Monessen Hearth GCUF Series Installation And Operating Instructions Manual page 4

IMPORTANT SAFETY INFORMATION
Continued from page 3
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.
21. 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.
22. 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 pres-
sures in excess of 1/2 psig (3.5 kPa).
23. 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).
24. 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.
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 provisions
for combustion air are provided, the screen shall have
an opening(s) for induction of combustion air.
27. Do not fill spaces around the firebox with insulation or
other materials. These spaces must be maintained to
prevent the firebox from coming in contact with com-
bustible materials.
4 Monessen • GCUF/GRUF Owner Manual • 71D0530 • Rev G • 01/20
GCUF/GRUF Vent-Free Fireboxes
WARNING!
Do not attempt to burn solid wood fuels, vented
gas log sets, or any other combustible in this
unvented firebox. Also, do not install a vent-
free gas log set in this firebox if the minimum
clearance and height requirements of the log
set are too large for the firebox.
Notice: Illustrations shown in this manual reflect
"typical" installations with nominal dimensions and
are for design and framing reference only. Actual
installations may vary due to individual design
preferences. However, always maintain minimum
clearances to combustible materials and do not
violate any specific installation requirements.
WARNING: This product and the
Nous recommandons que nos
fuels used to operate this product (liquid
appareils de chauffage au gaz
propane or natural gas), and the products
soient installés et entretenus par
of combustion of such fuels, can expose
des professionnels qui ont été
you to chemicals including benzene, which
accrédités aux È.U. par le National
Fireplace Institute ® (NFI) comme
is known to the State of California to cause
étant des spécialistes du NFI en
cancer and reproductive harm. For more
matièred'appareils de chauffage
information go to: www.P65Warnings.
au gaz.
ca.gov.