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Table 1B —524J***A Physical Data, SI — Cooling Units
UNIT 524J* 25A 28A 30A
NOMINAL CAPACITY (kW) 70 87 105
OPERATING WEIGHT (kg)
Base Unit with TXV 331 477 482
Plenum 102 148 148
FANS
Qty ...Diam. (mm) 2...381 2...457 2...457
Nominal Airflow ( L/s) 3775 4119 5663
Airflow Range (L/s) 2831 – 4719 3539 – 5899 4247 – 7079
Nominal Motor kW (Standard Motor)
208/230---3---60 and 460---3---60 3.73 5.60 7.46
57 5 --- 3 --- 60 3.73 5.60 7.46
Motor Speed (r/s)
208/230---3---60 and 460---3---60 29.1 29.1 29.1
57 5 --- 3 --- 60 29.1 29.3 29.3
REFRIGERANT R---410A
Operating charge (kg)
(approx per circuit)*
1.59
2.04 2.27
DIRECT---EXPANSION COIL Enhanced Copper Tubes, Aluminum Sine---Wave Fins
Max Working Pressure (kPag) 4481
Face Area (sq m) 1.85 2.30 2.77
No. of Splits 2 2 2
No. of Circuits per Split 18 20 24
Split Type...Percentage Face...50/50
Rows...Fins/m 4...591 4...591 4...591
PIPING CONNECTIONS,
Quantity...Size (in.)
DX Coil — Suction (ODF) 2...1
1
/
8
2...1
3
/
8
2...1
3
/
8
DX Coil — Liquid Refrigerant (ODF) 2...
5
/
8
Steam Coil, In (MPT) 1...2
1
/
2
Steam Coil, Out (MPT) 1...
1
/
2
Hot Water Coil, In (MPT) 1...2
Hot Water Coil, Out (MPT) 1...2
Condensate (PVC) 1...1
1
/
4
ODM/1 IDF
FILTE R S Throwaway — Factory Supplied
Quantity...Size (mm.)
4...406 x 508 x 51
4...406 x 610 x 51
4...508 x 610 x 51
4...508 x 635 x 51
Access Location Either Side
STEAM COIL**
Max Wo rk ing Pressure (k Pag at 126°C) 138
Total Face Area (sq m) 1.24 1.39 1.39
Rows...Fins/m 1...394 1...394 1...394
HOT WATER COIL**
Max Working Pressure (kPag) 1034
Total Face Area (sq m) 1.24 1.39 1.39
Rows...Fins/m 2...335 2...335 2...335
Water Volume
(L) 52.6 54.1
(m
3
) 0.052 0.054
LEGEND
DX — Direct Expansion
TXV— Thermostatic Expansion Valve
* Units are shipped without refrigerant charge.
** Field installed accessory only.
524J