508196-01
Issue 2120
Page 7 of 18
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
HP
SCFM Watts
HP
SCFM Watts
HP
SCFM Watts
HP
SCFM Watts
HP
*MHP4-12-091*P
TAP 1 (FAN)
365
28
0.04
330
31
0.04
275
35
0.05
225
38
0.05
180
41
0.05
TAP 2 (COOL/HP)
†
375
28
0.04
325
32
0.04
275
35
0.05
N/A
N/A
N/A
N/A
N/A
N/A
TAP 3 (COOL/HP)
N/A
N/A
N/A
N/A
N/A
N/A
395
54
0.07
370
58
0.08
330
62
0.08
3 kW
TAP 4 (AUX HEAT)*
515
55
0.07
485
58
0.08
450
62
0.08
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
600
73
0.10
570
78
0.10
545
84
0.11
515
88
0.12
475
92
0.12
5 kW
TAP 4 (AUX HEAT)*
570
69
0.09
545
73
0.10
515
77
0.10
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
660
92
0.12
635
98
0.13
605
104
0.14
580
109
0.15
550
114
0.15
*MHP4-12-121*P
TAP 1 (FAN)
365
28
0.04
330
31
0.04
275
35
0.05
225
38
0.05
180
41
0.05
TAP 2 (COOL/HP)
†
490
50
0.07
460
55
0.07
420
59
0.08
N/A
N/A
N/A
N/A
N/A
N/A
TAP 3 (COOL/HP)
N/A
N/A
N/A
555
77
0.10
525
82
0.11
495
86
0.12
460
91
0.12
3 kW
TAP 4 (AUX HEAT)*
515
55
0.07
485
58
0.08
450
62
0.08
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
600
73
0.10
570
78
0.10
545
84
0.11
515
88
0.12
475
92
0.12
5 kW
TAP 4 (AUX HEAT)*
570
69
0.09
545
73
0.10
515
77
0.10
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
660
92
0.12
635
98
0.13
605
104
0.14
580
109
0.15
550
114
0.15
*MHP4-12-181*P
TAP 1 (FAN)
365
32
0.04
335
35
0.05
280
39
0.05
235
42
0.06
175
46
0.06
TAP 2 (COOL/HP)
†
615
103
0.14
590
108
0.14
555
112
0.15
530
117
0.16
500
121
0.16
TAP 3 (COOL/HP)
700
135
0.18
670
141
0.19
640
146
0.20
615
151
0.20
590
157
0.21
3 kW
TAP 4 (AUX HEAT)*
615
93
0.12
590
97
0.13
555
101
0.14
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
715
127
0.17
685
134
0.18
655
140
0.19
630
146
0.20
600
151
0.20
5 kW
TAP 4 (AUX HEAT)*
665
110
0.15
635
114
0.15
605
118
0.16
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
750
148
0.20
725
154
0.21
700
160
0.21
675
166
0.22
650
171
0.23
7 kW
TAP 4 (AUX HEAT)*
725
137
0.18
705
144
0.19
675
150
0.20
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
N/A
N/A
N/A
800
200
0.27
780
205
0.27
755
209
0.28
725
213
0.29
10 kW
TAP 4 (AUX HEAT)*
750
148
0.20
725
154
0.21
700
161
0.22
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
N/A
N/A
N/A
N/A
N/A
N/A
805
224
0.30
780
228
0.31
750
232
0.31
*MHP4-12-241*P
TAP 1 (FAN)
460
43
0.06
420
47
0.06
380
51
0.07
350
54
0.07
290
59
0.08
TAP 2 (COOL/HP)
†
815
150
0.20
785
161
0.22
760
165
0.22
740
172
0.23
715
178
0.24
TAP 3 (COOL/HP)
885
201
0.27
860
208
0.28
835
213
0.29
805
217
0.29
785
220
0.30
5 kW
TAP 4 (AUX HEAT)*
800
146
0.20
775
152
0.20
750
157
0.21
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
905
201
0.27
880
207
0.28
855
212
0.28
825
216
0.29
800
219
0.29
7 kW
TAP 4 (AUX HEAT)*
855
174
0.23
830
179
0.24
800
183
0.25
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
N/A
N/A
N/A
930
231
0.31
900
235
0.32
875
239
0.32
850
243
0.33
10 kW
TAP 4 (AUX HEAT)*
855
174
0.23
830
179
0.24
800
183
0.25
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (AUX HEAT)
N/A
N/A
N/A
930
231
0.31
900
235
0.32
875
239
0.32
850
243
0.33
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)
