930 4.0 1.1 4.1 3.4 0.9 4.5 3.8 0.6 4.9 4.1 0.1 5.1 4.3 - - -950 3.0 1.3 4.6 3.9 1.1 5.1 4.3 0.8 5.5 4.6 0.4 5.9 5.0 - - -980 2.0 1.6 5.3 4.5 1.4 5.8 4.9 1.2 6.3 5.3 0.7 6.9 5.8 0.2 7.3 6.1

1015 1.0 1.9 5.9 5.0 1.7 6.5 5.5 1.5 7.0 5.9 1.0 7.7 6.5 0.6 8.2 6.9

208 VOLT AND HIGH SPEED DRIVE ACCESSORY950 6.0 1.3 4.6 3.9 1.1 5.1 4.3 0.8 5.5 4.6 0.4 5.9 5.0 - - -980 5.0 1.6 5.3 4.5 1.4 5.8 4.9 1.2 6.3 5.3 0.7 6.9 5.8 0.2 7.3 6.1

1010 4.0 1.8 5.8 4.9 1.7 6.3 5.3 1.5 6.9 5.8 1.0 7.5 6.3 0.5 7.9 6.71020 3.5 1.9 6.1 5.1 1.8 6.5 5.5 1.6 7.1 6.0 1.1 7.8 6.6 0.6 8.3 7.01035 3.0 2.0 6.2 5.2 1.9 6.8 5.7 1.7 7.4 6.2 1.2 8.1 6.8 0.7 8.6 7.31050 2.5 2.1 6.4 5.4 2.0 7.0 5.9 1.8 7.6 6.4 1.3 8.3 7.0 - - -1075 2.0 2.3 6.6 5.5 2.1 7.2 6.0 1.9 7.8 6.6 1.5 8.6 7.2 - - -1100 1.0 2.4 6.7 5.6 2.2 7.3 6.1 2.1 7.9 6.7 - - - - - -

230/460/575 VOLT AND STANDARD DRIVE870 6.0** 0.4 2.1 1.8 0.1 2.3 2.0 - - - - - - - - -900 5.0 0.8 3.2 2.7 0.5 3.5 2.9 0.2 3.8 3.2 - - - - - -930 4.0 1.1 4.1 3.4 0.9 4.5 3.8 0.6 4.9 4.1 0.1 5.1 4.3 - - -950 3.5 1.3 4.6 3.9 1.1 5.1 4.3 0.8 5.5 4.6 0.4 5.9 5.0 - - -980 2.5 1.6 5.3 4.5 1.4 5.8 4.9 1.2 6.3 5.3 0.7 6.9 5.8 0.2 7.3 6.1

1015 1.5 1.9 5.9 5.0 1.7 6.5 5.5 1.5 7.0 5.9 1.0 7.7 6.5 0.6 8.2 6.91025 1.0 2.0 6.1 5.1 1.8 6.6 5.6 1.6 7.3 6.1 1.1 7.9 6.7 0.7 8.6 7.3

230/460/575 VOLT AND HIGH SPEED DRIVE ACCESSORY950 6.0 1.3 4.6 3.9 1.1 5.1 4.3 0.8 5.5 4.6 0.4 5.9 5.0 - - -980 5.0 1.6 5.3 4.5 1.4 5.8 4.9 1.2 6.3 5.3 0.7 6.9 5.8 0.2 7.3 6.1

1015 4.0 1.9 5.9 5.0 1.7 6.5 5.5 1.5 7.0 5.9 1.0 7.7 6.5 0.6 8.2 6.91035 3.5 2.0 6.2 5.2 1.9 6.8 5.7 1.7 7.4 6.2 1.2 8.1 6.8 0.7 8.6 7.31050 3.0 2.1 6.4 5.4 2.0 7.0 5.9 1.8 7.6 6.4 1.3 8.3 7.0 - - -1080 2.0 2.3 6.6 5.5 2.1 7.2 6.0 1.9 7.8 6.6 1.5 8.6 7.2 - - -1100 1.5 2.4 6.7 5.6 2.2 7.3 6.1 2.1 7.9 6.7 - - - - - -1120 1.0 2.5 6.8 5.7 2.3 7.4 6.2 2.2 8.1 6.8 - - - - - -

NOTES: 1. Blower performance includes fixed outdoor air, 2" T/A filters, a dry evaporator coil and no electric heat.




