Carrier OMNIZONE 50XCA06 24 User Manual

OMNIZONE™  
50XCA06-24  
Product  
Data  
Air-Cooled  
Indoor Self-Contained Systems  
with PURON® Refrigerant (R-410A)  
5 to 20 Nominal Tons  
The 50XCA single-package cooling  
units with integral air-cooled condensers  
offer:  
• Compact, durable, and attractive  
cabinet fits any working environment  
• Available in ducted or free return with  
rear return connections with vertical  
supply air discharge  
• Provides high-efficiency cooling for  
commercial and industrial projects  
• Rear condenser inlet and discharge  
and belt drive condenser fan permit  
condenser air connections to be  
ducted through window or wall louver  
• Uses Puron® refrigerant (R-410A)  
Features/Benefits  
The Omnizone 50XCA units  
provide a practical and  
economical approach to  
comfort conditioning  
requirements for offices,  
factories, and other  
applications in existing  
buildings when indoor air-  
cooled condensers are  
required.  
Design flexibility  
The 50XCA indoor packaged units are  
designed to provide the flexibility re-  
quired in replacement, renovation, and  
new construction. Units are available in 6  
sizes from 5 tons to 20 tons which meet  
the needs for cooling restaurants, retail  
stores, warehouses, offices, and building  
additions.  
a50-8499  
Copyright 2010 Carrier Corporation  
Form 50XCA-1PD  
Model number nomenclature  
50XC  
A
24 A A -  
B
5 A A H 0 AA  
Factory-Installed Options Code  
See codes in unit price pages  
50XC – OMNIZONE™ Indoor Packaged Unit  
Condenser Option  
A – Air-Cooled  
Design Revision Level  
0 – Original Release  
X – Quote Control  
Unit Size Nominal Tons  
06 – 5  
08 – 7 1/2  
12 – 10  
14 – 12  
16 – 15  
24 – 20  
Condenser Motor Hp Options  
D – 1 Hp Motor  
E – 1 1/2 Hp Motor  
F – 2 Hp Motor  
G 3 Hp Motor  
H – 5 Hp Motor  
Return Air/Discharge Air Options  
A – Rear Return, Vertical Discharge, Single Unit, Ducted  
J – 7 1/2 Hp Motor  
Heating Coil Options  
A – No Heating Coil  
Condenser Coil Options  
A – 0.0 to 0.2 ESP  
B – 0.2 to 0.5 ESP  
C – 0.5 to 1.0 ESP  
Evaporator Fan Speed  
See unit price pages.  
Control Options  
A – Standard Controls  
Evaporator Motor Hp Options  
B – 1/2 Hp Motor  
C 3/4 Hp Motor  
D – 1 Hp Motor  
F – 2 Hp Motor  
G 3 Hp Motor  
H – 5 Hp Motor  
J – 7 1/2 Hp Motor  
Voltage Options  
1 – 575-3-60  
5 – 208/230-3-60  
6 – 460-3-60  
E – 1 1/2 Hp Motor  
a50-8500  
AHRI* capacity ratings  
UNIT  
NOMINAL  
TONS  
EVAPORATOR  
CFM  
CONDENSER  
NET COOLING  
TOTAL  
kW  
5.8  
7.1  
10.6  
12.7  
14.7  
24.0  
EER  
IEER  
50XCA  
CFM  
2,800  
3,500  
5,500  
8,000  
8,000  
11,400  
(Btuh)  
65,000  
06  
08  
12  
14  
16  
24  
5
1,875  
2,625  
3,500  
4,200  
5,250  
7,000  
11.2  
11.2  
11.2  
11.0  
11.0  
10.0  
11.4  
11.4  
11.4  
11.2  
11.2  
10.1  
71/2  
10  
12  
15  
20  
80,000  
119,000  
140,000  
162,000  
240,000  
LEGEND  
Energy Efficiency Ratio  
Integrated Energy Efficiency Ratio  
EER  
IEER  
*AHRI — Air Conditioning, Heating, and Refrigeration Institute.  
NOTE: Unit is tested in accordance with AHRI standard 340/360.  
3
Physical data  
UNIT 50XCA  
NOMINAL CAPACITY (tons)  
UNIT OPERATING WEIGHT (lb)  
COMPRESSOR  
06  
5
891  
08  
71/2  
1144  
12  
10  
1269  
14  
12  
1298  
16  
15  
1575  
24  
20  
2000  
Copeland Scroll  
Compressor Model  
Qty  
Steps of Control  
ZP57  
1
1
ZP67  
1
1
ZP51  
2
2
ZP57  
2
2
ZP72  
2
2
ZP103  
2
2
Operating Charge R-410A (lb)  
EVAPORATOR FAN  
Nominal Cfm  
17.4  
21.4  
15.5 / 14.6  
Adjustable, Belt-Drive, Centrifugal  
22.1 / 20.8  
26.1 / 19.1  
26.6 / 19.5  
1750  
1500 to 2500  
0 - 1.6  
110-10R  
1
576 - 782  
1600  
1...A50  
AK89  
2625  
2250 to 3750  
0 - 1.6  
110-10R  
2
712 - 949  
1700  
1...BX42  
BK65  
3500  
3000 to 5000  
0 - 1.6  
120-9R  
2
656 - 750  
1700  
1...BX48  
BK70  
1VP34  
1
4375  
3600 to 6000  
0 - 1.6  
120-9R  
2
801 - 832  
1700  
1...BX46  
BK100  
1VP56  
1.5  
5250  
4500 to 7500  
0 - 1.6  
120-9R  
3
689 - 918  
1700  
1...BX48  
BK67  
7500  
6000 to 10000  
0 - 1.6  
120-11R  
3
889 - 913  
1700  
1...BX56  
BK67  
Cfm Range  
Available Static (in. wg)  
Evaporator Fan Size  
Number of Evaporator Fans  
Standard Speed Range (Rpm)  
Max. Allowable Rpm  
Belt Quantity ... Type  
Fan Pulley (Type)  
Motor Pulley (Type)  
Std HP  
1VP44  
0.5  
1VP34  
1
1VP34  
1.5  
1VP44  
3
HP Range  
0.5 - 1.5  
0.75  
0.625  
1 - 2  
1
1 - 3  
1
0.875  
17.1  
1.5 - 5  
1.1875  
0.875  
1.5 - 5  
1.1875  
0.875  
3 - 7.5  
1.1875  
1.125  
Fan Shaft Size (in.)  
Motor Shaft Size (in.)  
Center Distance (in.)  
EVAPORATOR COIL  
Quantity Rows ... Fin/in.  
Fin Block Size (H x L) (in.)  
Face Area (sq ft)  
0.875  
15.3  
15.3  
16.5  
17.1  
21.1  
3/8-in. OD, Enhanced Copper Tube, Aluminum Fins  
4...12  
28 x 34  
6.6  
4...12  
28 x 46  
8.9  
5...12  
32 x 60  
13.3  
5...12  
32 x 60  
13.3  
5...12  
32 x 80  
17.8  
5...12  
36 x 80  
20.0  
RETURN AIR FILTERS (Std 1 in.,  
throwaway)  
(8) 16x16  
(2) 16x20  
(8) 16x16  
(2) 16x20  
(4) 18X18  
(4) 18X24  
(2) 25X25  
(2) 25X25  
(8) 16X16  
CONDENSER FAN  
Nominal Cfm  
Cfm Range  
Adjustable, Belt-Drive, Centrifugal  
2800  
2100 - 3000  
0 - 1.0  
110-10R  
2
656 - 875  
1700  
1...BX66  
BK70  
3500  
2625 - 4300  
0 - 1.0  
110-10R  
2
712 - 949  
1700  
1...BX65  
BK65  
1VP34  
1.5  
6400  
4800 - 7600  
0 - 1.0  
150-12R  
2
8000  
6000 - 9500  
0 - 1.0  
150-15R  
2
8500  
6375 - 9700  
0 - 1.0  
150-15R  
2
764 - 1011  
1600  
1...BX75  
BK77  
11400  
8550 - 12700  
0 - 1.0  
150-11R  
3
820 - 1041  
1700  
1...BX90  
BK85  
Available Static  
Condenser Fan Size  
Number of Condenser Fans  
Standard Speed Range (Rpm)  
Max. Allowable Rpm  
Belt Quantity ... Type  
Fan Pulley (Type)  
712 - 949  
1700  
764 - 1011  
1600  
1...BX75  
BK90  
1VP34  
2
1...BX75  
BK77  
1VP44  
2
Motor Pulley (Type)  
Std HP  
1VP34  
1.0  
1VP44  
3
1VP50  
5
HP Range  
1 - 1.5  
1
0.875  
26  
1 - 2  
1
0.875  
2 - 3  
1
0.875  
29  
2 - 3  
1.1875  
1.125  
3 - 5  
1.1875  
1.125  
3 - 7.5  
1.4375  
1.125  
Fan Shaft Size (in.)  
Motor Shaft Size (in.)  
Center Distance (in.)  
CONDENSER COIL  
Quantity Rows ... Fin/in.  
Fin Block Size (H x L)  
Face Area (sq ft)  
26  
29  
29  
35  
3/8-in. OD, Enhanced Copper Tube, Aluminum Fins  
6...16  
30 x 46  
9.6  
6...16  
30 x 46  
9.6  
6...16  
34 x 60  
14.2  
6...16  
34 x 80  
18.9  
6...16  
34 x 80  
18.9  
6...16  
40 x 80  
22.2  
CONDENSATE DRAIN LINE (in.)  
1 at 3/4 FPT  
LEGEND  
FPT — Female Pipe Thread  
4
Dimensions — 50XCA06-14  
P
O
EVAP ACCESS  
PANEL  
Q
N
Q
DISCONNECT  
(OPT)  
50XCA06  
TOP VIEW  
P
CONTROL BOX  
O
CONDENSER  
ACCESS  
Q
Q
PANEL  
N
N
FRONT VIEW  
TOP VIEW  
50XCA08,12,14  
A
F
6.4 (1"-2" FLTR)  
I
INDOOR SUPPLY  
AIR FLOW  
C
INDOOR RTN  
AIR FLOW  
E
G
FILTER ACCESS  
(BOTH SIDES)  
1.8  
CONDENSER  
DISCHARGE  
B
S
T
COND VFD  
(OPT)  
U
U
H
R
R
K
3/4" FPT DRAIN  
D
OUTDOOR RTN  
AIR FLOW  
5.9  
M
14.3  
J
RIGHT VIEW  
REAR VIEW  
L
COND  
EVAP  
EVAP RETURN  
DUCT  
EVAP RETURN  
DUCT  
EVAP SUPPLY DUCT  
(Blower Opening)  
COND DISCHARGE  
WIDTH HEIGHT DEPTH  
UNIT  
50XCA  
SECTION SECTION  
DUCT (Blower Opening)  
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
06  
08  
12  
14  
53.1  
53.1  
68.0  
88.0  
77.1  
77.1  
90.1  
90.1  
30.0  
30.0  
31.2  
31.2  
46.6  
46.6  
54.5  
54.5  
31.0  
31.0  
35.5  
35.5  
47.2 24.8 49.8 4.8 46 29.4 0.9 4.8 13.4 12.8 2.7 19.8 13.4 12.8 32.1  
47.2 24.8 49.8 4.8 46 29.4 0.9 4.8 13.4 12.8 2.7 7.6 13.4 12.8 32.1  
7.6  
7.6  
61.1 31.8 56.7 5.5 60 32.8 1.5 5.7 12.5 13.8 8.5 13.6 16.4 16.2 36.5 11.5  
81.0 31.8 56.7 2.5 80 32.8 1.5 5.7 12.5 13.8 8.9 23.6 18.9 16.2 36.6 17.2  
NOTE: Dimensions are in inches.  
a50-8501  
5
Dimensions — 50XCA16,24  
4.9 (1"-2" FLTR)  
C
INDOOR RTN  
AIR FLOW  
E
P
R
R
FILTER ACCESS  
(BOTH SIDES)  
O
CONDENSER  
B
DISCHARGE  
Q
Q
N
N
N
D
TOP VIEW  
1.2  
OUTDOOR RTN  
AIR FLOW  
COND VFD  
(OPT)  
RIGHT VIEW  
A
F
INDOOR  
SUPPLY  
I
AIR FLOW  
G
T
T
13.2  
V
V
V
V
S
H
S
S
S
S
U
U
K
M
J
L
REAR VIEW  
50XCA16  
REAR VIEW  
50XCA24  
COND  
EVAP  
EVAP SUPPLY DUCT  
(Blower Opening)  
COND DISCHARGE  
WIDTH HEIGHT DEPTH  
EVAP RETURN DUCT EVAP RETURN DUCT  
UNIT  
50XCA  
SECTION SECTION  
DUCT (Blower Opening)  
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
16  
24  
88.0  
88.0  
90.1  
100.1  
31.0  
31.0  
54.5  
60.5  
35.5  
39.5  
81.0 31.8 56.7 5.5 80.0 32.8 1.5 5.7 12.5 13.8 8.5 13.5 11.7 18.9 16.2 36.5 16.2  
81.5 35.8 62.6 5.5 80.0 38.5 1.5 5.7 14.9 13.8 8.6 8.3 13.2 15.0 16.2 42.0 8.3  
NOTE: Dimensions are in inches.  
a50-8502  
6
24 (TYP)  
a50-8502  
SERVICE CLEARANCE  
NOTE: Dimensions are in inches.  
Selection procedure (50XCA08 unit example)  
I Determine design conditions.  
Given:  
For example:  
Unit selection — 50XCA08  
Selected at 3000 cfm of 80 F edb, 67 F ewb enter-  
ing air.  
TC = 83,800 Btuh  
SHC = 66,500 Btuh  
(See correction factor table, below the cooling  
capacity tables.)  
Compressor — Power Input = 5.85 kW  
Leaving Air db  
= 59.9 F  
Leaving Air wb at 67 F wb  
= 58.3 F  
Cooling Requirements  
Total Cooling Capacity (TC) . . . . . . . . .82,000 Btuh  
Sensible Cooling Capacity (SHC) . . . . .65,000 Btuh  
Evaporator Air Quantity. . . . . . . . . . . . . 3,000 Cfm  
Condenser Air Quantity. . . . . . . . . . . . . 3,500 Cfm  
Summer Entering-Air Conditions:  
Entering dry bulb (edb) . . . . . . . . . . . . . . . . .80 F  
Entering wet bulb (ewb) . . . . . . . . . . . . . . . .67 F  
Entering Condenser Air Temp (EAT) . . . . . . .95 F  
Unit Voltage . . . . . . . . . . . . . . . . . . . . . . . . 460 V  
Fan Requirements  
External Static Pressure Required  
III Fan requirements.  
ESP (in. wg) . . . . . . . . . . . . . . . . . . . . . . . . . .0.75  
External static pressure (ESP) required 0.75 in. wg  
Enter Evaporator Fan Performance table for cfm, and  
static pressure required to obtain the following data:  
II Select unit based on cooling requirements.  
Enter Gross Cooling Capacities table for 50XCA08  
unit at 3000 cfm and required wet bulb of 67 F and  
read down to the section displaying capacities with  
95 F entering-air temperature. The 50XCA08 pro-  
vides a total capacity closest to design requirements.  
For 3000 cfm and 0.75 ESP, by interpolation the  
fan operates at 877 rpm and requires 0.98 brake  
horsepower.  
Since standard motor horsepower is 1.0, it will pro-  
duce the necessary cfm and ESP for this job.  
