Lifebreath Clean Air Furnace CAF-02-MB - Manual (Page 16)

Locating Intake Weatherhood
The intake weatherhood should be located as follows:
• 4 - 6' from ventilation exhaust hood, and upstream of
prevailing winds, if possible.
• At least 6' from a dryer vent, oil fill pipes, combustion
outlets, gas meters, garbage containers or anything else,
which may contaminate the air.
• Do not locate fresh air intake in garages, crawl spaces or
attics.
• Install 18" (45.72 cm) above grade, or above expected
snow accumulation.
Locating the Exhaust Weatherhoods
The Exhaust Weatherhood should be located as follows:
• At least 4-6' from the supply inlet
• At least 18" (45.72 cm) above grade or expected snow
accumulation
•
At least 3' from gas meters, combustion vents, or dryer
vents
•
Do not install in garages, crawl spaces or attics
Outside Ducting the Weatherhoods
The ventilation portion of the Clean Air Furnace can be
vented off either side of the unit by removing knockouts
provided. Once the knockouts in are removed, a bead of
silicone can be placed on the plastic thermo-collars (pro-
vided), to form a seal between the collars and the cabinet.
The collars can then be fastened into place with screws.
Note the exhaust outlet is always the port on the bottom,
and the supply inlet is always the port on the top, both
ports should be labeled from the factory as such.
The ductwork from the outside weatherhoods to the unit, is
usually flexible ducting, although rigid pipe may be needed
if the runs are greater than 10 feet. In either case the pipes
(both exhaust and supply and the added fittings) must be
insulated, with a complete vapor barrier.
To minimize restriction in airflows the ducting should be
short, with as few bends as possible. See diagram below
for recommended connection of insulated ducting to out-
side weatherhoods.
16
1. Thermal Collar slides over galvanized
sleeve of Weatherhood.
2. Fasten Thermal Collar to Belt.
3. Slide the Insulated Flexible Ducting over
the Weatherhood's galvanized sleeve and
fasten it to the Thermal Collar.
4. Hood is hinged to allow for easy access
for cleaning of bird screen.
WEATHERHOOD INSTALLATION
1/4" (6 mm) SCREEN
(front view)
EXTERIOR
WALL
SCREEN
(side view)
COLLAR IS SUPPLIED TO
ENSURE VAPOUR BARRIER
IS 100% SEALED TO
WALL PLATE
12" galvanized
pipe supplied
Locating Weatherhood
Installation
It is extremely important to design and install
the fresh air intake in an area where the hoods
will gather the freshest air.
ATTENTION