McQuay ALZ “B” User Manual

304 C – 02/06 D – pag. 3/16
Electrical data ALZ/ALP “B”
Unit size 011.1
013.1
017.1
020.1
022.2
025.2
029.2
033.2
036.2
038.2
Standard voltage (1)
400 V - 3f – 50 Hz + NEUTRAL
Nominal unit current (2)
A
32,3 37,8 45,4 54,8 64,1 75,9 83,9 93,5 99,4 109,8
Max compressor current (3)
A
29,3 35,4 44,4 54,6 61,0 74,4 83,8 95,2 98,0 109,6
Fans current
A
5,4 5,4 5,4 5,4 8,1 8,1 8,1 8,1 10,8 10,8
Max unit current (3)
A
34,7 40,8 49,8 60,0 69,1 82,5 91,9 103,3
108,8
120,4
Max unit inrush current (4)
A
151,6
154,3 203,1 207,8 186,2
195,0
246,0 253,2
260,4
268,2
Max unit current for wires sizing (5)
A
45,4 63,4 65,4 75,4 88,1 124,1
126,1 128,1
140,8
150,8
Notes: (1) Allowed voltage tolerance ± 10%. Voltage unbalance between phases must be within ± 3%.
(2) Nominal current are based on: 12/7 °C entering/leaving evaporator water temperature and 35°C ambient temp.
(3) Maximum current are based on: 14/9 °C entering/leaving evaporator water temperature and 40°C ambient temp.
(4) Inrush current of biggest compressor + nominal absorbed current of the other compressors.
(5) Compressor FLA + fans current.
Operating limits
Entering evaporator
water temperature
Leaving evap. water
temp.(without glycol)
Evaporator water ∆∆t
Ambient temperature
ALZ
Min. (°C) Max (°C) Min. (°C) Max (°C) Min. (°C) Max (°C) Min.(°C)(*) Max (°C)
011.1
8 20 4 15 4 8 15 42
013.1
8 20 4 15 4 8 15 42
017.1
8 20 4 15 4 8 14 42
020.1
8 20 4 15 4 8 12 40
022.2
8 20 4 15 4 8 15 42
025.2
8 20 4 15 4 8 13 40
029.2
8 15 4 10 4 8 12 40
033.2
8 15 4 10 4 8 10 40
036.2
8 20 4 15 4 8 15 42
038.2
8 20 4 15 4 8 15 40
(*) for ambient temperature down to –18°C low ambient kit is required (fan speed control)
Altitude correction factor
Elevation above sea level (m)
0 300 600 900 1200 1500 1800
Barometric pressure (mbar)
1013 977 942 908 875 843 812
Cooling capacity correction factor
1,000 0,991 0,981 0,972 0,962 0,953 0,943
Ethylene glycol and low ambient temperature correction factors
Air ambient temperature °C
-3 -8 -15 -23 -35
% of ethylene glycol correction factor
10 20 30 40 50
Cooling capacity correction factor
0,986 0,980 0,973 0,966 0,960
Flow rate correction factor
1,023 1,054 1,092 1,140 1,200
Water pressure drops correction factor
1,061 1,114 1,190 1,244 1,310
Low temperature operation performance factors
Ethylene glycol/water leaving temperature °C
2 0 -2 -6 -8
Cooling capacity correction factor
0,842 0,783 0,725 0,615 0,562
Power input compressors correction factor
0,950 0,934 0,918 0,870 0,845
Min % of ethylene glycol
10 20 20 30 30
Max air ambient temperature °C
40 40 38 34 32
Fouling factor
Fouling factor
m
2
°C / kW
Cooling capacity
correction factor
0,044 1,000
0,132 0,986
0,308 0,939

McQuay ALZ “B” Specifications

General

Brand	McQuay
Model	ALZ “B”
Category	Chiller
Language	English