11
3.6
I
NSTALLING
I
NSULATED
F
LEXIBLE
D
UCTS
(
CONT
’
D
)
Use the following procedure for connecting the insulated flexible ducts to the unit ports (exhaust air to outside and fresh air from
outside). Refer to identification labels beside ports before performing any duct and port connection.
For both remaining ducts, pull back the insulation to expose the interior flexible duct.
Connect the interior flexible duct to the inner ring of the port using a tie wrap.
Pull the insulation over the joint and tuck it between the inner and outer rings of the port. Pull the vapor barrier over the
insulation and over the outer ring of the port.
Apply duct tape carefully to the joint in order to make an airtight seal. See figures below.
3.6.2 C
ONNECTION
TO
THE
UNIT
PORTS
VJ0160
Avoid compressing the insulation when you pull the tape tightly around the joint. Compressed insulation
loses its insulation properties and causes water dripping due to condensation on the exterior surface of
the duct.
CAUTION
3.7
I
NSTALLING
D
UAL
E
XTERIOR
H
OOD
*
Exterior dual hood is sent in separate parts. Using included 2 no. 8 x 3/4” screws,
assemble the top metal screen and the plastic grille to the dual exterior hood.
Then, slide the bottom metal screen to the dual exterior hood. See illustration at
right.
3.7.1 A
SSEMBLING
D
UAL
E
XTERIOR
H
OOD
VO0024
* Patended
3. I
NSTALLATION
(
CONT
’
D
)
3.7.2 L
OCATING
D
UAL
E
XTERIOR
H
OOD
The dual exterior hood must be installed at a minimum distance of 18 inches (457 mm) from the ground.
See illustration at right.
VD0083A
18”
(457 mm)
Make sure this hood is at least 6 feet (1.8 m) away (or more, as per applicable building
codes or standards) from any of the following:
• Dryer exhaust, high efficiency furnace vent, central vacuum vent
• Gas meter exhaust, gas barbecue-grill
• Any exhaust from a combustion source
• Garbage bin and any other source of contamination
WARNING
!