7
Performance data  
GROSS COOLING CAPACITIES  
50XCA06 (5 TONS)  
AIR ENTERING EVAPORATOR — 80 F Edb (F) - CFM  
Entering  
Condenser Air  
2500  
2000  
1500  
Air Entering Evaporator — Ewb (F)  
57  
0.20  
73.4  
73.4  
53.08  
45.41  
3.25  
62  
0.10  
74.8  
70.2  
54.40  
51.41  
3.27  
67  
0.10  
80.4  
58.6  
58.75  
56.79  
3.34  
75  
0.03  
90.4  
38.9  
65.92  
65.43  
3.48  
57  
0..34  
68.8  
68.8  
48.48  
43.16  
3.20  
62  
0.15  
71.9  
63.2  
51.18  
48.97  
3.23  
67  
0.14  
77.8  
53.4  
55.83  
54.36  
3.31  
75  
0.10  
87.8  
36.9  
63.36  
63.10  
3.45  
57  
0.44  
62.9  
62.1  
42.07  
39.61  
3.13  
62  
0.22  
67.9  
55.2  
46.49  
45.04  
3.18  
67  
0.18  
73.7  
47.5  
51.34  
50.43  
3.26  
75  
0.15  
83.7  
34.5  
59.30  
59.29  
3.39  
ECT (F)  
CFM  
2100  
BF  
TC  
SHC  
LDB  
LWB  
kW  
74.0  
75.7  
81.5  
92.2  
69.3  
72.7  
78.8  
89.4  
63.3  
68.5  
74.5  
85.0  
TC  
SHC  
LDB  
LWB  
kW  
74.0  
52.85  
45.30  
2.85  
74.5  
74.5  
52.70  
45.22  
2.63  
68.7  
68.7  
54.80  
46.22  
4.29  
69.5  
69.5  
54.52  
46.09  
3.83  
70.0  
70.0  
54.34  
46.01  
3.57  
63.4  
63.4  
56.74  
47.14  
5.48  
64.3  
64.3  
56.44  
46.99  
4.99  
64.8  
64.8  
56.23  
46.90  
4.70  
60.4  
60.4  
57.84  
47.64  
6.11  
61.3  
61.3  
57.52  
47.50  
5.62  
61.9  
61.9  
57.29  
47.39  
5.34  
57.3  
57.3  
59.00  
48.18  
6.76  
58.3  
58.3  
70.7  
54.22  
51.28  
2.86  
76.1  
70.9  
54.13  
51.21  
2.63  
69.3  
67.3  
55.46  
52.26  
4.29  
70.3  
67.8  
55.26  
52.11  
3.84  
70.9  
68.1  
55.15  
52.03  
3.58  
63.5  
63.5  
56.84  
53.16  
5.48  
64.5  
64.5  
56.48  
53.01  
4.99  
65.0  
65.0  
56.29  
52.93  
4.71  
60.5  
60.5  
57.93  
53.62  
6.11  
61.4  
61.4  
57.61  
53.48  
5.62  
62.0  
62.0  
57.39  
53.39  
5.34  
57.3  
57.3  
59.09  
54.09  
6.76  
58.3  
58.3  
59.0  
58.60  
56.63  
2.90  
82.2  
59.3  
58.49  
56.54  
2.65  
74.4  
56.1  
59.67  
57.64  
4.37  
75.5  
56.5  
59.51  
57.48  
3.88  
76.3  
56.8  
59.39  
57.37  
3.60  
67.6  
53.3  
60.66  
58.57  
5.55  
68.8  
53.7  
60.53  
58.41  
5.03  
69.6  
54.1  
60.39  
58.30  
4.73  
63.8  
51.8  
61.22  
59.08  
6.17  
65.0  
52.1  
61.09  
58.92  
5.66  
65.9  
52.5  
60.94  
58.80  
5.36  
59.9  
50.2  
61.79  
59.60  
6.81  
61.2  
50.7  
39.5  
65.71  
65.22  
2.98  
93.1  
39.9  
65.59  
65.11  
2.70  
83.5  
36.5  
66.79  
66.23  
4.52  
85.2  
37.1  
66.59  
66.04  
3.96  
86.2  
37.5  
66.45  
65.92  
3.64  
75.8  
33.9  
67.73  
67.11  
5.70  
77.5  
34.4  
67.54  
66.92  
5.11  
78.6  
34.8  
67.40  
66.80  
4.77  
71.6  
32.5  
68.24  
67.59  
6.32  
73.3  
33.0  
68.06  
67.40  
5.75  
74.4  
33.4  
67.91  
67.27  
5.41  
67.3  
31.0  
68.77  
68.07  
6.95  
68.9  
31.6  
69.3  
48.23  
43.03  
2.82  
69.6  
69.6  
48.09  
42.96  
2.61  
64.6  
64.6  
50.37  
44.09  
4.23  
65.2  
65.2  
50.10  
43.96  
3.80  
65.6  
65.6  
49.93  
43.87  
3.56  
59.8  
59.8  
52.58  
45.16  
5.42  
60.5  
60.5  
52.26  
45.01  
4.95  
61.0  
61.0  
52.05  
44.91  
4.69  
57.1  
57.1  
53.82  
45.76  
6.05  
57.8  
57.8  
53.49  
45.61  
5.59  
58.3  
58.3  
53.26  
45.49  
5.32  
54.2  
54.2  
55.15  
46.39  
6.70  
55.1  
55.1  
63.6  
51.03  
48.84  
2.84  
73.0  
63.8  
50.95  
48.76  
2.62  
66.7  
60.6  
52.37  
50.05  
4.26  
67.6  
61.1  
52.17  
49.87  
3.82  
68.0  
61.3  
52.09  
49.79  
3.56  
60.9  
57.7  
53.68  
51.21  
5.43  
61.9  
58.1  
53.49  
51.02  
4.97  
62.4  
58.4  
53.36  
50.91  
4.70  
57.7  
56.0  
54.46  
51.83  
6.06  
58.7  
56.5  
54.26  
51.63  
5.60  
59.3  
56.8  
54.11  
51.53  
5.33  
54.3  
54.3  
55.22  
52.48  
6.70  
55.4  
54.5  
53.7  
55.66  
54.18  
2.88  
79.4  
54.0  
55.54  
54.08  
2.64  
72.1  
50.9  
56.96  
55.40  
4.34  
73.1  
51.3  
56.76  
55.21  
3.86  
73.8  
51.6  
56.63  
55.10  
3.59  
65.7  
48.2  
58.16  
56.55  
5.52  
66.8  
48.6  
57.99  
56.36  
5.01  
67.5  
48.9  
57.84  
56.23  
4.72  
62.2  
46.7  
58.84  
57.17  
6.14  
63.2  
47.1  
58.67  
56.99  
5.64  
64.0  
47.4  
58.50  
56.85  
5.35  
58.4  
45.1  
59.53  
57.82  
6.78  
59.6  
45.6  
37.4  
63.11  
62.86  
2.96  
90.2  
37.7  
62.97  
62.73  
2.69  
81.3  
34.5  
64.42  
64.09  
4.48  
82.8  
35.0  
64.18  
63.86  
3.94  
83.8  
35.4  
64.03  
63.72  
3.63  
74.0  
31.9  
65.57  
65.18  
5.67  
75.5  
32.4  
65.34  
64.96  
5.09  
76.5  
32.8  
65.18  
64.81  
4.76  
70.0  
30.5  
66.20  
65.77  
6.29  
71.5  
31.0  
65.98  
65.55  
5.73  
72.6  
31.4  
65.80  
65.40  
5.40  
65.8  
29.1  
66.84  
66.37  
6.93  
67.4  
29.6  
62.4  
41.87  
39.46  
2.79  
63.5  
62.5  
41.79  
39.39  
2.60  
59.0  
59.0  
43.96  
40.86  
4.15  
59.5  
59.5  
43.66  
40.70  
3.76  
59.7  
59.7  
43.50  
40.62  
3.54  
54.9  
54.9  
46.46  
42.14  
5.28  
55.3  
55.3  
46.21  
42.01  
4.91  
55.7  
55.7  
45.99  
41.90  
4.66  
52.4  
52.4  
47.96  
42.90  
5.96  
53.0  
53.0  
47.63  
42.73  
5.54  
53.4  
53.4  
47.38  
42.61  
5.29  
49.9  
49.9  
49.53  
43.68  
6.61  
50.6  
50.6  
55.4  
46.35  
44.88  
2.82  
68.8  
55.6  
46.23  
44.77  
2.61  
63.2  
52.8  
47.94  
46.40  
4.21  
63.8  
53.1  
47.76  
46.22  
3.79  
64.2  
53.3  
47.63  
46.10  
3.55  
57.8  
50.2  
49.52  
47.93  
5.38  
58.5  
50.4  
49.36  
47.73  
4.94  
59.0  
50.7  
49.20  
47.59  
4.68  
54.8  
48.7  
50.43  
48.76  
6.01  
55.6  
49.1  
50.19  
48.52  
5.57  
56.0  
49.3  
50.08  
48.42  
5.31  
51.5  
47.1  
51.38  
49.64  
6.64  
52.4  
47.5  
47.8  
51.15  
50.23  
2.85  
75.0  
48.0  
51.01  
50.11  
2.63  
68.6  
45.1  
52.76  
51.77  
4.28  
69.5  
45.5  
52.54  
51.55  
3.83  
70.0  
45.7  
52.39  
51.42  
3.57  
62.8  
42.5  
54.32  
53.26  
5.47  
63.7  
42.9  
54.11  
53.03  
4.98  
64.3  
43.2  
53.93  
52.88  
4.70  
59.5  
41.1  
55.18  
54.07  
6.10  
60.4  
41.4  
54.97  
53.85  
5.62  
61.1  
41.8  
54.78  
53.68  
5.33  
56.1  
39.6  
56.07  
54.92  
6.74  
57.1  
40.0  
35.0  
59.01  
59.00  
2.93  
85.6  
35.2  
58.88  
58.87  
2.67  
77.8  
32.2  
60.63  
60.58  
4.43  
79.1  
32.7  
60.36  
60.31  
3.91  
79.8  
33.0  
60.18  
60.14  
3.61  
71.1  
29.7  
62.13  
62.00  
5.62  
72.4  
30.2  
61.85  
61.73  
5.06  
73.3  
30.5  
61.66  
61.55  
4.75  
67.4  
28.3  
62.95  
62.78  
6.24  
68.7  
28.8  
62.67  
62.51  
5.70  
69.6  
29.2  
62.46  
62.32  
5.38  
63.6  
27.0  
63.77  
63.57  
6.88  
64.9  
27.4  
55  
2800  
3500  
2100  
2800  
3500  
2100  
2800  
3500  
2100  
2800  
3500  
2100  
2800  
3500  
TC  
SHC  
LDB  
LWB  
kW  
TC  
SHC  
LDB  
LWB  
kW  
TC  
SHC  
LDB  
LWB  
kW  
75  
TC  
SHC  
LDB  
LWB  
kW  
TC  
SHC  
LDB  
LWB  
kW  
TC  
SHC  
LDB  
LWB  
kW  
95  
TC  
SHC  
LDB  
LWB  
kW  
TC  
SHC  
LDB  
LWB  
kW  
TC  
SHC  
LDB  
LWB  
kW  
105  
TC  
SHC  
LDB  
LWB  
kW  
TC  
SHC  
LDB  
LWB  
kW  
TC  
SHC  
LDB  
LWB  
kW  
115  
58.63  
48.01  
6.28  
58.8  
58.8  
58.45  
47.92  
6.00  
58.72  
53.94  
6.28  
58.8  
58.8  
58.54  
53.87  
6.00  
61.62  
59.43  
6.32  
62.0  
51.0  
61.49  
59.32  
6.02  
68.58  
67.89  
6.40  
69.9  
31.9  
68.46  
67.78  
6.06  
54.76  
46.21  
6.25  
55.5  
55.5  
54.58  
46.12  
5.99  
55.16  
52.28  
6.25  
55.9  
54.9  
54.99  
52.17  
5.99  
59.33  
57.62  
6.30  
60.2  
45.9  
59.21  
57.51  
6.01  
66.61  
66.15  
6.38  
68.3  
29.9  
66.47  
66.02  
6.06  
49.11  
43.47  
6.19  
50.9  
50.9  
48.92  
43.38  
5.95  
51.15  
49.40  
6.22  
52.8  
47.7  
51.03  
49.29  
5.97  
55.82  
54.67  
6.27  
57.6  
40.2  
55.69  
54.54  
6.00  
63.49  
63.29  
6.36  
65.7  
27.7  
63.32  
63.14  
6.04  
TC  
SHC  
LDB  
LWB  
kW  
LEGEND  
BF  
ECT  
EDB  
Bypass Factor  
Entering Condenser Temperature (F)  
Entering Dry Bulb (F)  
EWB — Entering Wet Bulb (F)  
SHC  
TC  
kW  
Sensible Capacity (1000 Btu/hr)  
LDB  
LWB  
Leaving Dry Bulb (F)  
Leaving Wet Bulb (F)  
Total Capacity (1000 Btu/hr)  
Compressor Motor Power Input (kilowatts)  
8
GROSS COOLING CAPACITIES (cont)  
50XCA08 (71/2 Tons)  
AIR ENTERING EVAPORATOR — 80 F Edb (F) - CFM  
Entering  
Condenser Air  
3750  
3000  
2250  
Air Entering Evaporator — Ewb (F)  
57  
0.30  
95.1  
95.1  
56.76  
47.15  
3.95  
62  
0.11  
95.4  
95.3  
56.81  
53.14  
3.97  
67  
0.10  
100.9  
80.3  
60.59  
58.61  
4.07  
75  
0.06  
113.5  
50.9  
67.72  
67.13  
4.32  
57  
0.43  
89.6  
89.6  
52.61  
45.18  
3.85  
62  
0.20  
91.1  
86.8  
53.61  
51.24  
3.88  
67  
0.13  
98.1  
72.4  
58.11  
56.60  
4.01  
75  
0.12  
110.8  
47.9  
65.58  
65.20  
4.26  
57  
0.52  
82.1  
82.1  
46.56  
42.19  
3.71  
62  
0.31  
86.4  
75.4  
49.48  
47.98  
3.79  
67  
0.17  
93.8  
63.8  
54.30  
53.32  
3.93  
75  
0.16  
106.4  
44.5  
62.17  
62.05  
4.18  
ECT (F)  
CFM  
2625  
BF  
TC  
SHC  
LDB  
LWB  
kW  
TC  
96.1  
96.1  
56.51  
47.03  
3.53  
96.2  
96.2  
56.61  
53.06  
3.53  
102.4  
80.9  
60.44  
58.48  
3.61  
115.5  
51.5  
67.57  
66.98  
3.80  
90.4  
90.4  
52.37  
45.06  
3.45  
92.1  
87.3  
53.47  
51.11  
3.47  
99.5  
73.0  
57.94  
56.44  
3.57  
112.7  
48.5  
65.40  
65.02  
3.76  
82.7  
82.7  
46.31  
42.07  
3.35  
87.1  
75.7  
49.36  
47.85  
3.41  
94.9  
64.3  
54.11  
53.14  
3.51  
108.1  
45.0  
61.94  
61.81  
3.70  
SHC  
LDB  
LWB  
kW  
55  
3500  
4300  
2625  
3500  
4300  
2625  
3500  
4300  
2625  
3500  
4300  
2625  
3500  
4300  
TC  
96.5  
96.5  
56.41  
46.98  
3.30  
96.7  
96.7  
56.49  
53.02  
3.31  
103.1  
81.2  
60.37  
58.42  
3.37  
116.6  
51.9  
67.49  
66.90  
3.53  
90.8  
90.8  
52.24  
45.00  
3.24  
92.5  
87.6  
53.39  
51.06  
3.26  
100.0  
73.2  
57.88  
56.38  
3.34  
113.6  
48.8  
65.30  
64.93  
3.49  
83.0  
83.0  
46.19  
42.01  
3.16  
87.5  
75.9  
49.26  
47.77  
3.21  
95.3  
64.5  
54.04  
53.07  
3.29  
108.8  
45.3  
61.83  
61.71  
3.44  
SHC  
LDB  
LWB  
kW  
TC  
88.9  
88.9  
58.27  
47.84  
5.06  
89.0  
89.0  
58.36  
53.79  
5.06  
93.2  
77.1  
61.34  
59.30  
5.16  
105.0  
48.0  
68.43  
67.77  
5.44  
84.0  
84.0  
54.32  
46.00  
4.96  
84.5  
83.2  
54.72  
52.10  
4.97  
90.8  
69.4  
59.01  
57.46  
5.11  
102.6  
45.0  
66.44  
66.00  
5.38  
77.2  
77.2  
48.53  
43.18  
4.81  
80.1  
72.3  
50.72  
49.13  
4.87  
87.0  
60.9  
55.49  
54.44  
5.02  
98.8  
41.7  
63.28  
63.09  
5.29  
SHC  
LDB  
LWB  
kW  
TC  
89.9  
89.9  
58.04  
47.74  
4.58  
89.9  
89.9  
58.13  
53.70  
4.58  
94.7  
77.8  
61.18  
59.17  
4.66  
106.8  
48.6  
68.29  
67.64  
4.85  
84.8  
84.8  
54.08  
45.88  
4.50  
85.5  
83.7  
54.56  
51.97  
4.51  
92.0  
69.9  
58.89  
57.32  
4.61  
104.3  
45.6  
66.27  
65.84  
4.81  
77.8  
77.8  
48.30  
43.07  
4.39  
81.0  
72.7  
50.54  
48.98  
4.44  
88.0  
61.3  
55.32  
54.28  
4.55  
100.3  
42.2  
63.08  
62.89  
4.74  
SHC  
LDB  
LWB  
kW  
75  
TC  
90.4  
90.4  
57.90  
47.67  
4.32  
90.5  
90.5  
58.00  
53.64  
4.32  
95.4  
78.1  
61.11  
59.11  
4.38  
107.9  
48.9  
68.19  
67.55  
4.54  
85.3  
85.3  
53.94  
45.82  
4.26  
86.0  
84.0  
54.47  
51.90  
4.27  
92.7  
70.2  
58.79  
57.24  
4.35  
105.3  
45.9  
66.17  
65.74  
4.51  
78.1  
78.1  
48.17  
43.00  
4.17  
81.3  
72.9  
50.48  
48.91  
4.21  
88.6  
61.6  
55.21  
54.18  
4.30  
101.1  
42.5  
62.95  
62.78  
4.46  
SHC  
LDB  
LWB  
kW  
TC  
82.1  
82.1  
59.93  
48.60  
6.36  
82.2  
82.2  
60.01  
54.47  
6.37  
84.7  
73.8  
62.15  
60.06  
6.43  
95.4  
44.8  
69.19  
68.48  
6.72  
77.8  
77.8  
56.21  
46.89  
6.25  
77.9  
77.9  
56.31  
52.94  
6.26  
82.6  
66.2  
60.00  
58.39  
6.38  
93.4  
41.9  
67.37  
66.89  
6.67  
71.8  
71.8  
50.75  
44.28  
6.10  
73.4  
68.9  
52.08  
50.34  
6.14  
79.7  
57.7  
56.74  
55.63  
6.30  
90.3  
38.6  
64.49  
64.25  
6.58  
SHC  
LDB  
LWB  
kW  
TC  
82.9  
82.9  
59.73  
48.51  
5.83  
83.0  
83.0  
59.82  
54.39  
5.83  
86.1  
74.3  
62.02  
59.93  
5.89  
97.1  
45.4  
69.06  
68.35  
6.10  
78.5  
78.5  
56.03  
46.80  
5.75  
78.5  
78.5  
56.13  
52.86  
5.75  
83.8  
66.5  
59.89  
58.26  
5.85  
95.0  
42.4  
67.21  
66.73  
6.06  
72.2  
72.2  
50.58  
44.19  
5.64  
74.1  
69.3  
51.93  
50.22  
5.67  
80.4  
58.1  
56.61  
55.51  
5.79  
91.7  
39.1  
64.30  
64.06  
6.00  
SHC  
LDB  
LWB  
kW  
95  
TC  
83.5  
83.5  
59.59  
48.45  
5.55  
83.6  
83.6  
59.67  
54.33  
5.55  
86.9  
74.6  
61.95  
59.87  
5.60  
98.2  
45.8  
68.96  
68.27  
5.77  
79.0  
79.0  
55.87  
46.73  
5.48  
79.1  
79.1  
55.97  
52.80  
5.49  
84.5  
66.9  
59.79  
58.18  
5.56  
96.0  
42.8  
67.11  
66.63  
5.73  
72.6  
72.6  
50.42  
44.12  
5.39  
74.5  
69.4  
51.86  
50.16  
5.42  
81.1  
58.3  
56.49  
55.41  
5.52  
92.6  
39.4  
64.17  
63.94  
5.68  
SHC  
LDB  
LWB  
kW  
TC  
78.3  
78.3  
60.86  
49.02  
7.07  
78.3  
78.3  
60.95  
54.85  
7.08  
80.2  
71.9  
62.61  
60.46  
7.13  
90.2  
43.1  
69.60  
68.86  
7.41  
74.4  
74.4  
57.28  
47.39  
6.97  
74.4  
74.4  
57.38  
53.39  
6.97  
78.2  
64.4  
60.54  
58.90  
7.08  
88.6  
40.3  
67.84  
67.34  
7.37  
68.7  
68.7  
52.00  
44.89  
6.81  
69.5  
67.0  
52.86  
51.04  
6.83  
75.6  
56.1  
57.39  
56.29  
7.00  
85.8  
37.1  
65.10  
64.84  
7.29  
SHC  
LDB  
LWB  
kW  
TC  
79.1  
79.1  
60.67  
48.94  
6.54  
79.1  
79.1  
60.75  
54.77  
6.54  
81.6  
72.4  
62.49  
60.34  
6.58  
91.9  
43.6  
69.47  
68.74  
6.79  
75.0  
75.0  
57.09  
47.30  
6.45  
75.1  
75.1  
57.18  
53.30  
6.46  
79.5  
64.9  
60.39  
58.75  
6.54  
90.0  
40.7  
67.72  
67.21  
6.76  
69.2  
69.2  
51.82  
44.80  
6.34  
70.4  
67.4  
52.71  
50.88  
6.36  
76.3  
56.3  
57.31  
56.18  
6.48  
87.0  
37.5  
64.95  
64.69  
6.70  
SHC  
LDB  
LWB  
kW  
105  
TC  
79.7  
79.7  
60.52  
48.87  
6.24  
79.8  
79.8  
60.60  
54.71  
6.24  
82.3  
72.8  
62.41  
60.27  
6.28  
93.0  
44.0  
69.38  
68.66  
6.45  
75.5  
75.5  
56.93  
47.22  
6.18  
75.6  
75.6  
57.02  
53.24  
6.18  
80.0  
65.1  
60.33  
58.69  
6.25  
91.0  
41.1  
67.61  
67.11  
6.42  
69.6  
69.6  
51.66  
44.72  
6.09  
70.8  
67.6  
52.60  
50.80  
6.10  
76.9  
56.6  
57.18  
56.07  
6.20  
87.9  
37.8  
64.82  
64.57  
6.37  
SHC  
LDB  
LWB  
kW  
TC  
74.1  
74.1  
61.90  
49.49  
7.82  
74.1  
74.1  
61.98  
55.26  
7.82  
75.4  
69.8  
63.11  
60.87  
7.86  
84.8  
41.4  
70.03  
69.25  
8.14  
70.5  
70.5  
58.47  
47.94  
7.71  
70.5  
70.5  
58.56  
53.87  
7.71  
73.6  
62.5  
61.10  
59.41  
7.81  
83.2  
38.5  
68.39  
67.84  
8.10  
65.3  
65.3  
53.40  
45.56  
7.56  
65.6  
64.9  
53.68  
51.71  
7.57  
71.0  
54.2  
58.15  
57.01  
7.73  
80.7  
35.3  
65.81  
65.51  
8.02  
SHC  
LDB  
LWB  
kW  
TC  
75.0  
75.0  
61.66  
49.38  
7.28  
75.1  
75.1  
61.74  
55.17  
7.28  
76.7  
70.3  
62.99  
60.76  
7.32  
86.3  
41.8  
69.91  
69.14  
7.52  
71.2  
71.2  
58.24  
