255427-YTG-F-1006
10
Unitary Products Group
COOLING AIRFLOW DATA - MV MODELS
HIGH / LOW SPEED COOLING AND HEAT PUMP CFM
12B Air Handler
12D Air Handler
JUMPER SETTINGS
CFM
m
3
/min
CFM
m
3
/min
High
Low
High
Low
High
Low
High
Low
COOL Tap
ADJ Tap*
1307
882
37.0
25.0
1366
869
38.7
24.6
A
B
1080
756
30.6
21.4
1097
717
31.1
20.3
B
B
1270
862
36.0
24.4
1312
856
37.2
24.2
A
A
943
689
26.7
19.5
957
646
27.1
18.3
B
A
1146
786
32.5
22.3
1167
761
33.0
21.5
A
C
1050
726
29.7
20.6
1051
703
29.8
19.9
C
B
870
632
24.6
17.9
863
580
24.4
16.4
B
C
771
594
21.8
16.8
739
520
20.9
14.7
D
B
931
668
26.4
18.9
927
629
26.2
17.8
C
A
693
565
19.6
16.0
658
495
18.6
14.0
D
A
851
624
24.1
17.7
830
567
23.5
16.1
C
C
655
567
18.5
16.1
594
488
16.8
13.8
D
C
16C Air Handler
20D Air Handler
JUMPER SETTINGS
CFM
m
3
/min
CFM
m
3
/min
High
Low
High
Low
High
Low
High
Low
COOL Tap
ADJ Tap*
1920
1321
54.4
37.4
2209
1394
62.6
39.5
A
B
1699
1189
48.1
33.7
2022
1394
57.3
39.5
B
B
1884
1296
53.3
36.7
2178
1381
61.7
39.1
A
A
1558
1094
44.1
31.0
1798
1378
50.9
39.0
B
A
1714
1193
48.5
33.8
1965
1226
55.6
34.7
A
C
1451
1037
41.1
29.4
1843
1143
52.2
32.4
C
B
1403
1009
39.7
28.6
1596
1226
45.2
34.7
B
C
1288
947
36.5
26.8
1700
1066
48.1
30.2
D
B
1336
978
37.8
27.7
1608
1023
45.5
29.0
C
A
1214
888
34.4
25.1
1493
967
42.3
27.4
D
A
1239
915
35.1
25.9
1430
911
40.5
25.8
C
C
1098
839
31.1
23.8
1334
877
37.8
24.8
D
C
All CFM’s are shown at 0.5” w.c. external static pressure.These units have variable speed motors that automatically adjust to provide constant CFM from 0.0” to
0.6” w.c. static pressure. From 0.6” to 1.0” static pressure, CFM is reduced by 2% per 0.1” increase in static. Operation on duct systems with greater than 1.0” w.c.
external static pressure is not recommended.
NOTE: At some settings, LOW COOL and/or LOW HEAT airflow may be lower than what is required to operate an airflow switch on certain models of electronic air
cleaners. Consult the instructions for the electronic air cleaner for further details.
* The ADJ “D” tap should not be used.
HEATING AIRFLOW DATA - MV MODELS
HIGH / LOW SPEED COOLING AND HEAT PUMP CFM
12B Air Handler
12D Air Handler
JUMPER SETTINGS
CFM
m
3
/min
CFM
m
3
/min
High
Low
High
Low
High
Low
High
Low
COOL Tap
ADJ Tap*
1270
791
36.0
22.4
1312
762
37.2
21.6
A
A
943
714
26.7
20.2
957
668
27.1
18.9
B
A
931
643
26.4
18.2
927
591
26.2
16.7
C
A
693
567
19.6
16.1
658
488
18.6
13.8
D
A
16C Air Handler
20D Air Handler
JUMPER SETTINGS
CFM
m
3
/min
CFM
m
3
/min
High
Low
High
Low
High
Low
High
Low
COOL Tap
ADJ Tap*
1884
1217
53.3
34.5
2178
1217
61.7
34.5
A
A
1558
1065
44.1
30.2
1798
1036
50.9
29.3
B
A
1336
823
37.8
23.3
1608
748
45.5
21.2
C
A
1214
727
34.4
20.6
1493
551
42.3
15.6
D
A
All CFM’s are shown at 0.5” w.c. external static pressure.These units have variable speed motors that automatically adjust to provide constant CFM from 0.0” to
0.6” w.c. static pressure. From 0.6” to 1.0” static pressure, CFM is reduced by 2% per 0.1” increase in static. Operation on duct systems with greater than 1.0” w.c.
external static pressure is not recommended.
NOTE: At some settings, LOW COOL and/or LOW HEAT airflow may be lower than what is required to operate an airflow switch on certain models of electronic air
cleaners. Consult the instructions for the electronic air cleaner for further details.
* The ADJ “D” tap should not be used.
