Page 6 of 15
507861-01
Issue 2120
Airflow Performance as a Function of External Static Pressure
Model
Indoor Blower Speed
0.1 “w.c.
0.2 “w.c.
0.3 “w.c.
0.4 “w.c.
0.5 “w.c.
SCFM
Watts
SCFM
Watts
SCFM
Watts
SCFM
Watts
SCFM
Watts
*MHP4-1
1-091*P
TAP 1 (FAN)
365
28
330
31
275
35
225
38
180
41
TAP 2 (COOL/HP)
†
375
28
325
32
275
35
N/A
N/A
N/A
N/A
TAP 3 (COOL/HP)
N/A
N/A
N/A
N/A
395
54
370
58
330
62
3 kW
TAP 4 (AUX HEAT)*
515
55
485
58
450
62
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
600
73
570
78
545
84
515
88
475
92
5 kW
TAP 4 (AUX HEAT)*
570
69
545
73
515
77
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
660
92
635
98
605
104
580
109
550
114
*MHP4-1
1-121*P
TAP 1 (FAN)
365
28
330
31
275
35
225
38
180
41
TAP 2 (COOL/HP)
†
490
50
460
55
420
59
N/A
N/A
N/A
N/A
TAP 3 (COOL/HP)
N/A
N/A
555
77
525
82
495
86
460
91
3 kW
TAP 4 (AUX HEAT)*
515
55
485
58
450
62
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
600
73
570
78
545
84
515
88
475
92
5 kW
TAP 4 (AUX HEAT)*
570
69
545
73
515
77
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
660
92
635
98
605
104
580
109
550
114
*MHP4-1
1-181*P
TAP 1 (FAN)
365
32
335
35
280
39
235
42
175
46
TAP 2 (COOL/HP)
†
615
103
590
108
555
112
530
117
500
121
TAP 3 (COOL/HP)
700
135
670
141
640
146
615
151
590
157
3 kW
TAP 4 (AUX HEAT)*
615
93
590
97
555
101
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
715
127
685
134
655
140
630
146
600
151
5 kW
TAP 4 (AUX HEAT)*
665
110
635
114
605
118
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
750
148
725
154
700
160
675
166
650
171
7 kW
TAP 4 (AUX HEAT)*
725
137
705
144
675
150
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
825
194
800
200
780
205
755
209
725
213
10 kW
TAP 4 (AUX HEAT)*
750
148
725
154
700
161
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
860
213
832
219
805
224
780
228
750
232
*MHP4-1
1-241*P
TAP 1 (FAN)
460
43
420
47
380
51
350
54
290
59
TAP 2 (COOL/HP)
†
815
150
785
161
760
165
740
172
715
178
TAP 3 (COOL/HP)
885
201
860
208
835
213
805
217
785
220
5 kW
TAP 4 (AUX HEAT)*
800
146
775
152
750
157
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
905
201
880
207
855
212
825
216
800
219
7 kW
TAP 4 (AUX HEAT)*
855
174
830
179
800
183
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
955
227
930
231
900
235
875
239
850
243
10 kW
TAP 4 (AUX HEAT)*
855
174
830
179
800
183
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
955
227
930
231
900
235
875
239
850
243
N/A: Do not operate unit using this blower speed at this external static pressure.
† As shipped speed for Cooling operation. Blower speed must be field adjusted to Speed Tap 3 for higher duct static applications.
* As shipped speed for Heating operation. Blower speed must be field adjusted to Speed Tap 5 for higher duct static applications.
Table 3. Blower Performance (208V or 230V)
