Bottom Panel Removal; Downfl Ow Installation; Installation On A Concrete Slab - Nordyne 045C-23ASA Installation Instructions Manual

Bottom Panel Removal

To remove the bottom panel (Figure 8) from the upfl ow
furnace, perform the following steps:
1. Remove the blower door (1) from bottom of furnace.
2. Disconnect the wiring harness (2) from the
connector.
3. Remove two screws (3) securing the blower assembly
(4) to the furnace.
4. Carefully pull the blower assembly (4) out thru the
front of the furnace.
5. Remove all screws (5) securing bottom panel (6) to
bottom of furnace and front brace (7).
6. Lift up and slide bottom panel (6) out through front of
furnace.
7. Reinstall the blower assembly (4) in reverse order it
was removed.
1
6
3
4
Figure 8. Removal of Bottom Panel
10
Bottom Panel
7
Blower Assembly
3
Downfl ow Installation
The *SK series gas furnace is certifi ed for installation on
combustible fl ooring. This furnace must not be installed
directly on carpeting, tile, or any combustible material
other than wood fl ooring. For venting guidelines and
specifi cations, see Venting Requirements section (page
12).
Failure to install the downfl ow sub-base kit
may result in fi re, property damage or personal
injury.
To install the furnace on combustible fl ooring, a special
sub-base is required. Downfl ow sub-base kits are factory
supplied accessories and are listed according to the cabinet
letter of the furnace. For 'A' size cabinets use Sub-Base
kit #902974 only. For 'B', 'C', and 'D' size cabinets use
Kit #904911. Please follow the instructions provided
with the kit.
The downfl ow sub-base kit must not be installed
directly on carpeting, tile, or any combustible
material other than wood fl ooring.
A downfl ow sub-base kit is not necessary if the furnace
is installed on a factory or site-built cased air conditioning
5
coil. However, the plenum attached to the coil casing
must be installed so that its surfaces are at least 1" from
combustible construction.

Installation on a concrete slab.

1. Create an opening in the fl oor according to the
dimensions in Figure 9.
2. Position the plenum and the furnace as shown in
Figure 10 (page 11).
2
Opening in concrete floor
*SK MODEL
NUMBERS:
WARNING:
WARNING:
"B"
Dimension Dimension
"A"
054-23A ¼
13
072-24B ⅝
16
⅝
090-24B
16
⅛
108-35C
20
126-45D ⅝
23
Figure 9. Cutout Dimensions
"A"
"B"
¼
19
¼
19
¼
19
¼
19
¼
19