Table of Contents
Advertisement
Figure 2
Dimensions and Clearances *8MPN/L Models
TOP
1
(135)
5
/
3
5
LEFT SIDE
1
2
/
(57)
4
1
13
/
Plugged starting hole
4
(337)
to cut side duct opening..
7
21
/
(556)
8
7
1
/
8
5
26
/
(676)
(48)
8
BOTTOM
D
1
23
/
(587)
8
C
Cabinet
Furnace
Capacity
A
B
*8MPL050B12
1
15
/
14
2
(394)
(356)
*8MPL075B12
*8MPL075F16
1
1
19
/
17
/
8
2
(486)
(445)
*8MPL100F20
*8MPL100J22
3
1
22
/
21
/
4
4
(578)
(540)
*8MPL125J20
* Denotes Brand (C, H, T)
Installation Positions
This furnace can be installed in an upflow, horizontal (either left or
right) or downflow airflow position. DO NOT install this furnace on
its back. For the upflow position, the return air ductwork can be
attached to either the left or right side panel and/or the bottom. For
horizontal and downflow positions, the return air ductwork must be
attached to the bottom. The return air ductwork must never be
attached to the back of the furnace.
6
F
(127)
24" (610) min.
1
(25)
3
3
/
(95)
4
(365)
38
(826)
1
32
/
2
7
(708)
(178)
7
27
/
8
(699)
1
27
/
2
(440)
5
17
/
16
11
1
/
7
4
/
16
8
(124)
(43)
ALL DIMENSIONS - in(mm)
1 in = 25.4 mm
1
4
/
(103)
16
Return
Top
Bottom
Air
F
C
D
Opening
3
5
6
1
/
12
/
8
8
H
(152)
(35)
(321)
3
1
3
7
/
2
/
14
/
4
8
4
J
(197)
(54)
(375)
1
15
3
9
/
1
/
18
/
2
16
4
J
(241)
(49)
(476)
Drawing is representative, but some models may vary
Specifications are subject to change without notice
Subject to change without notice.
COMBUSTIBLE MATERIALS FOR ALL UNITS
REAR
FRONT (combustion air openings in
furnace and in structure)
Required For Service
ALL SIDES Of SUPPLY PLENUM
SIDES
A
VENT
B
Single Wall Vent
Type B!1 Double Wall Vent
FRONT
TOP OF FURNACE
*
30" (762 mm) clearance recommended for furnace removal.
Horizontal position: Line contact is permissible only between lines
formed by intersections of top and two sides of furnace jacket, and
building joists, studs or framing.
(940)
37
(851)
1
33
/
2
(781)
3
30
/
4
(749)
1
29
3
1
/
4
(45)
NOTE: Evaporator "A" coil drain pan dimensions may vary from
furnace duct opening size. Always consult evaporator specifica
tions for duct size requirements.
Furnace is designed for bottom return or side return.
Return air through back of furnace is NOT allowed.
Furnace Installation
Inspect the rating plate to be certain the model number begins with
"N8MP" or "*8MP". This identifies the unit as a multi!position
furnace and can be Installed in a Upflow, Horizontal Right,
Horizontal Left or Downflow position.
* Dentoes Brand (C, H, T)
Upflow
No modifications are required for upflow installation. (See
Figure 3)
National Excelsior Company
www.excelsiorhvac.com
MINIMUM CLEARANCES TO
3" (76 mm)
*
24" (610 mm)
1" (25 mm)
6" (152 mm)
1" (25 mm)
1" (25 mm)
1
28
/
(724)
2
3
3
/
(95)
1
18
/
4
(470)
2
2
(51)
RIGHT SIDE
1
(25)
7
(178)
J
1
2
/
(57)
4
H
1
13
/
Plugged starting hole
/
4
2
to cut side duct opening..
(337)
(440)
5
17
/
16
5
7
4
/
21
/
(542)
8
8
(124)
1
26
/
(673)
2
0
0
3
/
(19)
4
40
(1016)
7
1
/
(48)
8
441 01 2613 05
Hide quick links:
Advertisement
Table of Contents
