Air Quantity Limits - Carrier 50EJ Installation, Start-Up And Service Instructions Manual

Table 14 — Fan Performance, 50EJ048 — Vertical Discharge Units
FOR EW UNITS, REDUCE NET AVAILABLE EXTERNAL STATIC PRESSURE BY 0.5 IN. WG
AIRFLOW
0.2
(Cfm)
Rpm Bhp
13,000 683 7.10
14,000 730 8.53
15,000 778 10.14
16,000 826 11.93
17,000 875 13.90
18,000 923 16.06
19,000 972 18.42
20,000 1021 20.98
AIRFLOW
1.8
(Cfm)
Rpm Bhp
13,000 921 12.18
14,000 955 13.98
15,000 991 15.98
16,000 1028 18.17
17,000 1066 20.58
18,000 1106 23.19
19,000 1146 26.04
20,000 1187 29.11
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
3.4
(Cfm)
Rpm Bhp
13,000 1124 16.48
14,000 1150 18.43
15,000 1177 20.57
16,000 — —
17,000 — —
18,000 — —
19,000 — —
20,000 — —
UNIT
50EJ,EK,EW,EY
024
028
030
034
038
044
048
LEGEND
CV — Constant Volume
VAV — Variable Air Volume
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.4 0.6
Rpm Bhp Rpm Bhp
715 8.59 747 9.09
761 10.25 790 10.77
807 12.10 834 12.65
853 14.15 879 14.72
900 16.42 925 17.01
947 18.90 971 19.51
995 21.61 1017 22.24
1042 24.55 1064 25.20
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.0 2.2
Rpm Bhp Rpm Bhp
948 12.71 975 13.24
981 14.53 1006 15.08
1015 16.54 1040 17.11
1051 18.76 1074 19.34
1089 21.18 1111 21.78
1127 23.82 1148 24.44
1166 26.68 1187 27.32
— — — —
3.6 3.6
Rpm Bhp Rpm
1148 17.03 1171
1173 19.00 1195
1199 21.16 —
— — —
— — —
— — —
— — —
— — —
Table 15 — Air Quantity Limits
MINIMUM HEATING
CFM
6,000
7,500
8,250
9,000
10,500
12,000
13,500
0.8 1.0
Rpm Bhp Rpm Bhp
777 9.60 808 10.11
819 11.30 847 11.83
862 13.19 888 13.75
905 15.29 931 15.86
949 17.60 973 18.19
994 20.12 1017 20.73
1039 22.87 1061 23.50
1085 25.85 1106 26.50
2.4 2.6
Rpm Bhp Rpm Bhp
1001 13.77 1026 14.30
1031 15.63 1056 16.18
1063 17.68 1087 18.25
1097 19.93 1120 20.52
1133 22.39 1154 23.00
1169 25.07 1190 25.69
— — — —
— — — —
LEGEND
Bhp — Brake Horsepower
Bhp
NOTES:
17.59
1. Fan performance is based on wet coils, economizer, roof curb,
19.57
cabinet losses, and clean 2-in. filters.
—
2. Conversion − Bhp to watts:
—
—
Watts =
—
Motor efficiency
—
3. VAV units will operate down to 70 cfm/ton.
—
MINIMUM COOLING
CFM (VAV)
2000
2500
2750
3000
3500
4000
4500
38
1.2 1.4
Rpm Bhp Rpm Bhp
837 10.62 866 11.14
875 12.36 902 12.90
915 14.30 941 14.86
955 16.44 980 17.01
997 18.78 1020 19.38
1039 21.34 1062 21.96
1083 24.13 1104 24.76
1126 27.15 1147 27.80
2.8 3.0
Rpm Bhp Rpm Bhp
1051 14.84 1076 15.39
1080 16.74 1103 17.30
1110 18.83 1133 19.41
1142 21.12 1164 21.71
1175 23.61 1197 24.23
— — — —
— — — —
— — — —
Bhp x 746
MINIMUM COOLING
CFM (CV)
6,000
7,500
8,250
9,000
10,500
12,000
13,500
1.6
Rpm Bhp
894 11.66
929 13.44
966 15.42
1004 17.59
1043 19.98
1084 22.58
1125 25.40
1167 28.46
3.2
Rpm Bhp
1100 15.93
1127 17.86
1155 19.99
1185 22.31
— —
— —
— —
— —
MAXIMUM
CFM
10,000
12,500
13,750
15,000
17,500
20,000
22,500