Related Manuals for Zamil CNX150
Summary of Contents for Zamil CNX150
- Page 1 INSTALLATION, OPERATION & MAINTENANCE MANUAL AIR COOLED CONDENSING UNITS 'CNX' SERIES PL-OM-CNX-07-1M-E...
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Page 2: Table Of Contents
INDEX Contents Page Model decoding ............................2 Physical data ............................3-4 Electrical data ............................5 Dimensions ............................6-13 Microprocessor control system ....................... 14 User sequence of operation ........................15 Typical schematic wiring diagram ...................... 16-23 Field wiring connections ......................... 24 Rigging instructions &... -
Page 3: Model Decoding
MODEL DECODING 4, 5 & 6 1, 2 & 3 NOMINAL BASIC SPECIAL OPTIONS MANUFACTURING YEAR ELECTRICAL GENERATION CODE COOLING SUPPLY CAPACITY* ( V-Ph-Hz ) (MBH) F : 460-3-60 Z :SPECIAL OPTIONS CONDENSING UNIT **M00 **M10 **M20 **M40 **M60 ***2M00 ***2M40 * Capacity in MBH (MBH x 1000 = BTUH). -
Page 4: Physical Data
PHYSICAL DATA MODEL NUMBER CNX150 CNX220 CNX240 CNX300 CNX360 CNX420 CNX480 CNX540 CNX600 NOMINAL CAPACITY , TONS NUMBER OF REFRIGERATION CIRCUIT Dual Dual Dual Dual Dual Dual Dual Dual Dual COMPRESSOR Type Scroll Semi-hermetic reciprocating Oil per system (liters) 4.68 4.68... - Page 5 PHYSICAL DATA MODEL NUMBER CNX720 CNX840 CNXM00 CNXM10 CNXM20 CNXM40 CNXM60 CNX2M00 CNX2M40 NOMINAL CAPACITY , TONS NUMBER OF REFRIGERATION CIRCUIT Dual Dual Dual Dual Quadruple Quadruple Quadruple Quadruple Quadruple COMPRESSOR Type Semi-hermetic reciprocating Screw Oil per system (liters) 4.94 4.94 4.94 4.94...
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Page 6: Electrical Data
ELECTRICAL DATA SUPPLY VOLTAGE COMPRESSOR MOTOR CONDENSER FAN MOTORS UNIT Nominal SIZE Min. Max. MOCP Qty. Qty. (V-Ph-Hz) (each) (each) (each) (each) 25.7 11.4 0.66 460-3-60 CNX 150 460-3-60 39.0 15.9 0.86 CNX 220 45.7 18.1 1.45 10.0 460-3-60 CNX 240 56.1 22.7 1.45... -
Page 7: Dimensions
DIMENSIONS CNX 150 - CNX 300 CNX 360 - CNX 420 "A" "B" "C" 73 [2.875] 2121 [83.50] [37.125] [37.125] 2197 2032 [86.50] [80.0] NOTES: 1. All dimensions are in mm, (dimensions in brackets are in inches). 2. Allow 48" (1219 mm) clearance on all sides for proper airflow. - Page 8 DIMENSIONS CNX 480 - CNX 600 2121 [83.50] 2197 [86.50] CNX 720 - CNX 840 TOP VIEW "B" "C" 73 [2.875] (37.99") (38.11") (38.11") SIDE VIEW FRONT VIEW NOTES: 1. All dimensions are in mm, (dimensions in brackets are in inches). 2.
