Monessen Hearth Direct Vent Gas Fireplace MDV500 - Manual (Page 6)

6 75D2523
PRE-INSTALLATION INFORMATION
INSTALLING ABOVE 2000 FEET
• In the USA, the appliance must be derated 4% for every 1,000 ft above 2,000 ft elevations.
• In Canada, these appliances are certified for altitudes of 0 – 2000 ft, and must be de-rated by 10 percent for installations
between 2000 and 4,500 ft. (derate an additional 4% for every 1,000 ft. above 4,500 ft. elevations).
If the heating value of the gas has been reduced, these rules do not apply. To identify the proper orifice size, check with local
gas utility.
If installing this appliance at an elevation above 4,500 feet (in Canada), check with local authorities.
ORIFICE SIZES, PRESSURES AND BTUs
NATURAL GAS PROPANE GAS
Manifold Press: (W.C.) 3.5" Manifold Press: (W.C.) 10"
Maximum Supply Pressure 10.5" Maximum Supply Pressure 13"
Minimum Supply Pressure 4" Minimum Supply Pressure 11"
BEFORE YOU START
Read this homeowner manual thoroughly and follow all instructions carefully. Inspect all contents for shipping damage and
immediately inform your dealer if any damage is found. Do not install any unit with damaged, incomplete, or substitute parts.
Check your packing list to verify that all listed parts have been received. You should have the following:
• Fireplace (Firebox and Burner System) • Fasteners • Front Floor Brick Assembly
• White Toggle Switch • Rock Wool • Non-Combustible Panel
• Log Set • Switch Cover Plate
• Canopy • Restrictor Plate/Disc (2 each)
ITEMS REQUIRED FOR INSTALLATION
Tools: Building
Supplies:
• Phillips Screwdriver • Framing Materials
• Hammer • Wall Finishing Materials
• Saw and/or saber saw • Caulking Material (Noncombustible)
• Level • Fireplace Surround Material (Noncombustible)
• Measuring Tape • Piping Complying with Local Codes
• Electric Drill and Bits • Tee Joint
• Pliers • Pipe Sealant Approved for use with Propane/LPG
• Square (Resistant to Sulfur Compounds)
• Pipe Wrench
Model Number
MDV500 MDV600
Natural Propane Natural Propane
Max. Btu/hr Input 30,000 30,000 32,000 32,000
Min. Btu/hr Input 21,500 23,500 22,000 26,000
Burner Orifice size (as shipped) 7/64" #51 #34 #50