10
2.8
I
NSTALLING
2 E
XTERIOR
H
OODS
Choose an appropriate location to install the exterior hoods:
• There must be a inimum distance of 6’ (1.8 m) between the hoods to avoid cross-contamination
• There must be a minimum distance of 18” (457 mm) from the ground
Refer to figure below for connecting insulated ducts to the exterior hoods. An “Anti-gust intake hood” should be installed in regions
where a lot of snow is expected to fall.
WARNING
Make sure the intake hood is at least 6 feet (1.8 m) away 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
!
VD0028
E
XHAUST
HOOD
I
NTAKE
HOOD
T
APE
AND
DUCT
TIE
18"
(457
MM
)
6'
(1.8
M
)
18"
(457
MM
)
18"
(457
MM
)
6'
(1.8
M
)
6" Ø
(152
MM
)
O
PTIONAL
DUCT
LOCATION
2. INSTALLATION (
CONT
’
D
)
2.9
I
NSTALLING
THE
T
ANDEM
®
T
RANSITION
* K
IT
If desired, a Tandem transition kit can be used instead of 2 exterior hoods; but take in
account this device will generate additional 0.23 in. w.g. static pressure.
The joist opening needed to install the Tandem
®
transition must be 9¾” minimum. The
maximum height of the Tandem transition is 8¾”.
To connect the insulated flexible ducts to the Tandem transition (
Exhaust air to outside
and
Fresh air from outside
), follow the instructions included with the Tandem transition kit
(part
no.14690).
*Patented.
VR0003
Tandem transition kit