47.83  
7.20  
71.3  
71.3  
58.33  
53.78  
7.20  
74.8  
63.0  
60.96  
59.28  
7.28  
84.7  
39.0  
68.25  
67.70  
7.49  
65.9  
65.9  
53.17  
45.45  
7.09  
66.5  
65.2  
53.57  
51.55  
7.10  
71.9  
54.5  
58.03  
56.87  
7.22  
82.0  
35.7  
65.64  
65.34  
7.43  
SHC  
LDB  
LWB  
kW  
115  
TC  
75.7  
75.7  
61.51  
49.31  
6.99  
75.7  
75.7  
61.59  
55.10  
6.99  
77.4  
70.7  
62.91  
60.70  
7.02  
87.4  
42.2  
69.82  
69.06  
7.19  
71.8  
71.8  
58.07  
47.75  
6.93  
71.8  
71.8  
58.16  
53.71  
6.93  
75.5  
63.3  
60.88  
59.20  
6.99  
85.7  
39.3  
68.15  
67.61  
7.16  
66.3  
66.3  
53.00  
45.37  
6.83  
66.9  
65.5  
53.46  
51.48  
6.84  
72.5  
54.8  
57.91  
56.76  
6.94  
82.9  
36.1  
65.51  
65.22  
7.11  
SHC  
LDB  
LWB  
kW  
LEGEND  
BF  
ECT  
EDB  
Bypass Factor  
Entering Condenser Temperature (F)  
Entering Dry Bulb (F)  
EWB — Entering Wet Bulb (F)  
SHC  
TC  
kW  
Sensible Capacity (1000 Btu/hr)  
LDB  
LWB  
Leaving Dry Bulb (F)  
Leaving Wet Bulb (F)  
Total Capacity (1000 Btu/hr)  
Compressor Motor Power Input (kilowatts)  
9
Performance data (cont)  
GROSS COOLING CAPACITIES (cont)  
50XCA12 (10 TONS)  
AIR ENTERING EVAPORATOR — 80 F Edb (F) - CFM  
4000  
Entering  
Condenser Air  
5000  
3000  
Air Entering Evaporator — Ewb (F)  
57  
0.23  
140.7  
140.7  
54.21  
45.94  
5.93  
62  
0.06  
140.9  
140.9  
54.30  
52.09  
5.93  
67  
0.05  
151.0  
117.2  
58.75  
57.48  
6.09  
75  
0.03  
171.6  
75.7  
66.32  
65.97  
6.42  
57  
0.37  
131.8  
131.8  
49.79  
43.81  
5.80  
62  
0.13  
135.1  
125.6  
51.37  
49.88  
5.85  
67  
0.08  
146.3  
105.3  
56.13  
55.21  
6.02  
75  
0.06  
166.9  
71.0  
63.98  
63.77  
6.34  
57  
0.46  
119.7  
119.7  
43.44  
40.59  
5.62  
62  
0.23  
127.4  
108.2  
47.13  
46.26  
5.74  
67  
0.11  
139.0  
92.4  
52.10  
51.54  
5.91  
75  
0.10  
159.3  
65.8  
60.24  
60.18  
6.22  
ECT (F)  
CFM  
4800  
BF  
TC  
SHC  
LDB  
LWB  
kW  
TC  
141.6  
141.6  
54.03  
45.86  
5.31  
141.8  
141.8  
54.13  
52.02  
5.31  
152.6  
117.9  
58.62  
57.37  
5.42  
173.7  
76.4  
66.19  
65.85  
5.64  
132.5  
132.5  
49.62  
43.72  
5.22  
136.0  
126.1  
51.26  
49.79  
5.26  
147.7  
105.9  
56.00  
55.08  
5.37  
168.7  
71.6  
63.83  
63.63  
5.59  
120.2  
120.2  
43.27  
40.50  
5.11  
128.2  
108.6  
47.01  
46.14  
5.18  
140.0  
92.9  
51.96  
51.41  
5.30  
160.8  
66.4  
60.07  
60.02  
5.50  
SHC  
LDB  
LWB  
kW  
55  
6000  
7600  
4800  
6000  
7600  
4800  
6000  
7600  
4800  
6000  
7600  
4800  
6000  
7600  
TC  
142.1  
142.1  
53.95  
45.82  
4.97  
142.6  
141.3  
54.23  
51.96  
4.96  
153.3  
118.1  
58.57  
57.32  
5.05  
174.8  
76.7  
66.13  
65.78  
5.21  
132.9  
132.9  
49.54  
43.68  
4.90  
136.5  
126.3  
51.21  
49.74  
4.93  
148.3  
106.2  
55.94  
55.03  
5.01  
169.6  
71.9  
63.76  
63.56  
5.17  
120.5  
120.5  
43.18  
40.46  
4.82  
128.6  
108.8  
46.95  
46.08  
4.87  
140.5  
93.1  
51.89  
51.34  
4.96  
161.5  
66.6  
59.99  
59.94  
5.11  
SHC  
LDB  
LWB  
kW  
TC  
131.8  
131.8  
55.83  
46.71  
7.65  
132.0  
132.0  
55.93  
52.78  
7.65  
140.0  
112.8  
59.54  
58.24  
7.80  
159.5  
71.6  
67.05  
66.66  
8.16  
123.7  
123.7  
51.65  
44.71  
7.51  
125.4  
120.7  
52.50  
50.85  
7.53  
135.8  
101.0  
57.11  
56.16  
7.72  
155.2  
66.9  
64.88  
64.65  
8.08  
112.6  
112.6  
45.59  
41.70  
7.31  
118.3  
103.8  
48.47  
47.54  
7.41  
129.3  
88.1  
53.38  
52.79  
7.60  
148.5  
61.7  
61.44  
61.35  
7.95  
SHC  
LDB  
LWB  
kW  
TC  
132.7  
132.7  
55.67  
46.63  
6.94  
132.9  
132.9  
55.77  
52.71  
6.94  
141.2  
113.3  
59.44  
58.15  
7.03  
161.3  
72.2  
66.94  
66.56  
7.28  
124.5  
124.5  
51.48  
44.63  
6.84  
126.2  
121.1  
52.39  
50.77  
6.86  
136.9  
101.4  
57.00  
56.06  
6.98  
156.8  
67.5  
64.76  
64.53  
7.22  
113.2  
113.2  
45.41  
41.61  
6.72  
119.1  
104.2  
48.35  
47.43  
6.78  
130.2  
88.5  
53.26  
52.67  
6.91  
149.8  
62.2  
61.29  
61.21  
7.14  
SHC  
LDB  
LWB  
kW  
75  
TC  
133.2  
133.2  
55.58  
46.59  
6.53  
133.3  
133.3  
55.68  
52.68  
6.54  
141.9  
113.6  
59.40  
58.11  
6.60  
162.1  
72.5  
66.89  
66.52  
6.78  
124.9  
124.9  
51.39  
44.59  
6.47  
126.7  
121.4  
52.34  
50.72  
6.48  
137.5  
101.7  
56.95  
56.01  
6.57  
157.6  
67.7  
64.70  
64.47  
6.74  
113.5  
113.5  
45.32  
41.56  
6.38  
119.5  
104.4  
48.29  
47.38  
6.43  
130.7  
88.8  
53.19  
52.61  
6.51  
150.5  
62.5  
61.21  
61.14  
6.68  
SHC  
LDB  
LWB  
kW  
TC  
121.9  
121.9  
57.65  
47.56  
9.68  
122.0  
122.0  
57.75  
53.54  
9.68  
127.6  
107.9  
60.43  
59.08  
9.80  
145.4  
67.0  
67.88  
67.46  
10.18  
114.7  
114.7  
53.72  
45.71  
9.53  
114.9  
114.9  
53.81  
51.89  
9.53  
123.9  
96.2  
58.19  
57.21  
9.72  
141.9  
62.4  
65.90  
65.63  
10.10  
104.7  
104.7  
48.02  
42.92  
9.32  
108.3  
98.9  
49.95  
48.94  
9.39  
118.3  
83.5  
54.78  
54.16  
9.60  
136.2  
57.3  
62.76  
62.64  
9.98  
SHC  
LDB  
LWB  
kW  
TC  
122.8  
122.8  
57.49  
47.49  
8.89  
122.9  
122.9  
57.59  
53.47  
8.90  
128.7  
108.3  
60.36  
59.01  
8.97  
147.1  
67.5  
67.78  
67.37  
9.23  
115.4  
115.4  
53.55  
45.63  
8.80  
115.6  
115.6  
53.65  
51.81  
8.80  
124.9  
96.6  
58.10  
57.12  
8.92  
143.3  
62.9  
65.79  
65.53  
9.18  
105.3  
105.3  
47.83  
42.83  
8.66  
109.1  
99.3  
49.83  
48.83  
8.71  
119.2  
83.8  
54.67  
54.05  
8.85  
137.4  
57.7  
62.63  
62.51  
9.09  
SHC  
LDB  
LWB  
kW  
95  
TC  
123.2  
123.2  
57.42  
47.45  
8.45  
123.3  
123.3  
57.51  
53.44  
8.45  
129.3  
108.5  
60.31  
58.97  
8.51  
147.9  
67.8  
67.73  
67.33  
8.69  
115.8  
115.8  
53.47  
45.59  
8.38  
116.0  
116.0  
53.56  
51.78  
8.38  
125.5  
96.8  
58.06  
57.07  
8.47  
144.1  
63.1  
65.74  
65.47  
8.65  
105.6  
105.6  
47.74  
42.79  
8.29  
109.4  
99.5  
49.77  
48.78  
8.32  
119.7  
84.0  
54.61  
53.99  
8.42  
138.0  
58.0  
62.56  
62.45  
8.59  
SHC  
LDB  
LWB  
kW  
TC  
116.5  
116.5  
58.64  
48.01  
10.81  
116.6  
116.6  
58.73  
53.94  
10.82  
120.9  
105.2  
60.93  
59.53  
10.91  
137.9  
64.6  
68.32  
67.89  
11.29  
109.8  
109.8  
54.84  
46.25  
10.66  
109.9  
109.9  
54.94  
52.37  
10.66  
117.5  
93.6  
58.78  
57.76  
10.84  
134.6  
59.9  
66.45  
66.16  
11.22  
100.4  
100.4  
49.32  
43.57  
10.45  
102.9  
96.3  
50.73  
49.66  
10.51  
112.5  
81.0  
55.53  
54.88  
10.72  
129.4  
54.9  
63.47  
63.33  
11.10  
SHC  
LDB  
LWB  
kW  
TC  
117.3  
117.3  
58.49  
47.95  
10.00  
117.4  
117.4  
58.58  
53.88  
10.00  
121.9  
105.6  
60.85  
59.46  
10.07  
139.4  
65.1  
68.23  
67.80  
10.33  
110.5  
110.5  
54.68  
46.17  
9.90  
110.6  
110.6  
54.78  
52.30  
9.91  
118.5  
94.0  
58.69  
57.68  
10.02  
136.0  
60.4  
66.34  
66.06  
10.28  
101.0  
101.0  
49.14  
43.48  
9.77  
103.7  
96.6  
50.63  
49.56  
9.81  
113.3  
81.3  
55.42  
54.78  
9.95  
130.6  
55.3  
63.34  
63.21  
10.20  
SHC  
LDB  
LWB  
kW  
105  
TC  
117.7  
117.7  
58.42  
47.91  
9.54  
117.8  
117.8  
58.51  
53.85  
9.54  
122.5  
105.8  
60.81  
59.42  
9.59  
140.1  
65.3  
68.19  
67.76  
9.77  
110.8  
110.8  
54.60  
46.13  
9.47  
111.0  
111.0  
54.71  
52.26  
9.47  
119.0  
94.2  
58.64  
57.64  
9.55  
136.7  
60.6  
66.29  
66.01  
9.74  
101.3  
101.3  
49.06  
43.44  
9.37  
104.0  
96.8  
50.58  
49.52  
9.40  
113.7  
81.5  
55.37  
54.73  
9.50  
131.2  
55.5  
63.28  
63.15  
9.68  
SHC  
LDB  
LWB  
kW  
TC  
110.8  
110.8  
59.69  
48.49  
12.01  
110.9  
110.9  
59.78  
54.37  
12.01  
114.0  
102.3  
61.44  
59.99  
12.08  
129.9  
62.0  
68.78  
68.33  
12.47  
104.5  
104.5  
56.04  
46.81  
11.86  
104.7  
104.7  
56.14  
52.87  
11.87  
110.8  
90.9  
59.38  
58.34  
12.01  
127.0  
57.4  
67.02  
66.71  
12.40  
95.9  
95.9  
50.71  
44.26  
11.66  
97.3  
93.5  
51.57  
50.42  
11.70  
106.2  
78.4  
56.30  
55.64  
11.90  
122.3  
52.4  
64.21  
64.05  
12.29  
SHC  
LDB  
LWB  
kW  
TC  
111.6  
111.6  
59.55  
48.43  
11.20  
111.7  
111.7  
59.63  
54.31  
11.20  
114.9  
102.7  
61.38  
59.93  
11.25  
131.3  
62.5  
68.70  
68.25  
11.50  
105.2  
105.2  
55.90  
46.74  
11.09  
105.3  
105.3  
56.00  
52.81  
11.10  
111.7  
91.3  
59.31  
58.26  
11.20  
128.2  
57.8  
66.92  
66.62  
11.46  
96.3  
96.3  
50.58  
44.19  
10.96  
97.9  
93.8  
51.50  
50.34  
10.98  
107.0  
78.7  
56.21  
55.54  
11.13  
123.4  
52.8  
64.10  
63.95  
11.38  
SHC  
LDB  
LWB  
kW  
115  
TC  
111.9  
111.9  
59.48  
48.40  
10.73  
112.0  
112.0  
59.56  
54.28  
10.73  
115.4  
102.9  
61.34  
59.90  
10.77  
132.0  
62.7  
68.66  
68.22  
10.95  
105.5  
105.5  
55.82  
46.70  
10.66  
105.7  
105.7  
55.91  
52.77  
10.66  
112.1  
91.5  
59.26  
58.23  
10.73  
128.9  
58.1  
66.88  
66.57  
10.91  
96.6  
96.6  
50.48  
44.14  
10.56  
98.3  
94.0  
51.44  
50.29  
10.58  
107.4  
78.9  
56.15  
55.49  
10.68  
124.0  
53.0  
64.04  
63.89  
10.86  
SHC  
LDB  
LWB  
kW  
LEGEND  
BF  
ECT  
EDB  
Bypass Factor  
Entering Condenser Temperature (F)  
Entering Dry Bulb (F)  
EWB — Entering Wet Bulb (F)  
SHC  
TC  
kW  
Sensible Capacity (1000 Btu/hr)  
LDB  
LWB  
Leaving Dry Bulb (F)  
Leaving Wet Bulb (F)  
Total Capacity (1000 Btu/hr)  
Compressor Motor Power Input (kilowatts)  
10  
GROSS COOLING CAPACITIES (cont)  
50XCA14 (12 TONS)  
AIR ENTERING EVAPORATOR — 80 F Edb (F) - CFM  
Entering  
Condenser Air  
6000  
4800  
3600  
Air Entering Evaporator — Ewb (F)  
57  
0.24  
165.3  
165.3  
54.74  
46.20  
6.11  
62  
0.09  
166.3  
163.1  
55.21  
52.28  
6.13  
67  
0.08  
178.4  
136.5  
59.37  
57.65  
6.21  
75  
0.05  
202.5  
88.8  
66.62  
66.14  
6.39  
57  
0.38  
155.0  
155.0  
50.40  
44.11  
6.05  
62  
0.15  
159.4  
146.7  
52.14  
50.11  
6.08  
67  
0.12  
172.8  
123.2  
56.73  
55.43  
6.17  
75  
0.10  
196.7  
83.4  
64.30  
64.00  
6.34  
57  
0.47  
141.0  
141.0  
44.09  
40.93  
5.97  
62  
0.25  
150.5  
127.1  
47.82  
46.54  
6.02  
67  
0.15  
164.0  
108.6  
52.68  
51.85  
6.11  
75  
0.13  
187.6  
77.5  
60.60  
60.51  
6.27  
ECT (F)  
CFM  
6000  
BF  
TC  
SHC  
LDB  
LWB  
kW  
TC  
165.8  
165.8  
54.66  
46.17  
5.51  
166.9  
163.7  
55.13  
52.24  
5.51  
179.2  
136.8  
59.33  
57.60  
5.54  
204.0  
89.3  
66.54  
66.07  
5.62  
155.5  
155.5  
50.31  
44.07  
5.48  
159.9  
147.0  
52.08  
50.07  
5.49  
173.5  
123.5  
56.69  
55.38  
5.53  
197.8  
83.8  
64.23  
63.93  
5.60  
141.3  
141.3  
44.01  
40.89  
5.45  
150.8  
127.2  
47.81  
46.51  
5.47  
164.6  
108.8  
52.63  
51.79  
5.50  
188.6  
77.8  
60.51  
60.42  
5.57  
SHC  
LDB  
LWB  
kW  
55  
8000  
9500  
6000  
8000  
9500  
6000  
8000  
9500  
6000  
8000  
9500  
6000  
8000  
9500  
TC  
166.2  
166.2  
54.61  
46.14  
5.24  
167.2  
163.8  
55.10  
52.22  
5.24  
179.7  
137.0  
59.29  
57.57  
5.26  
204.6  
89.5  
66.51  
66.04  
5.32  
155.8  
155.8  
50.25  
44.04  
5.23  
160.2  
147.1  
52.06  
50.05  
5.24  
174.0  
123.7  
56.64  
55.34  
5.25  
198.5  
84.1  
64.18  
63.88  
5.30  
141.6  
141.6  
43.95  
40.86  
5.22  
151.2  
127.4  
47.76  
46.47  
5.22  
165.0  
109.0  
52.58  
51.75  
5.24  
189.2  
78.1  
60.46  
60.37  
5.28  
SHC  
LDB  
LWB  
kW  
TC  
155.1  
155.1  
56.31  
46.94  
8.16  
155.3  
155.3  
56.40  
52.99  
8.16  
165.2  
131.2  
60.17  
58.41  
8.24  
187.7  
83.8  
67.37  
66.85  
8.44  
145.8  
145.8  
52.15  
44.96  
8.09  
148.1  
141.1  
53.20  
51.05  
8.11  
160.3  
118.0  
57.71  
56.36  
8.21  
182.7  
78.5  
65.22  
64.88  
8.39  
133.1  
133.1  
46.11  
41.97  
8.00  
140.1  
122.0  
49.13  
47.77  
8.05  
152.7  
103.6  
53.94  
53.05  
8.14  
174.9  
72.7  
61.79  
61.65  
8.33  
SHC  
LDB  
LWB  
kW  
TC  
155.7  
155.7  
56.22  
46.90  
7.45  
155.9  
155.9  
56.30  
52.94  
7.46  
166.0  
131.5  
60.13  
58.36  
7.49  
189.0  
84.2  
67.30  
66.79  
7.58  
146.3  
146.3  
52.06  
44.92  
7.43  
148.9  
141.4  
53.15  
50.99  
7.44  
161.0  
118.3  
57.66  
56.31  
7.47  
183.8  
78.9  
65.14  
64.80  
7.56  
133.4  
133.4  
46.02  
41.92  
7.39  
140.6  
122.2  
49.08  
47.71  
7.41  
153.3  
103.8  
53.87  
52.99  
7.45  
175.8  
73.0  
61.70  
61.56  
7.53  
SHC  
LDB  
LWB  
kW  
75  
TC  
156.1  
156.1  
56.15  
46.87  
7.14  
156.2  
156.2  
56.26  
52.92  
7.14  
166.6  
131.8  
60.09  
58.33  
7.15  
189.8  
84.5  
67.26  
66.75  
7.20  
146.7  
146.7  
51.99  
44.89  
7.13  
149.2  
141.5  
53.12  
50.97  
7.13  
161.6  
118.5  
57.61  
56.27  
7.15  
184.6  
79.2  
65.09  
64.76  
7.19  
133.7  
133.7  
45.95  
41.89  
7.12  
141.0  
122.4  
49.02  
47.67  
7.12  
153.8  
104.0  
53.82  
52.94  
7.14  
176.4  
73.3  
61.64  
61.51  
7.17  
SHC  
LDB  
LWB  
kW  
TC  
143.5  
143.5  
58.08  
47.76  
10.55  
143.6  
143.6  
58.17  
53.72  
10.55  
150.6  
125.4  
61.05  
59.23  
10.61  
171.0  
78.3  
68.19  
67.63  
10.80  
135.3  
135.3  
54.17  
45.93  
10.48  
135.9  
134.3  
54.48  
52.05  
10.48  
146.4  
112.3  
58.78  
57.38  
10.57  
166.9  
73.1  
66.22  
65.84  
10.77  
124.1  
124.1  
48.39  
43.12  
10.39  
127.8  
115.9  
50.65  
49.19  
10.27  
140.0  
98.1  
55.31  
54.37  
10.52  
160.6  
67.5  
63.08  
62.89  
10.71  
SHC  
LDB  
LWB  
kW  
TC  
144.1  
144.1  
57.98  
47.71  
9.79  
144.3  
144.3  
58.07  
53.68  
9.79  
151.6  
125.8  
60.98  
59.17  
9.82  
172.4  
78.7  
68.13  
67.57  
9.90  
135.8  
135.8  
54.07  
45.88  
9.76  
136.7  
134.6  
54.44  
51.98  
9.77  
147.1  
112.6  
58.73  
57.33  
9.80  
168.1  
73.5  
66.15  
65.77  
9.88  
124.3  
124.3  
48.35  
43.10  
9.73  
129.2  
116.6  
50.48  
49.02  
9.74  
140.6  
98.3  
55.25  
54.31  
9.78  
161.3  
67.7  
63.01  
62.83  
9.85  
SHC  
LDB  
LWB  
kW  
95  
TC  
144.6  
144.6  
57.90  
47.68  
9.44  
144.8  
144.8  
58.00  
53.65  
9.44  
152.1  
126.0  
60.96  
59.15  
9.45  
173.3  
79.1  
68.08  
67.53  
9.49  
136.2  
136.2  
53.98  
45.84  
9.43  
137.0  
134.8  
54.40  
51.96  
9.43  
147.7  
112.9  
58.68  
57.28  
9.44  
168.9  
73.8  
66.10  
65.72  
9.48  
124.7  
124.7  
48.26  
43.05  
9.43  
129.4  
116.7  
50.44  
49.00  
9.43  
141.2  
98.6  
55.18  
54.25  
9.44  
162.0  
68.0  
62.95  
62.77  
9.47  
SHC  
LDB  
LWB  
kW  
TC  
137.3  
137.3  
59.03  
48.20  
11.85  
137.4  
137.4  
59.12  
54.11  
11.85  
142.6  
122.2  
61.53  
59.68  
11.90  
162.4  
75.6  
68.60  
68.04  
12.09  
129.7  
129.7  
55.24  
46.44  
11.78  
129.6  
129.6  
55.38  
52.56  
11.78  
138.8  
109.3  
59.36  
57.93  
11.87  
158.6  
70.4  
66.74  
66.34  
12.05  
119.0  
119.0  
49.70  
43.77  
11.68  
122.1  
113.2  
51.34  
49.83  
11.71  
133.3  
95.4  
55.99  
55.05  
11.82  
152.6  
64.7  
63.77  