** Factory setting.


DHB240 - BOTTOM DUCT CONNECTIONS

530.18-TG3L


BLOWERSPEED,(RPM)


CFM6000 7000 8000 9000 9400


208 VOLT AND STANDARD DRIVE870 6.0** 1.3 3.6 3.0 0.7 4.3 3.7 0.2 5.1 4.3 - - - - - -900 5.0 1.4 3.8 3.2 0.9 4.7 4.0 0.4 5.6 4.7 - - - - - -930 4.0 1.6 4.1 3.4 1.1 5.0 4.2 0.6 5.9 5.0 0.1 6.7 5.7 - - -950 3.0 1.7 4.2 3.6 1.3 5.1 4.3 0.8 6.0 5.1 0.2 6.9 5.8 - - -980 2.0 1.9 4.5 3.8 1.5 5.4 4.5 1.0 6.3 5.3 0.4 7.2 6.1 0.1 8.5 7.1995 1.5 2.1 4.6 3.9 1.6 5.5 4.7 1.1 6.4 5.4 0.5 7.5 6.3 0.2 8.6 7.3

1015 1.0 2.2 4.8 4.0 1.7 5.7 4.8 1.2 6.6 5.6 0.7 7.8 6.6 - - -

208 VOLT AND HIGH SPEED DRIVE ACCESSORY950 6.0 1.7 4.2 3.6 1.3 5.1 4.3 0.8 6.0 5.1 0.2 6.9 5.8 - - -980 5.0 1.9 4.5 3.8 1.5 5.4 4.5 1.0 6.3 5.3 0.4 7.2 6.1 0.1 8.5 7.1995 4.5 2.1 4.6 3.9 1.6 5.5 4.7 1.1 6.4 5.4 0.5 7.5 6.3 0.2 8.6 7.3

1025 3.5 2.3 4.9 4.1 1.8 5.8 4.9 1.3 6.7 5.7 0.7 8.0 6.7 - - -1050 2.5 2.5 5.1 4.3 2.0 6.1 5.1 1.4 7.1 6.0 0.9 8.4 7.0 - - -1065 2.0 2.6 5.3 4.4 2.1 6.3 5.3 1.5 7.3 6.2 1.0 8.6 7.2 - - -1100 1.0 2.9 5.6 4.7 2.3 6.8 5.7 1.8 7.9 6.6 - - - - - -

230/460/575 VOLT AND STANDARD DRIVE870 6.0** 1.3 3.6 3.0 0.7 4.3 3.7 0.2 5.1 4.3 - - - - - -900 5.0 1.4 3.8 3.2 0.9 4.7 4.0 0.4 5.6 4.7 - - - - - -930 4.0 1.6 4.1 3.4 1.1 5.0 4.2 0.6 5.9 5.0 0.1 6.7 5.7 - - -950 3.5 1.7 4.2 3.6 1.3 5.1 4.3 0.8 6.0 5.1 0.2 6.9 5.8 - - -965 2.5 1.9 4.5 3.8 1.5 5.4 4.5 1.0 6.3 5.3 0.4 7.2 6.1 0.1 8.5 7.1995 2.0 2.1 4.6 3.9 1.6 5.5 4.7 1.1 6.4 5.4 0.5 7.5 6.3 0.2 8.6 7.3

