Greenheck Isolation Assembly Instructions (468646) - Manual (Page 7)

7
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Installation Instructions for Restrained Spring Isolators
1. Coordinate the location of each isolator with the appropriate submittal drawing.
2. Remove the attachment bolt and one washer from the top of the leveling nut. Insert leveling nut assembly
into the equipment bracket as shown in diagram. Be sure the top load cap is screwed all the way up to the
leveling nut.
3. Align the fan base isolator holes and center the isolator housings on the leveling bolts. Lower the fan base
onto the housing and mark the isolator housing anchor bolt locations.
4. Raise the fan base off the housings and install the isolator anchors in the floor.
5. Center the spring under the top load cap and lower the equipment. The isolator housing should support the
equipment with approximately the desired floor clearance.
6. Loosely bolt equipment to the isolator using the attachment bolt.
7. Adjust the isolator by turning the leveling nut counterclockwise one turn. Repeat this step to each isolator
leveling nut, one turn at a time, until the housing top plate is centered between the rubber snubbing pads
on the leveling screw on all isolators.
NOTE: If one isolator reaches the desired position before the others, stop turning that leveling nut. It may
be necessary to turn that leveling nut clockwise at some point to return it to the desired position once the
other isolators reach their centered positions.
8. When all isolators have the housing top plate centered between the rubber snubbing pads on the leveling
screw, install the anchor nuts to firmly attach the housing to the floor.
9. Tighten the attachment bolt, thus bolting the isolator to the supported equipment and locks the leveling bolt
against turning.
Attachment bolt
Washers
Equipment bracket
Rubber snubbing pads
Leveling nut
Top load cap
Housing