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MDVFST
VENTING INSTALLATION
WARNING: Read all instruc- tions completely and thoroughly before attempting installation. Fail- ure to do so could result in serious injury, property damage or loss of life. Operation of improperly in- stalledandmaintainedventingsys- tem could result in serious injury, property damage or loss of life.
WARNING:Sealallventconnec- tions. Seal only the outer pipe con- nections high temperature silicone (600°F/316°C). Beforejoiningelbows and pipes, apply a bead of high temperature silicone sealant (GE RTV 106/Loctite RTV 81585) to the male end of the elbow or pipe. High temperature silicone must also be usedtoresealanyconnectionsafter maintenance to venting system.
NOTICE: Failure to follow these instructions will void the warranty.
INSTALLATION PRECAUTIONS
Consult local building codes before beginning the installation. The installer must make sure to select the proper vent system for installation. Beforeinstallingventkit,theinstallermustread this fireplace manual and vent kit instructions.
Only a qualified installer or service person should install venting system. The installer must follow these safety rules:
•Wear gloves and safety glasses for protection
•Use extreme caution when using ladders or when on roof tops
•Be aware of electrical wiring locations in walls and ceilings
The following actions will void the war- ranty on your venting system:
•Installation of any damaged venting component
•Unauthorized modification of the vent- ing system
•Installation of any component part not manufactured or approved by DESA International
•Installation other than as instructed by these instructions
WARNING: This gas fireplace and vent assembly must be vented directly to the outside. The venting system must NEVER be attached to a chimney serving a separate solid fuel burning ap- pliance. Each gas appliance must use a separate vent system. Do not use common vent systems.
WARNING: Horizontal sections of this vent system require a mini- mum clearance of 2" from the top of the vent pipe and 1" minimum to the sides and bottom. Vertical sections of this system require a minimum of 1" clearance to combustible materi- als on all sides of the vent pipe.
INSTALLATION PLANNING
There are two basic types of
•Horizontal Termination
•Vertical Termination
It is important to select the proper length of vent pipe for the type of termination you choose. It is also important to note the wall thickness.
For Horizontal Termination: Select the amount of vertical rise desired. The horizon- tal run of venting must have 1/4" rise for every 12" of run towards the termination.
A MDVGFK ground floor horizontal vent kit is specifically designed for common horizontal installations in manufactured (mobile) homes. Additional horizontal in- stallations are described on page 9. All vent kits and components are listed on page 13.
WARNING: Never run the vent downward as this may cause ex- cessive temperatures which could cause a fire.
You may use one or two 90° elbows in a horizontal vent configuration. See Horizon- tal Termination Configurations on page 9.
For Vertical Termination: Measure the dis- tance from the fireplace flue outlet to the ceiling. Add the ceiling thickness, the verti- cal rise in an attic or second story, and allow for sufficient vent height above the roofline. You may use one or two 90° elbows in a
vertical vent configuration. See Vertical Ter- mination Configurations on pages 11 and 12.
Note: You may use two 45° elbows in place of a 90° elbow. You must follow rise to run ratios when using 45° elbows.
The MDV9K 9' vertical vent kit is specifi- cally designed for common vertical installa- tions in manufactured (mobile) homes. Ad- ditional vertical installations are described on pages 11 and 12. All vent kits and com- ponents are listed on page 13.
For
You may use a chase with a vent termination with exposed pipe on the exterior of the house. See Installing Vent System in a Chase, below.
Your Vanguard
It is very important that the venting system maintain its balance between the combus- tion air intake and the flue gas exhaust. Certain limitations apply to vent configura- tions and must be strictly followed.
Installing Vent System in a Chase
A chase is a vertical boxlike structure built to enclose venting that runs along the out- side of a building. A chase is not required for such venting.
NOTICE: Treatment of firestops and construction of the chase may vary from building type to building type. These instructions are not substitutes for the requirements of local building codes. You must follow all local building codes.
Note: When installing in a chase, you should insulate the chase as you would the outside walls of your home. This is especially im- portant in cold climates. Minimum clear- ance between vent pipes and combustible materials such as insulation is 1".
After framing the chase (see Framing on page 4) install the vent system by following the installation instructions.
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