Summary of the content on the page No. 1
Air-Cooled Condenser
Installation & Operation
Bulletin No. H-IM-90 August 2008 Part Number 25007301
Replaces.H-IM-90,.March.2006
Table of Contents
Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 . . . . . . . . . . . . . .
System.Warranty .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Summary of the content on the page No. 2
Inspection Unit Location Responsibility.should.be.assigned.to.a.dependable.individual.at. Units.are.designed.for.outdoor.application.and.may.be.mounted. the.job.site.to.receive.material ..Each.shipment.should.be.carefully. on.a.roof.or.concrete.slab.(ground.level.installation) ...Roof. mounted.units.should.be.installed.level.on.steel.channels.or.an. checked.against.the.bill.of.lading .. The.shipping.receipt.should. not.be.signed.until.all.items.listed.on.the.bill.of.lading.have.been. I-beam.
Summary of the content on the page No. 3
Drawing 1. Rigging Instructions 3
Summary of the content on the page No. 4
Space and Location Requirements The.most.important.consideration.which.must.be.taken. Another.consideration.which.must.be.taken.is.that.the.unit. into.account.when.deciding.upon.the.location.of.air-cooled. should.be.mounted.away.from.noise.sensitive.spaces.and.must. equipment.is.the.provision.for.a.supply.of.ambient.air.to.the. have.adequate.support.to.avoid.vibration.and.noise.transmission. condenser,.and.removal.of.heated.air.from.the.condenser.area .. into.the.building ..Units.should.be.mount
Summary of the content on the page No. 5
Notes: Typical Arrangements Figure.1.illustrates.a.typical.piping.arrangement.involving.a. 1 .. All.oil.traps.are.to.be.as.short.in.radius.as.. . remote.condenser.located.at.a.higher.elevation,.as.commonly. . possible ..Common.practice.is.to.fabricate.the.. . encountered.when.the.condenser.is.on.a.roof.and.the.compressor. . trap.using.three.90.degrees.ells . . and.receiver.are.on.grade.level.or.in.a.basement.equipment. room .. 2 .. Pressure.relief.valves.are.recommended.at.the.. . . . condenser.
Summary of the content on the page No. 6
Discharge Lines The.proper.design.of.discharge.lines.involves.two.objectives:. 1 .. To.minimize.refrigerant.pressure.drop,.since.high.. . 2 .. To.maintain.sufficiently.high.gas.velocity.to.carry.oil.. pressure.losses.cause.increased.compressor.. . . . through.to.the.condenser.coil.and.receiver.at.all.loading.. horsepower.per.ton.of.refrigerant . . conditions . Table 1. Tons of Refrigeration Line Size Discharge Line Drain Line Type L Copper Velocity 100 FPM Refrigerant R-22 Sat. Suction Temp
Summary of the content on the page No. 7
Diagram 1. Typical Condenser Wiring Diagram with Fan Cycle Controls 7
Summary of the content on the page No. 8
Start-Up Fan Cycling Check.for.proper.fan.rotation ...Air.is.drawn.through.the.coil.on.all. A.decrease.in.ambient.air.temperature.results.in.a.capacity. units ...Be.sure.the.fans.turn.freely . . increase.in.the.air-cooled.condenser .. This.capacity.increase.is. . directly.proportional.to.the.temperature.difference.between.the. Rotation.of.the.motors.and.blades.should.be.in.a.“CW”.direction. condensing.temperature.and.the.temperature.of.the.ambient. looking.at.the.unit.from.the.blade.side ..