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Page 15: Microprocessor Control System
MICROPROCESSOR CONTROL SYSTEM Each condensing unit are provided with microprocessor based control board that monitors analog and digital inputs to achieve precise control and safety functions during unit’s operation. Input signals for cooling control can be digital signals coming from a thermostat device or analog signals from a PTC temperature sensor. The push button key board allows accessing to the operating conditions, control set points (in case temperature control is analog signal), &... -
Page 16: User Sequence Of Operation
USER SEQUENCE OF OPERATION On/Off Menu CLASSIC AIR CONDITIONERS TOUT = 10°C TIN = 15°C COOLING 75% Machine Starting: If OFF, the machine is started by pushing the ON/OFF button. The ON LED (green) will lit. On the main screen is showed the status “STARTING”. After 15 seconds of delay the system will be running. -
Page 17: Typical Schematic Wiring Diagram
SCHEMATIC WIRING DIAGRAM POWER SUPPLY : 460-3-60 (Dual compressor units) APPLICABLE ON MODELS: CNX150 - CNXM10 COMPRESSOR WITH CB CONNECTION HVTB (OPTIONAL) HVTB POWER SUPPLY (NOTE 4) LUG/ETB OLR1 OLR2 OLR1 OLR2 COMP COMP COMP COMP COMPRESSOR POWER & CONTROL CONNECTION IN PART WINDING STARTING (PWS) - Page 18 SCHEMATIC WIRING DIAGRAM POWER SUPPLY : 460-3-60 (Dual compressor units) APPLICABLE ON MODELS: CNX150 - CNXM10 TO ATB LEGEND AIR HANDLING UNIT SWITCHING CONTACTS FROM THERMOSTAT OR DDC TRANS1 (FIELD INSTALLATION) (75VA) AUXILIARY TERMINAL BLOCK 230V LVTB BLOWER MOTOR RELAY...
- Page 19 SCHEMATIC WIRING DIAGRAM POWER SUPPLY : 460-3-60 (Four compressor units) APPLICABLE ON MODELS: CNXM20 - CNXM60 COMPRESSOR POWER & CONTROL CONNECTION HVTB / BUSBAR POWER SUPPLY (NOTE 4) OLR1 OLR2 OLR3 OLR4 COMP COMP COMP COMP CONDENSER FAN MOTOR POWER & CONTROL CONNECTIONS - 6 FANS / CNXM20 FAN LAYOUT COMP1 COMP2...
- Page 20 SCHEMATIC WIRING DIAGRAM POWER SUPPLY : 460-3-60 (Four compressor units) APPLICABLE ON MODELS: CNXM20 - CNXM60 TO HVTB TO HVTB TRANS2 460V 230V C.HTR1 100A CC1A-1B UVM CONNECTION (OPTIONAL) C.HTR2 CC2A-1B 100B C.HTR3 CC5A-1B 100C Ø Ø Ø C.HTR4 100D CC6A-1B UVM-1 Ø...
- Page 21 4. FUSED DISCONNECT SWITCH OR CIRCUIT (VOLT-FREE CONTACT) BREAKER TO BE PROVIDED BY END USER WITH R9(DIG OUT) REFER FAN MOTOR CONTROL CONNECTION (SYSTEM 3) RATING AS RECOMMENDED BY ZAMIL. (SHEET 1 OF 3) R10(DIG OUT) 10NO 5. USE DISCONNECT TAB OR SPLICE ONLY...
- Page 22 SCHEMATIC WIRING DIAGRAM POWER SUPPLY : 460-3-60 (Four compressor units) APPLICABLE ON MODELS: CNX2M00 - CNX2M40 COMPRESSOR POWER & CONTROL CONNECTION IN PART WINDING STARTING (PWS) HVTB / BUSBAR POWER SUPPLY (NOTE 4) OLR1 OLR3 OLR2 OLR4 OLR5 OLR7 OLR6 OLR8 COMP COMP...
- Page 23 SCHEMATIC WIRING DIAGRAM POWER SUPPLY : 460-3-60 (Four compressor units) APPLICABLE ON MODELS: CNX2M00 - CNX2M40 TO HVTB TO HVTB TRANS2 460V 230V C.HTR1 CC1A-1B 100A UVM CONNECTION (OPTIONAL) C.HTR2 CC2A-1B 100B C.HTR3 CC5A-1B 100C Ø Ø Ø C.HTR4 CC6A-1B 100D UVM-1 Ø...
