Monessen Hearth 624DV(ST User Manual
Page 3

42D0200
Designer Series Gas Fireplaces
3
4. Never install the fireplace
•
in a recreational vehicle
•
where curtains, furniture, clothing, or other flammable 
objects are less than 42" from the front, top, or sides 
of the fireplace
•
in high traffic areas
•
in windy or drafty areas
5. This fireplace reaches high temperatures. Keep children
and adults away from hot surfaces to avoid burns or 
clothing ignition. Fireplace will remain hot for a time after 
shutdown. Allow surfaces to cool before touching. 
6. Carefully supervise young children when they are in
the room with fireplace.
7. Do not modify fireplace under any circumstances. Any
parts removed for servicing must be replaced prior to 
operating fireplace. 
8. Turn fireplace off and let cool before servicing, install-
ing, or repairing. Only a qualified service person should 
install, service, or repair the fireplace. Have burner 
system inspected annually by a qualified service 
person. 
9. You must keep control compartments, burners, and
circulating air passages clean. More frequent cleaning 
may be needed due to excessive lint and dust from 
carpeting, bedding material, pet hair, etc. Turn off the 
gas valve and pilot light before cleaning fireplace. 
10. Have venting system inspected annually by a qualified
service person. If needed, have venting system cleaned 
or repaired. Refer to Cleaning and Maintenance, page 
41. 
11. Keep the area around your fireplace clear of combus-
tible materials, gasoline, and other flammable vapor and 
liquids. Do not run fireplace where these are used or 
stored. Do not place items such as clothing or decora-
tions on or around fireplace. 
12. Do not use this fireplace to cook food or burn paper or
other objects.
13. Never place anything on top of fireplace.
INSTaLLER
Please leave these instructions with the owner.
owNER
Please retain these instructions for future reference.
IMPoRTaNT SaFETy INFoRMaTIoN
This fireplace is a vented product. This fireplace must be 
properly installed by a qualified service person. The glass 
door must be properly seated and sealed. If this unit is not 
properly installed by a qualified service person with glass 
door properly seated and sealed, combustion leakage can 
occur. 
CaRBoN MoNoxIdE PoISoNING: Early signs of carbon 
monoxide poisoning are similar to the flu with headaches, 
dizziness and/or nausea. If you have these signs, the fire-
place may not have been installed properly. Get fresh air 
at once! Have the fireplace inspected and serviced by a 
qualified service person. Some people are more affected 
by carbon monoxide than others. These include pregnant 
women, people with heart or lung disease or anemia, 
those under the influence of alcohol, and those at high 
altitudes. 
Propane/LP gas and natural gas are both odorless. An 
odor-making agent is added to each of these gases. The 
odor helps you detect a gas leak. However, the odor added 
to these gases can fade. Gas may be present even though 
no odor exists.
Make certain you read and understand all warnings. Keep 
this manual for reference. It is your guide to safe and proper 
operation of this fireplace.
1. This appliance is only for use with the type of gas 
indicated on the rating plate. This appliance is not 
convertible for use with other gases unless a certified 
kit is used. 
2. For propane/LP fireplace, do not place propane/LP
supply tank(s) inside any structure. Locate propane/
LP supply tank(s) outdoors. To prevent performance 
problems, do not use propane/LP fuel tank of less than 
100 gal. capacity. 
3. If you smell gas
•
shut off gas supply.
•
do not try to light any appliance.
•
do not touch any electrical switch; do not use any 
phone in your building .
•
immediately call your gas supplier from a neighbor’s 
phone. Follow the gas supplier’s instructions.
•
Read this owner’s manual carefully and completely before trying to assemble, operate, 
or service this fireplace. 
•
any change to this fireplace or its controls can be dangerous.
•
Improper installation or use of this fireplace can cause serious injury or death from 
fire, burns, explosions, electrical shock and carbon monoxide poisoning.
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RNING
