Page 6 of 14
507860-01
Issue 1927
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
*MCE4-1
1-091*P
(FAN)
355
28
0.04
320
31
0.04
275
35
0.05
230
38
0.05
160
42
0.06
(COOL)†
375
31
0.04
330
33
0.04
285
37
0.05
N/A
N/A
N/A
N/A
N/A
N/A
(COOL)
N/A
N/A
N/A
N/A
N/A
N/A
390
55
0.07
370
58
0.08
330
62
0.08
0 kW
TAP 4 (HEAT)*
375
31
0.04
330
33
0.04
285
37
0.05
240
40
0.05
180
44
0.06
TAP 5 (HEAT)
465
47
0.06
425
51
0.07
390
55
0.07
370
58
0.08
330
62
0.08
3 kW
TAP 4 (HEAT)*
430
41
0.05
410
45
0.06
385
49
0.07
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (HEAT)
520
58
0.08
500
63
0.08
475
68
0.09
440
73
0.10
400
77
0.10
5 kW
TAP 4 (HEAT)*
525
59
0.08
505
65
0.09
480
69
0.09
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (HEAT)
615
81
0.11
590
88
0.12
560
94
0.13
530
99
0.13
500
103
0.14
*MCE4-1
1-121*P
TAP 1 (FAN)
355
28
0.04
320
31
0.04
275
35
0.05
230
38
0.05
160
42
0.06
TAP 2 (COOL)
†
420
40
0.05
380
42
0.06
355
46
0.06
N/A
N/A
N/A
N/A
N/A
N/A
TAP 3 (COOL)
N/A
N/A
N/A
480
62
0.08
445
66
0.09
415
70
0.09
380
74
0.10
0 kW
TAP 4 (HEAT)*
420
40
0.05
380
42
0.06
355
46
0.06
315
50
0.07
275
54
0.07
TAP 5 (HEAT)
515
58
0.08
480
62
0.08
445
66
0.09
415
70
0.09
380
74
0.10
3 kW
TAP 4 (HEAT)*
430
41
0.05
410
45
0.06
385
49
0.07
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (HEAT)
520
58
0.08
500
63
0.08
475
68
0.09
440
73
0.10
400
77
0.10
5 kW
TAP 4 (HEAT)*
525
59
0.08
505
65
0.09
480
69
0.09
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (HEAT)
615
81
0.11
590
88
0.12
560
94
0.13
530
99
0.13
500
103
0.14
*MCE4-1
1-181*P
TAP 1 (FAN)
355
28
0.04
320
31
0.04
275
35
0.05
230
38
0.05
160
42
0.06
TAP 2 (COOL)
†
660
103
0.14
640
109
0.15
610
114
0.15
580
119
0.16
550
124
0.17
TAP 3 (COOL)
725
131
0.18
710
135
0.18
685
140
0.19
660
146
0.20
640
152
0.20
0 kW
TAP 4 (HEAT)*
660
103
0.14
640
109
0.15
610
114
0.15
580
119
0.16
550
124
0.17
TAP 5 (HEAT)
725
131
0.18
710
135
0.18
685
140
0.19
660
146
0.20
640
152
0.20
3 kW
TAP 4 (HEAT)*
430
41
0.05
410
45
0.06
385
49
0.07
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (HEAT)
520
59
0.08
500
63
0.08
475
67
0.09
440
72
0.10
400
77
0.10
5 kW
TAP 4 (HEAT)*
525
60
0.08
505
65
0.09
480
70
0.09
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (HEAT)
615
81
0.11
590
88
0.12
560
95
0.13
530
100
0.13
500
103
0.14
7 kW
TAP 4 (HEAT)*
685
108
0.14
670
116
0.16
645
122
0.16
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (HEAT)
790
153
0.21
770
160
0.21
750
166
0.22
720
172
0.23
700
177
0.24
10 kW
TAP 4 (HEAT)*
790
153
0.21
770
160
0.21
750
166
0.22
N/A
N/A
N/A
N/A
N/A
N/A
TAP 5 (HEAT)
890
211
0.28
870
217
0.29
850
222
0.30
820
226
0.30
800
230
0.31
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)