• Technical Manual MAC - 2010(60Hz)


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  • FileName: TM-MAC_Modular1001A-60Hz 2010.pdf [read-online]
    • Abstract: Technical Manual MAC - 2010(60Hz)Modular Air Cooled ChillerModels: MAC160A-960AMAC210A-1260AEngineered for flexibility and performance.TM Literature No.: TM-MAC-1001A(60Hz)

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Technical Manual MAC - 2010(60Hz)
Modular Air Cooled Chiller
Models: MAC160A-960A
MAC210A-1260A
Engineered for flexibility and performance.TM
Literature No.: TM-MAC-1001A(60Hz)
Supersedes: TM-MAC-0708A(60Hz)
Part No.: M08039110006
Contents
Nomenclature..............................................................................................................................2
Features.......................................................................................................................................3
Specifications .............................................................................................................................4
Sound Data..................................................................................................................................7
Operating Limit ...........................................................................................................................8
Performance Data .......................................................................................................................8
Outlines and Dimensions ........................................................................................................10
Wiring Diagrams .......................................................................................................................12
Refrigerant Circuit ....................................................................................................................15
Equipment Options ..................................................................................................................16
Troubleshooting .......................................................................................................................20
Exploded view & Part list .........................................................................................................21
Note: Installation and maintenance are to be performed only by qualified personnel who are familiar with
local codes and regulations, and experienced with this type of equipment.
Caution: Sharp edges and coil surfaces are a potential injury hazard. Avoid contact with them.
Warning: Moving machinery and electrical power hazard may cause severe personal injury or death.
Disconnect and lock off power before servicing equipment.
“McQuay” is a registered trademark of McQuay International. All rights reserved throughout the world.
© 2010 McQuay International.
Bulletin illustrations cover the general appearance of McQuay International products at the time of publication. We reserve the right to change
design and construction specifications at any time without notice.
1
Nomenclature
M AC 160 A (R) ---P XX----E
Export
Description
Power Supply
P: 208~230/3/60
Q: 460/3/60
Heat Pump
Omitted For Cooling Only
Series
Nominal Cooling Capacity
Air Cooled Chiller
McQuay
2
Features
MAC units are high thermodynamic engineering products, studied with high accuracy in balancing compressors,
condensers and evaporators in order to offer high performances and wide safety margins. The choice of the
materials and the equipment adopted for the products has been made without any compromis, for the purpose
of high quality and long service life. The products meet ISO 9001 and ISO 14001 requirements, and assurance
beyond any doubts of the high producing standards followed by McQuay.
Modular Design
MAC160A, MAC210A, designed as the 2 basic modules, can be combined with freedom to satisfy different load.
,
The maximum number of combination is 10 modules, however it s still very convenient to transport and install these
units by separating them into single ones.
High Flexiblity
The MAC units are available in sizes covering a range of nominal cooling capacity from 56 to 420 kW. And with
availability of many accessories, including advanced control and safety devices, the mac units are of high flexibility
for their installation in commercial, residential and industrial buildings. They can couple with different types of fan
coil or AHU, proving themselves to be ideal for various kinds of areas by modular combination.
Low Installation Cost
The units are completely assembled at factory, reducing the cost of installation on site. A firm steel base evenly
distributes the weight of the unit to the support points and allows simple installation by an easy access to the lifting
points.
Compressor
McQuay Modular Air Cooled Chiller is equipped with highly efficient, reliable and silent scroll compressor which
features an internal overload protection. The compressor adopts hermetic type to further eliminate operating noise
and vibration.
Air-cooled Condenser
The two air cooled condenser coils with V-shaped are made of staggered rows of 3/8" OD seamless copper tube,
mechanically expanded into slit aluminum fins to ensure optimum heat exchange capability.
Condenser Fan Motor
To achieve the high air charge requirement, the unit is equipped with the high airflow propeller fan which is made
of acryl styrene resin. The fan is direct driven by weatherproof three-phase motor to ensure a reliable continuous
operation.
Evaporator
The heat exchanger is made of stainless steel plates closely arranged and brazed together to ensure high heat
exchange efficiency. The complete heat exchanger is insulated with thermal closed cell nitric rubber foam to give
optimum thermal insulation.