63.57  
12.00  
SHC  
LDB  
LWB  
kW  
TC  
137.7  
137.7  
58.96  
48.17  
11.08  
137.8  
137.8  
59.05  
54.08  
11.08  
143.7  
122.6  
61.47  
59.62  
11.11  
163.6  
75.9  
68.56  
67.98  
11.19  
130.0  
130.0  
55.18  
46.41  
11.06  
130.3  
130.3  
55.24  
52.50  
11.06  
139.5  
109.5  
59.31  
57.88  
11.09  
159.4  
70.6  
66.70  
66.29  
11.17  
119.2  
119.2  
49.65  
43.74  
11.02  
122.8  
113.5  
51.27  
49.75  
11.03  
133.6  
95.4  
55.99  
55.02  
11.07  
153.3  
64.9  
63.72  
63.51  
11.15  
SHC  
LDB  
LWB  
kW  
105  
TC  
138.2  
138.2  
58.88  
48.13  
10.73  
138.4  
138.4  
58.97  
54.05  
10.73  
144.1  
122.8  
61.44  
59.59  
10.74  
164.3  
76.1  
68.52  
67.95  
10.77  
130.5  
130.5  
55.09  
46.37  
10.72  
130.6  
130.6  
55.19  
52.47  
10.72  
140.2  
109.8  
59.25  
57.83  
10.73  
160.2  
70.9  
66.65  
66.25  
10.76  
119.6  
119.6  
49.54  
43.69  
10.71  
123.1  
113.6  
51.23  
49.72  
10.72  
134.2  
95.6  
55.92  
54.96  
10.73  
154.0  
65.1  
63.66  
63.46  
10.75  
SHC  
LDB  
LWB  
kW  
TC  
130.4  
130.4  
60.08  
48.67  
13.18  
130.5  
130.5  
60.16  
54.53  
13.18  
134.2  
118.8  
62.04  
60.14  
13.22  
152.8  
72.5  
69.07  
68.48  
13.39  
123.4  
123.4  
56.44  
47.00  
13.12  
123.5  
123.5  
56.54  
53.04  
13.12  
130.6  
106.0  
59.97  
58.51  
13.18  
149.5  
67.4  
67.31  
66.89  
13.36  
113.4  
113.4  
51.12  
44.46  
13.02  
115.2  
109.7  
52.21  
50.60  
13.04  
125.4  
92.0  
56.84  
55.85  
13.14  
144.1  
61.7  
64.51  
64.28  
13.31  
SHC  
LDB  
LWB  
kW  
TC  
130.8  
130.8  
60.02  
48.65  
12.45  
130.9  
130.9  
60.10  
54.51  
12.45  
135.3  
119.2  
61.98  
60.08  
12.47  
154.0  
72.8  
69.03  
68.43  
12.54  
123.7  
123.7  
56.39  
46.98  
12.42  
123.8  
123.8  
56.48  
53.02  
12.42  
131.6  
106.4  
59.89  
58.44  
12.45  
150.2  
67.5  
67.28  
66.85  
12.52  
113.6  
113.6  
51.07  
44.44  
12.38  
116.0  
110.0  
52.13  
50.51  
12.39  
126.1  
92.2  
56.78  
55.78  
12.43  
144.8  
61.9  
64.47  
64.23  
12.50  
SHC  
LDB  
LWB  
kW  
115  
TC  
131.4  
131.4  
59.93  
48.61  
12.10  
131.5  
131.5  
60.01  
54.47  
12.10  
135.8  
119.4  
61.95  
60.05  
12.11  
154.5  
73.0  
69.00  
68.40  
12.13  
124.2  
124.2  
56.29  
46.93  
12.10  
124.3  
124.3  
56.39  
52.98  
12.10  
132.1  
106.6  
59.86  
58.41  
12.11  
151.0  
67.8  
67.23  
66.80  
12.13  
114.0  
114.0  
50.96  
44.39  
12.08  
116.3  
110.2  
52.09  
50.48  
12.09  
126.7  
92.5  
56.70  
55.72  
12.10  
145.4  
62.1  
64.41  
64.18  
12.12  
SHC  
LDB  
LWB  
kW  
LEGEND  
BF  
ECT  
EDB  
Bypass Factor  
Entering Condenser Temperature (F)  
Entering Dry Bulb (F)  
EWB — Entering Wet Bulb (F)  
SHC  
TC  
kW  
Sensible Capacity (1000 Btu/hr)  
LDB  
LWB  
Leaving Dry Bulb (F)  
Leaving Wet Bulb (F)  
Total Capacity (1000 Btu/hr)  
Compressor Motor Power Input (kilowatts)  
11  
Performance data (cont)  
GROSS COOLING CAPACITIES (cont)  
50XCA16 (15 TONS)  
AIR ENTERING EVAPORATOR — 80 F Edb (F) - CFM  
6000  
Entering  
Condenser Air  
7500  
4500  
Air Entering Evaporator — Ewb (F)  
57  
0.26  
203.8  
203.8  
55.09  
46.37  
8.70  
62  
0.06  
204.2  
204.1  
55.18  
52.47  
8.72  
67  
0.05  
216.8  
172.7  
59.12  
57.93  
8.96  
75  
0.03  
245.4  
109.9  
66.76  
66.44  
9.57  
57  
0.39  
191.2  
191.2  
50.79  
44.30  
8.43  
62  
0.15  
194.5  
185.0  
51.89  
50.43  
8.50  
67  
0.08  
210.3  
154.6  
56.64  
55.77  
8.83  
75  
0.06  
239.1  
102.7  
64.53  
64.34  
9.44  
57  
0.48  
173.8  
173.8  
44.59  
41.19  
8.09  
62  
0.26  
183.8  
159.1  
47.79  
46.96  
8.28  
67  
0.11  
200.2  
135.2  
52.78  
52.26  
8.63  
75  
0.09  
228.8  
94.9  
60.98  
60.92  
9.22  
ECT (F)  
CFM  
6000  
BF  
TC  
SHC  
LDB  
LWB  
kW  
TC  
205.2  
205.2  
54.92  
46.29  
7.91  
205.4  
205.4  
55.02  
52.40  
7.92  
219.2  
173.6  
59.01  
57.82  
8.14  
249.0  
111.0  
66.62  
66.30  
8.64  
192.4  
192.4  
50.60  
44.21  
7.72  
196.1  
185.8  
51.77  
50.32  
7.77  
212.5  
155.5  
56.50  
55.64  
8.04  
242.3  
103.8  
64.37  
64.18  
8.53  
174.8  
174.8  
44.40  
41.09  
7.44  
184.8  
159.5  
47.70  
46.86  
7.60  
201.7  
135.8  
52.67  
52.13  
7.86  
231.5  
95.9  
60.78  
60.73  
8.35  
SHC  
LDB  
LWB  
kW  
55  
8000  
9500  
6000  
8000  
9500  
6000  
8000  
9500  
6000  
8000  
9500  
6000  
8000  
9500  
TC  
206.2  
206.2  
54.80  
46.23  
7.61  
206.4  
206.4  
54.91  
52.36  
7.61  
220.2  
174.0  
58.96  
57.77  
7.82  
250.6  
111.5  
66.55  
66.24  
8.25  
193.2  
193.2  
50.49  
44.15  
7.42  
196.8  
186.1  
51.72  
50.28  
7.48  
213.4  
155.9  
56.44  
55.58  
7.72  
243.6  
104.3  
64.30  
64.11  
8.17  
175.4  
175.4  
44.27  
41.02  
7.18  
185.6  
160.0  
47.61  
46.79  
7.32  
202.7  
136.3  
52.57  
52.05  
7.56  
232.6  
96.3  
60.70  
60.65  
8.00  
SHC  
LDB  
LWB  
kW  
TC  
190.2  
190.2  
56.75  
47.15  
10.80  
190.4  
190.4  
56.85  
53.17  
10.80  
199.8  
165.9  
59.94  
58.71  
11.03  
226.8  
103.7  
67.50  
67.15  
11.69  
179.0  
179.0  
52.66  
45.21  
10.54  
180.0  
177.2  
53.06  
51.39  
10.56  
194.2  
148.1  
57.62  
56.73  
10.89  
221.2  
96.6  
65.45  
65.23  
11.55  
163.3  
163.3  
46.74  
42.29  
10.18  
169.9  
152.4  
49.14  
48.25  
10.33  
185.3  
128.7  
54.08  
53.51  
10.69  
212.2  
88.8  
62.18  
62.09  
11.33  
SHC  
LDB  
LWB  
kW  
TC  
191.6  
191.6  
56.58  
47.07  
9.93  
191.8  
191.8  
56.67  
53.10  
9.93  
202.1  
166.8  
59.83  
58.60  
10.12  
229.7  
104.6  
67.39  
67.04  
10.63  
180.1  
180.1  
52.48  
45.12  
9.72  
181.6  
178.0  
52.95  
51.28  
9.75  
195.9  
148.7  
57.53  
56.63  
10.01  
223.8  
97.4  
65.32  
65.10  
10.52  
164.1  
164.1  
46.57  
42.20  
9.44  
171.3  
153.0  
49.01  
48.12  
9.57  
186.8  
129.3  
53.96  
53.39  
9.84  
214.4  
89.7  
62.02  
61.94  
10.35  
SHC  
LDB  
LWB  
kW  
75  
TC  
192.6  
192.6  
56.46  
47.01  
9.55  
192.8  
192.8  
56.56  
53.05  
9.55  
203.1  
167.2  
59.78  
58.56  
9.72  
231.5  
105.2  
67.31  
66.97  
10.19  
180.9  
180.9  
52.36  
45.07  
9.37  
182.3  
178.4  
52.88  
51.24  
9.39  
197.1  
149.2  
57.45  
56.56  
9.62  
225.5  
98.0  
65.23  
65.02  
10.09  
164.7  
164.7  
46.44  
42.14  
9.12  
171.9  
153.3  
48.95  
48.07  
9.23  
187.8  
129.8  
53.86  
53.31  
9.48  
215.9  
90.2  
61.92  
61.84  
9.93  
SHC  
LDB  
LWB  
kW  
TC  
175.5  
175.5  
58.55  
47.98  
13.24  
175.6  
175.6  
58.65  
53.91  
13.25  
181.6  
158.6  
60.82  
59.52  
13.41  
205.9  
96.9  
68.31  
67.93  
14.07  
165.6  
165.6  
54.70  
46.18  
12.98  
165.8  
165.8  
54.80  
52.31  
12.99  
176.7  
141.0  
58.68  
57.74  
13.28  
201.3  
89.9  
66.45  
66.20  
13.94  
151.6  
151.6  
49.11  
43.47  
12.62  
155.4  
145.3  
50.56  
49.58  
12.72  
169.3  
122.0  
55.43  
54.84  
13.08  
194.0  
82.4  
63.47  
63.35  
13.74  
SHC  
LDB  
LWB  
kW  
TC  
176.7  
176.7  
58.41  
47.91  
12.31  
176.8  
176.8  
58.50  
53.85  
12.31  
183.6  
159.4  
60.72  
59.44  
12.45  
208.6  
97.7  
68.21  
67.83  
12.97  
166.5  
166.5  
54.56  
46.12  
12.11  
166.7  
166.7  
54.66  
52.25  
12.11  
178.4  
141.8  
58.57  
57.65  
12.35  
203.8  
90.7  
66.33  
66.08  
12.87  
152.3  
152.3  
48.97  
43.41  
11.82  
156.5  
145.8  
50.46  
49.48  
11.90  
170.4  
122.4  
55.34  
54.74  
12.19  
195.9  
83.0  
63.34  
63.22  
12.71  
SHC  
LDB  
LWB  
kW  
95  
TC  
177.6  
177.6  
58.29  
47.86  
11.89  
177.8  
177.8  
58.38  
53.81  
11.90  
184.5  
159.8  
60.68  
59.40  
12.02  
210.3  
98.4  
68.14  
67.76  
12.49  
167.3  
167.3  
54.44  
46.06  
11.71  
167.5  
167.5  
54.54  
52.20  
11.72  
179.2  
142.1  
58.52  
57.60  
11.92  
205.3  
91.3  
66.25  
66.00  
12.39  
152.9  
152.9  
48.85  
43.35  
11.46  
157.0  
146.1  
50.40  
49.43  
11.53  
171.4  
122.9  
55.24  
54.66  
11.79  
197.3  
83.5  
63.24  
63.13  
12.25  
SHC  
LDB  
LWB  
kW  
TC  
167.5  
167.5  
59.52  
48.42  
14.57  
167.7  
167.7  
59.61  
54.31  
14.57  
171.7  
154.6  
61.30  
59.96  
14.69  
194.9  
93.4  
68.74  
68.34  
15.33  
158.3  
158.3  
55.81  
46.71  
14.32  
158.5  
158.5  
55.91  
52.78  
14.33  
167.1  
137.3  
59.24  
58.29  
14.57  
190.6  
86.4  
66.98  
66.71  
15.21  
145.3  
145.3  
50.39  
44.11  
13.97  
147.3  
141.4  
51.35  
50.30  
14.03  
160.4  
118.3  
56.15  
55.55  
14.38  
184.2  
79.1  
64.13  
64.01  
15.04  
SHC  
LDB  
LWB  
kW  
TC  
168.6  
168.6  
59.39  
48.36  
13.64  
168.8  
168.8  
59.48  
54.26  
13.64  
173.7  
155.4  
61.21  
59.88  
13.75  
197.8  
94.3  
68.63  
68.23  
14.28  
159.1  
159.1  
55.69  
46.65  
13.44  
159.3  
159.3  
55.79  
52.73  
13.44  
169.0  
138.0  
59.14  
58.19  
13.65  
193.0  
87.1  
66.87  
66.60  
14.17  
145.9  
145.9  
50.28  
44.05  
13.15  
148.6  
141.9  
51.25  
50.19  
13.21  
161.7  
118.8  
56.06  
55.45  
13.49  
185.9  
79.5  
64.03  
63.90  
14.02  
SHC  
LDB  
LWB  
kW  
105  
TC  
169.5  
169.5  
59.28  
48.31  
13.21  
169.7  
169.7  
59.37  
54.21  
13.21  
174.6  
155.8  
61.16  
59.84  
13.31  
199.0  
94.7  
68.58  
68.18  
13.78  
159.8  
159.8  
55.59  
46.60  
13.03  
160.0  
160.0  
55.69  
52.68  
13.03  
169.7  
138.4  
59.09  
58.14  
13.22  
194.5  
87.7  
66.78  
66.52  
13.69  
146.5  
146.5  
50.16  
43.99  
12.78  
149.1  
142.2  
51.19  
50.15  
12.83  
162.5  
119.2  
55.99  
55.39  
13.08  
187.2  
80.0  
63.93  
63.81  
13.55  
SHC  
LDB  
LWB  
kW  
TC  
159.0  
159.0  
60.56  
48.89  
15.94  
159.2  
159.2  
60.65  
54.73  
15.94  
161.6  
150.4  
61.82  
60.41  
16.02  
183.2  
89.7  
69.18  
68.76  
16.64  
150.6  
150.6  
56.99  
47.26  
15.70  
150.8  
150.8  
57.08  
53.27  
15.71  
157.3  
133.5  
59.83  
58.85  
15.90  
179.9  
83.0  
67.49  
67.22  
16.54  
138.6  
138.6  
51.77  
44.78  
15.36  
139.3  
137.1  
52.22  
51.01  
15.39  
151.3  
114.6  
56.90  
56.28  
15.73  
173.9  
75.5  
64.84  
64.70  
16.37  
SHC  
LDB  
LWB  
kW  
TC  
160.0  
160.0  
60.44  
48.84  
15.04  
160.2  
160.2  
60.53  
54.68  
15.04  
163.5  
151.1  
61.73  
60.32  
15.11  
186.0  
90.6  
69.08  
68.66  
15.62  
151.4  
151.4  
56.88  
47.20  
14.85  
151.5  
151.5  
56.97  
53.22  
14.85  
159.1  
134.1  
59.73  
58.75  
15.01  
181.7  
83.5  
67.42  
67.13  
15.52  
139.1  
139.1  
51.66  
44.73  
14.57  
140.4  
137.6  
52.11  
50.91  
14.60  
152.4  
115.1  
56.82  
56.19  
14.87  
175.4  
75.9  
64.75  
64.60  
15.38  
SHC  
LDB  
LWB  
kW  
115  
TC  
160.9  
160.9  
60.33  
48.79  
14.62  
161.1  
161.1  
60.42  
54.64  
14.62  
164.3  
151.5  
61.68  
60.29  
14.68  
187.2  
91.0  
69.03  
68.62  
15.13  
152.0  
152.0  
56.77  
47.16  
14.44  
152.2  
152.2  
56.87  
53.18  
14.44  
159.8  
134.4  
59.68  
58.71  
14.60  
183.0  
83.9  
67.35  
67.07  
15.05  
139.7  
139.7  
51.55  
44.67  
14.20  
140.9  
137.9  
52.05  
50.88  
14.23  
153.4  
115.5  
56.73  
56.12  
14.47  
176.6  
76.4  
64.66  
64.52  
14.93  
SHC  
LDB  
LWB  
kW  
LEGEND  
BF  
ECT  
EDB  
Bypass Factor  
Entering Condenser Temperature (F)  
Entering Dry Bulb (F)  
EWB — Entering Wet Bulb (F)  
SHC  
TC  
kW  
Sensible Capacity (1000 Btu/hr)  
LDB  
LWB  
Leaving Dry Bulb (F)  
Leaving Wet Bulb (F)  
Total Capacity (1000 Btu/hr)  
Compressor Motor Power Input (kilowatts)  
12  
GROSS COOLING CAPACITIES (cont)  
50XCA024 (20 TONS)  
AIR ENTERING EVAPORATOR — 80 F Edb (F) - CFM  
Entering  
Condenser Air  
10,000  
8,000  
6,000  
Air Entering Evaporator — Ewb (F)  
57  
0.22  
283.6  
283.6  
54.01  
45.86  
12.84  
62  
0.06  
283.9  
283.9  
54.11  
52.02  
12.85  
67  
0.05  
303.4  
235.7  
58.63  
57.44  
13.26  
75  
0.02  
343.6  
152.1  
66.25  
65.97  
14.06  
57  
0.36  
266.0  
266.0  
49.52  
43.68  
12.50  
62  
0.12  
272.2  
252.8  
51.19  
49.79  
12.62  
67  
0.08  
294.2  
211.8  
56.00  
55.15  
13.07  
75  
0.06  
334.0  
142.4  
63.92  
63.77  
13.86  
57  
0.46  
241.5  
241.5  
43.11  
40.42  
12.04  
62  
0.22  
256.8  
217.7  
46.94  
46.12  
12.34  
67  
0.11  
279.6  
185.8  
51.95  
51.44  
12.78  
75  
0.09  
319.2  
132.0  
60.18  
60.16  
13.56  
ECT (F)  
CFM  
BF  
TC  
SHC  
LDB  
LWB  
kW  
8,550  
TC  
285.9  
285.9  
53.79  
45.75  
11.73  
286.2  
286.2  
53.90  
51.93  
11.75  
307.0  
237.3  
58.48  
57.31  
12.06  
348.6  
153.7  
66.10  
65.82  
12.72  
267.7  
267.7  
49.33  
43.58  
11.46  
274.4  
253.9  
51.06  
49.68  
11.56  
297.3  
213.1  
55.85  
55.01  
11.91  
338.8  
144.0  
63.74  
63.59  
12.56  
242.7  
242.7  
42.92  
40.33  
11.10  
258.5  
218.6  
46.80  
45.99  
11.33  
282.1  
186.9  
51.79  
51.28  
11.68  
323.0  
133.4  
59.96  
59.95  
12.31  
SHC  
LDB  
LWB  
kW  
55  
11,400  
12,700  
8,550  
TC  
286.5  
286.5  
53.74  
45.73  
11.46  
287.3  
284.4  
54.06  
51.89  
11.33  
308.0  
237.7  
58.44  
57.28  
11.60  
350.2  
154.3  
66.05  
65.77  
12.19  
268.1  
268.1  
49.27  
43.56  
11.20  
274.9  
254.3  
51.03  
49.65  
11.30  
298.2  
213.5  
55.81  
54.97  
11.64  
340.1  
144.5  
63.68  
63.53  
12.04  
243.0  
243.0  
42.87  
40.30  
10.85  
259.0  
218.9  
46.77  
45.96  
11.07  
282.8  
187.2  
51.74  
51.24  
11.41  
324.1  
133.8  
59.90  
59.89  
11.82  
SHC  
LDB  
LWB  
kW  
TC  
265.8  
265.8  
55.64  
46.63  
16.17  
266.0  
266.0  
55.74  
52.71  
16.18  
281.2  
227.0  
59.41  
58.20  
16.52  
318.7  
143.8  
66.99  
66.68  
17.40  
249.8  
249.8  
51.38  
44.59  
15.81  
252.9  
243.1  
52.29  
50.76  
15.88  
273.0  
203.1  
56.98  
56.10  
16.33  
310.6  
134.2  
64.84  
64.65  
17.21  
227.4  
227.4  
45.26  
41.53  
15.33  
238.7  
209.0  
48.26  
47.41  
15.57  
260.2  
177.2  
53.23  
52.69  
16.05  
297.4  
123.9  
61.38  
61.33  
16.90  
SHC  
LDB  
LWB  
kW  
TC  
267.9  
267.9  
55.44  
46.54  
14.81  
268.2  
268.2  
55.54  
52.63  
14.82  
284.7  
228.4  
59.28  
58.09  
15.11  
323.1  
145.2  
66.87  
66.56  
15.74  
251.4  
251.4  
51.19  
44.50  
14.54  
255.2  
244.2  
52.16  
50.64  
14.62  
275.6  
204.1  
56.87  
55.99  
14.94  
314.5  
135.6  
64.69  
64.50  
15.60  
228.6  
228.6  
45.08  
41.44  
14.18  
240.6  
209.9  
48.13  
47.27  
14.39  
262.3  
178.1  
53.10  
52.56  
14.72  
300.7  
125.1  
61.20  
61.15  
15.36  
SHC  
LDB  
LWB  
kW  
75  
11,400  
12,700  
8,550  
TC  
268.8  
268.8  
55.36  
46.50  
14.47  
269.1  
269.1  
55.46  
52.59  
14.47  
285.5  
228.8  
59.25  
58.06  
14.72  
325.1  
145.9  
66.80  
66.50  
15.36  
252.1  
252.1  
51.11  
44.46  
14.21  
255.7  
244.6  
52.12  
50.61  
14.27  
276.8  
204.7  
56.80  
55.93  
14.59  
316.2  
136.2  
64.62  
64.44  
15.21  
229.1  
229.1  
44.99  
41.40  
13.87  
241.1  
210.1  
48.09  
47.24  
14.05  
263.3  
178.6  
53.03  
52.50  
14.38  
302.2  
125.6  
61.12  
61.08  
14.98  
SHC  
