Vent Configuration: Horizontal Termination With Vertical Rise - Lopi Pro Builder 72 Linear GSB2 Installation Manual

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Vent Configuration: Horizontal Termination with Vertical Rise

 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: For this configuration the included thimble assembly is not required and may
be discarded.
 Vent configurations under 20' (from the base of the fireplace) use 8" dia. Vent.
NOTE: For this configuration the included thimble assembly may be used or use a
firestop (not included).
 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.
40' (12m) max
35 feet (10.5m)
Exhaust Restrictor # 9
30 feet (9m) Diffuser Open
6-5/8" Vent (place reducer on fireplace)
25 feet (7.5m)
20 feet (6m)
15 feet (4.5m)
Exhaust Restrictor # 4
Diffuser Open
8" Vent
10 feet (3m)
5 feet (1.5m)
Min. 2' Section of Vent Attached directly to Fireplace
0 feet
This is considered a horizontal
elbow (it does not matter
whether it turns right or left).
It may be a 90° or 45° elbow.
© Travis Industries
Installation
Exhaust Restrictor # 5
Diffuser Open
8" Vent
H2
H1
(for qualified installers only)
Exhaust Restrictor # 3
Diffuser Closed (stock)
8" Vent
Exhaust Restrictor # 1 (stock)
Diffuser Closed (stock)
8" Vent
Horizontal length is calculated by adding
both lengths of horizontal run
(Horizontal Length = H1 + H2).
This is considered a
vertical elbow
11/9/20 - 1478
Exhaust Restrictor # 6
Diffuser Open
6-5/8" Vent (place reducer on fireplace)
PB 72 GSB2/GSR2 Aust.
40' (12m) max
35 feet (10.5m)
30 feet (9m)
25 feet (7.5m)
20 feet (6m)
15 feet (4.5m)
10 feet (3m)
5 feet (1.5m)
0 feet