Refrigerant Circuit
The refrigerant circuit is factory brazed and evacuated before accurately charged with R22 or R407C (optional)
to ensure optimum operating requirement. To ensure flawless continuous operation, each refrigerant circuit is
equipped with a carefully sized thermostatic expansion valve, or a capillary tube.
Additional Safety Protection
The modular air-cooled chillers are equipped with intelligently designed safety control to ensure continuous
safe operation. High and low pressure switch is provided to prevent the compressor damage resulting from both
abnormal high discharge head pressure and low pressure due to insufficient gas.
In addition, thermal and current overload protector are supplied with the units as well as phase sequencer protector.
3
Specifications
General Data
MODEL MAC160A MAC320A MAC480A MAC640A MAC800A MAC960A
Btu/h 191126 382253 573379 764505 955631 1146758
NOMINAL CAPACITY
kW 56 112 168 224 280 336
NOMINAL TOTAL INPUT POWER kW 22 44 66 88 110 132
NOMINAL RUNNING CURRENT A 70 140 210 280 350 420
POWER SOURCE V/Ph/Hz 208~230/3/60,460/3/60
REFRIGERANT TYPE R22
MATERIAL ELECTRO-GALVANIZED MILD STEEL
CASING FINISH EPOXY POLYESTER POWER
THICKNESS mm/inch 1.2/0.047
HEIGHT mm/inch 1785/70
UNIT
WIDTH mm/inch 1820/72
DIMENSION
DEPTH mm/inch 1000/40 2000/80 3000/120 4000/160 5000/200 6000/240
HEIGHT mm/inch 1940/76
PACKING
WIDTH mm/inch 1930/76
DIMENSION
DEPTH mm/inch 1150/44 2300/88 3450/132 4600/176 5750/220 6900/264
NET WEIGHT kg/lb 620/1366 1240/2732 1860/4098 2480/5464 3100/6830 3720/8196
GROSS WEIGHT kg/lb 670/1476 1340/2952 2010/4428 2680/5904 3350/7380 4020/8856
RUNNING WEIGHT kg/lb 640/1410 1280/2820 1920/4230 2560/5640 3200/7050 3840/8460
MODEL MAC210A MAC420A MAC630A MAC840A MAC1050A MAC1260A
Btu/h 238908 477816 716724 955631 1194539 1433447
NOMINAL CAPACITY
kW 70 140 210 280 350 420
NOMINAL TOTAL INPUT POWER kW 24.5 49 73.5 98 122.5 147
NOMINAL RUNNING CURRENT A 79 158 237 316 395 474
POWER SOURCE V/Ph/Hz 208~230/3/60,460/3/60
REFRIGERANT TYPE R22
MATERIAL ELECTRO-GALVANIZED MILD STEEL
CASING FINISH EPOXY POLYESTER POWER
THICKNESS mm/inch 1.2/0.047
HEIGHT mm/inch 1940/76
UNIT
WIDTH mm/inch 1940/76
DIMENSION
DEPTH mm/inch 1140/45 2280/90 3420/135 4560/180 5700/225 6840/270
HEIGHT mm/inch 2250/92
PACKING
WIDTH mm/inch 2140/46
DIMENSION
DEPTH mm/inch 1200/85 2400/170 3600/255 4800/340 6000/425 7200/510
NET WEIGHT kg/lb 730/1609 1460/3218 2190/4827 2920/6436 3650/8045 4380/9654
GROSS WEIGHT kg/lb 780/1718 1560/3436 2340/5154 3120/6872 3900/8590 4680/10308
RUNNING WEIGHT kg/lb 750/1653 1500/3306 2250/4959 3000/6612 3750/8265 4500/9918
NOTES:
1) ALL SPECIFICATIONS ARE SUBJECTED TO CHANGE BY THE MANUFACTURER WITHOUT PRIOR NOTICE.
2) ALL UNITS ARE TESTED AND COMPLY TO ISO 5151.
3) NOMINAL COOLING AND HEATING CAPACITY ARE BASED ON THE CONDITIONS BELOW:
a) COOLING: 27°C DB/19°C WB INDOOR AND 35°C DB/24°C WB OUTDOOR
b) HEATING: 20°C DB INDOOR AND 7°C DB/6°C WB OUTDOOR
4) RECOMMENDED NUMBER OF THE UNITS CONNECTED IS 6. IF YOU HAVE TO CONNECT MORE UNITS, PLEASE CONTACT
SHENZHEN MCQUAY.
