Monessen Hearth mhsc eyf18 ユーザーズマニュアル

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13.  Avoid any drafts that alter burner flame patterns. Do not 

allow fans to blow directly into fireplace. Do not place 
a blower inside burn area of firebox. Ceiling fans may 
create drafts that alter burner flame patterns. Sooting and 
improper burning will occur.

14.  Caution: Candles, incense, oil lamps, etc. produce 

combustion by-products including soot. Vent-free appli-
ances will not filter or clean soot produced by these types 
of products. In addition, the smoke and/or aromatics 
(scents) may be reburnt in the vent-free appliance which 
can produce odors. It is recommended to minimize the 
use of candles, incense, etc. while the vent-free appliance 
is in operation. 

15.  This is an unvented gas-fired heater. It uses air (oxygen) 

from the room in which it is installed. Provisions for ad-
equate combustion and ventilation air must be provided. 
See page 7. 

16.  Keep room area clear and free from combustible materi-

als, gasoline and other flammable vapors and liquids.

17.  Unvented gas heaters are a supplemental zone heater. 

They are not intended to be a primary heating appliance. 
Water vapor produced by an unvented heater can create 
moisture problems in a home when operated for extended 
periods of time.

18. During 

manufacturing, fabricating and shipping, various 

components of this appliance are treated with certain 
oils, films or bonding agents. These chemicals are not 
harmful but may produce annoying smoke and smells 
as they are burned off during the initial operation of the 
appliance; possibly causing headaches or eye or lung 
irritation. This is a normal and temporary occurrence.

    The initial break-in operation should last two to three 

hours with the burner at the highest setting. Provide 
maximum ventilation by opening windows or doors to 
allow odors to dissipate. Any odors remaining after this 
initial break-in period will be slight and will disappear 
with continued use.

19.  Input ratings are shown in BTU per hour and are for 

elevations up to 2,000 feet. For elevations above 2,000 
feet, input ratings should be reduced 4 percent for each 
1,000 feet above sea level. See the National Fuel Gas 
Code.

20.  The heater and its individual shutoff valve must be 

disconnected from the gas supply piping system during 
any pressure testing of that system at test pressures in 
excess of 1/2 psig (3.5 kPa).

21.  The heater must be isolated from the gas supply piping 

system by closing its individual manual shutoff valve 
during any pressure testing of the gas supply piping 
system at test pressures equal to or less than 1/2 psig 
(3.5 kPa).

22.   Do not use this room heater if any part has been under 

water. Immediately call a qualified service technician 
to inspect the room heater and to replace any part of the 
control system and any gas control which has been under 
water.

23.  This appliance must not be used with glass doors in the 

closed position. This can lead to pilot outages and severe 
sooting outside the fireplace.

24.  Never burn solid fuels in a fireplace where a unvented 

room heater is installed.

25.  Always have a fireplace screen in place when the ap-

pliance is in operation and , unless other provisions for 
combustion air are provided, the screen shall have an 
opening(s) for induction of combustion air.

We suggest that our gas hearth 
products be installed and 
serviced by professionals who 
are certified in the U.S. by the 
National Fireplace Institute

®

 

(NFI) as Gas Specialists.