Midea LSBLG255/MZ, Technical & Service Manual

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DX type water-cooled screw chiller (PCB Control) MCAC-CTSM-2014-03
10
3. Specifications
Single head
LSBLGXXX/MZ 255 320 400 485 630 860
Cooling capacity kW 253 318 400 485 628 859
Power input kW 53.6 67 85 100 125 173
EER kW/kW 4.73 4.75 4.71 4.85 5.02 4.97
Semi-hermetic screw compressor
Circuit A Quantity 1 1 1 1 1 1
Circuit B Quantity -- -- -- -- -- --
Capacity Control %
25%,50%,75%,100% four steps control
(25%,50%-100% Stepless as Option)
Oil recharge Type HBR-B01
Circuit A L 14 14 15 18 23 28
Circuit B L -- -- -- -- -- --
Refrigerant Type R22
Circuit A kg 35 40 60 80 110 160
Circuit B kg -- -- -- -- -- --
Control Type TXV TXV TXV TXV TXV EXV
Evaporator Type Shell-tube Direct Expansion Evaporator
Water content L 100 150 80 120 340 290
Water flow m³/h 43.5 54.7 68.8 83.4 108 147.7
Pressure drop kPa 41 36 73 54 65 65
Connection Type Victaulic coupling
Max. pressure MPa 1 1 1 1 1 1
Water inlet/outlet pipe dia. mm 80 80 100 125 125 150
Condenser Type Tube-and shell condenser
Water content L 150 150 130 160 320 260
Water flow m³/h 54.4 68.4 86 104.3 135 184.7
Pressure drop kPa 36 41 22 49 81 41
Max. pressure MPa 1 1 1 1 1 1
Water inlet/outlet pipe dia. mm 80 80 100 125 125 150
Unit length mm 2800 2800 2860 3200 3430 3430
Unit width mm 1165 1165 1285 1300 1480 1610
Unit height mm 1350 1350 1420 1450 1600 1730
Shipping weight kg 1540 1870 2250 2610 2975 3780
Running weight kg 1840 2070 2550 2910 3375 4180
Safety protection device
The following safety devices are equipped as standard.
High pressure (pressure switch);Low pressure (pressure sensor)
Compressor thermal protection
High discharge temperature on the compressor
Phase monitor; Low-pressure ratio; Low oil level protection
Interrupter protection ;Overload compressor protection
Over-voltage & low- voltage protection
Sensor malfunction protection
Contactor malfunction protection
Freeze protection
Note:
Nominal cooling capacities are based on the following conditions:
Chilled water inlet/outlet temp: 12
℃
/7
℃
; (53.6F/44.6F); Cooling water inlet/outlet temperature 30/35
℃
(86F/96F).
The design fouling factor for both evaporator and condenser are 0.086 m
2
.
℃
/kW, otherwise can be customized.