Product Features; Air For Combustion And Ventilation - Superior VF18NBTB Installation And Operation Instructions Manual

OPERATION
This heater is clean burning. It requires no outside
venting. There is no heat loss out a vent or up a
chimney. Heat is generated by realistic fl ames
and glowing ceramic logs/coals. This heater is
designed for vent-free operation with fl ue damper
closed. It has been tested and approved to ANSI
Z21.11.2 standard for unvented heaters. State
and local codes in some areas prohibit the use
of vent-free heaters. This heater may also be
operated as a vented decorative (ANSI Z21.60)
product by opening the fl ue damper.

AIR FOR COMBUSTION AND VENTILATION

WARNING: This heater shall not be
installed in a room or space 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, or applicable local codes.
Read the following instructions to en-
sure 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 heat-
ing months, homeowners 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 ap-
pliances 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. This 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 Com-
bustion and Ventilation.
All spaces in homes fall into one of the three
following ventilation classifi cations:
6

PRODUCT FEATURES

SAFETY DEVICE
This heater has a pilot with an Oxygen Depletion
Sensing (ODS) safety shutoff system. The ODS/
pilot is a required feature for vent-free room heat-
ers. The ODS/pilot shuts off the heater if there
is not enough fresh air.
ELECTRONIC IGNITION SYSTEM
This system has an electronic igniter. This
system requires no matches or other sources
to light heater. Receiver requires 4 AA batteries
(included), hand-held remote control requires a
12-volt battery and a 3-volt button cell battery
for the LCD display (both included).
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 combus-
tion and ventilation. However, in buildings of
unusually tight construction, you must provide
additional fresh air.
Unusually tight construction is defi ned as
construction where:
a. walls and ceilings exposed to the outside
b. weather stripping has been added on
c. caulking or sealants are applied to areas
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, below.
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
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atmosphere have a continuous water
vapor retarder with a rating of one perm
(6 x 10 -11 kg per pa-sec-m
openings gasketed or sealed and
openable windows and doors and
such as joints around window and door
frames, between sole plates and fl oors,
between wall-ceiling joints, between
wall panels, at penetrations for plumb-
ing, electrical and gas lines and at other
openings.
2 ) or less with
126857-01B