Product Features; Air For Combustion And Ventilation - Superior MNF24INE Installation And Operation Instructions Manual

OPERATION
This appliance is clean burning. It requires no outside
venting. There is no heat loss out a vent or up a
chimney. Heat is generated by both realistic fl ames
and glowing coals. This appliance is designed for
vent-free operation with fl ue damper closed. It has
been tested and approved to the ANSI Z21.11.2
standard for unvented room heaters.
WARNING: This heater shall not
be installed in a room or space un-
less 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,
or applicable local codes. Read the
following instructions to ensure
proper fresh air for this and other fuel-
burning appliances in your home.
Today's homes are built more energy effi cient than
ever. New materials, increased insulation and new
construction methods help reduce heat loss in
homes. Homeowners apply weather strip and caulk
around windows and doors to keep the cold air out
and the warm air in. During heating months, home-
owners want their homes as airtight as possible.
While it is good to make your home energy effi cient,
your home needs to breathe. Fresh air must enter
your home. All fuel-burning appliances need fresh
air for proper combustion and ventilation.
Exhaust fans, some fi replaces, clothes dryers and
some fuel-burning appliances draw air from the house
to operate. You must provide adequate fresh air for
these appliances. That will ensure proper venting of
vented fuel-burning appliances.
PROVIDING ADEQUATE VENTILATION
The following are excerpts from National Fuel Gas
Code, ANSI Z223.1/NFPA 54, Air for Combustion
and Ventilation.
All spaces in homes fall into one of the three fol-
lowing ventilation classifi cations:
6

PRODUCT FEATURES

AIR FOR COMBUSTION AND VENTILATION

SuperiorFireplaces.us.com
SAFETY DEVICE
This heater has a pilot with an Oxygen Depletion
Sensing (ODS) safety shutoff system. The ODS/
pilot is a required feature for unvented appliances.
The ODS/pilot shuts off the appliance if there is not
enough fresh air.
ELECTRONIC IGNITION SYSTEM
This appliance has an electronic igniter to light
appliance fuel supply.
1. Unusually Tight Construction
2. Unconfi ned Space
3. Confi ned Space
The information on Pages 6-8 will help you classify
your space and provide adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and windows
may provide enough fresh air for combustion and
ventilation. However, in buildings of unusually tight
construction, you must provide additional fresh air.
Unusually tight construction is defi ned as con-
struction where:
a. walls and ceilings exposed to the outside
atmosphere have a continuous water vapor
retarder with a rating of one perm (6 x 10
2
kg per pa-sec-m
gasketed or sealed and
b. weather stripping has been added on open-
able windows and doors and
c. caulking or sealants are applied to areas such
as joints around window and door frames,
between sole plates and floors, between
wall-ceiling joints, between wall panels, at
penetrations for plumbing, electrical and gas
lines and at other openings.
If your home meets all three criteria above, you
must provide additional fresh air. See Ventilation
Air From Outdoors, Page 8.
If your home does not meet all three criteria above,
proceed to Determining Fresh-Air Flow For Heater
Location, Page 7.
Confi ned and Unconfi ned Space
The National Fuel Gas Code, ANSI Z223.1/ NFPA54
allows two methods for determining whether the
space in which the heater is being installed is
confi ned or unconfi ned space.
) or less with openings
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