12
Table 1 — Physical Data
LEGEND
UNIT 50XCA
06
08
12
14
16
24
NOMINAL CAPACITY (tons)
5
7.5
10
12
15
20
BASE UNIT OPERATING WEIGHT (lb)
883
1153
1352
1380
1645
2041
COMPRESSOR
Scroll
Compressor Model
ZPS60
ZPS67
ZP54/ZP49
ZP61/ZP57
ZP91/ZP67
ZP122/ZP91
Quantity
1
1
2
2
2
2
Steps of Control
1
1
2
2
2
2
Operating Charge R410-A (lb)
19.1
19.2
32.8
42.4
34.1
50.4
EVAPORATOR FAN
Adjustable, Belt Drive, Centrifugal Type
Nominal Cfm
1750
2600
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
2.0
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
BX42
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
1.875
1.875
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 … Fins/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 24
(4) 18 x 18
CONDENSER FAN
Adjustable, Belt Drive, Centrifugal Type
Nominal Cfm
3400
4000
6000
8000
8000
10300
Cfm Range
2625 - 4300
2625 - 4300
4625 - 7375
6000 - 9500
6000-9500
9000 to 11300
Available Static (in. wg)
0 - 1.0
0 - 1.0
0 - 1.0
0 - 1.0
0 - 1.0
0 - 1.0
Condenser Fan Size
110-10R
110-10R
150-12R
150-15R
150-11R
150-11R
Number of Condenser Fans
2
2
2
2
3
3
Standard Speed Range (Rpm)
656-875
656-875
712-949
764-1011
614-886
664-936
Max. Allowable Rpm
1700
1700
1700
1600
1700
1700
Belt Type
BX66
BX66
BX75
BX77
BX82
BX87
Fan Pulley (Type)
BK70
BK65
BK90
BK100
BK130
BK85
Motor Pulley (Type)
1VL44
1VP34
1VP34
1VP34
1VL34
1VP50
Std Hp
1
1
1
1
3
3
Hp Range
1 - 2
1 - 2
1 - 3
1 - 3
3 - 5
3 - 7.5
Fan Shaft Size (in.)
1
1
1
1.1875
1.4375
1.4375
Motor Shaft Size (in.)
0.875
0.875
0.875
0.875
1.125
1.125
Center Distance (in.)
27.1
27.1
29.8
29.8
29.8
35.1
CONDENSER COIL
3/8-in. OD, Enhanced Copper Tube, Aluminum Fins
Quantity Rows … Fins/in.
6…16
6…16
6…16
6…16
5…16
5… 16
Fin Block Size (H x L) (in.)
30 x 46
30 x 46
32 x 60
32 x 80
34 x 80
40 x 80
Face Area (sq ft)
9.6
9.6
13.3
17.8
18.8
22.22
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
MPT
— Male Pipe Thread
