nector. Additional screws may be added if required.
e. Cut away along edge of flange allowing the center to drop into the duct. Remove section of duct with caution, as edges will be sharp.
INSTALLING FINGER TABBED DUCT CON- NECTORS
a.Place duct connector through the floor open- ing with bottom tabs extending through the duct opening. (See Figure 9)
b.Secure duct connector to floor.
c.Bend bottom tabs under and up tightly against the supply air duct (See Figure 10).
NOTE: The duct connector is designed for use on ducts 12" in width. When using the connec- tor on 12" wide ducts, there may be insufficient clearance to bend the tabs on two sides of the duct connector. In such cases the tabs may be
attached to the sides of the duct by using sheet metal screws or other suitable fasteners. (See Figure 11).
If sealant, mastic, or tape is used to provide a better seal, it should be approved by applicable national or local codes.
ALTERNATE ATTACHMENT METHODS
This procedure may also be used to install a furnace duct connector to narrow metal ductwork where insufficient clearance prevents bending of the duct connector tabs at the side(s) of the duct. (See Figure 12).
1.Score and cut the top of the metal duct as indicated in Step 1 or Step 2. With Step 1 choice, also cut out the metal from the shaded area “A”.
2.Fold the duct flap “B” up, (See Step 3).
TABS | TABS |
DUCT | DUCT |
1. INSERT DUCT PLENUM CONNECTOR | 2. BEND BOTTOM TABS OVER |
INTO DUCT | AND ONTO THE UNDERNEATH |
| DUCT SERVICE. |
Figure 10. Installation of Duct Connector
Duct Connector
Duct
Narrow Duct
| Figure 11. Narrow Duct Installation | |
|
|
|
STEP 1. |
| STEP 2. |
| Fold Back Flap "B" | Fold Back Flap"B" |
|
| |
Cut- Out | "B" | |
Area "A" | ||
"A" | ||
"A" | ||
| "B" |
Cut- Out Area"A"
Cut Lines
"B"
"B"
Duct
Top of Duct
Fold Back Flap "B"
Bend Duct Connector Tabs Up and Over- (along length of duct)
Fold Back Flap"B"
Staple Folded Duct
Flap (typ) to side of Duct
Connector
STEP 3.
Duct | Duct |
| |
Flap "B" | STEP 4. | ||
|
Duct
Figure 12. Alternate Installation
12
