Vermont Casting 20DVT Zero clearance sleeve is only required for combustible walls

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Brookhaven Direct Vent Gas Fireplace

Vent Opening for Combustible Wall

9³⁄

(240 mm)

Framing

9 ”Detail ³⁄

(240 mm)

Fireplace Hearth

Opening for Noncombustible Wall

7¹⁄

(190 mm)

VO584-100

Fig. 15 Locate vent opening on wall.

STEP 2

Measure wall thickness and cut adjustable zero clearance sleeve parts to proper length (MAXIMUM 12”/305 mm). Assemble sleeve and attach to firestop with #8 sheet metal screws (supplied). Install firestop assembly. (Fig. 16)

Zero clearance sleeve is only required for combustible walls.

Adjustable

Max. Length

Zero Clearance

12” (305mm)

 

Sleeve

 

 

#8 Screws (2)

#8 Screws

 

(2)

#8

 

Screws

 

(2)

Firestop

 

Adjustable Zero Clearance Sleeve

ZCS101

Fig. 16 Adjustable zero clearance sleeve.

STEP 3

Place fireplace into position. Measure the vertical height

(X)required from the base of the flue collars to the center of the wall opening. (Fig. 17)

STEP 4

Apply a band of silicone to the inner and outer flue collars of the fireplace and using appropriate length of pipe section(s) attach to fireplace with three (3) screws. Follow with the installation of the inner and outer elbow, again secure joints with three (3) sheet metal screws. Wipe off any excess silicone.

X

FP1181

Fig. 17 Vertical height requirements.

STEP 5

Measure the horizontal length requirement including a 2” (51 mm) overlap, i.e. from the elbow to the outside wall finish plus 2”, or the distance required if installing a second 90° elbow. (Fig. 18)

Always install horizontal venting on a level plane.

X

FP1182

Fig. 18 Horizontal length requirement.

STEP 6

Use appropriate length of pipe section - telescopic or fixed - and install. The sections which go through the wall are packaged with the starter kit, and can be cut to suit if necessary.

Sealing vent pipe and firestop gaps with high tem- perature sealant will restrict cold air being drawn in around fireplace.

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Contents Brookhaven Direct Vent Model 20DVT Table of Contents Installation & Operating Instructions Locating Your FireplacePlease Review the Following Carefully 20DVT Fireplace Dimensions Framing Dimensions20DVT Clearance to Combustibles MantelsHearth Gas Line Installation Framing and FinishingFinal Finishing Gas SpecificationsRemote ON/OFF Switch General VentingLocation of Vent Termination Canadian Installations1 US Installations2 General Venting Information Termination LocationCanadian Installations USA InstallationsGeneral Information Assembling Vent Pipes Flex Vent PipesHow to Use the Vent Graph Twist Lock PipesVertical Sidewall Applications Example aVertical Sidewall Installation Twist Lock Pipe Total angular variation =Step Always install horizontal venting on a level plane Zero clearance sleeve is only required for combustible wallsVertical Sidewall Installation Flex Vent Pipe Below Grade InstallationsVertical Through-the-Roof Installation Vertical Through-the-Roof ApplicationVenting supports Venting Components Glass Cleaning Window Frame Assembly RemovalOperating Instructions Glass InformationInstallation of Logs Log Identification ChartLog Installation Logs 20DVTFlame & Temperature Adjustment Flame CharacteristicsLarge Lava Rock Inspecting the Venting SystemTo Turn Off Gas To Heater What to do if YOU Smell GASTroubleshooting the Gas Control System SIT Nova 820 Millivolt ValveProceeding Nova SIT820 Valve ConversionBurner Orifice Conversion Pilot Orifice Conversion Maintenance Cleaning the Standing Pilot Control SystemBurner and Burner Compartment Description 8a,b 7a,b20DVT Fuel Conversion KitsOptional Accessories Available Remote ControlsCeramic Refractory Panels Optional Trim KitsBrookhaven Direct Vent Gas Fireplace Brookhaven Direct Vent Gas Fireplace Brookhaven Direct Vent Gas Fireplace Product Covered by this Warranty If Warranty Service is NEEDED…Efficiency Ratings AFUE%