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PREPARING FOR INSTALLATION
WARNING: If the recreational or commercial
enclosure does not have a window or roof vent,
DO NOT USE THIS HEATER inside." Ventilation
Air From Inside Building.
Note: This heater can only be used in a
recreational or commercial enclosure with a
window or roof vent. This heater is not for outdoor
use."
Caution: When used without adequate
combustion and ventilation air, this heater may
give off excessive CARBON MONOXIDE, an
odorless, poisonous gas.
Ventilation Air From Inside Building
This fresh air would come from adjoining
unconfined space. When ventilating to an
adjoining unconfined space, you must
provide two permanent openings: one
within 12 in. of the wall connecting
the two spaces (see options 1 and 2,
Fig. 1). You can also remove door into
adjoining room (see option 3, Fig. 1).
Follow the National Fuel Gas Code
NFPA 54/ANS Z223.1. Air for Combustion
and Ventilation for required size of
ventilation grills or ducts.
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or duct. You must provide two
permanent openings: one within 12 in. of the
ceiling and one within 12 in. of the floor. Connect
these items directly to the outdoors or spaces
open to the outdoors. These spaces include attics
and crawl spaces. (See fig. 2).
Follow the National Fuel Gas Code NFPA 54/ANS
Z223.1. Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
IMPORTANT: Do not provide openings for
inlet or outlet air into attic if attic has a
thermostat-controlled power vent. Heated
air entering the attic will activate the power vent.
Rework worksheet, adding the space of the ad-
joining unconfined space. The combined spaces
must have enough fresh air to supply all appli-
ances in both spaces.
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