Pre-Installation Information; Installing Above 000 Feet; Orifice Sizes, Pressures And Btus; Before You Start - Majestic 400DVBL Installation And Operating Instructions Manual

Dvbl series direct vent gas fireplace
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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. Where the heating value of
the gas has been reduced, these rules do not apply.
• 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).

ORIFICE SIZES, PRESSURES AND BTUs

NATURAL GAS
Manifold Press: (W.C.)
Maximum Supply Pressure
Minimum Supply Pressure
Model
400DVBLNV 400DVBLPV
Number
Gas Type
Natural
Max. BTU/h
26,000
Input
Min. BTU/h
19,000
Input
Orifice Size
2.50 mm

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)
• Rock Wool
• Log Set
ITEMS REqUIRED FOR INSTALLATION
Tools:
• Phillips Screwdriver
• Hammer
• Saw and/or saber saw
• Level
• Measuring Tape
• Electric Drill and Bits
• Pliers
• Square
• Pipe Wrench
6
PROPANE GAS
3.5"
Manifold Press: (W.C.)
10.5"
Maximum Supply Pressure
4.5"
Minimum Supply Pressure
500DVBLNV 500DVBLPV
Propane
Natural
26,000
28,000
21,000
20,000
1/16 in.
#38
10"
13"
11"
400DVBLNS
Propane
Natural
27,000
26,000
22,000
19,000
1.60 mm
2.50 mm
Building Supplies:
• Framing Materials
• Wall Finishing Materials
• Caulking Material (Noncombustible)
• Fireplace Surround Material (Noncombustible)
• Piping Complying with Local Codes
• Tee Joint
• Pipe Sealant Approved for use with Propane/LPG
(Resistant to Sulfur Compounds)
400DVBLPS
500DVBLNS
Propane
Natural
26,000
28,000
21,000
20,000
1/16 in.
#38
500DVBLPS
Propane
27,000
22,000
1.60 mm
74D0010

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