RDV4136 Series Direct Vent Gas Fireplace
Be sure to install the baffle as shown in Figure 16. Close half the opening when used on extended vent runs. Be sure there is no lifting or ghosting of the flame.
Flue Pipe
Flue Box
Baffle 
Screws
FP1863
Fig. 15 Install baffle to the deflector. | |
| Slot |
| Be sure this |
| portion is |
Baffle | towards the |
| front of the |
| fireplace |
FP1864
Fig. 16 Baffle in position, top view.
Vertical Sidewall Applications
Since it is very important that the vent- ing system maintain its balance between the combustion air intake and the flue gas exhaust, certain limitations as to vent configurations apply and must be strictly adhered to.
The vent graph showing the relationship between verti- cal and horizontal side wall venting will help to deter- mine the various dimensions allowable.
Minimum clearance between vent pipes and combustible materials is one 1” (25mm) on top, bottom and sides unless otherwise noted.
When the vent termination exits through foundations less than 20” (508 mm) below siding outcrop, the vent pipe must flush up with the siding.
It is always best to locate the fireplace in such a way that minimizes the number of offsets and horizontal vent length of vent pipe from the flue collar of the fireplace to the face of the outer wall.
20' (6m)
(2.3m) | Pipe |
Straps Every | |
| 3’ (914mm) |
7.5' | Pipe Straps |
Every 3’ (914mm) | |
| Firestop/Zero |
| Clearance Sleeve |
| FP1012 |
Fig. 17 Support straps for horizontal runs.
Horizontal plane means no vertical rise exists on this portion of the vent assembly.
•The maximum number of 90° elbows per side wall installations is three (3).
•If a 90° elbow is used in the horizontal vent run (level height maintained) the maximum horizontal vent length is reduced by 36” (914 mm). This does
not apply if the 90° elbows are used to increase or redirect a vertical rise.
Example: According to the chart the maximum vertical vent length in a system with a 7.5’ (2.3 m) horizontal rise is 20’ (6 m) and if a 90° is required in the horizontal vent it must be reduced to 17’ (5.2 m). In Figure 19, Dimension A plus B must not be greater than 17’ (5.2 m).
•The maximum number of 45° elbows permitted per side wall installation is two (2). These elbows can be installed in either the vertical or horizontal run.
2'
(610 mm)
5' (1.5 m)
2'
(610 mm)
Minimum Horizontal | |
Vent Run | |
| Maximum Horizontal |
FP1821 | Vent Run |
Fig. 18 | Horizontal vent run. |
14 | 10010618 |