Heatcraft Refrigeration Products 25007301 Installation And Operating Manual Download

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Master/Slave Configuration

The.EC.motor.control.signals.are.wired.in.a.Master/

Slave.configuration ...This.configuration.allows.for.the.

maximum.sound.and.energy.reduction.as.well.as.the.

most.stable.head.pressure.control ...The.control.signal.is.

delivered.to.the.master.motor.(located.at.the.header.end.

of.the.unit) ...The.master.motor.relays.the.control.signal.to.

the.adjacent.slave.motor ...This.relay.is.done.until.the.last.

motor.is.reached ...As.each.slave.relays.the.control.signal,.

it.adjusts.the.signal.so.the.next.slave.will.run.slightly.

slower.than.the.upstream.motor ...The.end.result.of.this.is.

that.when.a.motor.receives.a.small.enough.signal,.it.will.

turn.off ...This.provides.built-in.fan.cycling .

Protective Features

The.EC.motors.have.many.built-in.protective.features .

The.EC.motors.have.functions.within.the.motor.to.

protect.against:

•.over-temperature.of.electronics

•.over-temperature.of.motor

•.incorrect.rotor.position.detection

With.any.of.these.failures,.the.motor.stops.electronically.

and.the.alarm.relay.is.switched ...With.one.of.these.

failures,.the..motor.WILL.NOT.automatically.restart ...To.

reset,.the.power.supply.has.to.be.switched.off.for.a.

minimum.20.seconds.once.the.motor.is.at.standstill .

Locked-rotor protection

As.soon.as.the.rotor.is.blocked,.the.motor.gets.switched.

off.electronically.and.the.alarm.relay.is.switched ..After.

de-blocking,.the.motor.WILL.restart.automatically .

Under-voltage protection

If.power.supply.voltage.falls.below.~150VAC/3Ø.(for.230V.

motors).or.~290VAC/3Ø.(for.460V.motors).for.5.seconds.

minimum,.the.motor.will.be.switched.off.electronically.

and.the.alarm.relay.is.switched ...If.power.supply.

voltage.returns.to.correct.values,.the.motor.WILL.restart.

automatically .

Phase failure

If.1.phase.fails.for.5.seconds.minimum,.the.motor.will.

be.switched.off.electronically.and.the.alarm.relay.is.

switched ...If.all.3.phases.return.to.correct.values,.the.

motor.WILL.restart.automatically.within.10-40.seconds .

EC Motor Wiring

All.EC.motor.wiring.is.done.at.the.factory ...If.any.motor.

wiring.needs.to.be.done.in.the.field,.the.diagram.below.

indicates.the.terminal.pin.configurations.inside.the.

motor.junction.box ..Terminals.in.shaded.area.are.not.

normally.used .

The.following.diagram.shows.typical.motor.wiring.for.a.1.

x.4.EC.condenser .

Summary of Contents for 25007301

Page 1: ... Flooded Charge Temperature Difference Factor 13 Additional Refrigerant Charges 13 Model Cross Reference 13 Maintenance 13 Cleaning Instructions 13 In Warranty Return Material Procedure 14 InterLink Parts List 14 E Series Motors with Integrated Variable Speed 15 Speed Adjustment Characteristics 15 External Control Signal 15 Proportional Pressure Control 15 Head Pressure Setpoint 16 Minimum Output ...

Page 2: ...ation Units are designed for outdoor application and may be mounted on a roof or concrete slab ground level installation Roof mounted units should be installed level on steel channels or an I beam frame to support the unit above the roof Use of vibration pads or isolators is recommended The roof must be strong enough to support the weight of the unit Concrete slabs used for unit mounting should be...

Page 3: ... Drawing 1 Rigging Instructions ...

Page 4: ...late freely and not be recirculated For proper air flow and access all sides of the unit should be a minimum of W away from any wall or obstruction It is preferred that this distance be increased whenever possible Care should be taken to see that ample room is left for maintenance work through access doors and panels Overhead obstructions are not permitted When the unit is in an area where it is e...

Page 5: ... riser discharge line may be used as shown in Figure 2 Line A should be sized to carry the oil at minimum load conditions and the line B should be sized so that at the full load conditions both lines would have sufficient flow velocity to carry the oil to the condenser For more complete information refer to the ASHRAE Handbook on Systems Figure 1 Figure 2 Notes 1 All oil traps are to be as short i...

Page 6: ...receiver at all loading conditions Table 2 Condensing Temperature Correction Factor Condensing Temperature Discharge Line R 22 R 502 R 404A R 507 R 407C R 410A R 134A 90 0 88 0 91 0 922 0 924 0 872 0 889 0 882 100 0 95 0 97 0 974 0 975 0 957 0 963 0 961 110 1 04 1 02 1 009 1 005 1 036 1 032 1 026 120 1 10 1 08 1 026 1 014 1 009 1 096 1 078 130 1 18 1 16 1 043 1 024 1 182 1 160 1 156 Table 1 Tons o...

Page 7: ... Diagram 1 Typical Condenser Wiring Diagram with Fan Cycle Controls ...

Page 8: ...ttings or set points If flooding valves are used with fan cycling they must be set to follow the fan cycling Recommended differential settings for ambient sensing thermostats are 5 F and a minimum of 35 PSIG differential for pressure switches However system or climate conditions vary and the controls may require further field adjustment to provide optimum system performance and prevent short cycli...

Page 9: ... a flooded head pressure control Condenser splitting is recommended as a seasonal adjustment controlled by ambient temperature An initial setting of 50 to 55 F with a 20 F differential is recommended A pressure switch is also provided as a backup control to prevent high head pressures from occurring during heavy load conditions On condensers with a single row of fans the control package consists o...