1015 1.5 2.2 4.8 4.0 1.7 5.7 4.8 1.2 6.6 5.6 0.6 7.8 6.6 - - -1025 1.0 2.3 4.9 4.1 1.8 5.8 4.9 1.3 6.7 5.7 0.7 8.0 6.7 - - -

230/460/575 VOLT AND HIGH SPEED DRIVE ACCESSORY950 6.0 1.7 4.2 3.6 1.3 5.1 4.3 0.8 6.0 5.1 0.2 6.9 5.8 - - -980 5.0 1.9 4.5 3.8 1.5 5.4 4.5 1.0 6.3 5.3 0.4 7.2 6.1 0.1 8.5 7.1995 4.5 2.1 4.6 3.9 1.6 5.5 4.7 1.1 6.4 5.4 0.5 7.5 6.3 0.2 8.6 7.3

1015 4.0 2.2 4.8 4.0 1.7 5.7 4.8 1.2 6.6 5.6 0.6 7.8 6.6 - - -1025 3.5 2.3 4.9 4.1 1.8 5.8 4.9 1.3 6.7 5.7 0.7 8.0 6.7 - - -1050 3.0 2.5 5.1 4.3 2.0 6.1 5.1 1.4 7.1 6.0 0.9 8.4 7.0 - - -1065 2.5 2.6 5.3 4.4 2.1 6.3 5.3 1.5 7.3 6.2 1.0 8.6 7.2 - - -1100 1.5 2.9 5.6 4.7 2.3 6.8 5.7 1.8 7.9 6.6 - - - - - -1120 1.0 3.1 5.8 4.9 2.5 7.0 5.9 1.9 8.3 6.9 - - - - - -

NOTES: 1. Blower performance includes a gas-fired heat exchanger, fixed outdoor air, 2" T/A filters and a dry evaporator coil.




** Factory setting.


DUC240 - BOTTOM DUCT CONNECTIONS

530.18-TG3L


POWER EXHAUST PERFORMANCE

MOTORSPEED

STATIC RESISTANCE OF RETURN DUCTWORK, IWG0.2 0.3 0.4 0.5 0.6

CFM KW CFM KW CFM KW CFM KW CFM KW

HIGH* 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 - - - -

*Factory Setting Power Exhaust motor is a 3/4 HP, PSC type with sleeve bearings, a 48 frame and inherent protection.

BLOWER MOTOR AND DRIVE DATA

MODELSIZE DRIVE

BLOWERRANGE(RPM)

MOTOR1 ADJUSTABLE MOTOR PULLEY FIXED BLOWER PULLEY BELT(NOTCHED)

HP FRAME EFF.(%)

DESIG-NATION

OUTSIDEDIA.(IN.)

PITCHDIA.(IN.)

BORE(IN.)

DESIG-NATION

OUTSIDEDIA.(IN.)

PITCHDIA.(IN.)

BORE(IN.)

DESIG-NATION

PITCHLENGTH

(IN.)QTY.

15 TON

Stan-dard 850/1065

5 184T 83 1VP56 5.35 4.3-5.32 1-1/8

BK90 8.75 8.4 1 BX70 71.8 1

HighSpeedAccess

965/1190 BK80 7.75 7.4 1 BX68 69.8 1

20 TON

Stan-dard 870/1025

7.5 213T 89 1VP68 6.75 5.5-6.52 1-3/8

BK120 11.75 11.4 1-3/16 BX83 84.8 1

HighSpeedAccess

950/1120 BK110 10.75 10.4 1-3/16 BX80 81.8 1

1All 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 pulley below 1 turn open.