Summary of the content on the page No. 9
Fan Cycling Head Pressure Controls Flooding Head Pressure Controls Condenser.fans.are.cycled.to.maintain.adequate.head.pressure .. Another.means.of.head.pressure.control.is.to.change.the. Ambient.and.pressure.fan.cycling.are.available.as.optional. condenser.capacity.by.filling.the.inside.of.the.condenser.with. equipment . . liquid.refrigerant ..Flooding.controls.are.ideal.for.condensers. . operating.in.low.ambient.conditions.(beyond.the.limits.of.fan. Ambient.fan.cycling.cycles.fans.in.respo
Summary of the content on the page No. 10
Table 3. Minimum Ambient for Fan Cycling Numb er of Fans Single Double Design T.D.* Row Row 30 25 20 15 10 . 2. 4. 35. 45. 55. 60. 70 . 3. 6. 15. 30. 40. 55. 65 . 4. 8. 0. 15. 30. 45. 60 . 5. 10. 0. 10. 20. 35. 55 . 6./.7. 12./.14. 0. 0. 10. 30. 50 *.Based.on.maintaining.90°F.minimum.condensing.temperature . Table 4. Mechanical Fan Cycling Thermostat Settings ......... . Number of Fans Single Double Design Thermostat Setting Row Rows T.D. 1 2 3 4 5 . 2. 4. 30. 60 . .
Summary of the content on the page No. 11
Table 5. Electronic Fan Cycling Thermostat Settings * Number of Fans A350 S350 Temperature Stage Modules Single Double Design Set Offset Settings Row Rows T.D. Point 2 3 4 5 . . . 30. 60 . . . 25. 65 . 2. 4. 20. 70 . . . 15. 75 . . . 10. 80 . . . 30. 60. 20 . . . 25. 65. 10 . 3. 6. 20. 70. 10 . . . 15. 75. 10 . . . 10. 80. 15 . . . 30. 60. 10. 30 . . . 25. 65. 10. 25 . 4. 8. 20. 70. 5. 20 . . . 15. 75. 5. 15 . . . 10. 80. 5. 10 . . .
Summary of the content on the page No. 12
Table 7. Refrigerant Charge for Fan Cycling plus Flooded Condenser (lbs. R-22) 25° TD 20° TD 15° TD 10° TD Summer Model* Charge 40°F 20°F 0°F -20°F 40°F 20°F 0°F -20°F 40°F 20°F 0°F -20°F 40°F 20°F 0°F -20°F 1 8 7 8 9 9 8 9 10 10 9 10 11 11 13 12 12 12 2 10 9 12 13 14 11 13 14 15 13 14 15 16 17 18 17 18 3 10 1 6 8 10 4 8 10 11 7 10 12 13 10 13 14 14 4 15 2 9 12 15 7 12 15 17 12 16 18 19 17 19 21 22 5 29 4 17 24 29 14 24 30 34 24 31 36 39 33 38 41 43 6 22 0 3 10 15 0 10 16 20 0 17 22 25 0 24 27
Summary of the content on the page No. 13
Table 9. Flooded Charge Temperature Difference Factor Design T.D. Ambient, °F 30 25 20 15 10 +60 – 0 .38 1 .0 1 .74 2 .46 +40 0 .59 0 .80 1 .0 1 .19 1 .40 +20 0 .76 0 .88 1 .0 1 .13 1 .25 0 0 .84 0 .91 1 .0 1 .07 1 .16 -20 0 .88 0 .93 1 .0 1 .05 1 .13 Table 10. Model Cross Reference Model Reference *NH *NL *NX *NQ *NE 1 *NH-S01-A007 *NL-S01-A007 *NX-S01-A006 *NQ-S01-A005 *NE-S01-A008 2 *NH-S01-A009 *NL-S01-A008 *NX-S01-A008 *NQ-S01-A006 *NE-S01-A009 3 *NH-S02-A011 *NL-S02-A010 *NX-S02-A010 *NQ-S
Summary of the content on the page No. 14
In-Warranty Return Material Procedure Material.may.not.be.returned.except.by.permission. of.authorized.factory.service.personnel.of.Heatcraft. Refrigeration.Products.in.Stone.Mountain,.Georgia ..A. “Return.Goods”.tag.will.be.sent.to.be.included.with.the. returned.material ..Enter.the.required.information.on.the. tag.in.order.to.expedite.handling.at.our.factories.and. prompt.issuance.of.credits ...All.parts.shall.be.returned. to.the.factory.designated.on.the.“Return.Goods”.tag,. transportation
Summary of the content on the page No. 15
E Series Motors with Integrated Variable Speed E.Series.units.use.an.EC.motor/fan.blade.combination.to.provide.variable.speed.condenser.control ...All.components.required. to.run.the.motor.at.variable.speeds.are.built.into.the.motor . Warning! When.connecting.the.unit.to.the.supply.power,.. . dangerous.voltages.occur ..Do.not.open.the.motor.within.. . the.first.5.minutes.after.disconnection.of.all.phases . Be sure that the unit is isolated. Warning! Dangerous.external.voltages.can.be.present..