- Page 24 R9(DIG OUT) BREAKER TO BE PROVIDED BY END USER WITH REFER FAN MOTOR CONTROL R10(DIG OUT) CONNECTION (SYSTEM 3) 10NO RATING AS RECOMMENDED BY ZAMIL. (SHEET 1 OF 3) R11(DIG OUT) 11NO 5. USE DISCONNECT TAB OR SPLICE ONLY R12(DIG OUT)
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Page 25: Field Wiring Connections
TYPICAL HIGH AND LOW VOLTAGE FIELD WIRING CONNECTIONS (REMOVE JP6) (REMOVE JP7) (REMOVE JP7) -
Page 26: Rigging Instructions & Weight Distribution
CAUTION All panels should be in place when rigging. Care must be taken to avoid damage to the coils during handling. Insert packing material between coils & slings as necessary. MODELS: CNX150 - CNX840 MODELS: CNXM00 - CNX2M00 MODELS: CNX2M40... -
Page 27: Load Distribution
LOAD DISTRIBUTION, kg. (ALUMINUM CONDENSER COIL) MODEL No. CNX150 CNX220 CNX240 CNX300 CNX360 CNX420 CNX480 CNX540 CNX600 CNX720 CNX840 CNXM00 CNXM10 CNXM20 CNXM40 CNXM60 CNX2M00 CNX2M40 LOAD DISTRIBUTION, kg. (COPPER CONDENSER COIL) MODEL No. CNX150 CNX220 CNX240 CNX300 CNX360 CNX420... -
Page 28: Installation Instructions
& moisture enter the system as easter oil are hygroscopic in nature. Equipment must be installed so as to allow for service access and air circulation in accordance with these instructions and other Zamil publications for the specific equipment being installed. These units are charged with ozone friendly R-134a refrigerant. -
Page 29: Start-Up Inspection & Check List
2. It is important to first determine the amount of refrigerant required for the system, the unit nameplate normally identify the weight of the refrigerant required. 3. The refrigerant should be added in small amounts allowing sufficient time for the unit pressure to equalize each time. WIRING All wiring must comply with the "National Electric Code"... -
Page 30: Check-Out & Operational Start-Up Procedure
• Duct Leakage Inside/Outside Building • Volume Dampers • Volume Damper Access Doors • Fire Dampers • Fire Damper Access Doors • Transfer Grilles/Door Grilles • Duct Insulation/Liner • Diffusers/Grilles • Duct Humidistat • Filter flag CHECK-OUT & OPERATIONAL START-UP PROCEDURE After the completion of inspection and check list, the following points should be covered before system is placed in operation. -
Page 31: Electrical Power Supply
ELECTRICAL ELECTRIC POWER SUPPLY All wiring should be in accordance with National Electric Code and local standards. Before making an installation, check the electric power supply. The power supply must be of the same characteristics as that on the nameplate. Normally the wire size used establishes the circuits maximum permissible load. -
Page 32: Motor Contactor
MOTOR CONTACTOR The motor controller (contactor) is a load current carrying device which makes and breaks to start and stop the compres- sor motor. The magnetic coil of the controller is energized to make and break the contactor contacts. Frequently, motor contactors are subjected to quick cycling due to various causes. -
Page 33: Refrigeration
REFRIGERATION COMPRESSOR Scroll compressors are used as standard for models CNX150 - CNX300 and semi-hermetic reciprocating compressors are standard for models CNX360 - CNX2M00 except for model CNX2M40 available with semi-hermetic compact screw compressors. All compressors are conforming to ARI 540. The compressors are equipped with internal motor protection;... -
Page 34: High & Low Pressure Protection
Start the compressor, allowing it to operate long enough to pump down to approximately 1 PSIG. Shut the compressor off and observe the compound gauge. The gauge pressure may build rapidly. Repeat the pump down process several times observing the gauge pressure each time after the compressor stops. If the gauge pressure builds rapidly each time after the compressor stops, it indicates that the compressor discharge valves are not holding and refrigerant is leaking from the high side to the low side of the compressor. -
Page 35: Pump Down Control
Should the control open, it will remain open until the pressure in the system is lowered to 300 psig. Tripping of the high pressure control is normally due to: 1. Restricted condenser coil. 2. Overcharge of refrigerant. 3. Defective fan motor or fan capacitor. 4. -
Page 36: Trouble Shooting Chart
TROUBLE SHOOTING CHART SYMPTOM CAUSES CHECK & CORRECTIVE MEASURE Compressor will not start – no 1. Line disconnect switch open. 1. Close start or disconnect switch. hum. 2. Overload protector tripped. 2. Refer to electrical section. 3. Control stuck in open position. 3. - Page 37 TROUBLE SHOOTING CHART SYMPTOM CAUSES CHECK & CORRECTIVE MEASURE Units runs OK, but short 1. Overload protector. 1. Check the cause. cycles on. 2. Thermostat. 2. Differential set too close - widen. 3. High pressure cut-out due to: 3. (a) Check airflow to the condenser correct.