LDB  
LWB  
kW  
TC  
246.1  
246.1  
57.44  
47.47  
20.12  
246.4  
246.4  
57.53  
53.46  
20.13  
256.8  
217.3  
60.29  
59.04  
20.40  
290.7  
134.7  
67.82  
67.48  
21.30  
232.0  
232.0  
53.42  
45.58  
19.76  
231.9  
231.9  
53.57  
51.79  
19.76  
249.7  
193.6  
58.05  
57.13  
20.22  
284.2  
125.3  
65.84  
65.63  
21.11  
212.0  
212.0  
47.62  
42.73  
19.25  
219.1  
199.5  
49.70  
48.77  
19.43  
238.8  
168.1  
54.61  
54.04  
19.94  
273.1  
115.1  
62.69  
62.61  
20.83  
SHC  
LDB  
LWB  
kW  
TC  
247.9  
247.9  
57.27  
47.39  
18.61  
248.2  
248.2  
57.37  
53.39  
18.61  
259.7  
218.5  
60.18  
58.94  
18.83  
295.0  
136.1  
67.70  
67.36  
19.50  
233.3  
233.3  
53.27  
45.50  
18.34  
234.0  
233.9  
53.33  
51.69  
18.35  
251.7  
194.4  
57.97  
57.04  
18.68  
287.7  
126.5  
65.71  
65.50  
19.36  
212.8  
212.8  
47.48  
42.66  
17.97  
220.7  
200.2  
49.59  
48.66  
18.11  
240.4  
168.7  
54.51  
53.93  
18.47  
276.1  
116.1  
62.53  
62.46  
19.14  
SHC  
LDB  
LWB  
kW  
95  
11,400  
12,700  
8,550  
TC  
248.9  
248.9  
57.18  
47.35  
18.19  
249.2  
249.2  
57.27  
53.35  
18.19  
260.6  
218.9  
60.15  
58.91  
18.39  
297.0  
136.8  
67.63  
67.30  
19.02  
234.2  
234.2  
53.17  
45.46  
17.94  
234.7  
233.6  
53.37  
51.65  
17.95  
253.0  
195.0  
57.89  
56.99  
18.26  
289.5  
127.1  
65.64  
65.43  
18.89  
213.5  
213.5  
47.38  
42.61  
17.59  
221.2  
200.5  
49.54  
48.62  
17.73  
241.5  
169.3  
54.43  
53.87  
18.07  
277.6  
116.7  
62.45  
62.38  
18.68  
SHC  
LDB  
LWB  
kW  
TC  
235.4  
235.4  
58.42  
47.92  
22.31  
235.7  
235.7  
58.51  
53.86  
22.32  
243.1  
211.9  
60.78  
59.50  
22.52  
275.6  
129.9  
68.26  
67.90  
23.42  
222.1  
222.1  
54.55  
46.11  
21.95  
222.4  
222.4  
54.65  
52.25  
21.96  
236.4  
188.5  
58.63  
57.71  
22.35  
269.4  
120.4  
66.39  
66.16  
23.25  
203.4  
203.4  
48.93  
43.39  
21.44  
208.0  
194.1  
50.50  
49.53  
21.58  
226.5  
163.0  
55.37  
54.79  
22.08  
259.4  
110.2  
63.41  
63.32  
22.98  
SHC  
LDB  
LWB  
kW  
TC  
237.0  
237.0  
58.27  
47.85  
20.77  
237.2  
237.2  
58.37  
53.80  
20.77  
246.4  
213.1  
60.67  
59.39  
20.95  
280.4  
131.4  
68.12  
67.77  
21.63  
223.3  
223.3  
54.42  
46.05  
20.50  
223.6  
223.6  
54.52  
52.19  
20.50  
239.3  
189.5  
58.51  
57.59  
20.81  
273.2  
121.6  
66.26  
66.03  
21.48  
204.1  
204.1  
48.81  
43.33  
20.11  
209.9  
195.0  
50.38  
49.39  
20.22  
228.5  
163.7  
55.26  
54.67  
20.60  
262.6  
111.3  
63.25  
63.15  
21.27  
SHC  
LDB  
LWB  
kW  
105  
11,400  
12,700  
8,550  
TC  
238.1  
238.1  
58.17  
47.81  
20.32  
238.3  
238.3  
58.26  
53.76  
20.32  
247.2  
213.6  
60.63  
59.36  
20.48  
281.7  
131.8  
68.08  
67.73  
21.11  
224.2  
224.2  
54.31  
46.00  
20.07  
224.5  
224.5  
54.41  
52.15  
20.07  
240.1  
189.9  
58.47  
57.55  
20.36  
274.9  
122.2  
66.18  
65.96  
20.99  
204.8  
204.8  
48.71  
43.28  
19.72  
210.4  
195.2  
50.34  
49.36  
19.82  
229.7  
164.3  
55.18  
54.60  
20.17  
264.1  
111.9  
63.16  
63.07  
20.79  
SHC  
LDB  
LWB  
kW  
TC  
223.9  
223.9  
59.48  
48.40  
24.63  
224.1  
224.1  
59.56  
54.29  
24.63  
229.1  
206.2  
61.30  
59.96  
24.78  
259.8  
124.8  
68.71  
68.34  
25.68  
211.6  
211.6  
55.76  
46.68  
24.27  
211.8  
211.8  
55.85  
52.76  
24.28  
223.0  
183.2  
59.23  
58.29  
24.61  
254.3  
115.4  
66.95  
66.71  
25.53  
194.2  
194.2  
50.33  
44.08  
23.76  
196.6  
188.6  
51.34  
50.29  
23.85  
213.9  
157.8  
56.15  
55.55  
24.35  
245.2  
105.3  
64.14  
64.03  
25.26  
SHC  
LDB  
LWB  
kW  
TC  
225.3  
225.3  
59.35  
48.34  
23.05  
225.5  
225.5  
59.43  
54.24  
23.05  
232.2  
207.4  
61.19  
59.86  
23.19  
264.3  
126.2  
68.58  
68.22  
23.86  
212.6  
212.6  
55.64  
46.63  
22.79  
212.9  
212.9  
55.74  
52.71  
22.79  
225.8  
184.2  
59.12  
58.17  
23.05  
257.7  
116.5  
66.83  
66.59  
23.73  
194.8  
194.8  
50.24  
44.03  
22.41  
198.5  
189.3  
51.24  
50.16  
22.48  
215.8  
158.5  
56.05  
55.44  
22.85  
248.3  
106.3  
63.99  
63.88  
23.53  
SHC  
LDB  
LWB  
kW  
115  
11,400  
12,700  
TC  
226.4  
226.4  
59.24  
48.30  
22.59  
226.7  
226.7  
59.33  
54.20  
22.60  
233.1  
207.8  
61.15  
59.83  
22.72  
265.6  
126.7  
68.54  
68.18  
23.33  
213.6  
213.6  
55.52  
46.57  
22.36  
213.9  
213.9  
55.62  
52.66  
22.36  
226.5  
184.5  
59.08  
58.14  
22.60  
259.6  
117.2  
66.75  
66.52  
23.22  
195.6  
195.6  
50.11  
43.97  
22.01  
199.0  
189.6  
51.19  
50.13  
22.08  
217.0  
159.1  
55.97  
55.37  
22.42  
249.9  
106.9  
63.90  
63.80  
23.04  
SHC  
LDB  
LWB  
kW  
LEGEND  
BF  
ECT  
EDB  
Bypass Factor  
Entering Condenser Temperature (F)  
Entering Dry Bulb (F)  
EWB — Entering Wet Bulb (F)  
SHC  
TC  
kW  
Sensible Capacity (1000 Btu/hr)  
LDB  
LWB  
Leaving Dry Bulb (F)  
Leaving Wet Bulb (F)  
Total Capacity (1000 Btu/hr)  
Compressor Motor Power Input (kilowatts)  
13  
Performance data (cont)  
CONDENSER FAN PERFORMANCE  
50XCA06 (5 Tons)  
ESP (in. wg)  
Bhp Rpm  
CFM  
0.00  
0.10  
0.20  
0.30  
0.40  
0.50  
Rpm  
Bhp  
0.19  
0.19  
0.19  
0.19  
0.20  
0.20  
0.20  
0.21  
0.21  
0.21  
0.23  
0.26  
0.29  
Rpm  
594  
588  
582  
576  
570  
564  
573  
589  
605  
622  
638  
655  
672  
Bhp  
0.19  
0.19  
0.19  
0.19  
0.20  
0.20  
0.22  
0.24  
0.26  
0.28  
0.31  
0.34  
0.37  
Rpm  
594  
598  
610  
623  
636  
649  
662  
676  
690  
704  
719  
734  
749  
Bhp  
0.25  
0.27  
0.29  
0.31  
0.33  
0.36  
0.38  
0.41  
0.43  
0.46  
0.49  
0.53  
0.56  
Rpm  
755  
764  
773  
783  
793  
803  
814  
825  
836  
848  
860  
872  
885  
Bhp  
0.33  
0.35  
0.37  
0.40  
0.42  
0.44  
0.47  
0.50  
0.53  
0.56  
0.59  
0.63  
0.67  
Rpm  
828  
836  
844  
852  
861  
870  
880  
890  
901  
911  
923  
934  
946  
Bhp  
0.42  
0.44  
0.46  
0.49  
0.51  
0.54  
0.57  
0.60  
0.63  
0.66  
0.70  
0.74  
0.78  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2600  
2800  
2900  
3000  
594  
588  
582  
576  
570  
564  
558  
552  
546  
540  
550  
570  
590  
0.19  
0.20  
0.21  
0.23  
0.25  
0.27  
0.29  
0.32  
0.34  
0.37  
0.40  
0.43  
0.46  
676  
686  
696  
707  
718  
730  
742  
754  
766  
779  
792  
806  
819  
50XCA06 (5 Tons) (cont)  
ESP (in. wg)  
Bhp Rpm  
CFM  
0.60  
0.70  
0.80  
0.90  
1.00  
1.10  
Rpm  
896  
902  
909  
917  
925  
933  
942  
951  
961  
971  
982  
992  
1003  
Bhp  
0.51  
0.54  
0.56  
0.58  
0.61  
0.64  
0.67  
0.70  
0.74  
0.77  
0.81  
0.85  
0.89  
Rpm  
960  
965  
971  
978  
Bhp  
0.61  
0.64  
0.66  
0.69  
0.72  
0.75  
0.78  
0.81  
0.85  
0.89  
0.93  
0.97  
1.01  
Rpm  
1020  
1025  
1030  
1036  
1042  
1049  
1057  
1064  
1073  
1081  
1090  
1100  
1109  
Bhp  
Rpm  
Bhp  
Rpm  
Bhp  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
2600  
2700  
2800  
2900  
3000  
0.72  
0.74  
0.77  
0.80  
0.83  
0.86  
0.89  
0.93  
0.96  
1.00  
1.05  
1.09  
1.13  
1082  
1086  
1091  
1097  
1103  
1110  
1117  
1125  
1133  
1141  
1150  
1159  
0.86  
0.88  
0.91  
0.94  
0.98  
1.01  
1.05  
1.09  
1.13  
1.17  
1.21  
1.26  
1140  
1145  
1150  
1155  
1161  
1168  
1175  
1183  
1190  
1199  
1207  
1.00  
1.03  
1.06  
1.10  
1.13  
1.17  
1.21  
1.25  
1.30  
1.34  
1.39  
1196  
1201  
1206  
1211  
1217  
1224  
1231  
1238  
1246  
1.16  
1.19  
1.22  
1.26  
1.30  
1.34  
1.39  
1.43  
1.48  
985  
993  
1001  
1009  
1018  
1028  
1037  
1047  
1057  
LEGEND  
Bhp — Brake Horsepower  
ESP — External Static Pressure  
NOTES:  
3. Interpolation is permitted; extrapolation is not.  
4. Fan performance is based on filter, unit casing, and wet coil  
losses.  
1. Units are available with several motor hp options. Refer to the  
physical data table.  
2. Static pressure losses must be applied to external static pressure  
before entering the fan performance table.  
14  
CONDENSER FAN PERFORMANCE (cont)  
50XCA08 (71/2 Tons)  
ESP (in. wg)  
CFM  
0.00  
Rpm  
0.10  
Rpm  
0.20  
Rpm  
0.30  
Rpm  
0.40  
Rpm  
807  
824  
842  
860  
879  
898  
918  
938  
0.50  
Rpm  
872  
887  
903  
920  
938  
956  
974  
993  
1012  
1032  
1053  
1073  
1094  
1116  
1138  
0.60  
Rpm  
932  
946  
961  
977  
0.70  
Rpm  
Bhp  
0.25  
0.26  
0.27  
0.28  
0.31  
0.36  
0.42  
0.47  
0.54  
0.60  
0.68  
0.75  
0.84  
0.93  
1.03  
Bhp  
0.25  
0.27  
0.31  
0.35  
0.40  
0.45  
0.51  
0.57  
0.64  
0.71  
0.79  
0.87  
0.96  
1.05  
1.15  
Bhp  
0.32  
0.36  
0.40  
0.45  
0.50  
0.55  
0.61  
0.68  
0.75  
0.82  
0.90  
0.99  
1.08  
1.18  
1.28  
Bhp  
0.41  
0.45  
0.49  
0.54  
0.60  
0.66  
0.72  
0.79  
0.86  
0.94  
1.02  
1.11  
1.21  
1.31  
1.42  
Bhp  
0.50  
0.55  
0.59  
0.65  
0.71  
0.77  
0.83  
0.91  
0.98  
1.06  
1.15  
1.25  
1.34  
1.45  
1.56  
Bhp  
0.60  
0.65  
0.70  
0.76  
0.82  
0.88  
0.95  
1.03  
1.11  
1.19  
1.29  
1.38  
1.49  
1.59  
1.71  
Bhp  
0.70  
0.75  
0.81  
0.87  
0.94  
1.00  
1.08  
1.16  
1.24  
1.33  
1.42  
1.52  
1.63  
1.74  
1.86  
Bhp  
0.81  
0.87  
0.93  
0.99  
1.06  
1.13  
1.21  
1.29  
1.37  
1.47  
1.56  
1.67  
1.78  
1.89  
2500  
2650  
2800  
2950  
3100  
3250  
3400  
3550  
3700  
3850  
4000  
4150  
4300  
4450  
4600  
594  
588  
582  
576  
597  
625  
654  
683  
712  
741  
770  
799  
828  
856  
885  
594  
600  
625  
650  
675  
700  
726  
752  
778  
805  
831  
858  
885  
912  
939  
662  
682  
704  
726  
748  
771  
794  
818  
842  
866  
890  
915  
940  
966  
991  
738  
757  
776  
795  
816  
836  
858  
879  
901  
924  
947  
970  
994  
1017  
1042  
988  
1001  
1016  
1030  
1046  
1062  
1078  
1095  
1113  
1131  
1150  
1168  
1188  
1207  
993  
1010  
1027  
1045  
1064  
1083  
1102  
1122  
1142  
1162  
1183  
958  
979  
1001  
1023  
1045  
1068  
1090  
50XCA08 (71/2 Tons) (cont)  
ESP (in. wg)  
1.10  
CFM  
0.80  
Rpm  
0.90  
1.00  
Bhp  
1.20  
Rpm Bhp  
1.30  
Rpm Bhp  
1.40  
Rpm Bhp  
Bhp  
0.93  
0.98  
1.05  
1.11  
1.18  
1.26  
1.34  
1.42  
1.51  
1.61  
1.71  
1.82  
1.93  
Rpm  
1094  
1105  
1117  
1131  
1144  
1159  
1174  
1189  
1206  
1222  
1239  
1257  
Bhp  
1.05  
1.11  
1.17  
1.24  
1.31  
1.39  
1.47  
1.56  
1.65  
1.75  
1.86  
1.97  
Rpm  
1144  
1154  
1166  
1178  
1191  
1205  
1219  
1234  
1249  
1265  
Rpm  
1192  
1201  
1212  
1223  
1236  
1249  
1263  
1277  
1292  
Bhp  
1.30  
1.36  
1.43  
1.50  
1.58  
1.67  
1.75  
1.85  
1.95  
2500  
2650  
2800  
2950  
3100  
3250  
3400  
3550  
3700  
3850  
4000  
4150  
4300  
4450  
4600  
1042  
1054  
1068  
1081  
1096  
1111  
1127  
1143  
1160  
1178  
1195  
1213  
1232  
1.17  
1.23  
1.30  
1.37  
1.44  
1.53  
1.61  
1.70  
1.80  
1.90  
1238  
1247  
1257  
1268  
1279  
1292  
1305  
1319  
1.43  
1.50  
1.57  
1.64  
1.72  
1.81  
1.90  
2.00  
1283  
1291  
1301  
1311  
1322  
1333  
1.57  
1.64  
1.71  
1.79  
1.87  
1.96  
1327  
1334  
1343  
1353  
1.72  
1.78  
1.86  
1.94  
LEGEND  
Bhp — Brake Horsepower  
ESP — External Static Pressure  
NOTES:  
3. Interpolation is permitted; extrapolation is not.  
4. Fan performance is based on filter, unit casing, and wet coil  
losses.  
1. Units are available with several motor hp options. Refer to the  
physical data table.  
2. Static pressure losses must be applied to external static pressure  
before entering the fan performance table.  
15  
Performance data (cont)  
CONDENSER FAN PERFORMANCE (cont)  
50XCA12 (10 Tons)  
ESP (in. wg)  
0.20 0.30  
Rpm Rpm  
CFM  
0.00  
0.00  
Rpm  
0.10  
Rpm  
0.40  
Rpm  
0.50  
Rpm  
846  
861  
875  
890  
905  
921  
936  
952  
0.60  
Rpm  
Rpm  
594  
588  
582  
601  
623  
646  
668  
690  
713  
735  
757  
779  
802  
824  
846  
Bhp  
0.86  
0.91  
0.95  
1.06  
1.18  
1.31  
1.45  
1.60  
1.76  
1.93  
2.11  
2.30  
2.51  
2.72  
2.95  
Bhp  
0.87  
0.97  
1.08  
1.20  
1.33  
1.46  
1.61  
1.76  
1.93  
2.11  
2.29  
2.49  
2.70  
2.92  
3.15  
Bhp  
1.00  
1.11  
1.23  
1.35  
1.48  
1.62  
1.77  
1.93  
2.10  
2.28  
2.47  
2.68  
2.89  
3.12  
3.35  
Bhp  
1.14  
1.25  
1.37  
1.50  
1.64  
1.78  
1.94  
2.10  
2.28  
2.46  
2.66  
2.87  
3.09  
3.32  
3.56  
Bhp  
1.29  
1.40  
1.53  
1.66  
1.80  
1.95  
2.11  
2.28  
2.46  
2.65  
2.85  
3.06  
3.29  
3.52  
3.77  
Bhp  
1.44  
1.56  
1.68  
1.82  
1.97  
2.12  
2.29  
2.46  
2.64  
2.84  
3.04  
3.26  
3.49  
3.73  
3.98  
Bhp  
1.59  
1.72  
1.85  
1.99  
2.14  
2.30  
2.47  
2.64  
2.83  
3.03  
3.24  
3.46  
3.70  
3.94  
4.20  
Bhp  
4800  
5000  
5200  
5400  
5600  
5800  
6000  
6200  
6400  
6600  
6800  
7000  
7200  
7400  
7600  
598  
618  
638  
658  
679  
699  
720  
740  
761  
782  
803  
824  
845  
866  
887  
655  
673  
692  
711  
729  
749  
768  
787  
807  
827  
846  
866  
887  
907  
927  
708  
725  
742  
759  
777  
795  
813  
832  
850  
869  
888  
907  
926  
945  
965  
757  
773  
789  
805  
822  
839  
856  
874  
891  
909  
927  
946  
964  
983  
1001  
803  
818  
833  
849  
865  
881  
897  
914  
931  
948  
965  
983  
1001  
1019  
1037  
915  
930  
944  
959  
974  
989  
1005  
1021  
1037  
1053  
1070  
1087  
1104  
2.02  
2.16  
2.32  
2.48  
2.65  
2.83  
3.03  
3.23  
3.44  
3.67  
3.91  
4.15  
4.42  
969  
985  
1002  
1019  
1036  
1053  
1071  
50XCA12 (10 Tons) (cont)  
ESP (in. wg)  
1.00  
CFM  
0.70  
Rpm  
0.80  
0.90  
Bhp  
1.10  
Rpm Bhp  
1.20  
Rpm Bhp  
1.30  
Rpm Bhp  
Bhp  
Rpm  
Bhp  
Rpm  
Rpm  
Bhp  
4800  
5000  
5200  
5400  
5600  
5800  
6000  
6200  
6400  
6600  
6800  
7000  
7200  
7400  
7600  
981  
996  
2.50  
2.67  
2.84  
3.03  
3.23  
3.43  
3.65  
3.88  
4.12  
4.37  
4.64  
1031  
1045  
1060  
1074  
1089  
1104  
1120  
1135  
1151  
1167  
2.86  
3.04  
3.23  
3.43  
3.64  
3.86  
4.09  
4.34  
4.60  
4.87  
1010  
1025  
1040  
1056  
1071  
1087  
1103  
1119  
1136  
1093  
1107  
1122  
1136  
1151  
1166  
1182  
1197  
3.43  
3.64  
3.85  
4.08  
4.31  
4.56  
4.82  
5.10  
1139  
1153  
1168  
1182  
1197  
1212  
1227  
3.85  
4.07  
4.30  
4.54  
4.79  
5.06  
5.33  
1198  
1212  
1226  
1241  
1256  
4.52  
4.77  
5.02  
5.29  
5.57  
1241  
1255  
1270  
1284  
5.00  
5.26  
5.53  
5.82  
1284  
1298  
1312  
5.50  
5.78  
6.06  
LEGEND  
Bhp — Brake Horsepower  
ESP — External Static Pressure  
NOTES:  
3. Interpolation is permitted; extrapolation is not.  
4. Fan performance is based on filter, unit casing, and wet coil  
losses.  
1. Units are available with several motor hp options. Refer to the  
physical data table.  
2. Static pressure losses must be applied to external static pressure  
before entering the fan performance table.  
