Installation
(for qualified installers only)
29
© Travis Industries
11/9/20 - 1478
PB 72 GSB2/GSR2 Aust.
Vent Configuration: Vertical Termination
Vent configurations 20’ or above (from the base of the fireplace) use 6-5/8” dia.
vent. Connect a 8” to 6-5/8” reducer directly to the fireplace (98900165).
NOTE
: The included thimble assembly is not required and may be discarded.
The termination must fall within the shaded area shown in the chart. Use the indicated
restrictor positions.
Up to four elbows (45° or 90°) may be used. Only one horizontal elbow may be used.
5 feet (1.5m)
0 feet
0 feet
5 feet (1.5m)
0 feet
20 feet (6m)
20 feet (6m)
5 feet (1.5m)
10 feet (3m)
5 feet (1.5m)
10 feet (3m)
0 feet
15 feet (4.5m)
20 feet (6m)
10 feet (3m)
15 feet (4.5m)
15 feet (4.5m)
20' (6m) max
10 feet (3m)
15 feet (4.5m)
40' (12m) max
25 feet (7.5m)
30 feet (9m)
35 feet (10.5m)
40' (12m) max
25 feet (7.5m)
30 feet (9m)
35 feet (10.5m)
25 feet (7.5m)
30 feet (9m)
35 feet (10.5m)
40 feet (12m)
45 feet (13.5m)
50 feet (15m)
55 feet (16.5m)
60 feet (18m) max
25 feet (7.5m)
30 feet (9m)
35 feet (10.5m)
40 feet (12m)
45 feet (13.5m)
50 feet (15m)
55 feet (16.5m)
60 feet (18m) max
Exhaust Restrictor # 6
Diffuser Open
8" Vent
Exhaust Restrictor # 4
Diffuser Open
8" Vent
Exhaust Restrictor # 4
Diffuser Closed (stock)
8" Vent
Exhaust Restrictor # 6
Diffuser Open
6-5/8" Vent (place reducer on fireplace)
Exhaust Restrictor # 9
Diffuser Open
6-5/8" Vent (place reducer on fireplace)
This is considered a horizontal
elbow (it does not matter
whether it turns right or left).
It may be a 90° or 45° elbow.
This is considered a
vertical elbow
Horizontal length is calculated by adding
both lengths of horizontal run
(Horizontal Length = H1 + H2).
H1
H2