Venmar 41552 - Exterior Hood Installation

9
For the Installer
5.4.4 SIMPLIFIED INSTALLATION - RETURN/SUPPLY
Stale air from building ductwork:
• Cut an opening into the furnace return duct at least 10 feet (3.1 m) (A + B) away
from the furnace.
• Connect this opening to the stale air from building port of the HRV/ERV (as
illustrated).
Fresh air to building ductwork:
• Cut an opening into the furnace supply duct at least 18 inches (0.5 m) away from
the furnace.
• Connect this opening to the fresh air to building port of the HRV/ERV (use metal
ducts, see illustration at right).
• Make sure that the HRV/ERV duct forms an elbow inside the furnace ductwork.
NOTE : For this type of installation, it is recommended, however, not essential, that the
furnace blower be synchronized with the unit.
5.4.5 SIMPLIFIED INSTALLATION - RETURN/RETURN
Fresh air to building ductwork:
• Cut an opening into the furnace return duct at least 10 feet (3 m) away from the
furnace.
• Connect this opening to the fresh air to building port of the HRV/ERV (use metal
ducts, see illustration at right).
Stale air from building ductwork:
• Cut an opening into the furnace return at least 3 feet (1 m) ahead of the fresh air
to building ductwork connection to the furnace return.
• Connect this opening to the stale air from building port of the HRV/ERV.
• Make sure that both connections to the furnace return duct are at least 3 feet (1m)
apart.
VH0140
B
A
18” (0.5 M)
MINIMUM
A + B = AT LEAST
10’ (3.1 M)
VH0141
B
A
A + B = AT LEAST
10’ (3.1 M)
A
T LEAST
3’ (1 M)
CAUTION
When performing duct connections to the furnace supply
duct, use metal ducts appropriately sized to support the
additional airflow produced by the unit.
CAUTION
For this type of installation, the furnace must always be
synchronized with the unit. See section 8.
5.5 INSTALLING THE EXTERIOR HOODS
Refer to illustration at right to connect the insulated duct to the hoods. An “Anti-Gust
Intake Hood” should be installed in regions where a lot of snow is expected to fall.
VD0028
EXHAUST
H
OOD
INTAKE
HOOD
18”
(457 MM)
18”
(457 MM)
6” ø
(152 MM)
6’
(1.8 M)
6’
(1.8 M)
18”
(457 MM)
O
PTIONAL
DUCT
LOCATION
TAPE AND DUCT TIE
CAULKING
Make sure that both hoods are at least 18 inches above the
ground and that the intake hood is at least 6 feet (1.8m)
away from any of the following:
• Exhaust hood
• 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