Standard Duct Connector Installation - Nordyne M1B, M1G, M1M Installation Instructions Manual

20"
14 1/2"
C L
REAR WALL OF CLOSET OR ALCOVE
2 1/4"
FLOOR CUT-OUT
FOR STANDARD
DUCT CONNECTORS
CUT-OUT FOR
OPTIONAL
C L
C L
COOLING COIL
C L
1 3/4"
ALT FUEL-LINE
ENTRY 1 1/4" Dia.
3/4"
1 7/8"
2 7/8"
Figure 6. Cut-Out Dimensions for
Standard Duct Connectors
20"
C L
REAR WALL OF CLOSET OR ALCOVE
CUT-OUT FOR
C L
C L
OPTIONAL
COOLING COIL
C L
1 3/4"
ALT FUEL-LINE
ENTRY 1 1/4" Dia.
3/4"
1 7/8"
2 7/8"
Figure 7. Cut-Out Dimensions for
Round Duct Connectors
Hole for
Gas Line
Duct
Connector
Figure 8. Standard Duct Connector In-
stalled
2 3/4"
C L
1 3/4"
C L
3/4"
C L
2"
FUEL
LINE
FURNACE
OUTER
DOOR
Note: Dimensions shown as Inches / (Millimeter)

Standard Duct Connector Installation

The standard duct connector is designed for use
10"
on ducts 12" in width. However ducts narrower
than 12" may not allow suffi cient clearances
for this type of installation. For an alternate
installation method, see page 10.
1. Center the duct connector in the fl oor opening
C L
with bottom tabs resting on top of the supply
air duct.
2. Mark the cut-out area on the supply air duct by
1 3/4"
tracing around the connector tabs (Figure 8) of the
C L
3/4"
duct connector.
C L
3. Remove the duct connector and cut out the
2"
FUEL
marked area of the supply air duct 1/4" larger
LINE
FURNACE
the actual cutout drawn.
OUTER
DOOR
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
Bend tabs
plate to the wood fl oor with appropriate size
up 90°
screws.
7. Bend the connector tabs on the bottom of
the duct connector upwards and as tight as
Mounting Plate
possible against the supply air duct.
8. Bend both tabs on the mounting plate up 90°.
See Figure 10, (page 10)
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.
FLOOR OPENING
"X"
SUPPLY AIR DUCT
FLOOR
CAVITY
Figure 9. Floor Cavity
Duct Connector
If Floor Cavity
Type & Part Number
"X" is:
Standard Duct
7/8" / (22) 901987A
2" / (51) 901988A
4-1/4" / (108) 901989A
6-1/4" / (159) 901990A
8-1/4" / (210) 901991A
10-1/4" / (260) 901992A
12-1/4" / (311) 901993A
Table 3. Duct Connector Sizes
Round Duct
904008
904009
904010
904011
904012
904013
904014
9