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Page 38: Trouble Shooting Chart
TROUBLE SHOOTING CHART SYMPTOM CAUSES CHECK & CORRECTIVE MEASURE Loss of oil pressure. 1. Loss of oil from compressor due to: 1. (a) Correct the system piping. (a) Oil trapping in system. (b) Trace out the wiring/defective controls/ components, etc. and correct it. (b) Compressor short cycling. -
Page 39: Parts List
PARTS LIST MODEL NUMBER CNX150F CNX220F CNX240F CNX300F CNX360F CNX420F CNX480F CNX540F CNX600F COMPRESSOR 80061402 80061408 80061411 80061414 80069717 80069720 80069723 80069726 80069729 COMPRESSOR CONTACTOR 80009857 80009861 80009861 80009863 80009863 80009865 80009865 80009865 80009867 CAPACITY UNLOADER KITS 80057700 80057700 80057700 80057700 80057700 COND. -
Page 40: Recommended Spare Parts
RECOMMENDED SPARE PARTS PERCENTAGE OF SPARE PARTS ITEM ONE YEAR SUPPLY TWO YEAR SUPPLY 100 UNITS 1000 UNITS 100 UNITS 1000 UNITS Compressor Condenser fan motor Contactor compressor Contactor fan motors HPS/Sensor/Transducer Expansion valve Filter drier Transformer (24V secondary) Propeller fan Heater-crankcase NOTE : When ordering spare parts, please quote the complete model number on the unit nameplate. -
Page 41: Preventive Maintenance Schedule
PREVENTIVE MAINTENANCE SCHEDULE FREQUENCY OF MAINTENANCE, MONTHS I T E M Clean air filters & replace if required. Clean evaporator coil, drain pan & drain line. Clean condenser coil. Check blower belt/tension/wear/crack and replace it, if required. Lubricate blower motor/condenser motor (if applicable). Check alignment of pulleys. -
Page 42: Material Safety Data Sheet
MATERIAL SAFETY DATA SHEET SAFETY DATA REFRIGERANT R134a Toxicity Liquid splashes or spray may cause freeze burns. Unlikely to be hazardous by skin absorp- In Contact With Skin tion. Thaw affected areas with water. Remove contaminated clothing carefully - may adhere to skin in case of freeze burns. -
Page 43: Pressure Temperature Chart
PRESSURE TEMPERATURE CHART, R-134a TEMPERATURE ( PRESSURE TEMPERATURE ( PRESSURE PSIA PSIG Kpa (Absolute) Kpa (Gauge) 21.2 -17.78 146.2 44.9 22.2 -16.67 153.2 51.8 23.3 -15.56 160.4 59.1 24.3 -14.44 167.9 66.6 25.5 10.8 -13.33 175.7 74.3 26.6 11.9 -12.22 183.7 82.4 27.8... -
Page 44: Pressure Temperature Chart
PRESSURE TEMPERATURE CHART, R-134a TEMPERATURE ( PRESSURE TEMPERATURE ( PRESSURE PSIA PSIG Kpa (Absolute) Kpa (Gauge) 130.4 115.7 35.56 899.2 797.9 134.4 119.7 36.67 927.1 825.8 138.6 123.9 37.78 955.7 854.3 142.8 128.1 38.89 984.9 883.6 147.1 132.4 40.00 1014.8 913.4 151.6 136.9...