16  
CONDENSER FAN PERFORMANCE (cont)  
50XCA14 (12 Tons)  
ESP (in. wg)  
CFM  
0.00  
0.10  
Rpm  
0.20  
Rpm  
0.30  
Rpm  
0.40  
Rpm  
0.50  
Rpm  
0.60  
Rpm  
0.70  
Rpm  
Rpm  
494  
488  
482  
476  
470  
464  
458  
452  
446  
458  
472  
486  
500  
514  
528  
Bhp  
1.50  
1.52  
1.53  
1.55  
1.56  
1.58  
1.59  
1.61  
1.62  
1.77  
1.93  
2.11  
2.29  
2.49  
2.70  
Bhp  
1.50  
1.52  
1.53  
1.55  
1.56  
1.58  
1.59  
1.66  
1.81  
1.97  
2.14  
2.33  
2.52  
2.72  
2.93  
Bhp  
1.50  
1.52  
1.53  
1.55  
1.56  
1.59  
1.73  
1.88  
2.04  
2.20  
2.38  
2.56  
2.76  
2.97  
3.19  
Bhp  
1.50  
1.52  
1.53  
1.56  
1.68  
1.82  
1.96  
2.12  
2.28  
2.45  
2.63  
2.82  
3.02  
3.23  
3.46  
Bhp  
1.50  
1.56  
1.67  
1.79  
1.93  
2.07  
2.21  
2.37  
2.54  
2.71  
2.90  
3.09  
3.30  
3.52  
3.74  
Bhp  
1.68  
1.80  
1.92  
2.05  
2.18  
2.33  
2.48  
2.64  
2.81  
2.99  
3.18  
3.38  
3.59  
3.81  
4.05  
Bhp  
1.93  
2.05  
2.17  
2.31  
2.45  
2.60  
2.76  
2.92  
3.10  
3.28  
3.48  
3.68  
3.90  
4.13  
4.36  
Bhp  
2.18  
2.30  
2.44  
2.58  
2.73  
2.88  
3.04  
3.22  
3.40  
3.59  
3.79  
4.00  
4.22  
4.45  
4.69  
6000  
6250  
6500  
6750  
7000  
7250  
7500  
7750  
8000  
8250  
8500  
8750  
9000  
9250  
9500  
494  
488  
482  
476  
470  
464  
458  
459  
472  
485  
498  
512  
525  
538  
551  
494  
488  
482  
476  
470  
466  
477  
489  
501  
513  
526  
538  
550  
563  
575  
494  
488  
482  
477  
488  
498  
509  
519  
530  
542  
553  
564  
576  
588  
600  
494  
494  
502  
511  
520  
530  
540  
549  
560  
570  
580  
591  
602  
613  
624  
521  
528  
536  
544  
552  
561  
570  
579  
588  
598  
608  
618  
628  
638  
649  
554  
561  
568  
576  
583  
591  
600  
608  
617  
626  
635  
644  
654  
663  
673  
586  
592  
599  
606  
613  
621  
628  
636  
644  
653  
661  
670  
679  
688  
697  
50XCA14 (12 Tons) (cont)  
ESP (in. wg)  
1.10  
CFM  
0.80  
Rpm  
0.90  
1.00  
Bhp  
1.20  
Rpm Bhp  
1.30  
Rpm Bhp  
1.40  
Rpm Bhp  
Bhp  
2.43  
2.57  
2.71  
2.86  
3.01  
3.17  
3.34  
3.52  
3.71  
3.90  
4.11  
4.32  
Rpm  
644  
650  
656  
663  
669  
676  
683  
690  
697  
705  
712  
720  
Bhp  
2.69  
2.84  
2.98  
3.14  
3.30  
3.47  
3.65  
3.83  
4.02  
4.22  
4.44  
4.66  
Rpm  
671  
677  
683  
689  
696  
702  
709  
715  
722  
730  
737  
744  
Rpm  
697  
703  
709  
715  
721  
727  
734  
740  
747  
754  
Bhp  
3.23  
3.39  
3.55  
3.72  
3.90  
4.08  
4.27  
4.47  
4.67  
4.89  
6000  
6250  
6500  
6750  
7000  
7250  
7500  
7750  
8000  
8250  
8500  
8750  
9000  
9250  
9500  
616  
622  
628  
635  
642  
649  
656  
663  
671  
679  
687  
695  
2.96  
3.11  
3.27  
3.43  
3.60  
3.77  
3.96  
4.15  
4.35  
4.55  
4.77  
5.00  
722  
728  
734  
739  
745  
752  
758  
764  
3.50  
3.67  
3.84  
4.02  
4.20  
4.39  
4.59  
4.80  
746  
751  
757  
763  
769  
775  
781  
3.78  
3.95  
4.13  
4.32  
4.51  
4.71  
4.91  
768  
774  
780  
786  
792  
4.06  
4.24  
4.43  
4.62  
4.82  
LEGEND  
Bhp — Brake Horsepower  
ESP — External Static Pressure  
NOTES:  
3. Interpolation is permitted; extrapolation is not.  
4. Fan performance is based on filter, unit casing, and wet coil  
losses.  
1. Units are available with several motor hp options. Refer to the  
physical data table.  
2. Static pressure losses must be applied to external static pressure  
before entering the fan performance table.  
17  
Performance data (cont)  
CONDENSER FAN PERFORMANCE (cont)  
50XCA16 (15 Tons)  
ESP (in. wg)  
0.30 0.40  
Rpm Rpm  
CFM  
0.00  
0.10  
Rpm  
0.20  
Rpm  
0.50  
Rpm  
0.60  
Rpm  
0.70  
Rpm  
Rpm  
494  
488  
482  
476  
470  
464  
458  
452  
458  
472  
486  
500  
514  
528  
542  
Bhp  
1.56  
1.57  
1.59  
1.61  
1.62  
1.64  
1.65  
1.67  
1.77  
1.93  
2.11  
2.29  
2.49  
2.70  
2.92  
Bhp  
1.56  
1.57  
1.59  
1.61  
1.62  
1.64  
1.66  
1.81  
1.97  
2.14  
2.33  
2.52  
2.72  
2.93  
3.16  
Bhp  
1.56  
1.57  
1.59  
1.61  
1.62  
1.73  
1.88  
2.04  
2.20  
2.38  
2.56  
2.76  
2.97  
3.19  
3.42  
Bhp  
1.56  
1.57  
1.59  
1.68  
1.82  
1.96  
2.12  
2.28  
2.45  
2.63  
2.82  
3.02  
3.23  
3.46  
3.69  
Bhp  
1.56  
1.67  
1.79  
1.93  
2.07  
2.21  
2.37  
2.54  
2.71  
2.90  
3.09  
3.30  
3.52  
3.74  
3.98  
Bhp  
1.80  
1.92  
2.05  
2.18  
2.33  
2.48  
2.64  
2.81  
2.99  
3.18  
3.38  
3.59  
3.81  
4.05  
4.29  
Bhp  
2.05  
2.17  
2.31  
2.45  
2.60  
2.76  
2.92  
3.10  
3.28  
3.48  
3.68  
3.90  
4.13  
4.36  
4.61  
Bhp  
2.30  
2.44  
2.58  
2.73  
2.88  
3.04  
3.22  
3.40  
3.59  
3.79  
4.00  
4.22  
4.45  
4.69  
4.94  
6250  
6500  
6750  
7000  
7250  
7500  
7750  
8000  
8250  
8500  
8750  
9000  
9250  
9500  
9750  
494  
488  
482  
476  
470  
464  
459  
472  
485  
498  
512  
525  
538  
551  
564  
494  
488  
482  
476  
470  
477  
489  
501  
513  
526  
538  
550  
563  
575  
588  
494  
488  
482  
488  
498  
509  
519  
530  
542  
553  
564  
576  
588  
600  
612  
494  
502  
511  
520  
530  
540  
549  
560  
570  
580  
591  
602  
613  
624  
635  
528  
536  
544  
552  
561  
570  
579  
588  
598  
608  
618  
628  
638  
649  
659  
561  
568  
576  
583  
591  
600  
608  
617  
626  
635  
644  
654  
663  
673  
683  
592  
599  
606  
613  
621  
628  
636  
644  
653  
661  
670  
679  
688  
697  
707  
50XCA16 (15 Tons) (cont)  
ESP (in. wg)  
1.10  
CFM  
0.80  
Rpm  
0.90  
1.00  
Bhp  
1.20  
Rpm Bhp  
1.30  
Rpm Bhp  
1.40  
Rpm Bhp  
Bhp  
2.57  
2.71  
2.86  
3.01  
3.17  
3.34  
3.52  
3.71  
3.90  
4.11  
4.32  
4.55  
4.78  
Rpm  
650  
656  
663  
669  
676  
683  
690  
697  
705  
712  
720  
728  
Bhp  
2.84  
2.98  
3.14  
3.30  
3.47  
3.65  
3.83  
4.02  
4.22  
4.44  
4.66  
4.89  
Rpm  
677  
683  
689  
696  
702  
709  
715  
722  
730  
737  
744  
Rpm  
703  
709  
715  
721  
727  
734  
740  
747  
754  
Bhp  
3.39  
3.55  
3.72  
3.90  
4.08  
4.27  
4.47  
4.67  
4.89  
6250  
6500  
6750  
7000  
7250  
7500  
7750  
8000  
8250  
8500  
8750  
9000  
9250  
9500  
9750  
622  
628  
635  
642  
649  
656  
663  
671  
679  
687  
695  
704  
712  
3.11  
3.27  
3.43  
3.60  
3.77  
3.96  
4.15  
4.35  
4.55  
4.77  
5.00  
728  
734  
739  
745  
752  
758  
764  
3.67  
3.84  
4.02  
4.20  
4.39  
4.59  
4.80  
751  
757  
763  
769  
775  
781  
3.95  
4.13  
4.32  
4.51  
4.71  
4.91  
774  
780  
786  
792  
4.24  
4.43  
4.62  
4.82  
LEGEND  
Bhp — Brake Horsepower  
ESP — External Static Pressure  
NOTES:  
3. Interpolation is permitted; extrapolation is not.  
4. Fan performance is based on filter, unit casing, and wet coil  
losses.  
1. Units are available with several motor hp options. Refer to the  
physical data table.  
2. Static pressure losses must be applied to external static pressure  
before entering the fan performance table.  
18  
CONDENSER FAN PERFORMANCE (cont)  
50XCA24 (20 Tons)  
ESP (in. wg)  
CFM  
0.00  
0.10  
Rpm  
0.20  
Rpm  
0.30  
Rpm  
0.40  
Rpm  
0.50  
Rpm  
0.60  
Rpm  
837  
852  
867  
882  
898  
914  
930  
946  
962  
979  
995  
1012  
1029  
1046  
1063  
0.70  
Rpm  
870  
885  
900  
915  
930  
945  
961  
976  
Rpm  
594  
606  
626  
647  
668  
688  
709  
730  
750  
771  
792  
812  
833  
854  
874  
Bhp  
1.60  
1.72  
1.90  
2.09  
2.30  
2.52  
2.75  
3.00  
3.26  
3.54  
3.83  
4.14  
4.46  
4.80  
5.16  
Bhp  
1.84  
2.02  
2.22  
2.42  
2.64  
2.87  
3.11  
3.37  
3.64  
3.93  
4.23  
4.55  
4.88  
5.24  
5.60  
Bhp  
2.14  
2.33  
2.54  
2.75  
2.98  
3.22  
3.47  
3.74  
4.02  
4.32  
4.64  
4.96  
5.31  
5.67  
6.05  
Bhp  
2.44  
2.64  
2.85  
3.08  
3.32  
3.57  
3.83  
4.11  
4.41  
4.71  
5.04  
5.38  
5.73  
6.10  
6.49  
Bhp  
2.74  
2.95  
3.18  
3.41  
3.66  
3.92  
4.20  
4.49  
4.79  
5.11  
5.44  
5.79  
6.16  
6.54  
6.94  
Bhp  
3.04  
3.27  
3.50  
3.74  
4.00  
4.27  
4.56  
4.86  
5.17  
5.50  
5.85  
6.21  
6.58  
6.97  
7.38  
Bhp  
3.35  
3.58  
3.82  
4.08  
4.35  
4.63  
4.92  
5.23  
5.56  
5.90  
6.25  
6.62  
7.01  
7.41  
7.83  
Bhp  
3.66  
3.90  
4.15  
4.41  
4.69  
4.99  
5.29  
5.61  
5.95  
6.29  
6.66  
7.04  
7.43  
7.85  
8.28  
8,500  
8,800  
9,100  
9,400  
9,700  
10,000  
10,300  
10,600  
10,900  
11,200  
11,500  
11,800  
12,100  
12,400  
12,700  
636  
655  
674  
693  
713  
732  
752  
771  
791  
810  
830  
850  
869  
889  
909  
682  
700  
718  
736  
754  
773  
791  
810  
829  
847  
866  
885  
904  
923  
942  
724  
741  
758  
776  
793  
811  
829  
846  
864  
882  
901  
919  
937  
956  
974  
764  
780  
797  
813  
830  
847  
864  
881  
898  
916  
933  
951  
969  
987  
1005  
801  
817  
833  
849  
865  
881  
898  
914  
931  
948  
965  
982  
999  
1017  
1034  
992  
1008  
1024  
1041  
1057  
1074  
1090  
50XCA24 (20 Tons) (cont)  
ESP (in. wg)  
1.10  
CFM  
0.80  
Rpm  
902  
917  
931  
946  
960  
975  
990  
1006  
1021  
1037  
1053  
1069  
1085  
1101  
1117  
0.90  
1.00  
Bhp  
1.20  
Rpm Bhp  
1.30  
Rpm Bhp  
1.40  
Rpm Bhp  
Bhp  
3.97  
4.22  
4.48  
4.75  
5.04  
5.34  
5.66  
5.99  
6.33  
6.69  
7.07  
7.46  
7.86  
8.29  
8.73  
Rpm  
933  
Bhp  
4.28  
4.54  
4.81  
5.09  
5.39  
5.70  
6.03  
6.37  
6.72  
7.09  
7.48  
7.88  
8.29  
8.73  
9.18  
Rpm  
963  
Rpm  
992  
Bhp  
4.91  
5.19  
5.48  
5.78  
6.10  
6.43  
6.77  
7.13  
7.51  
7.90  
8.30  
8.72  
9.16  
9.61  
8,500  
8,800  
9,100  
9,400  
9,700  
10,000  
10,300  
10,600  
10,900  
11,200  
11,500  
11,800  
12,100  
12,400  
12,700  
4.59  
4.86  
5.14  
5.44  
5.74  
6.07  
6.40  
6.75  
7.11  
7.49  
7.89  
8.30  
8.73  
9.17  
9.63  
1020  
1032  
1046  
1059  
1072  
1086  
1100  
1114  
1128  
1143  
1157  
1172  
1187  
5.22  
5.51  
5.81  
6.13  
6.45  
6.80  
7.15  
7.52  
7.90  
8.30  
8.71  
9.15  
9.59  
1046  
1059  
1072  
1085  
1098  
1112  
1126  
1139  
1153  
1168  
1182  
1196  
5.54  
5.84  
6.15  
6.48  
6.81  
7.16  
7.53  
7.91  
8.30  
8.71  
9.13  
9.57  
1073  
1085  
1098  
1111  
1124  
1137  
1150  
1164  
1178  
1192  
1206  
5.87  
6.17  
6.49  
6.83  
7.17  
7.53  
7.91  
8.29  
8.70  
9.11  
9.55  
947  
961  
976  
990  
1005  
1018  
1032  
1046  
1060  
1074  
1088  
1103  
1117  
1132  
1147  
1162  
1178  
975  
990  
1004  
1018  
1032  
1047  
1062  
1076  
1091  
1106  
1122  
1137  
1153  
1169  
1004  
1019  
1034  
1049  
1064  
1080  
1096  
1111  
1127  
1143  
1220 10.00  
LEGEND  
Bhp — Brake Horsepower  
ESP — External Static Pressure  
NOTES:  
3. Interpolation is permitted; extrapolation is not.  
4. Fan performance is based on filter, unit casing, and wet coil  
losses.  
1. Units are available with several motor hp options. Refer to the  
physical data table.  
2. Static pressure losses must be applied to external static pressure  
before entering the fan performance table.  
19  
Performance data (cont)  
EVAPORATOR FAN PERFORMANCE  
50XCA06 (5 Tons)  
ESP (in. wg)  
0.40 0.50  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
CFM  
0.00  
0.10  
0.20  
0.30  
0.60  
0.70  
0.80  
0.90  
1500  
1600  
1700  
1800  
1900  
2000  
2100  
2200  
2300  
2400  
2500  
594 0.23 594 0.23 594 0.23 612 0.24 670 0.29 727 0.34 785 0.40 842 0.46  
588 0.24 588 0.24 588 0.24 630 0.28 684 0.32 738 0.37 793 0.43 847 0.49  
582 0.26 582 0.26 596 0.27 650 0.31 701 0.36 752 0.41 803 0.47 854 0.53  
576 0.28 576 0.28 618 0.31 670 0.36 719 0.40 767 0.45 815 0.51 863 0.57  
570 0.29 586 0.31 641 0.35 691 0.40 738 0.45 784 0.50 829 0.56 875 0.62  
564 0.31 612 0.35 664 0.40 712 0.45 757 0.50 801 0.56 845 0.61 888 0.67  
593 0.36 637 0.40 687 0.46 734 0.51 778 0.56 820 0.61 862 0.67 903 0.73  
621 0.42 663 0.46 710 0.51 756 0.57 799 0.62 840 0.68 879 0.74 919 0.80  
649 0.48 689 0.52 734 0.58 779 0.63 820 0.69 860 0.75 898 0.81 936 0.87  
677 0.54 715 0.59 759 0.64 801 0.70 842 0.76 880 0.82 918 0.88 954 0.95  
897 0.53 950 0.60  
900 0.56 952 0.64  
905 0.60 955 0.67  
911 0.64 959 0.71  
920 0.69 966 0.76  
931 0.74 975 0.81  
944 0.80 985 0.87  
958 0.86 997 0.93  
974 0.93 1011 1.00  
990 1.01 1026 1.08  
705 0.61 742 0.66 783 0.72 824 0.78 864 0.84 902 0.90 938 0.97 973 1.03 1008 1.10 1043 1.17  
50XCA06 (5 Tons) (cont)  
ESP (in. wg)  
1.40 1.50  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
CFM  
1.00  
1.10  
1.20  
1.30  
1.60  
1.70  
1.80  
1.90  
1500 1000 0.68 1047 0.76 1092 0.84 1134 0.93 1174 1.01 1213 1.10 1249 1.19 1284 1.28 1318 1.36 1351 1.46  
1600 1001 0.71 1049 0.80 1094 0.88 1137 0.97 1178 1.06 1218 1.14 1255 1.24 1291 1.33 1326 1.42 1359 1.52  
1700 1004 0.75 1051 0.83 1096 0.92 1139 1.01 1181 1.10 1221 1.19 1259 1.28 1296 1.38 1331 1.48 1365 1.57  
1800 1007 0.79 1053 0.87 1098 0.96 1141 1.05 1183 1.14 1223 1.24 1262 1.33 1300 1.43  
1900 1011 0.83 1056 0.92 1100 1.00 1143 1.09 1185 1.19 1225 1.28 1264 1.38 1302 1.48  
2000 1018 0.89 1061 0.97 1104 1.05 1146 1.14 1187 1.24 1227 1.33 1266 1.43  
2100 1026 0.94 1068 1.02 1109 1.11 1150 1.20 1190 1.29 1230 1.39 1268 1.49  
2200 1037 1.01 1076 1.09 1116 1.17 1155 1.26 1194 1.35 1233 1.45  
2300 1049 1.08 1087 1.16 1124 1.24 1162 1.33 1200 1.42  
2400 1062 1.16 1098 1.23 1135 1.32 1171 1.40 1207 1.49  
2500 1077 1.24 1112 1.32 1147 1.40 1181 1.48 1216 1.57  
LEGEND  
Bhp — Brake Horsepower  
ESP — External Static Pressure  
NOTES:  
3. Interpolation is permitted; extrapolation is not.  
4. Fan performance is based on filter, unit casing, and wet coil  
losses.  
1. Units are available with several motor hp options. Refer to the  
physical data table.  
2. Static pressure losses must be applied to external static pressure  
before entering the fan performance table.  
20  
EVAPORATOR FAN PERFORMANCE (cont)  
50XCA08 (71/2 Tons)  
ESP (in. wg)  
CFM  
0.00  
0.10  
0.20  
0.30  
0.40  
0.50  
0.60  
0.70  
0.80  
0.90  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
2200  
2400  
2600  
2800  
3000  
3200  
3400  
3600  
3800  
594 0.26 594 0.26 594 0.26 644 0.31 707 0.38 766 0.45 820 0.53  
588 0.28 588 0.28 602 0.29 667 0.36 728 0.43 785 0.51 838 0.59  
582 0.29 582 0.29 630 0.34 692 0.42 750 0.49 805 0.58 857 0.66  
576 0.31 597 0.33 659 0.41 718 0.48 774 0.56 827 0.65 877 0.74  
570 0.33 631 0.40 690 0.48 746 0.55 799 0.64 850 0.73 898 0.82  
606 0.40 665 0.48 721 0.55 774 0.64 825 0.73 874 0.82 921 0.91  
644 0.48 699 0.56 752 0.64 803 0.73 852 0.82 899 0.92 944 1.02  
871 0.62  
888 0.68  
906 0.75  
925 0.83  
945 0.92  
918 0.70  
935 0.77  
952 0.84  
970 0.93 1013 1.03  
989 1.02 1032 1.12  
963 0.79  
979 0.86  
996 0.94  
966 1.01 1009 1.12 1051 1.22  
988 1.12 1030 1.23 1071 1.34  
681 0.57 734 0.66 785 0.74 833 0.83 880 0.93 925 1.03 969 1.13 1011 1.24 1052 1.35 1092 1.46  
719 0.67 770 0.76 818 0.85 864 0.95 909 1.04 952 1.15 995 1.25 1035 1.36 1075 1.48 1114 1.59  
50XCA08 (71/2 Tons) (cont)  
ESP (in. wg)  
1.40 1.50  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
2200 1006 0.88 1046 0.97 1085 1.07 1122 1.17 1158 1.27 1193 1.37 1226 1.47 1258 1.58  
CFM  
1.00  
1.10  
1.20  
1.30  
1.60  
1.70  
1.80  
1.90  
2400 1022 0.96 1062 1.05 1101 1.15 1138 1.26 1174 1.36 1209 1.46 1242 1.57 1274 1.68 1306 1.79 1336 1.90  
2600 1038 1.04 1078 1.14 1117 1.24 1154 1.35 1190 1.46 1224 1.57 1258 1.68 1290 1.79 1322 1.91 1352 2.03  
2800 1055 1.13 1095 1.23 1133 1.34 1170 1.45 1206 1.56 1240 1.68 1274 1.79 1306 1.91 1337 2.03 1368 2.15  
3000 1073 1.23 1112 1.34 1150 1.45 1187 1.56 1222 1.68 1256 1.79 1290 1.91 1322 2.04 1353 2.16 1384 2.29  
3200 1091 1.33 1130 1.45 1167 1.56 1203 1.68 1239 1.80 1273 1.92 1306 2.04 1338 2.17 1369 2.30 1400 2.43  
3400 1110 1.45 1148 1.57 1185 1.68 1221 1.81 1256 1.93 1290 2.05 1322 2.18 1354 2.31 1385 2.44 1416 2.58  
3600 1130 1.58 1168 1.69 1204 1.82 1239 1.94 1274 2.07 1307 2.20 1340 2.33 1371 2.46 1402 2.60 1432 2.74  
3800 1152 1.71 1188 1.84 1224 1.96 1258 2.09 1292 2.22 1325 2.35 1357 2.49 1389 2.62 1419 2.76 1449 2.90  
50XCA08 (71/2 Tons) (cont)  
ESP (in. wg)  
CFM  
2.00  
2.10  
2.20  
2.30  
2.40  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
2200  
2400 1366 2.02 1395 2.13  
2600 1382 2.14 1411 2.26 1439 2.39 1467 2.51 1494 2.63  
2800 1398 2.27 1427 2.40 1455 2.52 1483 2.65 1510 2.78  
3000 1414 2.41 1443 2.54 1471 2.67 1499 2.80 1526 2.94  
3200 1429 2.56 1459 2.69 1487 2.82 1515 2.96  
3400 1445 2.71 1474 2.85 1503 2.99  
3600 1462 2.87  
3800  
LEGEND  
Bhp — Brake Horsepower  
ESP — External Static Pressure  
NOTES:  
3. Interpolation is permitted; extrapolation is not.  
4. Fan performance is based on filter, unit casing, and wet coil  
losses.  