STATIC RESISTANCES*

EXTERNAL STATIC PRESSURE DROP

DESCRIPTION

RESISTANCE, IWGCFM

15 TON 20 TON4500 6000 7200 6000 8000 9400

WET COIL 0.1 0.1 0.1 0.1 0.1 0.1

ELECTRIC HEAT OPTIONS

18 KW 0.1 0.1 0.1 0.1 0.1 0.136 KW 0.1 0.2 0.3 0.1 0.2 0.354 KW 0.2 0.3 0.4 0.2 0.3 0.472 KW 0.2 0.4 0.6 0.2 0.4 0.6

ECONOMIZER OPTION 0.1 0.1 0.1 0.1 0.1 0.1HORIZONTAL DUCT CONNECTIONS 0.2 0.3 0.5 0.2 0.3 0.5

*Deduct these resistance values from the available unit ESP values listed in the respective blower performance table except for Horizontal Duct Connections (Shaded ). Add these values due to less airflow resistance.

530.18-TG3L


MODEL POWERSUPPLY

COMPRESSORS COND. FANMOTORS(#1 & #2)

SUPPLY AIRBLOWERMOTOR

MINIMUMCIRCUIT

AMPACITY(AMPS)

MAXIMUMTIME DELAYFUSE SIZE

(AMPS)

#1 #2

RLA LRA RLA LRA HPEACH

FLAEACH HP FLA

DBHB180DBUC180

208/230-3-60 38.4 248 19.2 124 1 4.1/4.2 5 15.4/14.4 87.1/84.9 100460-3-60 19.2 124 9.6 62 1 2.1 5 7.2 42.4 50575-3-60 15.4 100 7.7 50 1 2.0 5 5.9 33.9 40

DBHB240DBUC240

208/230-3-60 38.4 248 38.4 248 1 4.1/4.2 7.5 21.0/19.4 115.1/111.6 125460-3-60 19.2 124 19.2 124 1 2.1 7.5 9.7 55.8 60575-3-60 15.4 100 15.4 100 1 2.0 7.5 7.8 44.8 50

ELECTRICAL DATA - Cooling Only Units and Units With Gas Heat

FIELD WIRING - DHB/DUC Electric/Electric and Gas/Electric Units

VOLTAGELIMITATIONS**

POWER SUPPLYVOLTAGE

MIN. MAX.208/230-3-60 187 253

460-3-60 414 506575-3-60 518 630

**Rated in accordance with ARI Standard 110, utilization range "A".

530.18-TG3L


MODELSDHB/DUC

180 240EVAPORATOR

BLOWERCENTRIFUGAL BLOWER (Dia. x Wd. in.) 15 x 15 18 x 15FAN MOTOR HP 5 7.5

EVAPORATORCOIL

ROWS DEEP 3 3FINS PER INCH 13.5 13.5FACE AREA (Sq. Ft.) 15.5 20.5

CONDENSERFAN

(Two Per Unit)

PROPELLER DIA. (in.) (Each) 30 30FAN MOTOR HP (Each) 1 1NOM. CFM TOTAL (Each) 6500 7200

CONDENSERCOIL

ROWS DEEP 2 2FINS PER INCH 13 20FACE AREA (Sq. Ft.) 36.0 43.3

COMPRESSOR(Qty. Per Unit)

10-TON TANDEM 1* 25-TON HERMETIC 1 -

AIRFILTERS

QUANTITY PER UNIT (16" X 20" X 2") - 4QUANTITY PER UNIT (16" X 25" X 2") - 4QUANTITY PER UNIT (18" X 24" X 2") 5 -TOTAL FACE AREA (sq. ft.) 15.0 20.0

CHARGE REFRIGERANT 22(lbs./oz.)

SYSTEM NO. 1 17/8 18/0SYSTEM NO. 2 8/8 18/0

*This compressor will be energized first.

