Nordyne E3 Series Owner's Manual And Installation Instructions page 11

Preparing Floor Opening(s)
1. Mark fl oor opening(s) as shown in Figure
6. Provide minimum clearances at rear
and right side walls of closet or alcove for
installation of furnace and wiring.
2. Cut fl oor opening on outside edge of marked
line so that opening is slightly larger than
area marked.
3. Additional provisions may be necessary
for optional air conditioning or heat pump
if refrigerant lines are installed elsewhere
than at the front of the furnace.
4. The refrigerant and entrance supply opening
dimensions may be adjusted ± 1/2".
Installing Duct Connector
NOTE: The duct connector is designed for use
on ducts down to 12" wide. On typical ducts,
the fi nger tab duct connector may be installed
using Method B. On narrow ducts, there may be
insuffi cient clearance to bend the tabs on two
sides of the fi nger tab duct connector. In such
2-3/8" MIN
(60 mm)
17"
(432 mm)
23-3/4"
(603 mm)
3-3/4"
(95 mm)
3/4"
(19 mm)
Furnace Outer
Door
Figure 6. Downfl ow Floor Cutout Locations (nominal dimensions)
fl oor cavity is:
English
7/8"
2"
4 1/4"
6 1/4"
8 1/4"
10 1/4"
12 1/4"
cases, use Method C or D. For screw down duct
connector use method E. For Platinum models
always use method A.
Method A - Platinum Series
NOTE: Flex duct used must have a minimum
temperature rating of 200
other applicable codes and standards.
1. Place duct connector through opening in
fl oor. See Figure 9.
2. Connect 14" supply duct.
REAR WALL OF ENCLOSURE
Center Line
14-1/2"
(368 mm)
(368 mm)
Optional Supply Wire
Entrance
A/C Or HP
(Not required
Optional
for Platinum) Refrigerant
Line
4-1/4 " 5 " 3-3/8
(127 mm)
(108 mm)
(86 mm)
10 "
(254 mm)
20 "
(508 mm)
If "X" Use Duct Connector
Model Part Number
Metric Finger
(mm) Tab
22 901987
51 901988
108 901989
159 901990
210 901991
260 901992
311 901993
Table 4. Floor Cavity Sizes
14-1/2"
16-5/8"
(422 mm)
3" (76 mm)
"
6-1/4
"
(159 mm)
Screw
Down
904008
904009
904010
904011
904012
904013
904014
F and meet all
°
Furnace
Outline
11