York CU096 User Manual Download

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INSTALLATION
INSTRUCTION

CAUTION:

READ ALL SAFETY GUIDES BEFORE YOU
START TO INSTALL THE UNIT.

SAVE THIS MANUAL

WATER COOLED AIR

CONDITIONING UNITS

MODELS: CU060 - 096 - 120 -180

240 - 300

036-33072-001 Rev. A (0601)

CONTENTS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

GENERAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

DIMENSIONAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

WATER PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

EVAPORATOR BLOWER DISCHARGE
CONVERSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . . . . . . . . 12

MOTOR AND PULLEY DATA . . . . . . . . . . . . . . . . . . . . 16

MAINTENANCE/SERVICE . . . . . . . . . . . . . . . . . . . . . . 19

Summary of Contents for CU096

Page 1: ...ANUAL WATER COOLED AIR CONDITIONING UNITS MODELS CU060 096 120 180 240 300 036 33072 001 Rev A 0601 CONTENTS GENERAL 3 INSTALLATION 4 GENERAL DATA 5 DIMENSIONAL DATA 6 WATER PIPING 8 DUCTWORK 11 EVAPORATOR BLOWER DISCHARGE CONVERSION 12 ELECTRICAL WIRING 12 MOTOR AND PULLEY DATA 16 MAINTENANCE SERVICE 19 ...

Page 2: ...IONAL DATA 6 WATER PIPING 8 CONDENSOR PRESSURE CONTROL 9 DUCTWORK 11 SUPPLY AIR I RETURN AIR CONFIGURATION 11 EVAPORATOR BLOWER DISCHARGE CONVERSION 12 ELECTRICAL WIRING 12 MOTOR AND PULLEY DATA 16 BLOWER SPEED ADJUSTMENT 16 START UP AND OPERATION 16 MAINTENANCE SERVICE 19 FILTERS 19 EVAPORATOR AND CONDENSER COILS 19 BLOWERS 19 DRIVE BELTS 19 REFRIGERANT CIRCUIT S 19 Tables GENERAL UNIT INFORMATIO...

Page 3: ...ressure switches All models are equipped with an adjustable thermal expansion valve with external equalizer one valve per circuit Each refrigerant cir cuit is also equipped with a liquid line filter drier sight glass moisture indicator and service access ports An electrically re setable lock out relay will shut off the compressor in the event of pressure switch trip during operation Control circui...

Page 4: ... no leaks have occurred during shipment Install gauge set to high and low pressure ports to confirm pressure has been maintained and no leaks have occurred during shipment Repair any damage prior to installation to ensure safe operation NOTE Record any unit damage on the Bill of Lading and report to carrier and factory immediately Shipping and han dling damages are not warranty items RIGGING Units...

Page 5: ... these units outdoors or in any area where the surrounding temperature may drop below 32 degrees F LOCK ALL ELECTRICAL POWER SUPPLY SWITCHES IN THE OFF POSITION BEFORE INSTALLING THE UNIT FAILURE TO DISCON NECT POWER SUPPLY MAY RESULT IN ELEC TRICAL SHOCK OR EVEN DEATH WARNING Model CU060 CU096 CU120 CU180 CU240 CU300 Nominal Cooling Ton 5 8 10 15 20 25 Cooling Performance Gross Cooling Capacity B...

Page 6: ...036 33072 001 Rev A 0601 6 Unitary Products Group DIMENSIONAL DATA FIGURE 2 DIMENSIONS CU060 CU096 CU120 ...

Page 7: ...036 33072 001 Rev A 0601 Unitary Products Group 7 FIGURE 3 DIMENSIONS CU180 ...

Page 8: ...be provided on the water supply and return lines if noise and vibration trans mission could be a problem Water piping should include shutoff balancing valves so that the unit can be serviced without shutting down and draining the entire water supply circuit Since units are piped in paral lel piping circuits the shutoff valves may be used to equalixe the pressure drop to each branch for even conden...

Page 9: ...djusting screw clockwise will lower the opening point and lower the condensing pressure being maintained If mains water is being used make sure the valve closes soon after the compressor stops If the flow does not stop after a few minutes raise the opening pressure by turning the adjusting shaft caunter clockwise until the flow stops If the unit is running on mains water we recommend adjust ing th...