PHYSICAL DATABASIC UNITS

MODELDBHB

POWERSUPPLY

HEATER OPTION MINIMUMCIRCUIT

AMPACITY(AMPS)

MAXIMUMTIME DELAYFUSE SIZE

(AMPS)MODEL KW1 STAGES AMPS

-T180A

208-3-60

E018E036E054E072

13.527.040.654.1

1222

37.575.1

112.6150.1

87.1114.7161.6171.0

100125175200

230-3-60

E018E036E054E072

18.036.054.072.0

1222

43.386.6

129.9173.2

84.9127.3148.9192.2

100150175225

-W180A 460-3-60

E018E036E054E072

18.036.054.072.0

1222

21.743.365.086.6

42.463.674.596.1

507090110

-X180A 575-3-60

E018E036E054E072

18.036.054.072.0

1222

17.334.652.069.3

33.950.959.676.9

40607090

-T240A

208-3-60

E018E036E054E072

13.527.040.654.1

1222

37.575.1

112.6150.1

115.1124.1171.0180.4

125125175200

230-3-60

E018E036E054E072

18.036.054.072.0

1222

43.386.6

129.9173.2

111.6135.8157.4200.7

125150175225

-W240A 460-3-60

E018E036E054E072

18.036.054.072.0

1222

21.743.365.086.6

55.867.978.7100.4

607090110

-X240A 575-3-60

E018E036E054E072

18.036.054.072.0

1222

17.334.652.069.3

44.854.663.280.5

50607090

1Electric Heat CORRECTION FACTORS:

ELECTRICAL DATA - Units With Electric Heat

MODEL SIZE 180 240

Basic UnitDHB (Cooling only) 1900 2100DUC(Gas / Electric)

N300 2100 2300N400 2140 2340

Options

Economizer 160Economizer withPower Exhaust 245

Motorized Damper 150

Electric Heater(DHB only)

18 KW 2536 KW 3054 KW 3572 KW 40

AccessoriesRoof Curb 175 185Barometric Damper 45 45Wood Skid 200 220

NOMINAL VOLTAGE VOLTAGE KW CAP. MULTIPLIER208 208 1.00240 230 0.92480 460 0.92600 575 0.92

OPERATING WEIGHTS (LBS.)

530.18-TG3L


All dimensions are in inches. They aresubject to change without notice. Certifieddimensions will be provided upon request.

CLEARANCESFront 36"

Back 24" (Less Economizer)49" (With Economizer)

Left Side (Filter Access) 24" (Less Economizer)36" (With Economizer)

Right Side (Cond. Coil) 36"Below Unit1 20"

Above Unit272" With 36" Maximum Horizontal Overhang (For Condenser Air Discharge)

1Units (applicable in U.S.A. only) may be installed on combustible floors made from wood or class A, B or C roof covering material.2Units must be installed oudoors. Overhanging structures or shrubs should not obstruct condenser air discharge outlet.

NOTE:DHB Models: Units and ductwork are approved for zero clearance to combustible materials when equipped with electric heaters.

DUC Models: A 1" clearance must be provided between any combustiblematerial and the supply air ductwork for a distance of 3 feet from the unit.

The products of combustion must not be allowed to accumulate within aconfined space and recirculate.

Locate unit so that the vent air outlet hood is at least:

• Three (3) feet above any forced air inlet located within 10 horizontal fe(excluding those integral to the unit).

• Four (4) feet below, 4 horizontal feet from, or 1 foot above any door or graviair inlet into the building.

• Four (4) feet from electric meters, gas meters, regulators and relief equipmen

HOLEOPENING

SIZE(DIA.)

USED FOR

A1-1/8" KO Control

WiringFront

3/4" NPS (Fem.) Bottom

B3-5/8" KO Power

WiringFront

3" NPS (Fem.) BottomC* 2-3/8" KO Gas Piping (Front)

D 1-11/16" Hole Gas Piping (Bottom)**

*1" NPT Required **Opening in the bottom of the unit can be located by the slice in the insulation.

UTILITIES ENTRY DATA

UNIT DIMENSIONS-(DHB AND DUC - 15 & 20 TON)

RETURN AIR

SUPPLYAIR

BOTTOM SUPPLYAND RETURN

AIR OPENINGS(See Note)

(B)POWER WIRINGENTRY

(A)CONTROL WIRING ENTRYNOTE:

For curb mounted units, refer to the curb hangerdimensions of the curb for the proper size of thesupply and return air duct connections.