Page 10: ...ure 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 25 65 20 70 15 75 10 80 3 6 30 60 40 25 65 55 20 70 60 15 75 65 10 80 65 4 8 30 60 50 30 25 65 55 40 20 70 65 50 15 75 70 60 10 80 75 70 5 10 30 60 55 45 30 25 65 60 50 35 20 70 65 60 40 15 75 70 65 55 10 80 75 70 65 6 7 12 14 30 55 50 40 30 25 25 65 60 55 ...

Page 11: ... Number of Fans Control Settings Single Double Design Pressure Switch Cut In Settings Row Rows T D Refrigerant PC1 PC2 PC3 PC4 PC5 R134a 147 2 4 20 R22 215 R404A 220 R134a 147 155 3 6 20 R22 215 245 R404A 220 247 R134a 147 155 160 4 8 20 R22 215 231 247 R404A 220 238 255 R134a 147 153 156 160 5 10 20 R22 215 225 236 247 R404A 220 238 250 260 R134a 147 150 153 157 160 6 7 12 14 20 R22 215 223 230 2...

Page 12: ...3 59 18 58 0 7 27 42 0 25 42 54 0 43 57 66 0 61 71 79 19 104 0 0 17 44 0 12 47 69 0 43 77 95 0 74 107 119 20 140 0 0 22 57 0 16 62 91 0 57 102 125 0 99 141 157 21 125 0 0 0 30 0 0 34 67 0 0 77 105 0 0 120 141 22 172 0 0 0 39 0 0 44 88 0 0 100 137 0 0 156 186 23 201 0 0 0 11 0 0 16 74 0 0 74 137 0 0 132 200 24 236 0 0 0 0 0 0 0 57 0 0 0 135 0 0 0 213 See Model Cross Reference Table 10 Table 8 Refri...

Page 13: ...D06 A040 NQ D06 A031 NE D06 A046 18 NH D06 A051 NL D06 A048 NX D06 A045 NQ D06 A034 NE D06 A054 19 NH D08 A058 NL D08 A056 NX D08 A053 NQ D08 A041 NE D08 A062 20 NH D08 A068 NL D08 A065 NX D08 A061 NQ D08 A046 NE D08 A073 21 NH D10 A074 NL D10 A071 NX D10 A066 NQ D10 A052 NE D10 A079 22 NH D10 A088 NL D10 A083 NX D10 A076 NQ D10 A057 NE D10 A093 23 NH D12 A106 NL D12 A100 NX D12 A091 NQ D12 A069 N...

Page 14: ...handling at our factories and prompt issuance of credits All parts shall be returned to the factory designated on the Return Goods tag transportation charges prepaid The return of a part does not constitute an order for replacement Therefore a purchase order must be entered through your nearest Heatcraft Refrigeration Products representative The order should include part number model number and se...

Page 15: ...l Signal Contact control manufacturer for setup of external controller to provide 0 10 VDC control signal Wire the control signal to terminal board in unit control box See Diagram 3 for typical external signal control wiring Proportional Pressure Control Units with factory installed proportional pressure controls use a PI controller to vary the motor speed in order to maintain a constant desired h...

Page 16: ...pressure is below 200 psig the fans will be off When the system pressure reaches 250 psig the fans will be at full speed see Chart 1 below To make the fans ramp more slowly the throttling range should be increased see Chart 2 below To maximize sound reduction and energy savings and to provide the most stable control it is recommended this setting be left at 100 psig Motor RPM Chart 1 Ramp characte...

Page 17: ...ith one of these failures the motor WILL NOT automatically restart To reset the power supply has to be switched off for a minimum 20 seconds once the motor is at standstill Locked rotor protection As soon as the rotor is blocked the motor gets switched off electronically and the alarm relay is switched After de blocking the motor WILL restart automatically Under voltage protection If power supply ...

Page 18: ...B RS A 12 11 4 20mA 0 10V GND RS A RS B PWM 0 10V PWM 20V 10V OUT GND NC COM NO L2 L3 L1 PE KL3 10 9 7 8 6 5 3 4 2 1 1 3 2 KL2 2 3 1 KL1 PE RED BLK L1 RS B RS A 12 11 4 20mA 0 10V GND RS A RS B PWM 0 10V PWM 20V 10V OUT GND NC COM NO L2 L3 L1 PE KL3 10 9 7 8 6 5 3 4 2 1 1 3 2 KL2 2 3 1 KL1 PE L2 PE L3 3Ø POWER SUPPLY PE L2 SUPPLY L3 3Ø POWER L1 PE L2 SUPPLY L3 3Ø POWER L1 PE L3 3Ø POWER SUPPLY L2 ...

Page 19: ...ternal Signal Diagram 4 Typical EC Condenser Wiring Diagram with Proportional Pressure Control NOTE 1 UNIT MUST BE GROUNDED 2 TO BE FIELD FUSED REFER TO UNIT DATAPLATE FOR VOLTAGE 3 ALL MOTORS ARE INHERENTLY PROTECTED 4 USE 60 C WIRE 5 REFER TO LABEL ADJACENT FUSE HOLDER FOR REPLACEMENT USE COPPER CONDUCTORS ONLY FIELD WIRING FACTORY WIRING C FAN CONTACTOR M FAN MOTOR F FUSES R RELAY FCC FAN CYCLE...

Page 20: ...ht to make changes in specifications without notice CLIMATE CONTROL Commercial Refrigeration Parts The name behind the brands you trust H IM 90 0808 Condenser Start Up Date Model Serial Electrical Voltage Amperage Installer Name Address Telephone Please retain this information with the condenser ...

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