Vertical Run (in feet) (Measured from the appliance flue collar to the top of the vent pipe.)
May use one (1) elbow only
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Chateau™
DVT44 ONLY
When using the horizontal starter vent kit, SK8DVSK, with natural gas, do not use the restrictor plate. If using this vent kit with liquid propane, the 4¹⁄₂” restrictor plate may be used. (Fig. 16)
12"
(305mm)
Min. 
24"
(610mm)
Min.
LP Only
Use 4���"
FP1408
Fig. 16 Restrictor plate in horizontal venting.
For propane unit, fresh air restrictor plate is shipped from the factory at the #2 setting and can be adjusted to setting #1 in some applications if needed. Refer to Pages 20 & 21, Figures 36 & 38 for restrictor plate installation and fresh air plate setting adjustment.
DVT38 ONLY
When using the horizontal starter vent kit, SK8DVSK, with liquid propane, do not use the restrictor plate. If using this vent kit with natural gas, the 3” restrictor plate may be used. (Fig. 16)
Horizontal Run (in feet) | FP1359 |
Fig. 15 Horizontal vent termination window.
•Vent must rise a minimum of 2ʼ (610mm) before offset is used.
•Termination height must conform to roof clearance as specified in Figure 34.
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.
Use of the Restrictor Plates in
Horizontal Venting Applications
The primary purpose for the vent restrictor plate is to regain flame height under certain venting conditions as outlined below.
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 3¹⁄₂” (89mm) on top, 2¹⁄₂” (64mm) on both sides and 1¹⁄₂” (38mm) on the bottom.
When the vent termination exits through foundations less than 20” (508mm) below siding outcrop, the vent pipe must be flush 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 fire- place to the face of the outer wall.
Horizontal plane means no vertical rise exists on this portion of the vent assembly.
•The maximum number of 90° elbows per side wall installation is three (3), but must not have two (2) consecutive elbows in the horizontal plane.
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