UNIT BASE WITH RAILSShown separately to illustrateBottom Duct openings and PowerConnection locations

12-1/2"

9-1/4"

8-1/8"

9-3/4"

3-3/4"

(B)POWER WIRINGENTRY

(A)CONTROL WIRING ENTRY

92"

CONDENSERCOILS

OPTIONAL COILGUARD KIT

48-5/8" (15 TON)52-5/8" (20 TON)

COMPRESSORACCESS(See detail "X")

ECONOMIZER / MOTORIZED DAMPER,FIXED OUTDOOR INTAKE AIR ANDPOWER EXHAUST RAIN HOODS(See detail "Y")

FIELD-SUPPLIEDDISCONNECT SWITCHLOCATION

BLOWERACCESS

BLOWER MOTORACCESS

BLOWERCOMPARTMENTACCESS(Auxiliary)

DOT PLUG(For pressureDrop Reading)

FRONTVIEW ELECTRIC HEAT

ACCESS

CONTROL BOXACCESS

125-1/4" (15 TON)136-1/4" (20 TON)

21"

5"

9-3/4"

11-1/2"

2-3/4" 21-1/2"

33"

35"

5-7/8"

24-1/4" (15 TON)35-1/4" (20 TON)

RETURN AIR

SUPPLY AIR

OUTDOOR AIR

OUTDOOR AIR(Economizer)

DHBUNIT

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� � � � � � � ��

� � � � � � � � � � � �� 9 � �

� � � � � � �� ! � � ' " + � 4 : 4 �

� � � � � � � ; � � � 3 � � � � � � � ; � � � � � � � � $� � : � � � � � � � � � � � � � � � 9 � � � � � � � � � � � � � � � : . � � � � � � � � � . � � � � � � � ! � � ' " + � 4 � 4 �

� � � � � 2 � � � � �� .� � � � � � � �

� � � � ��

� � � � � � � � � � ��

� � � � �� < " + " ' � , �

� � � � � � �� ) � � # # � � �� ) � � � ' ! " ( �

� � � � ��

� � � � � � � � � :� � � �

1 0 4

= 4

5 2 8 3 6 4

0 0 2 0 3 1 4

1 2 8 3 6 4 1 0 2 0 3 1 4

8 8 4

8 = 4

= 2 > 3 7 4

6 ? 2 = 3 7 4

> 2 0 3 7 4

? 2 8 3 7 4

@ � � � � � � �� . � � �

� � � � � � � �� . � � �

� � � . � � ��

� � ��

6 ? 2 = 3 7 4

0 0 2 0 3 7 4

� � ��

8 = 2 0 3 6 �

0 8 ? 2 0 3 6

= 1 2 = 3 7 �

� � � � � � � � �

� � � � � � � �

� � � � � � � � � �

� � � � � � � � � ��

5 1 4

DUCUNIT

530.18-TG3L


OUTDOOR AIR PANEL SIZES

15 TON UNITS 21-1/2" X 43"

20 TON UNITS 32-1/2" X 43"

CENTER OF GRAVITY

UNIT DIMENSIONS - CONT’D.-(DHB and DUC - 15 & 20 TON)

