Greenheck Fan PN 471755 manual Typical Installation, Support Braces, Pre-Starting Checks

WARNING

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

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.

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.

Step 3 Install Weatherhood

Wall	Optional 90º
	Weatherhood

Wall

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.

Filtered Supply Wall Housing Installation

Step 1 Install Housing

INTERIOR Wall EXTERIOR

Airflow

Mounting

Angles

Temporary	Wall
Brace

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

500 lb. load per support

750 lb. load per support

45º Wall

			Wall
	45º
500 lb. load		750 lb. load
		per support
per support

Pre-Starting 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

4 Sidewall Propeller Fans • Exhaust, Supply and Filtered Supply

®