Outside Air Installation - Heatilator ST36D Installation Manual

NO
Outlet blocked by
snow, leaves, etc.
YES
Clear area
outside
house or in
ventilated
• Use UL181 Class 1 or Class 0 rigid or flexible ducting.
crawl space
• Install with short run and add a P-trap which will help
prevent flow of cold air.
• Secure flex duct with screws or wire ties.
► Figure 3.9

Outside Air Installation

CAUTION! Risk of Cuts/Abrasions.
gloves and safety glasses during installation. Sheet metal
edges are sharp.
Outside Air Installation
• The hinge will be toward the front of the fireplace.
• Insert the narrow end of the handle into the upper slot.
• Pivot the handle in the slot toward the hinge.
• Remove the cover plate or knockout from the side of the
fireplace and discard. Remove the semi-perforated piece
of insulation covering the opening (insulated fireplaces
only).
• Partly open the air kit door and insert the handle into the
appropriate hole in the side column of the fireplace. The
hinge on the door assembly should be located toward
the front of the fireplace. If the hinge and the handle are
not positioned in this manner, the door will not function
correctly.
• Attach the door assembly to the fireplace using the
screws provided.
Figure 3.11 Outside Air Installation
14
NO
Garage or
24" (610 mm) min.
NO
combustible
48" (1220 mm) max.
liquids storage Attic space
Seal
4" Duct-Use UL181
Factory-built
fireplace Class 0 or Class 1
ducting
Wear protective
Flexible Duct
(not supplied)
Outside Air
Hood
2 Wire Ties
Heatilator • ST36D Installation Manual • 4012-061 • Rev M • 08/20
Typical CAK Installation
NO
Seal
Outlet placed
higher than 3 ft
below the
termination cap
Note: The pipe
cannot lay on top
of the unit.
►
• Check operation by pulling the handle out to open and
pushing it in to close.
• Mark and cut out a 4 1/2 in. (114 mm) hole in the building
side for air entry. This hole should allow some framing
(two sides) so the 4 in. (102 mm) diameter inlet tube
assembly may be fastened properly.
• Assemble flexible duct (not supplied) between the door
assembly and the inlet tube assembly. Secure it in
position with the supplied wire ties.
• 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.
Outside Air
Plate
Assembly
Figure 3.10 Outside Air Installation with Cold Air Trap
Typical Outside Air
Installation
Recommend
around 24 inches
for a minimum bend