Cook AVA Bedienungsanleitung PDF herunterladen (Seite 2)

Duct Installation

Efficient fan performance relies on the proper installation

of inlet and discharge ducts. Be sure your fan conforms to

the guidelines below.

Non-Ducted Inlet Clearance

If your fan has an open inlet (no duct work), the fan must

be placed one fan wheel diameter away from walls and

bulkheads.

Free Discharge

Avoid a free discharge into the plenum. This will result in

lost efficiency because it doesn’t allow for a static regain.

Inlet Duct Turns

For ducted inlets, allow at least 3 fan wheel diameters

between duct turns or elbows and the fan inlet.

Rubber-In-Shear Ceiling Isolators

Ceiling Mounted Spring Isolator

Figure 2 - Ceiling Mount Isolators

Non-ducted Inlet Clearance

MIN

1 DIA

Inlet Bell

Air Flow

Correct

Inlet Bell

Fan

Inlet Bell

Air Flow

Incorrect

Fan

Min

1 Dia.

Free Discharge

Correct

Incorrect

Correct

Incorrect

MIN

3 DIA

Inlet Duct Turns

Correct

Incorrect

Min 3

Dia

I l tD tT

Isolation Installation

Floor Mounted Spring Isolators

a. Mount fan and motor on unitary base (if supplied).

b. Elevate fan (or isolation base) to operating height and

insert blocks to hold in position.

c. Position isolators under the fan and vertically align by

inserting leveling bolt through mounting holes in the fan or

the base. The isolator must be installed on a level surface.

d. Adjust the isolators by turning the leveling nut counter

clockwise several turns at a time alternately on each isola-

tor until the fan weight is transferred onto the isolators and

the fan raises uniformly off the blocks. Then remove the

blocks.

e. Turn lock nut onto leveling bolt and secure firmly in place

against the top of the mounting flange or frame.

f. Secure isolators to mounting surface.

Floor Mounted Rubber-In-Shear (RIS) Isolators

a. Mount fan and motor on a unitary isolation base (if sup-

plied).

b. Elevate fan to provide room to insert isolators between the

fan and foundation and block in position.

c. Position isolators under fan and secure bolts.

d. Remove blocks and allow fan to rest on floor. Isolators

must be installed on a level surface (leveling should not be

required).

e. Secure isolators to mounting surface.

Ceiling Mounted Spring and Rubber-in-Shear (RIS) Isola-

tors

a. Elevate fan to operating height and brace.

b. Attach threaded rod to overhead support structure directly

above each mounting hole. Rod should extend to within a

few feet of fan.

c. Attach isolator to end of threaded rod using a nut on each

side of isolator bracket.

d. Insert another section of threaded rod through the fan

mounting hole and isolator.

e. Attach two nuts to threaded rod in isolator.

f. Place adjusting nut and locking nut on threaded rod near

fan mounting bracket.

g. Alternately rotate adjusting nut at each mounting location

until the fan weight is uniformly transferred to the isolators.

Remove bracing.

Note

Extreme vibration is a serious problem that may

cause structural and mechanical failure. To help

vibration and noise from being transferred to the

building, isolators are recommended.

Figure 1 -Floor Mount Isolators

Rubber-In-Shear Isolator

Spring Isolator

1 2 3 4 5 6 7 ... 11 12

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