Summary of the content on the page No. 16
Integration constant The.integration.constant.switch.provides.ability.to.change. controller.from.a.proportional.only.control.to.a.proportional. plus.integral.control .. To.provide.the.most.responsive.system. to.maintain.a.stable.head.pressure,.it.is.recommended.this. setting.be.left.on.“fast . ” . Head Pressure Setpoint The.head.pressure.setpoint.potentiometer.is.adjustable. from.90-250.psig ...A.typical.setpoints.are.from.170-200.psig ... Reverse acting or direct acting mode of operation Note:.
Summary of the content on the page No. 17
Master/Slave Configuration EC Motor Wiring The.EC.motor.control.signals.are.wired.in.a.Master/ Slave.configuration ... This.configuration.allows.for.the. All.EC.motor.wiring.is.done.at.the.factory ...If.any.motor. maximum.sound.and.energy.reduction.as.well.as.the. wiring.needs.to.be.done.in.the.field,.the.diagram.below. most.stable.head.pressure.control ... The.control.signal.is. indicates.the.terminal.pin.configurations.inside.the. delivered.to.the.master.motor.(located.at.the.header.end. motor
Summary of the content on the page No. 18
Diagram 2. Typical 1 x 4 EC M TYPICAL ot 1X4 EC MOT or Wiring with 0-10V DC C OR WIRING ontrol Signal WITH 0-10V DC CONTROL SIGNAL CONTROL WIRING POWER WIRING 0 - 10V DC L1 CONTROL 3Ø POWER SIGNAL L2 SUPPLY L3 PE KL3 KL2 KL1 PE 12 11 10 9 8 7 6 5 4 3 2 1 3 2 1 3 2 1 FAN 1 (HEADER FAN) L1 3Ø POWER L2 SUPPLY BLK L3 RED PE KL3 KL2 KL1 PE 12 11 10 9 8 7 6 5 4 3 2 1 3 2 1 3 2 1 FAN 2 L1 3Ø POWER L2 SUPPLY BLK L3 RED PE KL3 KL2 KL1 PE 12 11 10 9 8 7 6 5 4 3 2 1 3 2 1 3 2 1 FAN 3 L1 3Ø POWER L2 SUPPLY
Summary of the content on the page No. 19
KL3 KL3 KL3 KL3 KL3 KL3 KL3 KL3 KL3 KL3 SENSOR BLK BLK BLK BLK BLK BLK BLK BLK BLK BLK RED RED RED RED RED RED RED RED RED RED Diagram 3. Typical EC Condenser Wiring Diagram with External Signal 3ÿ/60Hz FAN MOTOR IDENTIFICATION 5 4 3 2 1 USE COPPER CONDUCTORS ONLY FACTORY WIRING FIELD WIRING DISCONNECT SWITCH L1 L2 L3 FAN SPEED CONTROL CIRCUIT 0 to 10V DC T1 T2 T3 TERMINAL T1 T2 BOARD 1 TERMINAL BOARD 2 M1 8 - GND 7 - 0-10V PWM 2 - GND 1 - OUT M2 8 - GND 7 - 0-10V PWM 2 - GND F5 F4 F3 F2 F1 1 -
Summary of the content on the page No. 20
Installation Check List Condenser Start Up Date Model # Serial # Electrical Voltage Amperage Installer: Name & Address Telephone: Please retain this information with the condenser. Since.product.improvement.is.a.continuing.effort,.we.reserve.the.right.to.make.changes.in. specifications.without.notice . ™ The name behind the brands you trust. CLIMATE Commercial Refrigeration Parts CONTROL 20 H-IM-90-0808.
