Carrier 50PM20 Installation Instructions Manual page 53

CFM
4800
5000
8000
7000
8000
9000
10000
11500
LEGEND
Nominal Heater
Size (kw)
25
Accessory/FIOP Electric Heat Static Pressure Drop (in. wg)
Pressure Drop (in.
wg)
0.01
0.01
0.02
0.03
0.04
0.05
0.08
0.09
Nominal Heater
Size (kw)
5O
Pressure Drop (in.
wg)
0.02
0.02
0.04
0.08
0.08
0.1
0.13
0.18
Nominal Heater
Size (kw)
75
Pressure Drop (in.
wg)
0.03
0.04
0.08
0.08
0.12
0.15
0.2
0.27
FlOP - Factory-Installed Option
NOTES:
1. Heaters are rated at 240v, 480v, and 600v.
2. The static pressure must be added to the external static pressure. The sum and the evaporator entering-air cfm should then be used in conjunction with the
Fan Performance tables to determine blower rpm, bhp, and watts.
Fan RPM at Motor Pulley Settings*
MOTOR PULLEY TURNS OPEN
50PG DRIVE
0 1/2 1 11/2 2 21/2 3 31/2 4 41/2 5 51/2 8
Low Range Vertical 685 706 727 749 770 791 812 833 854 876 897 918 939
Mid-Low Range Vertical 949 970 992 1013 1035 1056 1078 1099 1120 1142 1163 1185 1206
Mid-High Range Vertical 941 961 980 1000 1019 1039 1059 1078 1098 1117 1137 1156 1176
20 and 24 High Range Vertical 1014 1038 1061 1085 1108 1132 1156 1179 1203 1226 1250 1273 1297
(230 and
480 volt) Low Range Horizontal 685 706 727 749 770 791 812 833 854 876 897 918 939
Mid-Low Range Horizontal 949 970 992 1013 1035 1056 1078 1099 1120 1142 1163 1185 1206
Mid-High Range Horizontal 941 961 980 1000 1019 1039 1059 1078 1098 1117 1137 1156 1176
High Range Horizontal 1014 1038 1061 1085 1108 1132 1156 1179 1203 1226 1250 1273 1297
Low Range Vertical 751 768 785 802 819 836 853 869 886 903 920 937 954
Mid-Low Range Vertical 949 970 992 1013 1035 1056 1078 1099 1120 1142 1163 1185 1206
Mid-High Range Vertical 941 961 980 1000 1019 1039 1059 1078 1098 1117 1137 1156 1176
20 and 24 High Range Vertical 1014 1038 1061 1085 1108 1132 1156 1179 1203 1226 1250 1273 1297
(575 Volt) Low Range Horizontal 751 768 785 802 819 836 853 869 886 903 920 937 954
Mid-Low Range Horizontal 949 970 992 1013 1035 1056 1078 1099 1120 1142 1163 1185 1206
Mid-High Range Horizontal 941 961 980 1000 1019 1039 1059 1078 1098 1117 1137 1156 1176
High Range Horizontal 1014 1038 1061 1085 1108 1132 1156 1179 1203 1226 1250 1273 1297
Low Range Vertical 687 703 718 734 749 765 780 796 811 827 842 858 873
Mid-Low Range Vertical 805 822 839 856 872 889 906 923 940 957 973 990 1007
Mid-High Range Vertical 941 961 980 1000 1019 1039 1059 1078 1098 1117 1137 1156 1176
28 High Range Vertical 1014 1038 1061 1085 1108 1132 1156 1179 1203 1226 1250 1273 1297
(all voltages) Low Range Horizontal 687 703 718 734 749 765 780 796 811 827 842 858 873
Mid-Low Range Horizontal 805 822 839 856 872 889 906 923 940 957 973 990 1007
Mid-High Range Horizontal 941 961 980 1000 1019 1039 1059 1078 1098 1117 1137 1156 1176
High Range Horizontal 1014 1038 1061 1085 1108 1132 1156 1179 1203 1226 1250 1273 1297
* Approximate fan rpm shown, based on 1725 rpm motor.
NOTE: Factory pulley speed setting is at 3 turns open.
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