Chapter 2: Prerequisites
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7
Proper blower selection can be determined from these exhaust requirements and
the total system static pressure loss. The enclosure must be connected to a
dedicated blower, a house exhaust system or a dedicated filtered exhauster, such as
a Labconco FilterMate. When using multiple FilterMates, the airflow must be
balanced.
Labconco offers accessory remote blowers listed next and in Chapter 7.
Remote Blowers (Roof-Mounted)
A).
1/4 hp direct drive. Corrosion-resistant epoxy-coated steel housing and wheel.
Blower inlet is 6" ID. Outlet dimensions are a rectangular 4.25" x 7.38" OD. See
dimensional data in Chapter 7.
CFM @ Static Pressure – Inches of H
2
O
S.P.
0.0"
0.125"
0.25"
0.50"
0.75"
0.87"
CFM
595
560
515
420
300
167
Catalog #
Description
Shipping
Wt. lbs./kg
4863500
Remote Blower, 115 volts, 60 Hz, 4.4 amps
35/16
4863501
Remote Blower, 115/230 volts, 50 Hz, 5.6/2.8 amps
35/16
7053501
Explosion-Proof Remote Blower, 115 volts, 60 Hz,
4.4 amps
40/18
B).
1/4 hp or 1/3 hp belt drive with adjustable sheave to change RPM. Corrosion-
resistant epoxy-coated steel housing and wheel. Blower inlet is 10.87" ID. Outlet
dimensions are a rectangular 5.5" x 10" OD. See dimensional data in Chapter 7.
Catalog #
HP
Description
CFM@RPM Ranges at Static Pressure (in H
2
0)
Std.
EP
.25"
.38"
.50"
.62"
.75"
.88"
1.00"
7068200
1/4
Remote Blower,
115V, 60 Hz,
4.4 A
540@800
410@800
350@870
390@970
430@1060
7068300
1/4
Explosion Proof
Blower 115V,
60 Hz, 4.5 A
720@950
760@1050
710@1060
620@1060
7068400
1/3
Remote Blower,
115V, 60 Hz,
6.1 A
760@1050
710@1060
620@1060
430@1060
460@1150
500@1220
7068500
1/3
Explosion Proof
Blower, 115V,
60 Hz, 6.4 A
850@1130
825@1160
790@1190
770@1220
740@1260
640@1260
If the enclosure is connected directly to a house exhaust system, an adjustable
damper (or valve) must be installed to control the airflow properly. This is equally
important when a house exhaust system is controlling multiple balance enclosures
or ventilation stations. See Chapter 7 for ordering an accessory adjustable damper.
