Standard Duct Connector Installation; Narrow Duct Connector Installation - Nordyne Air Conditioner / Heat Pump Air Handler Owner's Manual & Installation Instructions

If Floor Cavity
"X" is:
7/8" / (22)
2" / (51)
4-1/4" / (108)
6-1/4" / (159)
8-1/4" / (210)
10-1/4" / (260)
12-1/4" / (311)
NOTE: Dimensions shown as Inches / (Millimeter)
Table 2. Duct Connector Sizes

Standard Duct Connector Installation

The standard duct connector is designed for use on ducts
12" in width. NOTE: Ducts narrower than 12" may not
allow suffi cient clearances for this type of installation. See
Narrow Duct Connector section.
1. Center the duct connector in the fl oor opening with
bottom tabs resting on top of the supply air duct.
2. Mark the cut-out area on the supply air duct by tracing
around the connector tabs (Figure 8) of the duct
connector.
3. Remove the duct connector and cut out the marked
area of the supply air duct 1/4" larger the actual cutout
drawn.
4. Install the duct connector back in the fl oor opening
with the bottom tabs extending into the supply air duct.
5. Install the mounting plate (Figure 8) under the back
side of the duct connector. Align the screw holes in
both components.
6. Secure the duct connector and the mounting plate to
the wood fl oor with appropriate size screws.
7. Bend the connector tabs on the bottom of the duct
connector upwards and as tight as possible against
the supply air duct.
Duct
Connector
Figure 8. Standard Duct Connector Installed
10
Duct Connector
Type & Part Number
Standard Duct Screw Down
901987A 904008
901988A 904009
901989A 904010
901990A 904011
901991A 904012
901992A 904013
901993A 904014
Bend tabs
up 90°
Mounting Plate
8. Bend both tabs on the mounting plate up 90° as shown
in Figure 9.
9. Seal all connections with industrial grade sealing tape
or liquid sealant.
NOTE: Requirements for sealing ductwork vary
from region to region. Consult with local codes for
requirements specifi c to your area.
DUCT CONNECTOR
BEND TABS TIGHTLY
AGAINST SUPPLY AIR DUCT
Figure 9. Duct Connector Tabs
Narrow Duct Connectors
This attachment method should be used if there is
insuffi cient clearance to bend the tabs on a standard 12"
duct connector.
1. Score and cut the top of the supply air duct as indicated
in Option 1 or Option 2 (Figure 10). With Option 1
choice, cut out the metal from the shaded area.
2. Fold the two fl aps (Options 1 or 2) up to form the
opening for the duct connector.
3. Install the duct connector with the bottom tabs
extending into the supply air duct.
4. Bend the tabs on the bottom of the duct connector
upwards and as tight as possible against the supply
air duct (Figure 11, page 11).
5. Form the fl aps (Options 1 or 2) up against the duct
connector as tight as possible.
6. Secure the duct connector fl aps to the supply air
duct with staples (3 minimum) or if a 2x block/joist is
not provided, use sheet metal screws (2 minimum).
NOTE: The duct connector tabs may be attached to
the air duct with sheet metal screws or other suitable
fasteners as long as the duct connector and the air
duct are securely attached.
OPTION 1
Remove
this
Flap
Remove
this
Flap
Figure 10. Narrow Air Duct Openings
SUPPLY
AIR DUCT
OPTION 2
Supply
Cut Here
Air Duct
Cut Here