SUREHEAT ReddyHeater IWH10NLTC Manual De Funcionamiento E Instalacion Del Propietario página 8

AIR FOR COMBUSTION AND VENTILATION
Provide extra fresh air by using ventilation
grills or ducts. You must provide two perma-
nent openings: one within 12" of the ceiling
and one within 12" of the floor. Connect these
items directly to the outdoors or spaces open
to the outdoors. These spaces include attics
and crawl spaces. Follow the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Air for
Combustion and Ventilation for required size
of ventilation grills or ducts.
Ventilation
Or
Grills
Remove
into Adjoining
Door into
Room,
Adjoining
Option 1
Room,
Option 3
12"
Figure 2 - Ventilation Air from Inside
Building
Note: Base not included. Not for use in bed-
rooms or bathrooms.
8
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Ventilation Air From Outdoors
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
adjoining unconfined space. The combined
spaces must have enough fresh air to supply
all appliances in both spaces.
Outlet
12"
Air
Ventilation Grills
Into Adjoining Room,
Option 2
Inlet
Air
Figure 3 - Ventilation Air from Outdoors
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Ventilated
Outlet
Attic
Air
Ventilated
Inlet Air
Crawl Space
200041-01B
To Attic
To
Crawl
Space