Specification Sheet

307
Fan
Size
A
Sq
B C D E F
Damper
O.D. Sq
Flange
24 30 2 7 1/2 1 1/4 22 26 28 1/2
30 36 2 7 1/2 1 1/4 22 26 34 1/2
36 42 2 7 1/2 1 1/4 22 26 40 1/2
42 48 2 7 1/2 1 1/4 22 26 46 1/2
48 54 2 7 1/2 1 1/4 22 26 52 1/2
54 60 2 7 1/2 1 1/4 22 26 58 1/2
60 66 2 7 1/2 1 1/4 24 28 64 1/2
Dimensions shown in inches.
MODEL L2 - CONSTRUCTION LEVEL 2
Application
Models L2E (exhaust) and L2S (supply) are high capacity wall mounted
belt driven propeller fans rated from 5000 to 47,000 CFM and to .75" w.g.
static pressure. Their primary application is the exhaust of large volumes
of ventilation air from commercial and light industrial buildings such as
manufacturing and assembly plants, warehouses, parking garages, gym-
nasiums, equipment rooms, distribution centers and OEM applications.
Wall mounting provides an easy and economical installation. All neces-
sary accessories are available. Belt driven fans provide large volumes
of air at low fan speed and low noise levels and afford quick, easy
performance adjustments.
See Model L - Construction level 3 for higher static pressures and
heavier construction designs or models LC for your lighter duty ventila-
tion requirements.
Construction/Specication Checklist
Belt Drive, Wall Exhaust (or Supply) Propeller Fan shall be provided
as follows:
CERTIFICATIONS: Fans shall be AMCA Licensed for air and sound
performance. Fans shall be UL and cUL 705 listed for electrical safety
and reliability (Optional).
PANEL ASSEMBLY: Panels shall be heavy-gauge G90 galvanized
(optional aluminum) with spun one piece venturi. Motor and bearing
plate shall be a minimum of 10 gauge G90 galvanized steel. Panel end
support frame assembly shall be of welded, not bolted, construction
with pre-punched mounting holes for easy installation.
PROPELLER: Propellers shall be six-bladed, die-formed, minimum
16 gauge, G90 galvanized steel bolted to a welded, structural steel
hub plate and keyed to the fan shaft. Blades shall incorporate multiple
laminations for 3 horsepower motors and larger. Propeller assembly
shall be statically balanced.
DRIVES: All sheaves shall be sized to a minimum 150% of driven
horsepower, machined cast iron adjustable pitch (through 3HP), keyed to
both the motor and fan shaft. Fan shaft shall be precision turned, ground
and polished steel. Belts shall be nonstatic oil and heat resistant V-belts.
BEARINGS: All bearings shall be self-aligning cast iron pillow block
type with relube tting and of the air handling design. Bearing design
shall be for a minimum of L-50 200,000 hour average life.
MOTORS: Permanently sealed ball bearing type furnished to the
specied voltage, phase and enclosure. All motors shall be mounted
and factory run tested.
Fan
Size
Material (Ga. or inches th.)
Max
Shaft
Diameter
(in.)
Max
Motor
Frame
Size
Avg.
Weight
(lbs.)
Fan
Panel
Drive
Frame
Motor & Bearing
Supports
Propeller
Spider Blade
Galv Alum
Steel Steel Alum
24 18 10 10 1/4 1/4 16 .080 1 182T 180
30 16 10 10 1/4 1/4 16 .080 1 182T 180
36 16 10 10 1/4 1/4 16 .080 1 3/16 184T 215
42 16 10 10 1/4 3/8 16 .080 1 3/16 184T 235
48 16 10 10 1/4 3/8 16 .080 1 3/16 184T 300
54 14 10 10 1/4 3/8 16 .080 1 3/16 184T 400
60 14 10 10 1/4 3/8 16 .080 1 3/16 184T 490
R
®
AIR
MOVEMENT
AND CONTROL
ASSOCIATION
INTERNATIONAL, INC.
AIR
PERFORMANCE
SOUND
and
Standard 705
(Optional)
Motor Service Factor
Motor service factors are utilized in some performance selections shown. This is a safe and common industry practice that provides more per-
formance for the investment. BHP is shown at the maximum catalog performance point. BHP at all other static pressures listed is less than that
shown, in most cases substantially less. Because the motors are in the air stream there are no negative effects on motor life. Explosion proof
and 2 speed motor applications are recommended at or below their nominal BHP levels. If desired, pick the next higher horsepower to eliminate
this service factor usage. Refer to the Optisizer Fan Selection Program for actual BHP at any performance point.
DIMENSIONS
2 year fan housing warranty, 1 year motor warranty
MODELS LCE/LCS, L2E/L2S, L3E/L3S
BELT DRIVE SIDEWALL PROPELLER FANS