International comfort products H8UH5050B12C2 Installation Instructions Manual page 5

• The air temperature rise is within the rated rise range on the
furnace rating plate, and the firing rate has been set to the
rating plate value.
• The filters used to clean the circulating air during the
construction process must be either changed or thoroughly
cleaned prior to occupancy.
Figure 1 Dimensions and Clearances (H8UH5, MUF, HL Models)
TOP
1
5 /
3
(135mm)
LEFT SIDE
KO starting
hole to cut side
1
2 / (57mm)
duct opening
4
1
13 /
4
(337mm)
3
21 / (552mm)
4
7
1 /
8
5
(48mm) 26 / (676mm)
8
BOTTOM
D
1
23 / (587mm)
8
C
DIMENSIONAL INFORMATION
Cabinet
Furnace
Capacity
A B
H8UH5050/075B12
1
15 / 14
2
MUF050/075W3C
(394) (356)
HL12/18H3TRC
H8UH5100F14
1 5
19 / 17
8
MUF100W3C
(486) (447)
HL25H3TRC
H8UH5125/140J20
3 1
22 / 21
MUF125/140W5C
4
HL31H4TRC (578) (540)
HL34H5TRC
Installation Positions
This furnace can be installed in an upflow, horizontal (either left or
right) 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 position,
the return air ductwork must be attached to the bottom. The return
air ductwork must never be attached to the back of the furnace.
441 01 5003 01
F
*24" MIN.
(610mm MIN.)
5
(127mm)
1(25.4 mm)
3
3 / (95mm)
4
1
32 /
2
(826mm)
7
(178 mm)
7
27 /
8
(708mm)
5
17 /
16
(440mm) 38
(965mm)
1
27 /
2
(698mm)
1
7
4 / 1 / (38mm)
8 2
(124mm)
Drawing is representative.
Some models may vary
1
4 /
16
(103mm)
Top Bottom
Return Air
Opening
F C D
3 5
6 1 / 12 /
8 8
H
(152) (35) (321)
3 1 3
/ 7 / 2 / 14 /
8 4 8 4
J
(197) (54) (375)
1 15 3
/ 9 / 1 / 18 /
4 2 16 4
J
(241) (49) (476)
Specifications are subject to change without notice
• The furnace, ductwork and filters are cleaned as necessary to
remove drywall dust and construction debris from all HVAC
system components after construction is completed.
• Verify proper furnace operating conditions including ignition,
gas input rate, air temperature rise, and venting according to
these installation instructions.
MINIMUM CLEARANCES TO COMBUSTIBLE
MATERIALS FOR ALL MODELS
REAR
FRONT (combustion air openings
in furnace and structure)
Required For Service
ALL SIDES Of SUPPLY PLENUM
SIDES
VENT
Single--Wall Vent
Type B--1 Double Wall Vent
A
B
TOP OF FURNACE
*
30" (762 mm) clearance recommended for casing removal.
Horizontal position: Line contact is permissible only between lines
FRONT
formed by intersections of top and two sides of furnace jacket, and
building joists, studs or framing.
3
3 / (92mm)
4
2 (51mm)
3
30 /
4
(781mm)
37
(940mm)
1
29 /
2
(749mm)
(440mm)
1
33 /
2
(851mm)
1
1 / (38mm)
2
DIMENSIONS IN INCHES (mm)
KNOCK- -OUT = KO
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.
Furnace Installation
Inspect the rating plate to be certain the model number begins with
"H8UH5", "MUF", or "HL". This identifies the furnace as a
multi--position furnace and can be Installed in an Upflow, Horizontal
Right or Horizontal Left position. This furnace is NOT approved to
be installed in the downflow position.
0
3" (76mm)
*
24" (610mm)
1" (25.4mm)
0
6" (152mm)
1" (25.4mm)
1" (25.4mm)
1
28 / (724mm)
2
1
18 / (470mm)
2
RIGHT SIDE
1 (25.4 mm)
7
J
(178 mmm)
1
2 / (57mm)
4
H
5
17 /
16
1
13 /
4
(337mm)
7
4 /
3
21 / (552mm)
8
4
(124mm)
5
26 / (676mm)
8
KO starting
hole to cut side
duct opening
3
/
4
(19 mm)
40
(1016mm)
7
1 /
8
(48mm)
5