1. Units are available with several motor hp options. Refer to the  
physical data table.  
2. Static pressure losses must be applied to external static pressure  
before entering the fan performance table.  
21  
Performance data (cont)  
EVAPORATOR FAN PERFORMANCE (cont)  
50XCA012 (10 Tons)  
ESP (in. wg)  
0.30 0.40  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
CFM  
0.00  
0.00  
0.10  
0.20  
0.50  
0.60  
0.70  
0.80  
3000  
3200  
3400  
3600  
3800  
4000  
4200  
4400  
4600  
4800  
5000  
594 0.50 594 0.50 594 0.50 637 0.56 686 0.64 733 0.71 776 0.79 818 0.86  
858 0.94  
874 1.05  
891 1.17  
909 1.30 944 1.39  
927 1.44  
896 1.02  
911 1.13  
928 1.26  
588 0.54 588 0.54 608 0.57 659 0.65 707 0.73 752 0.81 794 0.89  
582 0.58 582 0.58 633 0.66 682 0.74 728 0.83 772 0.91 813 1.00  
576 0.62 608 0.67 658 0.76 705 0.85 750 0.94 792 1.03 833 1.12  
584 0.68 636 0.78 684 0.87 730 0.97 773 1.06 814 1.16 853 1.25  
615 0.80 664 0.90 711 1.00 754 1.10 796 1.20 836 1.29 874 1.39  
646 0.92 693 1.03 737 1.13 779 1.24 820 1.34 858 1.45 896 1.55  
677 1.06 721 1.17 764 1.28 805 1.39 844 1.50 882 1.61 918 1.72  
707 1.21 750 1.33 791 1.44 831 1.56 869 1.67 905 1.78 940 1.90  
738 1.38 779 1.50 819 1.62 857 1.74 894 1.86 929 1.97 963 2.09  
835 0.97  
853 1.08  
872 1.21  
891 1.35  
911 1.49 946 1.59  
931 1.65  
953 1.83  
962 1.54  
980 1.69  
999 1.86  
966 1.76  
986 1.94 1019 2.05  
974 2.01 1007 2.13 1039 2.24  
996 2.21 1029 2.33 1060 2.45  
769 1.56 809 1.68 847 1.81 884 1.93 919 2.06 954 2.18 987 2.30 1019 2.43 1051 2.55 1081 2.68  
50XCA12 (10 Tons) (cont)  
ESP (in. wg)  
1.30 1.40  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
CFM  
0.90  
1.00  
1.10  
1.20  
1.50  
1.60  
1.70  
1.80  
3000  
3200  
3400  
3600  
3800  
947 1.21  
963 1.34  
997 1.43 1030 1.52  
979 1.48 1013 1.57 1045 1.67 1077 1.76  
996 1.63 1029 1.73 1061 1.83 1092 1.92 1122 2.02 1152 2.12  
4000 1014 1.80 1046 1.90 1077 2.00 1108 2.10 1137 2.20 1166 2.31 1195 2.41 1223 2.51  
4200 1032 1.97 1063 2.08 1094 2.18 1124 2.29 1153 2.40 1182 2.50 1210 2.61 1237 2.72 1264 2.83  
4400 1051 2.16 1082 2.27 1112 2.38 1141 2.49 1170 2.60 1198 2.71 1226 2.83 1253 2.94 1279 3.05 1305 3.17  
4600 1070 2.36 1101 2.47 1130 2.59 1159 2.70 1188 2.82 1215 2.94 1242 3.05 1269 3.17 1295 3.29 1320 3.41  
4800 1090 2.57 1120 2.69 1149 2.81 1178 2.93 1205 3.05 1233 3.18 1259 3.30 1285 3.42 1311 3.54 1336 3.66  
5000 1111 2.80 1140 2.93 1169 3.05 1196 3.18 1224 3.30 1251 3.43 1277 3.55 1302 3.68 1328 3.81 1353 3.94  
LEGEND  
Bhp — Brake Horsepower  
ESP — External Static Pressure  
NOTES:  
3. Interpolation is permitted; extrapolation is not.  
4. Fan performance is based on filter, unit casing, and wet coil  
losses.  
1. Units are available with several motor hp options. Refer to the  
physical data table.  
2. Static pressure losses must be applied to external static pressure  
before entering the fan performance table.  
22  
EVAPORATOR FAN PERFORMANCE (cont)  
50XCA14 (12 Tons)  
ESP (in. wg)  
CFM  
0.00  
0.10  
0.20  
0.30  
0.40  
0.50  
0.60  
0.70  
0.80  
0.90  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
3500  
3700  
3900  
4100  
4300  
4500  
4700  
4900  
5100  
5300  
5500  
5700  
5900  
6100  
594 0.62 594 0.62  
588 0.66 622 0.72  
600 0.74 650 0.84  
630 0.86 678 0.96 724 1.06 767 1.16  
661 0.99 707 1.10  
692 1.14 736 1.25  
645 0.71 694 0.80  
671 0.82 718 0.91  
697 0.93 742 1.03  
739 0.88  
761 1.00  
784 1.13  
808 1.27  
832 1.42  
856 1.58  
881 1.76  
906 1.95  
782 0.97  
803 1.09  
825 1.22  
847 1.37  
870 1.53  
893 1.69  
917 1.88  
941 2.08  
966 2.29  
823 1.06  
843 1.18  
863 1.32  
885 1.47  
907 1.63  
929 1.81  
952 1.99  
862 1.15  
881 1.28  
901 1.42  
921 1.57  
942 1.74  
963 1.92  
900 1.23  
918 1.37  
937 1.52  
956 1.68  
976 1.85 1009 1.95  
997 2.03 1029 2.14  
936 1.32  
953 1.46  
971 1.61  
990 1.78  
751 1.20 792 1.31  
778 1.36 818 1.47  
723 1.29 765 1.41 805 1.53 844 1.64  
985 2.11 1018 2.23 1049 2.35  
753 1.47 794 1.59  
784 1.65 823 1.78  
815 1.86 853 1.99  
846 2.07 882 2.21  
876 2.31 911 2.45  
907 2.56 941 2.71  
833 1.71 870 1.83  
861 1.91 897 2.03 932 2.16  
889 2.12 924 2.25  
917 2.35 951 2.48  
945 2.59 978 2.73 1011 2.88 1042 3.02 1072 3.16 1102 3.30 1131 3.44 1159 3.58  
974 2.85 1006 3.00 1037 3.15 1068 3.29 1097 3.44 1126 3.59 1155 3.73 1182 3.88  
975 2.20 1008 2.32 1040 2.44 1070 2.56  
999 2.41 1031 2.54 1062 2.67 1092 2.79  
958 2.38  
991 2.51 1023 2.65 1054 2.78 1084 2.91 1114 3.04  
984 2.62 1016 2.76 1047 2.89 1078 3.03 1107 3.17 1136 3.30  
938 2.83 971 2.98 1003 3.13 1034 3.28 1064 3.44 1094 3.59 1123 3.74 1151 3.89 1179 4.04 1206 4.19  
50XCA14 (12 tons) (cont)  
ESP (in. wg)  
1.40 1.50  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
CFM  
1.00  
1.10  
1.20  
1.30  
1.60  
1.70  
1.80  
1.90  
3500  
3700  
971 1.41 1005 1.50 1037 1.59  
987 1.56 1021 1.65 1053 1.75 1084 1.84 1115 1.94  
3900 1005 1.71 1037 1.81 1069 1.91 1100 2.01 1130 2.11 1159 2.21 1187 2.31  
4100 1023 1.88 1055 1.98 1086 2.09 1116 2.19 1145 2.30 1174 2.40 1202 2.51 1230 2.62  
4300 1041 2.06 1073 2.17 1103 2.28 1133 2.39 1162 2.50 1190 2.61 1218 2.72 1245 2.83 1272 2.94 1298 3.05  
4500 1060 2.26 1091 2.37 1121 2.48 1150 2.60 1179 2.71 1207 2.82 1234 2.94 1261 3.05 1287 3.17 1313 3.29  
4700 1080 2.46 1110 2.58 1140 2.70 1168 2.82 1196 2.94 1224 3.06 1251 3.17 1277 3.29 1303 3.41 1328 3.53  
4900 1101 2.68 1130 2.81 1159 2.93 1187 3.05 1215 3.18 1241 3.30 1268 3.42 1294 3.55 1319 3.67 1344 3.80  
5100 1121 2.92 1150 3.05 1179 3.18 1206 3.30 1233 3.43 1260 3.56 1286 3.69 1311 3.82 1336 3.95 1361 4.08  
5300 1143 3.17 1171 3.30 1199 3.44 1226 3.57 1253 3.70 1278 3.84 1304 3.97 1329 4.10 1354 4.24 1378 4.37  
5500 1165 3.44 1192 3.58 1219 3.71 1246 3.85 1272 3.99 1298 4.13 1323 4.26 1348 4.40 1372 4.54 1396 4.68  
5700 1187 3.72 1214 3.87 1241 4.01 1267 4.15 1292 4.29 1318 4.44 1342 4.58 1367 4.72 1390 4.86  
5900 1209 4.03 1236 4.17 1262 4.32 1288 4.47 1313 4.61 1338 4.76 1362 4.91  
6100 1232 4.34 1258 4.50 1284 4.65 1309 4.80 1334 4.95  
LEGEND  
Bhp — Brake Horsepower  
ESP — External Static Pressure  
NOTES:  
3. Interpolation is permitted; extrapolation is not.  
4. Fan performance is based on filter, unit casing, and wet coil  
losses.  
1. Units are available with several motor hp options. Refer to the  
physical data table.  
2. Static pressure losses must be applied to external static pressure  
before entering the fan performance table.  
23  
Performance data (cont)  
EVAPORATOR FAN PERFORMANCE (cont)  
50XCA16 (15 Tons)  
ESP (in. wg)  
0.40 0.50  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
CFM  
0.00  
0.10  
0.20  
0.30  
0.60  
0.70  
0.80  
0.90  
4500  
4750  
5000  
5250  
5500  
5750  
6000  
6250  
6500  
6750  
7000  
7250  
7500  
594 0.50 594 0.50 603 0.51 656 0.59 706 0.67 753 0.75 798 0.82  
588 0.53 588 0.53 624 0.58 676 0.67 724 0.75 770 0.83 813 0.91  
582 0.56 592 0.58 646 0.66 696 0.75 743 0.83 787 0.92 830 1.01  
576 0.59 616 0.66 668 0.75 716 0.84 762 0.93 805 1.02 847 1.11  
587 0.65 641 0.75 690 0.84 737 0.94 782 1.03 824 1.13 864 1.22  
614 0.75 665 0.85 713 0.94 759 1.04 802 1.14 843 1.24 882 1.34  
641 0.85 690 0.95 736 1.05 780 1.16 822 1.26 862 1.36 901 1.47  
667 0.96 715 1.07 760 1.17 802 1.28 843 1.39 882 1.49 920 1.60  
694 1.08 740 1.19 783 1.30 824 1.41 864 1.52 902 1.64 939 1.75  
721 1.21 765 1.32 807 1.44 847 1.56 885 1.67 923 1.79 958 1.90  
840 0.90  
855 1.00  
870 1.10  
886 1.20  
903 1.32  
920 1.44  
938 1.57  
956 1.71  
880 0.98  
894 1.08  
909 1.18  
924 1.29  
940 1.41  
957 1.54  
933 1.16  
947 1.27  
961 1.39  
976 1.51  
992 1.64  
974 1.67 1008 1.78  
991 1.82 1025 1.93  
974 1.86 1009 1.97 1042 2.08  
993 2.02 1027 2.13 1059 2.25  
747 1.35 790 1.47 831 1.59 870 1.71 907 1.83 943 1.95 978 2.07 1012 2.19 1045 2.31 1077 2.43  
774 1.50 815 1.62 855 1.75 893 1.87 929 1.99 965 2.12 999 2.24 1032 2.37 1064 2.49 1096 2.62  
801 1.66 841 1.79 879 1.92 916 2.04 951 2.17 986 2.30 1019 2.43 1052 2.56 1084 2.69 1114 2.82  
50XCA16 (15 Tons) (cont)  
ESP (in. wg)  
1.40 1.50  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
CFM  
1.00  
1.10  
1.20  
1.30  
1.60  
1.70  
1.80  
1.90  
4500  
4750  
5000  
5250  
983 1.36  
997 1.48 1031 1.57 1064 1.67  
5500 1011 1.61 1045 1.70 1078 1.80 1109 1.90  
5750 1026 1.74 1059 1.84 1092 1.94 1123 2.05 1154 2.15  
6000 1042 1.88 1074 1.99 1106 2.10 1137 2.20 1167 2.31 1197 2.42 1226 2.53  
6250 1058 2.04 1090 2.15 1121 2.26 1152 2.37 1181 2.48 1210 2.59 1239 2.70 1267 2.81  
6500 1074 2.20 1106 2.31 1136 2.43 1166 2.54 1196 2.65 1225 2.77 1253 2.89 1280 3.00 1307 3.12  
6750 1091 2.37 1122 2.49 1152 2.60 1182 2.72 1211 2.84 1239 2.96 1267 3.08 1294 3.20 1321 3.32 1347 3.44  
7000 1109 2.55 1139 2.67 1169 2.79 1198 2.92 1226 3.04 1254 3.16 1281 3.29 1308 3.41 1335 3.54 1360 3.66  
7250 1126 2.74 1156 2.87 1186 2.99 1214 3.12 1242 3.25 1270 3.37 1297 3.50 1323 3.63 1349 3.76 1374 3.89  
7500 1145 2.94 1174 3.07 1203 3.20 1231 3.33 1258 3.47 1286 3.60 1312 3.73 1338 3.86 1364 3.99 1389 4.13  
LEGEND  
Bhp — Brake Horsepower  
ESP — External Static Pressure  
NOTES:  
3. Interpolation is permitted; extrapolation is not.  
4. Fan performance is based on filter, unit casing, and wet coil  
losses.  
1. Units are available with several motor hp options. Refer to the  
physical data table.  
2. Static pressure losses must be applied to external static pressure  
before entering the fan performance table.  
24  
EVAPORATOR FAN PERFORMANCE (cont)  
50XCA24 (20 Tons)  
CFM  
ESP (in. wg)  
0.00  
0.10  
0.20  
0.30  
0.40  
0.50  
0.60  
0.70  
0.80  
0.90  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
6,000 594 1.01 594 1.01 645 1.17 693 1.34 737 1.52  
6,300 588 1.07 612 1.14 667 1.32 714 1.50 757 1.68  
6,600 588 1.14 636 1.29 689 1.48 735 1.67 777 1.86  
6,900 615 1.30 660 1.45 711 1.65 757 1.85 798 2.05  
7,200 642 1.48 684 1.63 734 1.84 779 2.05 819 2.25  
7,500 668 1.68 708 1.83 756 2.04 801 2.26 840 2.47  
7,800 695 1.88 733 2.04 779 2.26 823 2.49 862 2.71  
8,000 713 2.03 750 2.19 795 2.41 838 2.65 876 2.88  
8,300 740 2.27 774 2.43 818 2.66 860 2.90 898 3.14  
8,600 766 2.53 800 2.69 841 2.92 882 3.17 920 3.42  
8,900 793 2.80 825 2.97 865 3.20 905 3.46 942 3.72  
9,200 820 3.09 850 3.27 888 3.50 928 3.77 964 4.04  
781 1.70  
799 1.87  
817 2.05  
837 2.25  
857 2.46  
877 2.69  
898 2.93  
912 3.10  
934 3.38  
955 3.67  
825 1.90  
840 2.07 883 2.28  
870 2.12  
917 2.36  
926 2.52  
965 2.62  
971 2.77  
979 2.95  
990 3.15  
857 2.25  
875 2.45  
894 2.67  
913 2.91  
933 3.16  
946 3.33  
967 3.61  
897 2.47 938 2.70  
913 2.67  
930 2.89  
948 3.13  
967 3.39 1000 3.63 1034 3.87  
979 3.57 1012 3.81 1045 4.06  
999 3.85 1031 4.10 1062 4.35  
951 2.90  
966 3.13 1003 3.37  
983 3.37 1018 3.61  
988 3.91 1019 4.16 1050 4.41 1081 4.67  
977 3.97 1009 4.23 1040 4.48 1070 4.74 1100 5.00  
998 4.30 1030 4.56 1061 4.82 1090 5.09 1119 5.36  
9,500 846 3.40 876 3.58 912 3.82 950 4.09 987 4.37 1020 4.64 1052 4.92 1082 5.19 1111 5.46 1139 5.73  
9,800 873 3.74 901 3.92 936 4.16 973 4.44 1009 4.72 1042 5.01 1074 5.29 1103 5.57 1131 5.85 1159 6.13  
10,000 891 3.97 918 4.16 952 4.40 989 4.68 1024 4.97 1057 5.26 1088 5.55 1117 5.83 1145 6.12 1173 6.40  
50XCA24 (20 Tons) (cont)  
ESP (in. wg)  
CFM  
1.00  
1.10  
1.20  
1.30  
1.40  
1.50  
1.60  
1.70  
1.80  
1.90  
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp  
6,000 1014 2.90 1063 3.20 1112 3.53 1161 3.87 1208 4.23  
6,300 1016 3.05 1063 3.35 1110 3.66 1157 4.00 1204 4.36 1249 4.73  
6,600 1022 3.22 1066 3.51 1110 3.83 1155 4.16 1200 4.50 1245 4.87 1289 5.25 1332 5.65  
6,900 1030 3.42 1071 3.70 1113 4.01 1156 4.33 1199 4.67 1242 5.03 1285 5.41 1327 5.80 1369 6.21 1409 6.63  
7,200 1041 3.64 1080 3.92 1119 4.22 1159 4.53 1200 4.87 1241 5.22 1282 5.59 1323 5.98 1364 6.38 1404 6.80  
7,500 1053 3.88 1090 4.15 1127 4.45 1165 4.76 1203 5.09 1242 5.43 1282 5.80 1321 6.18 1361 6.58 1400 6.99  
7,800 1067 4.14 1102 4.41 1137 4.70 1173 5.01 1209 5.33 1246 5.67 1284 6.03 1321 6.40 1360 6.80 1397 7.20  
8,000 1078 4.32 1111 4.60 1145 4.88 1179 5.19 1214 5.51 1250 5.85 1286 6.20 1323 6.57 1360 6.96 1397 7.36  
8,300 1094 4.62 1126 4.89 1158 5.18 1191 5.48 1224 5.80 1258 6.13 1292 6.48 1327 6.84 1362 7.22 1397 7.62  
8,600 1111 4.93 1141 5.21 1172 5.50 1203 5.80 1235 6.11 1267 6.44 1300 6.78 1333 7.14 1366 7.51 1400 7.90  
8,900 1129 5.27 1158 5.55 1188 5.84 1218 6.14 1248 6.45 1278 6.77 1309 7.11 1341 7.47 1372 7.83 1405 8.22  
9,200 1147 5.63 1176 5.91 1204 6.20 1233 6.50 1262 6.81 1291 7.14 1320 7.47 1350 7.82 1381 8.19 1411 8.56  
9,500 1167 6.01 1194 6.30 1222 6.59 1249 6.89 1277 7.20 1305 7.53 1333 7.86 1362 8.21 1391 8.57 1420 8.94  
9,800 1186 6.41 1213 6.70 1240 7.00 1266 7.30 1293 7.62 1320 7.94 1347 8.28 1374 8.62 1402 8.98 1430 9.35  
10,000 1200 6.69 1226 6.99 1252 7.29 1278 7.59 1304 7.91 1331 8.23 1357 8.57 1384 8.91 1411 9.27 1438 9.63  
LEGEND  
Bhp — Brake Horsepower  
ESP — External Static Pressure  
NOTES:  
3. Interpolation is permitted; extrapolation is not.  
4. Fan performance is based on filter, unit casing, and wet coil  
losses.  
1. Units are available with several motor hp options. Refer to the  
physical data table.  
2. Static pressure losses must be applied to external static pressure  
before entering the fan performance table.  
