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16
Table 1 — Physical Data
LEGEND
UNIT 50XCW
06
08
12
14
16
24
NOMINAL CAPACITY (tons)
5
7.5
10
12
15
20
UNIT OPERATING WEIGHT (lb)
635
833
1137
1228
1228
1790
COMPRESSOR
Scroll
Compressor Model
ZPS60
ZPS67
ZP54/ZP49
ZP61/ZP57
ZP91/ZP67
ZP122/ZP91
Qty
1
1
2
2
2
2
Steps of Control
2
2
2
2
2
2
Operating Charge R-410A (lb)
3.9
5.5
11.7
13.8
17.2
19.7
EVAPORATOR FAN
Adjustable, Belt-Drive, Centrifugal Type
Nominal Cfm
1750
2625
3500
4375
5000
7000
Cfm Range
1500 to 2500
2250 to 3750
3000 to 5000
3600 to 6000
4500 to 5500
6500 to 8000
Available Static (in. wg)
0 - 1.6
0 - 1.6
0 - 1.6
0 - 1.6
0 - 1.6
0 - 1.6
Evaporator Fan Size
110-10R
110-10R
120-9R
120-9R
120-9R
120-11R
Number of Evaporator Fans
1
2
2
2
3
3
Standard Speed Range (rpm)
576-782
712-949
656-875
712-949
564-836
664-936
Max. Allowable rpm
1600
1700
2000
2000
2000
2000
Belt Type
A41
BX41
BX51
BX51
BX51
BX66
Fan Pulley (Type)
AK89
BK65
BK70
BK65
BK67
BK95
Motor Pulley (Type)
1VL44
1VP34
1VP34
1VP34
1VP34
1VP50
Std Hp
1.0
1.0
1.0
1.5
1.5
3
Hp Range
1 - 2
1 - 2
1 - 3
1.5 - 5
1.5 - 5
3 - 7.5
Fan Shaft Size (in.)
0.75
1
1
1
1.1875
1.1875
Motor Shaft Size (in.)
0.875
0.875
0.875
0.875
0.875
1.125
Center Distance (in.) - Vertical
15.3
15.3
18.1
18.1
18.1
21.3
Center Distance (in.) - Horizontal
N/A
N/A
15.5
13
15.7
18.1
EVAPORATOR COIL
3
/
8
-in. OD, Enhanced Copper Tube, Aluminum Fins
Quantity Rows ... Fin/in.
3…15
4…15
3…15
4…15
4… 15
4… 15
Fin Block Size (H x L) (in.)
28x35
28x46
32x60
32x60
32x80
36x80
Face Area (sq ft)
6.8
8.9
13.3
13.3
17.7
20
RETURN AIR FILTERS
Std 1 in., Throwaway
(2) 25 x 25
(2) 25 x 25
(8) 16 x 16
(8) 16 x 16
(2) 16 x 20
(8) 16 x 16
(2) 16 x 20
(4) 18 x 18
(4) 18 x 24
CONDENSER HEAT EXCHANGER
Number of Condensers
1
1
1
1
1
1
Nominal Gpm
15
23
30
38
45
60
Gpm Range
10 - 20
15 - 30
20 - 40
25 - 50
30 - 60
40 - 80
Water Connection Size (OD) (in.)
1.625
1.625
2.125
2.125
2.625
2.625
HIGH-PRESSURE SWITCH
Opens at 595
10 psig;
Closes at 443
15 psig
Opens at 650± 10 psig;
Closes at 500 ± 15 psig
LOW-PRESSURE SWITCH
Opens at 53
5 psig; Closes at 80
7 psig
CONDENSATE DRAIN LINE (in.)
1 at
3
/
4
MPT
MPT —
Male Pipe Thread