Lennox G24M3/4-100 User Manual

Page 13
Common Venting Using Metal-lined Masonry Chimney
4 in. (102 mm)
minimum
5 ft. (1.5 m)
minimum
MIN. LENGTH -- AS
SHORT AS PRACTICAL
MAX. LENGTH
-- SEE NOTE 1
BELOW.
SEALED
PERMANENTLY
SEALED FIREPLACE
OPENING
EXTERIOR
CHIMNEY WITH
B1 VENT OR
INSULATED
FLEXIBLE
VENT PIPE.
VENT CONNECTOR
SEE NOTE 2
NOTE 1 - Refer to the provided venting tables for installations in the USA and the venting tables in CAN/CGA-B149.1 for installations Canada.
NOTE 2 - Either singlewalled or doublewalled vent connector may be used. Refer to the capacity requirements shown in the
provided venting tables for installations in USA and the venting tables in current CAN/CGA-B149.1 for installations in Canada.
G24M
OTHER
APPLIANCE
FIGURE 15
Common Venting Using Tile-lined Interior Masonry
Chimney and Combined Vent Connector
G24M
OTHER
APPLIANCE
MINIMUM LENGTH = AS SHORT AS PRACTICAL.
FOR MAXIMUM LENGTH SEE NOTE TO LEFT
INTERIOR TILE-LINED
MASONRY CHIMNEY
NOTE - chimney must be properly
sized per provided venting tables
or lined with listed metal lining
system.
PERMANENTLY
SEALED FIREPLACE
OPENING
VENT
CONNECTOR
SEE NOTE 1 BELOW
Note 1 - Either singlewalled or doublewalled vent connector may be used. Refer to the capacity requirements as shown in the pro
vided venting tables for installations in USA and the venting tables in current CAN/CGA-B149.1 for installations in Canada.
NOTE- Refer to provided venting tables
for installations in the USA and the
venting tables in current CAN/CGA-
B149.1 for installations in Canada.
FIGURE 16
General Venting Requirements
All G24M furnaces must be vented according to these
instructions.
1 - Vent diameter recommendations and maximum al
lowable piping runs are found in the provided venting
tables for the USA, and the appropriate venting tables
in the standards of CAN/CGA B149.1 and B149.2 of
the Natural Gas and Propane Installation Code for
Canada.
2 - In no case should the vent or vent connector diameter
be less than the diameter specified in the provided
venting tables for the USA, and the appropriate vent
ing tables in the standards of CAN/CGA B149.1 and
B149.2 of the Natural Gas and Propane Installation
Code for Canada.

Lennox G24M3/4-100 Specifications

General

Brand	Lennox
Model	G24M3/4-100
Category	Furnace
Language	English