Monessen Hearth KHLDV400 User Manual
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KHLDV Series Gas Fireplace
pre-InStaLLatIOn InFOrMatIOn
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)
•
Log Set
•
Rock Wool
•
Noncombustible Panel
IteMS requIreD FOr InStaLLatIOn
•
Phillips Screwdriver
•
Framing Materials
•
Hammer
•
Wall Finishing Materials
•
Saw and/or saber saw
•
Level
•
Measuring Tape
•
Pliers
•
Electric Drill and Bits
•
Square
•
Pipe Wrench
•
Tee Joint
•
Noncombustible finishing material or dura-rock*
•
Caulking Material (noncombustible)
•
Fireplace Surround Material (noncombustible)
•
Piping Complying with Local Codes
•
Pipe Sealant Approved for use with Propane/LPG
(Resistant to sulfur compounds)
* Only used if desired to cover painted face other than using tiles 
or marble. If tiles or marble are used around the face then the 
non-combustible material is not needed.
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Do not fill spaces around firebox with 
insulation or other materials. this could 
cause a fire.
n
O
te
cOLD cLIMate InSuLatIOn
If you live in a cold climate, seal all cracks around your appliance, and 
wherever cold air could enter the room, with noncombustible material. 
It is especially important to insulate the outside chase cavity between 
the studs and under the floor on which the appliance rests, if the floor 
is above ground level.
FIreBOx FraMInG
Firebox framing can be built before or after the appliance 
is set in place. Refer to Figure 2 for firebox dimensions 
and framing. Construct firebox framing following Figure 
2 for your specific installation requirements. The framing 
headers may rest on the top of the firebox standoffs. Do 
not bring headers below top of standoffs. nOte: When 
planning your framing and installation, keep in mind that 
your gas line will come in on the right side of the box (as 
you are facing it) and your electricity will come in on the 
left side.
The firebox may be installed directly on a combustible floor 
or raised on a platform of an appropriate height. When 
the firebox is installed directly on carpeting, tile, or other 
combustible material, other than wood flooring, the firebox 
shall be installed on a metal or wood panel extending the 
full width and depth of the enclosure.
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unit framing is to be rectangular front to 
back. Failure to do so will cause fire and 
damage to property.
