
1
8
Step 12C
From the inside attach each of the Tension Springs to the hole in the upper plate of the Main Frame using
the end of the spring with the loop, then stretch the spring and insert the other end of the spring into the hole
drilled in the door in the previous step.
See Figure 12C
Figure 12C
Installation Instructions
Chapter 3
Hole in upper plate
Drilled Hole in Damper Door
Tension Spring
Step 13
Place all 4 cone sections on a flat surface with the tabs from one facing the slots of the next.
See Figure 13A
.
Curl up the tab end of the first cone section and insert the tabs up into the slots in the next cone section, a
mallet may be needed to seat the slots over the tabs completely.
See Figure 13B
. Repeat this step until all
4 cone sections are connected and laying flat
3
.3 Cone Installation
Figure 13A
Figure 13B