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� � � � � � ��

� � ��

� � � � � � � � � ��

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� � � � � � ��

� � � � � � � � � � � � � � �

� � � � � � � � � ��

� � � � � � � � � � ��

0 4 � � � � � � � � � �� - � � � � � ��

� � � � � ��

� � � � � � �� ) � � # # � � �! � � ) � � � ' ! " ( �

� @ � � � � � � � � � � � � �

6 A 2 0 3 1 4

1 7 2 = 3 7 4 � � 0 = � � � # �8 5 2 = 3 7 4 � � 1 A � � � # �

1 > 2 8 3 6 4

= 2 0 3 7 4

0 7 2 = 3 7 4

= 2 0 3 1 4

6 A 2 8 3 7 4

� � � �@ � � �

DETAIL “X”ACCESSORY SIDE SUPPLY AND RETURN AIR OPENINGS

DUCT COVERS - Units are shipped with the bottomduct openings covered. An accessory flange kit is avail-able for connecting side ducts.For bottom duct applications:1. Remove the side panels from the supply and return air compartments to gain access to the bottom supply and return air duct covers.2. Remove and discard the bottom duct covers. (Duct openings are closed with sheet metal covers except when the unit includes a power exhaust option. The covering consists of a heavy black paper composition.)3. Replace the side supply and return air compartment panels.For side duct applications;1. Replace the side panels on the supply and return air compartments with the accessory flange kit panels.2. Connect ductwork to the duct flanges on the rear of the unit.

� � � � � � ��

� � � � � � : . � � �� . � � �� " � � � � � ) ' � � � � � �

� � � � � � � ; � �� ; � �� . � � �� ! � � � � � " � � � � � ) ' � � � � � �

� � � � � � � ; � � � 3 � � � � � � � ; � � � � � � � �� : . � � � � � � � � � . � � �

� � : � �� 9 � � . � � �� + � � ' � � ! � � � � � � � � � " �� ) ' � � � � � �

0 4 � � � � � � � � � � �� # � � � � � � � ' ) ) � ! �

� � � � � @ � � � � . � � @ � � �� 4 � 4

� � � � � � � � . � � � � � � . � � �

8 ? 4

? ? 2 0 3 1 45 1 48 ? 2 0 3 6 4

= 4

8 6 2 0 3 6 4

0 ? 2 0 3 7 4

1 4

530.18-TG3L


CENTER OF GRAVITY

�

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�

�

��

4 POINT LOADS

UNIT4 - POINT LOADS (LBS)

TOTAL A B C D180 2060 483 525 548 504240 2260 568 814 888 620


TOTAL A B C D180 2300 539 563 612 586240 2500 538 563 715 684

NOTE: These weights are with economizer (electric heat) high heat, and the largest blower motor available (gas heat).


TOTAL A B C D E F180 2060 322 336 350 365 351 336240 2260 325 368 412 431 385 339


TOTAL A B C D E F180 2300 351 367 392 416 399 375240 2500 334 350 426 502 481 407

NOTE: These weights are with economizer (electric heat) high heat, and the largest blower motor available (gas heat).

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6 POINT LOADS

CENTER OF GRAVITY

530.18-TG3L


UNIT AND CURB APPLICATION

ROOF CURB DIMENSIONS-(DHB and DUC - 15 & 20 TON)

ROOF CURB BENEFITS

5/16"5/16"

➀ The 2" space between the ducts allows for “jumping” an existing roof joist.

➁ The 58-1/2" overall dimension of the ducts allows ductwork penetration between roof joists that are spaced on 72" centers.

NOTE: Ducts can be installed onto the curb from the roof. All electrical and gas line connections can be made inside the curb.

BASE RAIL3.56"

3.69"

530.18-TG3L


TYPICAL APPLICATIONS

TYPICAL ROOF-TOP INSTALLATION (GAS/ELECTRIC UNIT SHOWN)

530.18-TG3L


530.18-TG3L


530.18-TG3L


Subject to change without notice. Printed in U.S.A.Copyright by Unitary Products Group 1995. All rights reserved. 530.18-TG3L (500)Code: EBL

Supersedes: 530.18-TG3L (793)Unitary 5005 Interstate NormanProducts Drive OklahomaGroup North 73069

Documents

DESCRIPTION SINGLE PACKAGE GAS / ELECTRIC … · 530.18-TG3L (500) Cont’d. DESCRIPTION These units are convertible single package units. All models have dual refrigerant circuits