Greenheck Hinge Kit Sizes 220-540 (462865) User Manual

Page 2

Hinge Kit

2. Place reinforcing assembly on the curb cap; loosely

install the four screws removed in Step 1.
If cap has factory holes that line up with hinge
holes, go to Step 3. If cap does not have matching
holes from the factory, mark the remaining hole
locations for drilling. Drill a 5/16 inch hole in the
curb cap at these locations.

3. Attach each top hinge and reinforcing assembly to

the curb cap with 5/16 inch - 18 x 1 inch long weld-
bolt screws and 5/16 inch spinlock nuts. Refer to
FIGURE 2.

NOTE: The stop cable is installed to the top hinge
under the nut furthest from the pivot point. Secure
the cable with the 5/16 inch x 1-1/4 inch fender
washer. Allow the opposite end to hang loose until
Step 8. FIGURE 2

4. Set unit on roof curb or hinge base. Center curb cap

on the curb or hinge base so there is equal space
around the perimeter. If curb cap has a hinge base,
align hold down screws with threaded holes and
loosely install thumb screws.
Refer to FIGURE 4.

5. Attach each lower hinge to the upper hinge with

the 1/2 inch - 13 x 2 inch bolt, 1/2 inch washers
and 1/2 inch nylock nut. Attach equal number of
hinge spacers to bottom hinge with 1/4 inch - 20 x
1-1/4 inch bolts and 1/4 inch nut to take up the gap
between the top and bottom hinges. THE NUMBER
OF SPACERS WILL VARY FROM UNIT TO UNIT.
Refer to FIGURE 3.

FIGURE 2

FIGURE 3 - Reinforcing Assembly

Weld Bolt
5/16-18 x 1

Fender Washer
5/16-18 x 1

Curb Cap

Nut 5/16-18

Top Hinge

Reinforcing
Assembly
Plate

Steps 2 and 3

Step 4

Restaining Cable

Bolt
1/2-13 x 2

Weld Bolt
5/16-18 x 1

Flat Washer
1/2 x 1-1/16

Bolt
1/4 x 20 x 1¼

Nut 5/16-18

Nut 1/2-13

Nut 1/4-20

Inside of curb

Top
Hinge

Hinge
Frame

Fan Curb
Cap

Bottom Hinge

Hinge Spacer