Table of Contents
Advertisement
G. Install Outside Air Kit
• Keep duct runs short and straight to minimize restriction.
A small dip is acceptable for a cold air trap.
• Locate the outside air inlet hood in a clear area,
preferably into prevailing wind during the heating season.
Refer to Figure 3.9.
• Install as shown in Figures 3.8 and 3.9.
• The air duct may be run vertically.
• The outside air inlet hood must be at least 3 ft (.91 m)
below the top of the uppermost chimney section.
• Seal between the wall and the pipe with silicone to
prevent moisture penetration and air leaks.
• Seal between the outside air inlet hood and the house
with silicone to prevent air infiltration.
CAUTION! Risk of Fire or Asphyxiation! DO NOT
draw outside combustion air from wall, floor or ceiling
cavity, or enclosed spaces such as an attic or garage.
• DO NOT place outside air inlet hood close to ex-
haust vents or chimneys.
drawn into the room through the fireplace.
• Locate outside air inlet hood to prevent blockage
from leaves, snow/ice, or other debris. Blockages
could cause combustion air starvation.
14
Heat & Glo • BAY-40, PIER-40 Installation Manual • 4012-071 • Rev D • 10/03/13
Fumes or odor could be
NO
Outlet blocked by
snow, leaves, etc.
YES
Clear area
outside
house or in
ventilated
• Use UL181 Class 0 or Class 1 rigid or flexible ducting.
crawl space
• Install with short run or mainly straight duct, except small
dip for cold air trap which will help prevent flow of cold air.
• Secure flex duct with metal tape, screws or wire ties.
Figure 3.9
Outside Air Installation
Outside Air
Hood
• Hearth & Home Technologies Inc recommends using
UL181 Class 0 or Class I rigid or flexible ducting.
• Secure flex duct with metal tape, screws or wire ties.
Figure 3.8
NO
Garage or
NO
combustible
liquids storage
Attic space
Factory-built
fireplace
Flexible Duct
(not supplied)
Outside Air
Plate
Assembly
2 Wire Ties
Typical Outside Air Installation (BAY-40 will be in-
stalled from the bottom of the fireplace)
NO
Outlet placed
higher than 3 ft
below the
termination cap
Advertisement
Table of Contents
