12
Figure 16. Installation of Duct Connector
d. Cut out duct opening 1/4” larger than area
marked.
INSTALL FURNACE MOUNTING PLATE
a. Place mounting plate (supplied within duct
connector) at rear of the fl oor opening (See
Figure 15).
INSTALLING PLATINUM SERIES 14” ROUND
DUCT CONNECTOR
a. Place duct connector through the fl oor open-
ing. (See Figure 15).
b. Secure duct connector to fl oor.
INSTALLING SCREW DOWN DUCT CON-
NECTOR
a. Apply a bead of caulking, mastic, or other
approved sealant around bottom side of 1/2”
fl ange and restrictor plate, when applicable.
b. Locate the duct connector over duct and
carefully lower screw down duct connector
into place.
c. Once duct connector is located on duct,
temporarily hold in place while fastening duct
connector to the fl oor using fl at head screws
or nails. Be sure fl anges of duct connector
stay in contact with the duct.
d. Screw plenum to duct making sure a seal is
made between the duct and the duct con-
nector. Additional screws may be added if
required.
e. Cut away duct along edge of fl ange 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 fl oor opening
with bottom tabs extending through the duct
opening. (See Figure 15)
b. Secure duct connector to fl oor.
c. Bend bottom tabs under and up tightly against
the supply air duct (See Figure 16).
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 insuffi cient
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 17).
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 insuffi cient clearance prevents bending
of the duct connector tabs at the side(s) of the
duct. (See Figure 18).
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 fl ap “B” up, (See Step 3).
3. At the front-to-back of duct run (Area “A”),
bend the duct tabs and secure them directly
to the duct.
4. At Area “B”, bend the duct tabs up and
back over, around the duct connector, (See
Step 3).
5. Fold/form the duct fl ap against the side of the
duct connector and attach as shown, (See
Step 4). Use three (3) staples (minimum) on
each duct fl ap OR, if a 2X block/joist is not
provided, use two (2) sheet metal screws
(minimum) on each duct fl ap. An alternate
attachment method is acceptable, as long
as the duct connector is securely attached.
6. Tape the duct fl ap edges with an approved
tape for a leak-free joint.
Duct
Duct Connector
Narrow Duct
Figure 17.
TABS
TABS
DUCT
DUCT
1. INSERT DUCT CONNECTOR INTO
DUCT CUT-OUT.
2. BEND BOTTOM TABS OVER
AND ONTO THE UNDERNEATH
DUCT SERVICE.