4
Components Data
MODEL MAC160A MAC320A MAC480A MAC640A MAC800A MAC960A
EVAPORATOR
TYPE BRAZED PLATE HEAT EXCHANGE
PLATE MATERIAL STAINLESS STEEL
MODEL NAME V25*40*40
WATER VOLUME m3/ft3 0.078/2.76 0.156/5.52 0.243/8.28 0.312/10.4 0.39/13.8 4.68/16.56
m³/h/US
NOMINAL WATER FLOW 9.61/0.71 19.22/1.42 28.84/2.13 38.448/2.84 48.06/3.55 57.67/4.26
GPM
WATER LINE (HYDRAULIC KIT)
INSTALLATION PIPE
mm/inch 32/1-1/4
PIPING CONNECTION
HEAD m 3
PIPE SIZE mm/inch 73.6/3
UNIT WATER PRESSURE DROP kPa/psi 125/18 127/18 129/19 131/19 133/19 135/20
CONDENSER COIL
TYPE TUBE+FIN
MATERIAL COPPER
TYPE INNER GROOVE
TUBE WALL THICKNESS mm/inch 0.36/0.01417
OUTER DIAMETER mm/inch 9.52/ 3/8
TUBE HEIGHT TH 36
MATERIAL ALUMINUM
THICKNESS mm/inch 0.11/0.00433
FIN
ROWS 3
FIN PER INCH 14
TOTAL FACE AREA  m2/ft2 2.75/29.6 5.5/59.2 8.25/88.8 11/118.4 13.75/148 16.5/177.6
CONDENSER FAN
TYPE/DRIVE AXIAL BIG VANE AND LOW NOISE BLOWER/DIRECT
QUANTITY 2 4 6 8 10 12
BLADE MATERIAL GALVANIZED STEEL
BLADE DIAMETER mm/inch 711.2/28″
POWER SUPPLY V/Ph/Hz 208~230/3/60;460/3/60
RATED RUNNING 208~230V A 4.5
CURRENT 460V A 2.2
RATED INPUT POWER W 1000
RATED OUTPUT POWER W 850
MOTOR POLES 6
CMH/
AIR VOLUME 26000/15058 52000/30116 78000/45174 104000/60232 13000/75290 156000/90348
CFM
COMPRESSOR
TYPE SCROLL
QUANTITY  2 4 6 8 10 12
NOS OF CIRCUITS 2 4 6 8 10 12
POWER SUPPLY V/Ph/Hz 208~230/3/60;460/3/60
RATED RUNNING 208~230V A 27
CURRENT 460V A 13
RATED INPUT POWER W 7400
MAXIMUM STARTING 208~230V A 148
CURRENT 460V A 72
PROTECTION DEVICES H/L PRESSURE SWITCH/THERMAL AND CURRENT OVERLOAD PROTECTOR
STAGE OF CAPCITY CONTROL 2 4 6 8 10 12
INSULATION GRADE E
208~230V A 248
LOCKED ROTOR AMP
460V A 120
REFRIGERANT
TYPE R22
CONTROL THERMOSTATIC EXPANSION VALVE AND CAPILLARY
REFRIGERANT CHARGE kg/lb 13.1/28.9 26.2/57.8 39.3/86.7 52.4/115.6 65.5/144.5 78.6/173.4
5
MODEL MAC210A MAC420A MA C630A MAC840A MAC1050A MAC1260A
EVAPORATOR
TYPE BRAZED PLATE HEAT EXCHANGE
PLATE MATERIAL STAINLESS STEEL
208~230V B3-095-84
MODEL NAME 460V   B3-095-96
208~230V m3/ft3 0.102/3.60 0.204/7.2 0.306/10.8 0.408/14.4 0.51/18 0.612/21.6
WATER VOLUME
460V m3/ft3 0.108/3.81 0.216/7.62 0.324/11.43 0.432/15.24 0.54/19.05 0.648/22.86
m³/h/US
NOMINAL WATER FLOW 11.88/0.87 23.76/1.74 35.64/2.61 47.52/3.48 59.4/4.35 71.28/5.22
GPM
WATER LINE (HYDRAULIC KIT)
INSTALLATION
PIPE mm/inch 38/1 1/2"
PIPING CONNECTION
HEAD m 5
PIPE SIZE mm/inch 125/5"
UNIT WATER PRESSURE DROP kPa/psi 72/10 74/11 76/11 78/11 80/12 83/12
CONDENSER COIL
TYPE TUBE+FIN
MATERIAL COPPER
TYPE INNER GROOVE
TUBE WALL THICKNESS mm/inch 0.36/0.01417
OUTER
mm/inch 9.52/3/8
DIAMETER
