Odyssey
│
Installation and Operation Instructions - Natural Draft
CT80-250
18
Table 6-1 Minimum Chimney Sizes
Minimum I=B=R Chimney
Model
Minimum
Breaching
Diameter
Rectangular
Round
Minimum
Chimney
Height
Boiler Flue
Collar Size
C80
C90
C100
C120
C150
6
"
15
'
C180
C215
7
"
15
'
C230
C250
5
"
8
" x 8
"
1
8
"
15
'
5"
Notes:
1
6-3/4" x 6-3/4" inside liner.
2
Excessive breeching length or too many elbows and/or tee will cause restriction.
Figure 6-1 Breeching & Blocked Vent Switch
Blocked Vent Switch
Draft Regulator
Secure breeching using a
minimum of two screws,
equally spaced. These two
screws must past through
the support tabs on either
side of the breeching.
Support Tabs
Blocked Vent Switch
Install the switch 6-8” from the boiler
breeching, refer to instructions included
with kit (mandatory in Canada).
Top Back Panel - Recommend
installing top back after flue
breeching connected and sealed
with high temperature silicone.
