13
1
/
4
28
1
/
2
3
3
/
4
17
1
/
3
2
1
/
4
Dimensions and Clearances (N8MPN/L)
Figure 1
Drawing is representative, but some models may vary
DIMENSIONS IN INCHES
NOTE: Evaporator “A” coil drain pan dimensions may vary
from furnace duct opening size. Always consult evaporator
specifications for duct size requirements.
Furnace is designed for bottom return or side return.
Return air through back of furnace is NOT allowed.
25--23--44a1
TOP
5
1
/
3
3
1
/
4
LEFT SIDE
6
1
/
2
3
3
/
4
5
27
1
/
2
33
13
1
/
4
24
1
/
2
1
7
/
8
21
3
/
4
26
5
/
8
13
1
/
4
4
7
/
8
1
1
/
2
7
1
RIGHT SIDE
28
1
/
2
18
1
/
2
2
1
/
4
13
1
/
4
17
1
/
3
3
/
4
2
7
1
35
32
21
3
/
4
1
1
/
2
25
3
/
4
4
7
/
8
26
5
/
8
1
7
/
8
FRONT
A
B
30² Min.
BOTTOM
D
C
23
1
/
8
4
1
/
16
Plugged starting
hole to cut side
duct opening
Plugged starting hole to cut
side duct opening
J
H
5
441 01 2611 06
· The air temperaturerise is within the rated rise range on
thefurnaceratingplate,andthefiringratehasbeensetto
the rating plate value.
· The filters used to clean the circulating air during the
construction process must be either changed or thor -
oughly cleaned prior to occupancy.
· The furnace, ductwork and filters are cleaned as neces-
sarytoremovedrywalldustandconstructiondebrisfrom
all HVACsystem components after construction is com-
pleted.
· Verifyproperfurnaceoperatingconditionsincludingigni-
tion,gas inputrate, air temperature rise, and ventingac-
cording to these installation instructions.
MINIMUM CLEARANCES TO COMBUSTIBLE
MATERIALS FOR ALL FURNACES
REAR 0
FRONT (combustion air openings
in furnace and structure)
3²
Required For Service
*24²
ALL SIDES Of SUPPLY PLENUM 1²
SIDES 0
VENT
Single--Wall Vent 6²
Type B--1 Double--Wall Vent 1²
TOP OF FURNACE 1²
*30² clearancerecommended forcasing removal.
Horizontalposition:Line contactispermissible onlybetween lines
formedby intersections oftop and two sidesof furnacejacket,and
buildingjoists,studs orframing.
DIMENSIONAL INFORMATION
Furnace
Cabinet Bottom
Return Air
Model
A B C D
Opening
N8MPN/L050B12
N8MPN/L075B12
15
1
/
2 14
1
3
/
8
12
5
/
8
H
N8MPN/L075F16
N8MPN100F14
N8MPN/L100F20
19
1
/
8
17
5
/
8
2
1
/
8
14
3
/
4
J
N8MPN/L100J22
N8MPN/L125J20
N8MPN/L125J22
22
3
/
4
21
1
/
4
1
15
/
16
18
3
/
4
J
To Next Page
Loading...
Need help?
General
