MHSC MJ27NR Installation And Operating Instructions Manual page 4

IMPORTANT SAFETY INFORMATION
continued from page 3
16. Keep room area clear and free from combustible
materials, gasoline and other flammable vapors and
liquids.
17. Unvented gas heaters are a supplemental zone
heater. They are not intended to be the primary
heating appliance.
18. Unvented gas heaters emit moisture into the living
area. In most homes of average construction, this
does not pose a problem. In houses of extremely
tight construction, additional mechanical ventilation
is recommended.
19. 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 four hours
to properly cure logs and rock wool, with the burner
at the highest setting. Provide maximum ventilation
by opening windows or doors to allow odors to dis-
sipate. Any odors remaining after this initial break-in
period will be slight and will disappear with continued
use.
20. 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. Refer to the
National Fuel Gas Code.
21. The appliance and its appliance main gas 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).
22. The appliance must be isolated from the gas supply
piping system by closing its equipment 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).
23. 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.
4
24. 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.
25. Never burn solid fuels in a fireplace where a unvented
room heater is installed.
26. Always have a fireplace screen in place when the
appliance is in operation and, unless other provi-
sions for combustion air are provided, the screen
must have an opening(s) for induction of combustion
air.
Never connect unit to private (non-
utility) gas wells. This gas is commonly
known as wellhead gas.
Massachussetts resiDents only:
Please refer to Pages 40 & 41 for
additional information.
86D0024