Page 20
Suggested Minimum Dryer Make-up Air Requirements
Dryer
Dryer Pocket
Maximum Air Flow Duct Size For
Required Make-up
Model
Capacity
Rate per Pocket Service Connection Air Area per Pocket
lb
kg
cfm
m3/h inch mm
sq. in. cm2
C 30
30
13.6
700
1190
8 203
135
871
C 30 E/S
30
13.6
400
680
6 153
77
497
C 30 ST
30
13.6
450
765
6 153
87
561
C 50
50
22.7
800
1360
8 203
154
994
C 50 E/S
50
22.7
450
765
6 153
87
561
C 75
75
34
1000
1700
8 203
192
1239
C 75 E/S
75
34
536
911
6 153
103
665
C 75 ST
75
34
1000
1700
12 305
192
1239
HD80
80
36.3
1465
2490
10 254
282
1819
C 110
110
50
2200
3740
12 305
422
2723
C 110 E/S
110
50
850
1445
8 203
163
1052
C 125
125
56.7
2000
3400
12 305
384
2477
C 150
150
68
2250
3825
12 305
432
2787
HD175
175
79.4
2780
4726
12 305
534
3445
HD190
190
86.2
3000
5100
12 305
576
3716
WMC/HD20
20
9.1
450
765
6 153
87
561
WMC/HD30
30
13.6
625
1063
8 203
120
774
WMC/HD50
50
22.7
700
1190
8 203
135
871
WMC/HD75
75
34
750
1275
8 203
144
929
Notes:
1) The Model C 30 ST has 2 pockets per dryer, each pocket has the above listed characteristics;
each pocket is exhausted separately with a 6" (153mm) duct.
2) The Model C 75 ST has 2 pockets per dryer, each pocket has the above listed characteristics;
both pockets have one 8" (203mm) exhaust manifolded into one 12" (305mm) exhaust duct for
exhaust connection.
3) For the C 30 ST and the C 75 ST Models, the Required Make-up Air Area shown in the table
should be doubled since it is shown per pocket,only.
4) E/S indicates an Energy Saving Model.