Page 10: ...036 33072 001 Rev A 0601 10 Unitary Products Group FIGURE 5 WATERSIDE PRESSURE DROP STANDARD UNIT MANIFOLDED CONDENSERS ...

Page 11: ...om the con ditioned space 5 15 ton models with optional return air grille or mechanical room 20 and 25 ton models If a ducted return is desired duct connection flanges may be secured directly to the air intake opening of the 5 through 15 ton units filters are accessible from the right hand side The filter frame on 20 and 25 ton models has duct attachment flanges incorporated into the filter rack S...

Page 12: ...tion In order to utilize the rear vertical or rear horizontal dis charge on 5 through 15 ton models the upper fan module must be rotated a Disconnect power wiring at motor terminal box b Remove corner connecting brackets which secure the blower module to the lower evaporator unit c Carefully lift the blower module and rotate 1800 Reposition the blower module on top of the evapora tor compressor un...

Page 13: ...s utilizing space or return air thermostatic controls A low volt age terminal block is provided for hook up of conventional or programmable thermostats The CU6300 25 ton models feature three independent com pressor stages A multi stage commercial thermostat ie Honeywell T7300 series or other type of multi step control ler is recommended for use with these models Alternatively two of the three comp...

Page 14: ...0 1800 64 65 31 20 25 23 80 40 30 CU240A 208 230 3 60 460 3 60 575 3 60 2 2 2 33 6 17 3 13 5 225 0 114 0 80 0 5 00 5 00 5 00 14 0 6 6 5 7 1800 1800 1800 89 60 45 53 36 08 110 60 45 CU300A 208 230 3 60 460 3 60 575 3 60 3 3 3 32 1 16 4 12 0 195 0 95 0 80 0 7 50 7 50 7 50 22 2 10 8 8 4 1800 1800 1800 126 53 64 10 47 40 150 80 50 MODEL VOLTAGE COMPRESSOR EVAPORATOR MIN CCT MAX FUSE QTY RLA LRA HP RLA...

Page 15: ... 77 760 1 91 797 2 05 837 2 21 878 2 38 919 2 54 960 2 70 1001 2 87 1040 3 05 CU180A 5400 645 1 52 709 1 79 770 2 06 829 2 35 885 2 65 939 2 96 991 3 28 1042 3 61 1092 3 96 1140 4 32 1190 4 71 6000 700 2 00 759 2 30 815 2 60 870 2 91 922 3 23 973 3 56 1022 3 90 1070 4 25 1116 4 62 1162 4 99 6600 761 2 63 815 2 94 867 3 26 917 3 60 966 3 94 1014 4 29 1060 4 66 1104 5 02 CU240A 7200 659 2 10 714 2 3...

Page 16: ...ll rotate in either direction depending upon phasing of the power Since there is a 50 50 chance of connecting power in such a way as to cause rota tion in the reverse direction it is important to ensure proper rotation direction is achieved when the system is installed and operated Verification of proper direction is made by observing that suc tion pressure drops and discharge pressure rises when ...

Page 17: ...rnal protector will trip If opposite rotation is needed disconnect and reverse any two leads of the three phase supply Reconnect power and observe for correct rotation Observe unit operation and check for unusual noise or vibra tion TABLE 6 REFRIGERANT CHARGES TABLE 7 PRESSURE SWITCH SETTINGS ALL Ref Charge 5 TON 8 TON 10 TON 15 TON 20 TON 25 TON No of Cir cuits 1 2 2 2 2 3 Per Circuit LB 4 625 4 ...

Page 18: ...036 33072 001 Rev A 0601 18 Unitary Products Group FIGURE 7 TYPICAL WIRING DIAGRAM 208 230V 3PH 60 HZ ...

Page 19: ...ew is properly set Check that the blower wheel is tight on the shaft and that the hub set screws are properly torqued DRIVE BELTS Examine belts periodically for wear Glazed areas on the drive surfaces indicate overheating due to belt slippage Ideal tension is the lowest tension at which the belt will not slip under peak load conditions Over tensioning shortens belt and bearing life The tension on ...

Page 20: ...ject to change without notice Printed in U S A 036 33072 001 Rev A 0601 Copyright by Unitary Products Group 2000 All rights reserved Supersedes Nothing Unitary 5005 Norman Product York OK Group Drive 73069 ...

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