Vent System).
Under certain conditions, these fans may cause the
backdrafting of toxic combustion by-products that are
hazardous to human health and could cause death.
Therefore, we strongly recommend using only closed
combustion (direct-vent or aerodynamically decoupled)
heating appliances in weather tight homes. Most furnaces,
fireplaces and water heaters are now available with sealed
combustion or power exhaust.
2.2 Location of the Ultra-Aire Quiet Vent
Ideally each bathroom and the kitchen are ducted with a
4" duct to the Ultra-Aire Quiet Vent (See Fig. 1). To make
installation easy, the Ultra-Aire Quiet Vent has one 6" and
three 4" duct inlet Connections. The 6" outlet of the Ultra-Aire
Quiet Vent is ducted to the outside of the home. The Ultra-
Aire Quiet Vent should be positioned in the home to minimize
the amount of duct and wire required for installation. The
unit should be mounted and oriented to allow cleaning of the
internal blower screen via the side mounted clean-out port,
and adjustment of the 7-day timer (the timer can be remote
mounted away from the Ultra-Aire Quiet Vent (see paragraph
F). In cold climates the unit should be located in a heated
space to prevent condensation from forming inside the
cabinet. A basement or utility room is an ideal location.
If the Ultra-Aire Quiet Vent and its ducting must be located in
a unheated space in a cold climate, they must be insulated to
prevent condensation from forming in the system.
If the Ultra-Aire Quiet Vent is used to correct a moisture
problem in an existing house, a 6" duct should be run from
near the ceiling in the center of the house to the Ultra-Aire
Quiet Vent (see Fig. 1). This will provide adequate ventilation.
2.3 Fresh Air Inlets
The “FRESH 80" fresh air inlets are recommended to
provide fresh air to the bedrooms and prevent excessive
depressurization. These fresh air inlets should be located
on an exterior wall near the ceiling in any isolated rooms
that are occupied for extended periods of time with the door
closed. These vents have an adjustable opening, a filter
and a shut off valve. One air inlet is recommended in each
SAFETY PRECAUTIONS
3
Ultra-Aire Quiet Vent Installer’s & Owner’s Manual
14.5"
13.125"
24 hour timer
11" Hanger Straps
(4 supplied)
Electrical
Box Cover
Oil Port
13.5"
6"
Outlet
6"
Inlet
4"
Inlet
4"
Inlet
4"
Inlet
Figure 1
