Heated make-up Air Filter Hood
Without Exhaust Fire Damper
FN-B-MC
General Description
The filter hood is used on all cooking equipment. The
hood is ceiling hung with a recommended mounting
height of 6’6” (1981 mm) from the finished floor.
The hood is finished in a No. 4 stainless steel finish on
all exposed sides. The box canopy can be tapered to
10” (254 mm) at the front. The filter hood is available
with fluorescent or incandescent lights. The tempered
makeup air is discharged down, through a perforated
stainless steel panel located on the front of the filter
hood.
Efficiency
The hood is equipped with high efficiency UL/ULC
listed baffle grease filters. The exhaust air accelerates
through multiple turns within the baffle filter.
Centrifugal force causes grease dirt and lint to deposit
on the baffles. The liquefied grease drains down the
baffles, along the grease trough, and into a grease cup.
Exhaust and Supply
The total exhaust to properly ventilate commercial
kitchen is directly related to the type of cooking
equipment under the filter hood. An exhaust flow rate
of between 150 to 400 CFM/ft (233 to 620 l/s/m) is
satisfactory for most installations. Directing the make
up air down, from the front of the hood provides
continuous air movement, directed towards the cook.
Model FN-B-MC
Engineering Data
Exhaust Flow Rate (EFR*)
Ventilator
Length
(ft)
(mm)
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
10.5
11.0
11.5
12.0
12.5
13.0
13.5
14.0
14.5
15.0
914
1067
1219
1372
1524
1676
1829
1981
2134
2286
2438
2591
2743
2896
3048
3200
3353
3505
3658
3810
3962
4115
4267
4420
4572
Exhaust @
300 CFM/ft (465 l/s/m)
(CFM)
Exh.
Exh.
(l/s)
900
1050
1200
1350
1500
1650
1800
1950
2100
2250
2400
2550
2700
2850
3000
3150
3300
3450
3600
3750
3900
4050
4200
4350
4500
427
498
569
640
711
782
853
924
995
1066
1137
1209
1280
1351
1422
1493
1564
1635
1706
1777
1848
1919
1991
2062
2133
Exh.
Duct
10 in x
8
9
11
12.5
13.5
14.5
16
18
19
20
21.5
22.5
25
26
27
28
29
31.5
32.5
34
35
36
38
39
40.5
Exh.
Duct
254 in x
203
229
279
318
343
368
406
457
483
508
546
572
635
660
686
711
737
800
826
864
889
914
965
991
1029
Supply @
240 CFM/ft (372 l/s/m)
(80% Exhaust)
(CFM)
Sup.
Sup.
(l/s)
720
840
960
1080
1200
1320
1440
1560
1680
1800
1920
2040
2160
2280
2400
2520
2640
2760
2880
3000
3120
3240
3360
3480
3600
341
398
455
512
569
626
682
739
796
853
910
967
1024
1080
1137
1194
1251
1308
1365
1422
1479
1536
1592
1649
1706
Sup.
Duct
10 in x
14
16
16
24
24
24
28
28
32
32
36
36
2 @ 24
2 @ 24
2 @ 24
2 @ 24
2 @ 24
2 @ 24
2 @ 28
2 @ 28
2 @ 28
2 @ 28
2 @ 32
2 @ 32
2 @ 32
Exhaust @
350 CFM/ft (544 l/s/m)
Sup.
Duct
254 in x
356
406
406
610
610
610
711
711
813
813
914
914
2 @ 610
2 @ 610
2 @ 610
2 @ 610
2 @ 610
2 @ 610
2 @ 711
2 @ 711
2 @ 711
2 @ 711
2 @ 813
2 @ 813
2 @ 813
(CFM)
Exh.
Exh.
(l/s)
1050
1225
1400
1575
1750
1925
2100
2275
2450
2625
2800
2975
3150
3325
3500
3675
3850
4025
4200
4375
4550
4725
4900
5075
5250
498
581
664
746
829
912
995
1078
1161
1244
1327
1410
1493
1576
1659
1742
1825
1908
1991
2073
2156
2239
2322
2405
2488
Exh.
Duct
10 in x
9
10
12.5
13.5
16
17
18
20
21.5
23.5
25
26
28
30.5
31.5
32.5
34
36
37
39
40.5
29.5
31.5
32
33.5
Exh.
Duct
254 in x
229
254
318
343
406
432
457
508
546
597
635
660
711
775
800
826
864
914
940
991
1029
749
800
813
851
Supply @
280 CFM/ft (435 l/s/m)
(80% of Exhaust)
(CFM)
Sup.
Sup.
(l/s)
840
980
1120
1260
1400
1540
1680
1820
1960
2100
2240
2380
2520
2660
2800
2940
3080
3220
3360
3500
3640
3780
3920
4060
4200
398
464
531
597
664
730
796
863
929
995
1062
1128
1194
1261
1327
1393
1460
1526
1592
1659
1725
1791
1858
1924
1991
Sup.
Duct
10 in x
14
16
24
24
24
28
28
32
36
36
2 @ 24
2 @ 24
2 @ 24
2 @ 24
2 @ 24
2 @ 28
2 @ 28
2 @ 28
2 @ 28
2 @ 32
2 @ 32
2 @ 32
2 @ 36
2 @ 36
2 @ 36
Sup.
Duct
254 in x
356
406
610
610
610
713
713
813
914
914
2 @ 610
2 @ 610
2 @ 610
2 @ 610
2 @ 610
2 @ 711
2 @ 711
2 @ 711
2 @ 711
2 @ 813
2 @ 813
2 @ 813
2 @ 914
2 @ 914
2 @ 914
* Refer to the Ventilator Engineering Manual for Exhaust Volumes and Flow rates not shown above.
Exhaust Flow Rate
CFM/ft
300
350
400
Supply Air Rate
All Flow Rates
Exhaust Static Pressure
(in W.C.)
0.35
0.45
0.55
Supply static Pressure
(“W.C.)
0.20
Notes:
•
Exhaust duct can be located anywhere along length
of the filter hood.
•
For lengths greater than 14’ (4270 mm) join
multiple sections together.
Spring Air Systems Model No. FN-B-MC Hood
Specification
The filter hood shall be a Spring Air Systems model no.
FN-B-MC, box canopy, high efficiency, filter hood, with
make up air plenum, stainless steel perforated front, down
discharge, UL/ULC listed, and built in accordance with the
NFPA-96.
The unit casing shall be a minimum 18 GA. Stainless steel
with all exposed sides no. 4 finish. The filter hood shall
include UL/ULC listed baffle grease filters mounted in an
integral stainless steel rack inclined at 45 degrees. The
filter rack shall include a full length stainless steel grease
gutter and grease cup. The make up air plenum shall be
insulated with 1” attenuating foam.. The hood shall have
___ fluorescent/incandescent light evenly spaced along the
length of the hood.
Engineering Data
Item Number
______________________
Model Number
FN-B-MC______________
Number of Sections
______________________
Hood Length
______________________
Hood Width
______________________
Lights
______________________
Exhaust Volume
______________________
No. Of Duct Collars
______________________
Size of Duct Collars
______________________
Static Pressure
______________________
Supply Volume
______________________
No. Of Duct Collars
______________________
Size Of Duct Collar
______________________
Static Pressure
______________________
FNBMC
Spring Air Systems Inc. Phone: 905-338-2999, Fax: 905-338-0179,e-mail: [email protected]