Monessen Hearth Natural Blaze Series Installation & Owner's Manual page 36

Important Safety and Operating Information (continued)
OWNER
•
Any change to this heater or its controls can be dangerous.
•
or carbon monoxide poisoning.
•
•
Do not use a blower insert, heat exchanger insert or other accessory, not approved for use with
this heater where applicable.
of high surface temperature and should stay away
sooting, an unvented gas heater should be cleaned
before use and at least annually by a professional
partments, burners and circulating air passageways
CARBON MONOXIDE POISONING: Early signs of
the absence of local codes, with the National Fuel
Gas Code, ANSI Z223.l/NFPA54.
Heaters, latest edition and
36
Unvented
ANSI Z21.60-2012.
Monessen • Natural Blaze Owner's /Installation Manual • 4619-900 Rev. C • 1/2020
WARNING
heater, and annual cleaning are necessary to avoid
from improper installation or operation, can settle on
-
Caution:
-
-
-
unless the required volume of indoor combustion air is
provided by the method described in the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, the International
Fuel Gas Code
tight construction, additional mechanical ventilation is
components of this appliance are treated with certain
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
-