High Volume, Low Speed Ceiling Fans
4
®
B
A
3 FT. CLEARANCE AROUND BLADES
2X FAN DIAMETER
FROM HVAC
MINIMUM 10 FT. ABOVE
FINISHED FLOOR
HVAC
DIFFUSER
WHEN FULL DIFFUSER OUTLET
IS BELOW HVLS FAN,
HVLS FAN MUST BE 1X FAN DIAMETER AWAY
3 FT. CLEARANCE AROUND BLADES
Minimum Spacing Requirements
Minimum Spacing From Center of Fan (ft.)
Fan Size (ft.)
A
B
16
24
48
20
30
60
24
36
72
Pre-Installation Checks
IMPORTANT:
Consult all applicable national, state
and local codes to ensure that all necessary code
requirements are met. It is the sole responsibility of the
installer to ensure compliance with applicable codes.
Prior to installing the fan, perform each of the following
checks:
1. Verify that fan components are undamaged. Do not
install or operate any damaged fan components,
fans, or fan accessories. Failure to comply with
this instruction may result in property damage,
personal injury and/or death.
2. Verify that the fan is to be installed in a location
where the airfoils will be a minimum of 10 ft.
above the finished floor with a minimum of
3 ft. of horizontal and vertical clearance to any
obstructions.
3. Verify that the fan is to be installed in a location
where the center of the fan is a minimum of 1.5 fan
diameters away from building walls and corners.
4. For best performance, the fan must be installed
with a two fan diameter minimum clearance to
radiant heaters and HVAC system discharges or
intakes.
5. Check that the fan will not be mounted in a
location near overhead doors or other building
openings where gusts of wind may occur. Fan
should not be installed or operated in locations
where wind is present.
6. If the building is equipped with a fire sprinkler
system, verify that the placement of the fan will
not interfere with correct sprinkler operation and
that the fan installation complies with all national,
state and local codes. For NFPA 13 compliance,
fan must be installed in the center of four adjacent
sprinklers with at least 3 ft. of vertical clearance
between the fan and sprinkler deflectors. Fan must
also be interlocked to shut down upon receiving a
waterflow signal from the building’s alarm system.
7. Check to see if the intended placement of the fan
is directly below any building lights or skylights. If
possible, avoid installing fan directly below a light
source to prevent a strobing effect that can be
caused by fan rotation.
8. If the building has a mezzanine or other elevated
spaces that may be occupied by people, verify
that no component of the fan can be reached
from the highest level or deck. The fan must be
positioned so that the tips of the airfoils are a
minimum of 3 ft. away from the furthest point
that a person could reach or otherwise come in
contact, to prevent injury.
9. If the fan is to be mounted in an area where
materials or equipment may be elevated into its
path, ensure that the floor is marked or painted
to alert personnel of the overhead location of the
fan(s).
10. Before installation, it is important to verify that the
mounting surface will bear the operating weight
and maximum torque (twisting force) of the unit.
The Structural Engineer of Record (SEOR) must
perform a thorough evaluation of the mounting
structure and determine all final mounting
requirements before the fan is installed. It is the
sole responsibility of the installer to ensure that the
mounting structure and fan installation method are
adequate for safe operation of the fan.
Fan Size
(ft.)
DS-M3
*Max. Fan
Weight (lbs)
Max Torque
(ft∙lbf)
16
192
36.7
20
201
50.6
24
210
54.0
*Maximum weight is shown in pounds and includes all available
options, actual fan weight may be less.
General Information