TUBE HEIGHT TH 40
MATERIAL ALUMINUM
THICKNESS mm/inch 0.11/0.00433
FIN
ROWS 3
FIN PER INCH 16
TOTAL FACE AREA m2/ft2 3.50/37.6 7/15.2 10.5 14 17.5 21
CONDENSER FAN
TYPE/DRIVE  AXIAL BIG VANE AND LOW NOISE BLOWER/DIRECT
QUANTITY 2 4 6 8 10 12
BLADE MATERIAL  GALVANIZED STEEL
BLADE DIAMETER mm/inch 711.2/28″
POWER SUPPLY V/Ph/Hz 208~230/3/60;460/3/60
RATED RUNNING 208~230V A 5.2
CURRENT 460V A  2.6
RATED INPUT POWER W 1150
RATED OUTPUT POWER W 840
MOTOR POLES   8
CMH/
AIR VOLUME 26000/15058 52000/30116 78000/45174 104000/60232 13000/75290 156000/90348
CFM
COMPRESSOR
TYPE SCROLL
QUANTITY 2 4 6 8 10 12
NOS OF CIRCUITS 2 4 6 8 10 12
POWER SUPPLY V/Ph/Hz 208~230/3/60;460/3/60
RATED RUNNING 208~230V A 31
CURRENT 460V A 15
RATED INPUT POWER W 8500
MAXIMUM 208~230V A 172
STARTING
CURRENT 460V A 84
PROTECTION DEVICES H/L PRESSURE SWITCH/THERMAL AND CURRENT OVERLOAD PROTECTOR
STAGE OF CAPCITY CONTROL 2 4 6 8 10 12
INSULATION GRADE E
LOCKED ROTOR 208~230V A 260
AMP 460V A 125
REFRIGERANT
TYPE R22
CONTROL THERMOSTATIC EXPANSION VALVE AND CAPILLARY
REFRIGERANT CHARGE kg/lb 13.1/28.9 26.2/57.8 39.3/86.7 52.4/115.6 65.5/144.5 78.6/173.4
6
Electric Data
MODEL MAC160A-PAA-E MAC160A-QAA-E MAC210A-PAB-E MAC210A-QAB-E
RATED TOTAL INPUT POWER (COOLING) W 22000 22000 24500 24500
RATED RUNNING CURRENT (COOLING) A 70 34 79 38
POWER SOURCE V/Ph/Hz 208~230/3/60 460/3/60 208~230/3/60 460/3/60
MAIN WIRE SECTION AREA mm2 16 10 16 10
(R/S/T) QTY   3
POWER NETURAL SECTION AREA mm2 6 4 6 4
SOURCE WIRE QTY 1 1 1 1
WIRE EARTH SECTION AREA mm2 16 10 16 10
WIRE QTY 1
CONTROL WIRE RWP2×1mm2
NOTES:
1) The above data are based on unit electronic parameter.
2) The wires should be well connected.
3) Every wire can not contact pipes, compressor, fan motor or other movable parts.
Safety Devices
OPEN Pa / psi 2,800,000/406
HIGH PRESSURE SWITCH
CLOSE Pa / psi 2,400,000/348
OPEN Pa / psi 50,000/7.25
LOW PRESSURE SWITCH
CLOSE Pa / psi 150,000/21.76
PHASE SEQUENCER Y
DISCHARGE THERMOSTAT SETTING °C / °F 125±5/257.4±9
Sound Data
1/1 Octave Sound Pressure Level (dB,ref 20uPa)
Type dB(A)
63HZ 125HZ 250HZ 500HZ 1000HZ 2000HZ 4000HZ 8000HZ
MAC160A (208~230V/3Ph/60Hz) 49.0 54.6 58.9 66.2 68.4 63.6 58.5 54.6 71.90
MAC160A (460V/3Ph/60Hz) 49.3 54.2 57.9 65.6 67.9 63.7 57.3 52.9 71.40
MAC210A (208~230V/3Ph/60Hz) 50.8 52.7 58.0 64.3 66.4 62.5 57.3 51.0 70.20
MAC210A (460V/3Ph/60Hz) 49.4 53.4 57.4 64.4 66.6 61.9 56.8 49.1 70.00
ACCORDING TO :ISO3744:1994 "ACOUSTICS--DETERMINATION OF SOUND POWER LEVELS OF NOISE SOURCES USING SOUND
PRESSURE--ENGINEERING METHOD IN AN ESSENTIALLY FREE FIELD OVER A REFLECTING PLANE".


