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 singlewalled or doublewalled 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 singlewalled or doublewalled 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.