25  
Electrical data  
UNIT ELECTRICAL DATA  
VOLTAGE  
RANGE  
COMPRESSOR  
NO. 1  
COMPRESSOR  
NO. 2  
UNIT  
V-PH-Hz  
50XCA  
Min  
Max  
253  
506  
632  
253  
506  
632  
253  
506  
632  
253  
506  
632  
253  
506  
632  
253  
506  
632  
RLA  
20.5  
9.6  
LRA  
155  
75  
RLA  
LRA  
208/230-3-60  
460-3-60  
575-3-60  
208/230-3-60  
460-3-60  
575-3-60  
208/230-3-60  
460-3-60  
575-3-60  
208/230-3-60  
460-3-60  
575-3-60  
208/230-3-60  
460-3-60  
575-3-60  
208/230-3-60  
460-3-60  
575-3-60  
187  
414  
518  
187  
414  
518  
187  
414  
518  
187  
414  
518  
187  
414  
518  
187  
414  
518  
06  
08  
12  
14  
16  
24  
7.6  
54  
22.4  
10.6  
7.7  
149  
75  
54  
16.0  
7.8  
110  
52  
16.0  
7.8  
5.7  
20.5  
9.6  
7.6  
23.2  
11.2  
7.9  
30.1  
16.7  
12.2  
110  
52  
5.7  
39  
39  
20.5  
9.6  
155  
75  
155  
75  
7.6  
54  
54  
23.2  
11.2  
7.9  
164  
75  
164  
75  
54  
54  
30.1  
16.7  
12.2  
225  
114  
80  
225  
114  
80  
LEGEND  
FLA  
LRA  
NEC  
RLA  
Full Load Amps  
Locked Rotor Amps  
National Electrical Code  
Rated Load Amps  
NOTES:  
1. In compliance with NEC requirements for multimotor and combination load equipment  
(NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or  
HACR circuit breaker. Canadian units may be fuse or circuit breaker.  
2. Wire sizing amps are a sum of 125% of the compressor RLA plus 100% of indoor fan  
motor FLA.  
3. Motors are protected against primary single phasing condition.  
4. Indoor-fan motors are 3-phase motors of same voltage as unit.  
26  
FAN ELECTRICAL DATA  
VOLTAGE  
RANGE  
MOTOR  
CODE  
HP  
V-PH-Hz  
FLA  
Min  
187  
414  
518  
187  
414  
518  
187  
414  
518  
187  
414  
518  
187  
414  
518  
187  
414  
518  
187  
414  
518  
187  
414  
518  
Max  
253  
506  
632  
253  
506  
632  
253  
506  
632  
253  
506  
632  
253  
506  
632  
253  
506  
632  
253  
506  
632  
253  
506  
632  
208/230-3-60  
460-3-60  
575-3-60  
208/230-3-60  
460-3-60  
575-3-60  
208/230-3-60  
460-3-60  
575-3-60  
208/230-3-60  
460-3-60  
575-3-60  
208/230-3-60  
460-3-60  
575-3-60  
208/230-3-60  
460-3-60  
575-3-60  
208/230-3-60  
460-3-60  
575-3-60  
208/230-3-60  
460-3-60  
575-3-60  
1.8/2.2  
1.1  
2.5/2.6  
1.3  
B
C
D
E
F
0.50  
0.75  
1.00  
1.50  
2.00  
3.00  
5.00  
7.50  
1
3.4/3.0  
1.5  
1.1  
4.6/4.2  
2.1  
1.6  
6.0/5.6  
2.8  
2.1  
9.2/8.6  
4.3  
3.4  
14.5/13.6  
6.8  
5.4  
21.5/19.4  
9.7  
G
H
J
7.5  
LEGEND  
Full Load Amps  
FLA  
27  
Typical wiring schematic  
LINE VOLTAGE DIAGRAM — 50XCA012-024, 208/230-3-60 UNITS SHOWN  
DISC1  
TB1  
IFC/IFR  
IFM  
100/BLK  
101/BLK  
102/BLK  
103/BLK  
104/YEL  
105/BLU  
L1  
L2  
L3  
T1  
T2  
T3  
106/BLK  
107/YEL  
108/BLU  
1
2
3
L1  
L2  
L3  
208/230V  
3
60 Hz  
109/GRN  
GND  
GND  
OFC/OFR  
OFM  
111/BLK  
112/YEL  
113/BLU  
L1  
L2  
L3  
T1  
T2  
T3  
114BLK  
115/YEL  
116/BLU  
1
2
3
117/GRN  
CLO1-Loop  
121/BLK  
122/YEL  
123/BLU  
C1  
COMP1  
118/BLK  
119/YEL  
120/BLU  
L1  
T1  
T2  
T3  
1
2
3
L2  
124/GRN  
L3  
125/BLK  
CH1  
126/BLK  
CLO2-Loop  
130/BLK  
131/YEL  
132/BLU  
C2  
COMP2  
127/BLK  
128/YEL  
129/BLU  
L1  
L2  
L3  
T1  
T2  
T3  
1
2
3
133/GRN  
134/BLK  
CH2  
135/BLK  
TB3  
TRAN1  
240V  
150/BLK  
500/BRN  
208V  
TO LOW  
VOLTAGE  
DIAGRAM  
COM  
151/YEL  
152/BLK  
501/RED  
560/BRN  
TRAN2  
240V  
208V  
TO LOW  
VOLTAGE  
DIAGRAM  
COM  
153/YEL  
561/RED  
LEGEND  
C
Compressor Contactor  
Crankcase Heater  
TB  
Terminal Block  
NOTES:  
CH  
CLO  
TRAN — Transformer  
1. Fan motors are inherently thermally protected.  
2. Three-phase motors are protected under primary  
single phase conditions.  
Compressor Lockout  
Terminal Block Connection  
COMP — Compressor  
DISC  
GND  
IFC  
Disconnect  
Ground  
3. Use conductors suitable for at least 194 F (90 C)  
when replacing factory wiring.  
Marked Terminal  
Unmarked Terminal  
Splice  
Indoor-Fan Contactor  
Indoor-Fan Motor  
Indoor-Fan Relay  
Outdoor-Fan Contactor  
Outdoor-Fan Motor  
Outdoor-Fan Relay  
4. Use copper conductors only.  
IFM  
IFR  
5. Wiring for field power supply must be rated at 165 F  
(75 C) minimum.  
OFC  
OFM  
OFR  
Factory Wiring  
Field Power Wiring  
a50-8504  
28  
LOW VOLTAGE DIAGRAM — 50XCA012-024, 208/230-3-60 UNITS SHOWN  
561  
RED  
TO LINE  
VOLTAGE  
{
501  
RED  
TB2  
501  
RED  
R
TB3  
509  
BRN  
509  
BRN  
C
IFR  
510  
510  
511  
95  
96  
A
A
B
B
IFC  
G
BLK  
BLK  
BRN  
OFR  
520  
BLU  
520  
519  
BRN  
95  
96  
OFC  
Y1  
BLU  
521  
BLU  
530  
PNK  
530  
531  
1
3
CR1  
C1  
Y2  
PNK  
BRN  
LPS1  
LPS2  
HPS1  
HPS2  
FRZ1  
FRZ2  
522  
523  
524  
525  
526  
527  
BLU  
528  
BRN  
A
B
2
2
3
BLU  
BLU  
BLU BLK  
BLK  
CLO1  
LOGIC  
529  
BRN  
529  
BRN  
1
CR1  
532  
PNK  
533  
PNK  
534  
PNK  
535  
PNK BLK  
536  
537  
BLK  
538  
PNK  
539  
BRN  
A
B
C2  
2
4
3
CLO2  
LOGIC  
540  
BRN  
540  
BRN  
1
LEGEND  
Compressor Contactor  
Crankcase Heater  
NOTES:  
C
Terminal Block Connection  
1. Fan motors are inherently thermally protected.  
CH  
2. Three-phase motors are protected under primary  
single phase conditions.  
CLO  
Compressor Lockout  
Marked Terminal  
Unmarked Terminal  
Splice  
COMP — Compressor  
3. Use conductors suitable for at least 194 F (90 C)  
when replacing factory wiring.  
FRZ  
HPS  
IFC  
Freeze Protection  
High Pressure Switch  
Indoor-Fan Contactor  
Indoor-Fan Relay  
4. Use copper conductors only.  
5. Wiring for field power supply must be rated at 165 F  
(75 C) minimum.  
IFR  
Factory Wiring  
Field Power Wiring  
OFC  
OFR  
TB  
Outdoor-Fan Contactor  
Outdoor-Fan Relay  
Terminal Block  
a50-8505  
29  
Controls  
A second stage on 50XCA12 to 24 units will close if  
additional cooling demand is required, and will start the  
second-stage compressor. When the thermostat is satisfied,  
the second-stage compressor will stop first, and then the  
first-stage compressors will stop when cooling demand is  
satisfied. The condenser will also stop as soon as both cool-  
ing stages are satisfied.  
A 5-minute timer, TDR (time-delay relay), will prevent  
the compressor(s) from restarting for 5 minutes after any  
compressor has stopped.  
Operating sequence  
All units require the addition of a thermostat accessory  
package to complete the control circuit. The sequence of  
operation may vary depending on which package is  
selected.  
Room-mounted thermostat — The unit uses an  
electronic thermostat mounted in the conditioned space.  
Fan circulation — When the thermostat selector switch is  
set to the FAN position, the evaporator-fan motor will  
operate to provide air circulation.  
All units — The control circuit incorporates a current  
sensing lockout relay (Cycle-LOC™ device) that locks off  
the compressor(s) when any safety device is activated (low  
or high pressure switches, or compressor internal over-  
load). If any compressor safety device opens, the compres-  
sor will stop. High and low-pressure switches and  
compressor motor overload protectors will reset automati-  
cally when the condition which caused the device to trip  
has dropped below the reset condition. To reset the Cycle-  
LOC control device, manually turn the control power OFF,  
then back ON.  
Cooling — The evaporator will operate continuously or  
when the compressor runs, depending on the setting of the  
thermostat fan selector switch. When the thermostat closes  
(on a call for cooling), the control relay condenser-fan con-  
tactor and compressor contactor(s) close. The control relay  
will start the indoor fan if it is not already running. The  
condenser fan contactor will start the condenser air fan  
and the compressor contactors will immediately start the  
compressor(s).  
30  
Typical piping and wiring  
LEGEND  
NEC  
National Electrical Code  
Condenser Airflow  
Evaporator Airflow  
a50-8506  
Power Wiring  
Control Wiring  
NOTES:  
1. Wiring and piping shown are general points of connection guides only  
and are not intended for or to include all details for a specific installation.  
2. All wiring must comply with applicable local and national codes.  
3. All piping must follow standard piping techniques. Refer to Carrier Sys-  
tem Design Manual Part 3 for details.  
4. Connect both drains to building waste system and provide a trap of suffi-  
cient depth for unit static.  
31  
Application data  
of the unit openings. When bends must be made, they  
should be as gradual as space limitations will allow. If the  
unit will be operated in cold outdoor weather, or if dampers  
are not provided at the louver, then the condenser ducts  
should be insulated to prevent condensation.  
Design of the louver used for the inlet and discharge of  
the condenser airflow is critical to preventing recirculation  
of air and high pressure tips. The louver blades must be  
heavy enough to prevent unit airflow from drawing them  
together. Louver blades should be a minimum of 18 gage,  
and widths over 30 in. should have stiffeners. The inlet lou-  
ver should not have a flange and the discharge louver  
should have a flange which directs the air away from the  
inlet. The use of a deflector in conjunction with the con-  
denser air discharge is also recommended.  
Location  
For best results unit must be properly located and installed.  
Selected location should not be adjacent to an acoustically  
sensitive space, for example a conference room or execu-  
tive office. The best location is in mechanical rooms near  
areas like elevators, restrooms, stairways, or similar  
spaces. The mechanical room should use construction  
methods which will help isolate the transmission of acousti-  
cal energy.  
Since these units typically use large quantities of ducted  
condenser air, select a location with the best access to an  
outside window or wall to accommodate condenser air lou-  
ver. Locate the unit as close to the wall opening as possible  
but allow space for return air inlet and access to the evapo-  
rator and condenser coil for cleaning. Units on the same  
floor should have a minimum of 6 ft between units to pre-  
vent recirculation of condenser air. Units floor to floor  
should have a minimum of 10 ft between units to prevent  
recirculation. Units should not be located with several units  
pulling condenser air from a small space between build-  
ings, where air may be recirculated. Recirculation of con-  
denser air will result in increased head pressure which may  
cause units to trip on high pressure.  
Piping traps  
All 50XCA units have a drain for the condensate from the  
evaporator coil. The condensate trap should have a depth  
adequate to allow 2 in. of water in the trap with the unit  
running. Provide a clean-out on the trap and vent and pitch  
the trap for proper drainage.  
Controls  
There are several methods for applying 50XCA units in  
different space applications. See page 33 for recom-  
mended equipment room applications and locations of key  
components.  
All units require a room mounted 24-v thermostat to com-  
plete the control system. Carrier has several versions of  
thermostats to meet a wide range of job conditions, includ-  
ing fully programmable and light-activated versions.  
Moving units into existing buildings  
The 50XCA06-14 units are designed to pass through most  
36-in. door openings. The filter rack may also be removed.  
Operational limits  
Airflow — 300 to 500 cfm per ton  
Air temperature to evaporator:  
Unit isolation  
Cooling  
Maximum 90 F  
Minimum 67 F  
Condenser  
Nominal airflow 350 cfm per ton,  
Range: 300 to 500 cfm per ton  
Unit compressors are internally isolated and the compres-  
sor compartment is lined with acoustical insulation. If addi-  
tional vibration isolation is desired, rubber in-shear pads  
are recommended under the four corners of the unit.  
Spring isolation is not recommended. All duct connections  
to the unit should be made with flexible connections to pre-  
vent any transmission of vibration to the ductwork.  
Condenser air temperature  
Maximum 115 F  
Evaporator ductwork  
Minimum without low ambient 55 F  
Minimum with low ambient 0° F  
Supply duct should be properly supported and the aspect  
ratio as close to square as possible. Duct should be sized for  
a maximum of 2000 fpm velocity in areas outside the  
equipment room. The duct should be lined with acoustical  
insulation for a minimum of 10 ft beyond the equipment  
room. A flexible duct connection should be used on the  
connection to the unit to prevent transmission of any unit  
vibrations into the duct.  
Return duct may be attached to the unit, but is not nec-  
essary. The return to the unit should prevent line of sight  
visibility to the space. Insulated return duct is also recom-  
mended for acoustically sensitive spaces. Maximum veloc-  
ity should not exceed 1000 fpm over occupied spaces.  
Adequate return area is essential for proper operation.  
Sound considerations  
All units are acoustically insulated. When installed in or  
near areas requiring additional sound attenuation:  
• Locate unit in equipment room or closet  
• Use acoustic lining in ductwork  
• Provide square duct elbows with acoustic lining and  
turning vanes  
• Locate the first supply outlet no less than 10 ft from a  
lined elbow.  
• If unit is located in the conditioned space, return air  
opening from the space should be a lined elbow or  
equivalent.  
• For critical applications, use packaged sound attenua-  
tors or duct silencers. Sound attenuation may be used  
on both evaporator air and condenser air.  
Condenser ductwork  
Condenser supply and discharge air ducts should be as  
short and straight as possible. Cross-sectional area of the  
inlet and discharge should never be less than the face area  
32  
filters, and sound traps (if used). It is best to adjust the fan  
to the nominal airflow and the rpm which will achieve this  
performance. Excess airflow and rpm will make units  
noisier.  
Setting condenser fan speed  
The 50XCA condenser has a centrifugal blower and a vari-  
able pitch drive which allow adjusting the condenser  
airflow to match the static from the louvers, ductwork,  
TYPICAL UNIT LOCATION  
*Provide access to clean condenser coil.  
a50-8507  
NOTE: Refer to Installation Instructions for detailed louver information.  
33  
Guide specifications  
2. Fan shall be belt drive with an adjustable pitch  
motor pulley and fixed pitch fan pulley, with  
permanently lubricated ball-bearing type bear-  
ings. Units larger than 12 tons use pillow block  
bearings.  
3. Motor shall be 3-phase high-efficiency NEMA  
frame TEFC (totally enclosed fan cooled) of the  
same voltage as the compressor(s). Motor shall  
have permanently lubricated ball bearings.  
Indoor Self-Contained Air-Cooled Unit  
Constant Volume Application  
HVAC Guide Specifications  
Size Range: 5 to 20 Tons  
Carrier Model Number: 50XCA  
Part 1 — General  
1.01 SYSTEM DESCRIPTION  
Indoor packaged vertical air-cooled cooling unit  
using hermetic scroll compressors and built-in con-  
denser fan for cooling duty. Unit shall discharge sup-  
ply air vertically or horizontally and condenser air  
horizontally as shown on contract drawings.  
D. Compressor:  
Hermetic scroll compressors shall be internally pro-  
tected with high pressure relief. Compressors shall  
be factory rubber shock mounted with internal  
spring vibration isolators.  
1.02 QUALITY ASSURANCE  
E. Coils:  
A. Units shall be rated in accordance with AHRI Stan-  
dard 340/360, latest edition, as appropriate.  
B. Unit shall be designed to conform to ANSI/  
ASHRAE 15, latest revision safety code, and UL  
Standard 1995, and shall be UL listed under both  
American and Canadian Standards.  
C. Unit shall be built in an ISO 9001:2000 certified  
manufacturing facility and shall be fully run-tested.  
D. Insulation, adhesive, and liner system shall meet  
NFPA 90A requirements for flame spread and  
smoke generation.  
1. Evaporator and condenser coil shall have alumi-  
num plate fins mechanically bonded to seamless  
copper tubes with all joints brazed. Tube sheet  
openings shall be swaged to prevent tube wear.  
Coils shall be face split design.  
2. Direct expansion coil shall be designed and  
tested in accordance with ANSI/ASHRAE 15,  
latest revision safety code.  
3. Coil and drain pan shall be accessible through  
service access panels for cleaning.  
F. Filter:  
1.03 DELIVERY, STORAGE, AND HANDLING  
Filter frame shall be installed upstream of the cool-  
ing coil, designed to take a 1-in. or 2-in. thick clean-  
able or disposable type commercially available filter.  
Filters shall be accessible from either side of the unit  
and filter rack shall be usable with ducted or free  
return. Disposable filters will be supplied with the  
unit.  
Units shall be stored and handled according to man-  
ufacturer’s recommendations.  
Part 2 — Products  
2.01 EQUIPMENT  
A. General:  
Factory-assembled, single-piece, air-cooled cooling  
unit. Unit shall consist of scroll refrigerant compres-  
sor(s), indoor fan section with belt drive centrifugal  
fans and motor, evaporator coil section with direct  
expansion coil and drain pan, air-cooled condenser  
fan section with belt drive centrifugal fans and  
motor, factory wiring, piping and controls, and a  
system charge of refrigerant (R-410A). Unit may be  
used with or without return ductwork.  
G. Condenser:  
1. Fans shall be double inlet, centrifugal wheel  
with forward curved blades designed for contin-  
uous operation. Fan wheel and scroll shall be  
constructed of steel with corrosion resistant fin-  
ish, and statically and dynamically balanced.  
2. Fan shall be belt drive with an adjustable pitch  
motor pulley and fixed pitch fan pulley, with  
permanently lubricated, ball-bearing type bear-  
ings. Units larger than 12 tons use pillow block  
bearings.  
B. Unit Cabinet:  
1. Cabinet shall be constructed of minimum 18  
gage zinc surface alloyed steel with a baked  
enamel finish. Unit shall be capable of with-  
standing ASTM B117 500-hour salt spray test.  
2. Cabinet shall be fully insulated.  
3. Unit drain pan shall have positive double slope  
to the drain to prevent standing water in pan.  
3. Motor shall be 3-phase high-efficiency NEMA  
frame TEFC (totally enclosed fan cooled) of the  
same voltage as the compressor(s). Motor shall  
have permanently lubricated ball bearings.  
H. Operating Characteristics:  
Unit shall be capable of providing a constant volume  
of conditioned air at a specified static pressure  
within the unit’s normal operating range. Unit shall  
have dual-stage cooling capacity control on all units  
sizes 12 to 24. Each compressor shall be on an  
independent refrigerant circuit. Unit shall be capable  
of starting and operating at up to 115 F outdoor  
4. Panels for servicing shall be easily removable.  
C. Evaporator Fan Section:  
1. Fans shall be double inlet, centrifugal wheel  
with forward curved blades designed for contin-  
uous operation. Fan wheel and scroll shall be  
constructed of steel with corrosion resistant fin-  
ish, and statically and dynamically balanced.  
34  
ambient. Units shall be able to operate down to 0° F  
when equipped with low ambient option.  
I. Controls and Safeties:  
c. Current lockout.  
d. Inherent automatic fan motor overload.  
J. Electrical Requirements:  
1. Units shall be furnished with a control terminal  
block for connection of low voltage controls  
and thermostats.  
All electrical power wiring shall enter the unit cabi-  
net at a single location. Control circuit is 24-v, suit-  
able for a field-supplied 24-v thermostat.  
2. Unit shall require a room-mounted thermostat  
mounted in the conditioned space. Thermostat  
shall be digital type. Thermostat shall control  
fan operation and be capable of turning unit on  
and off.  
3. Units shall have the following factory-  
installed safeties:  
K. Refrigerant Components:  
Refrigerant circuit components include thermal  
expansion valves, distributor with nozzle, filter dri-  
ers, and charging service valves on each circuit.  
Suction line shall have a refrigerant loop to prevent  
refrigerant drain back to the compressor. Suction  
piping shall be insulated with closed cell piping  
insulation.  
a. High and low-pressure switches.  
b. Motor and compressor overtemperature.  
35  
Carrier Corporation • Syracuse, New York 13221  
310  
2-10  
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.  
Section 5  
Pg 36  
Catalog No. 04-52500052-01  
Printed in U.S.A.  
Form 50XCA-1PD  
Replaces: New  
Tab 5a  

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