7
Operating Limit
Cooling mode
5 7.5 10 12.5 15
48 48
Ambient temperature (
40 40
35 35
30 operating limit 30
)
25 25
20 20
15 15
5 7.5 10 12.5 15
leaving water temperature ( )
Performance Data
COOLING CAPACITY
Cooling Performance Chart
1.18
1.16
1.14
Output Temperature of Cooled Water ( )
1.12
1.10
1.08
Crrection Factor of Capacity
1.06
1.04
1.02
1.00
0.98 9
0.96
8
0.94
7
0.92
0.90 6
0.88
5
0.86
0.84 4
0.82
0.80
25 28 30 35 40 43
Ambient Temperature ( )
8
COOLING POWER INPUT
Cooling Power Input Chart
1.10 9
1.08 8
Output Temperature of Cooled Water ( )
7
1.06 6
1.04 5
Correction Factor of Power
4
1.02
1.00
0.98
0.96
0.94
0.92
0.90
0.88
0.86
0.84
25 28 30 35 40 43
Am bient Tem perature ( )
Correction Factors With Glycol Use
GLYCOL% COOLING CAPACITY WATER FLOW PRESSURE DROP
10 0.99 1.015 1.06
20 0.98 1.04 1.12
30 0.97 1.08 1.18
40 0.965 1.135 1.24
Water Pressure Drop Chart
MAC160A-PAA/QAA-E
Water Pressure Drop Chart
320
280
k Pa
240
200
Pressure Drop
160
120
80
40
0
5 6 7 8 9 10 11 12 13 14 15
Water Flow m3/h
9
MAC210A-PAB/QAB-E
Water Pressure Drop Chart
180
160
kPa 140
120
100
Pressure Drop
80
60
40
20
0
6 7 8 9 10 11 12 13 14 15 16 17 18
Water Flow m /h
3
Outlines and Dimensions
Model: MAC160A
Water In
Water Out
Model: MAC210A
Water In
Water Out
10
Models: MAC960A
3
1724
1785
Intel
343
Outel 3
A A A A A A 335
232.5
91 AxN=L 1820
Unit: mm
MODEL NUMBER Single unit size (A) units size (L)
MAC160A 1 1000 1000
MAC320A 2 1000 2000
MAC480A 3 1000 3000
MAC640A 4 1000 4000
MAC800A 5 1000 5000
MAC960A 6 1000 6000
… n (n≤10) 1000 1000 x n
Models: MAC1260A
456.5
3
2089
2193
Intel
Outel 3
A A A A A A 303
335
110 AxN=L 2056
Unit: mm
MODEL NUMBER Single unit size (A) units size (L)
MAC210A 1 1030 1030
MAC420A 2 1030 2060
MAC630A 3 1030 3090
MAC840A 4 1030 4120
MAC1050A 5 1030 5150
MAC1260A 6 1030 6180
… n (n≤10) 1030 1030 x n
11
Wiring Diagrams
Ensure that the rated voltage of the unit corresponds to that of the name plate before general precautions.
Provide a power outlet to be used exclusively for each unit. A power supply disconnects and a circuit breaker for
over-current protection should be provided in the exclusive line.
The modular air-cooled chillers must be well grounded. It absolutely cannot be connected with gas-pipe, water pipe
and telephone line.
With MCH03B Controller
208-230V/3Ph/60Hz
MODEL: MAC160/210A(MASTER UNIT)
208~230V/3~/60Hz
RM4-TG20
R L1 28
L2 25
S 18 KM1


Use: 0.0333