Lennox G23 Series Installation Instructions

Page 2
G23(X) Unit Dimensions - inches (mm)
AIR FLOW
SUPPLY
AIR
OPENING
FLUE
OUTLET
4 (102)
11/16
(41)
B
C
F
GAS PIPING INLET
(Both Sides)
ELECTRICAL INLETS
(Both Sides)
RETURN AIR
KNOCKOUT
(Either Side)
281/2
(724)
A
23 (584)
115/16 (49)
G
45/8
(117)
TOP VIEW
FRONT VIEW
SIDE VIEW
11/16
(41)
4 (102)
233/4 (603)
25 (635)
5/8
(16)
J
H
5/8 (16)
EXTERNAL
SIDE RETURN
AIR FILTER KIT
(Either Side)
(Optional)
133/16 (335) Left
1315/16 (354) Right
2-3/8 (60) Left
5 (127) Right
Return Air
Knockout (Bottom)
Bottom Return
Air Knockout
187/8
(479)
23 (584)
D
E
Model No.
A B C D E F G H J
G23Q2(X)-50
G23Q3(X) 50
in. 40 161/4 141/8 12 12 21/8 5 14 123/4
G23Q3(X)50
G23Q2/3(X)75
mm 1016 413 359 305 305 54 127 356 324
G23Q3(X) 100
in. 40 211/4 191/8 14 14 35/8 71/2 16 143/4
G23Q3(X)100
mm 1016 540 486 356 356 92 191 406 375
G23Q4/5(X)75
G23Q3/4
(
X
)
-100
in. 46 211/4 191/8 18 18 15/8 71/2 20 183/4
G23Q3/4(X) 100
G23Q4/5(X)-100
G23Q3/4(X)-125
mm 1168 540 486 457 457 41 191 508 476
G23Q5/6
(
X
)
125
in. 46 261/4 241/8 18 18 41/8 10 20 183/4
G23Q5/6(X)125
G23Q5/6(X)-150
mm 1168 667 613 457 457 105 254 508 476

Lennox G23 Series Specifications

General

Brand	Lennox
Model	G23 Series
Category	Furnace
Language	English