Lennox Merit Series Installation Instructions

Page 2
Unit Dimensions - inches (mm)
6-9/16 (167)
Left
9 (229)
Right
23
(584)
(19)
3/4
(19)
1
Bottom Return
Air Opening
GAS PIPING INLET
(Either Side)
Side Return
Air Opening
(Either Side)
1
Bottom Return
Air Opening
EXHAUST AIR
OUTLET
ELECTRICAL
INLET
(Either Side)
SUPPLY AIR
OPENING
FRONT VIEW SIDE VIEW
TOP VIEW
A
B
9/16 (14)
C
3/4
27-3/4
(705)
19-7/16
(494)
23-1/2
(597)
1-1/2
(38)
6-1/2 (165)
(Either Side)
33
(838)
3-3/8
(86)
1-15/16 (49)
14
(356)
9/16
(14)
12-5/8 (321)
(Either Side)
2
OPTIONAL
SIDE RETURN
AIR FILTER KIT
(Either Side)
16
(406)
14-3/4
(375)
2
OPTIONAL
SIDE RETURN
AIR FILTER KIT
(Either Side)
5/8
(16)
1
3-1/4
(83)
23-3/4
(603)
25
(635)
D
1 (25)
Front Panel
COMBUSTION
AIR INTAKE
2 (51)
(Either Side)
2 (51)
CONDENSATE
TRAP CONNECTION
(Either Side)
2
Optional Side Return Air Filter Kit is not for use
with the Optional Return Air Base.
1
2-7/8
(73)
AIR FLOW
Flue Condensate Trap Assembly
Furnished for external
field installation
on either side of unit.
(See installation instructions
for additional
information.)
7
(178)
NOTE - 60C size units that require air volumes over
1800 cfm must have one of the following:
1. Single side return air and Optional Return Air Base
with transition that must accommodate required
20 x 25 x 1 inch (508 x 635 x 25 mm) air filter to
maintain proper velocity.
2. Bottom return air.
3. Return air from both sides.
4. Bottom and one side return air.
See Blower Performance Tables for additional information.
Model No.
A
in - mm
B
in - mm
C
in - mm
D
in - mm
ML196UH030XE36B
ML196UH045XE36B
ML196UH070XE36B
ML196UH070XE48B
17-1/2 - 446 16-3/8 - 416 16 - 406 7-5/8 - 194
ML196UH090XE36C-
ML196UH090XE48C
ML196UH090XE60C
ML196UH110XE60C
21 - 533 19-7/8 - 505 19-1/2 - 495 9-3/8 - 238
ML196UH135XE60D 24-1/2 - 622 23-3/8 - 594 23 - 584 11-1/8 - 283

Lennox Merit Series Specifications

General

Brand	Lennox
Model	Merit Series
Category	Furnace
Language	English