Prestart-up checks, Typical installation, Support braces – Greenheck Sidewall Propeller Fans (471755) User Manual

Page 4: Filtered supply wall housing installation, Danger

Sidewall Propeller Fans

Step 3 Install Weatherhood

Position weatherhood over
end of wall housing and fasten
through mounting holes with
self-tapping screws. Caulk,
ﬂash and complete electrical
hook-up to ﬁnish installation.

Prestart-up Checks

Check all fasteners and setscrews for tightness. This
is especially important for bearing setscrews.

The propeller should rotate freely and not rub on the
fan panel venturi. Rotation direction of the propeller
should be checked by momentarily turning the unit
on. Propeller blade should cup and throw the air when
rotating in the correct rotation as shown in the ﬁgure
below. Rotation should be in the same direction as the
rotation decal afﬁxed to the unit.

For 3-phase installations, fan rotation can be reversed
by simply interchanging any two of the three electrical
leads. For single-phase installations follow the wiring
diagram located on the motor.

For belt drive fans, the adjustable motor pulley is
preset at the factory for the speciﬁed fan RPM. Fan
speed can be increased by closing or decreased by
opening the adjustable pulley. Two or three groove
variable pitch pulleys must be adjusted an equal
number of turns open. Any increase in fan speed
represents a substantial increase in horsepower
required from the motor. Always check motor load
amperage and compare to nameplate rating when
changing fan speed.

Typical Installation

Move fan to the desired location and determine the
method by which the fan is to be mounted as shown
in Figures 1-4 shown on page 3. Optional wall mount
housings (Figure 1) and wall mount collars (Figure 2)
provide a convenient means of mounting sidewall
propeller fans while maintaining the proper distance
between propeller and damper.

Attach the fan by inserting a suitable fastener through
each of the prepunched mounting holes in the fan
panel. Care should be taken not to bend or distort the
fan panel or drive components during installation.

Support Braces

Wall Housing sizes 42 and larger with heavy motors
and all Filtered Supply Wall Housings need additional
bracing.

Filtered Supply Wall Housing Installation

Step 1 Install Housing

Install housing through wall
opening from
outside.

Temporarily brace
end of unit until
permanent support
braces are installed.

Secure through
prepunched holes in
angles with suitable
fasteners.

Step 2 Install Support Braces

Choose method of
support. Attach support
to end of unit (above
or below housing) with
rods, cable, angle, etc.
(supplied by others) as
shown.

Vertical braces must
carry a minimum load of
500 pounds per support,
and angled (45°) braces a
minimum of 750 pounds
per support based on
two supports.

Optional 90º
Weatherhood

all

INTERIOR

EXTERIOR

all

Airﬂow

Mounting
Angles

Temporary
Brace

all

500 lb. load
per support

750 lb. load
per support

45º

all

DANGER

Always disconnect, lock and tag power source before
installing or servicing. Failure to disconnect power
source can result in fire, shock or serious injury.

DANGER

Pour écarter les risques d’incendie, de choc
électrique ou de blessure grave, veiller à toujours
débrancher, verrouiller et étiqueter la source de
courant avant l’installation ou l’entretien.