8
4. INSTALLATION (
CONT
’
D
)
4.5 I
NSTALLING
THE
D
UCTWORK
AND
THE
R
EGISTERS
S
TALE
AIR
EXHAUST
DUCTWORK
:
• Install registers in areas where contaminants are produced: Bathrooms, laundry room, etc.
• Install registers 6 to 12 inches (152 to 305 mm) from the ceiling on an interior wall OR install them in the ceiling (the duct leading
to the register must never go through the attic).
• If a register is installed in the kitchen, it must have a washable filter and be located at least 4 feet (1.2 m) from the range.
• If possible, measure the velocity of the air flowing through the registers. If the velocity is higher than 400 ft/min. (122 m/min), then
the register type is too small. Replace with a larger one.
F
RESH
AIR
DISTRIBUTION
DUCTWORK
:
• Install registers in every bedrooms, in living room and a minimum of one per level without bedroom nor living room.
• Install registers high on the walls with air flow directed towards the ceiling. The horizontal draft must be perceptible at 3 ft. (910 mm)
from register (The cooler air will then cross the upper part of the room and mix with room air before descending to occupant level.)
Never install a stale air exhaust register in a room where there is a combustion device, such as a gas furnace, a
gas water heater or a fireplace.
The ductwork is intended to be installed in compliance with all local and national codes that are applicable.
4.5.1 F
ULLY
D
UCTED
S
YSTEM
(
AS
ILLUSTRATED
IN
S
ECTION
3.1)
S
TALE
AIR
EXHAUST
DUCTWORK
:
Same as for Fully Ducted System, described on point 4.5.1 above)
F
RESH
AIR
DISTRIBUTION
:
4.5.2 S
YSTEM
C
OMBINED
WITH
A
F
URNACE
(
AS
ILLUSTRATED
IN
S
ECTION
3.2)
When performing duct connection to the furnace, installation must be done in accordance with all applicable
codes and standards. Please refer to your local building code.
• Cut an opening into the furnace return duct not less than 10 feet (3.1 m) from the
furnace (
A+B
).
• Connect this opening to one end of the top section of a metal T coupling (the T will
be reversed, see shaded part in illustration at right).
• Connect the other end of the T coupling top section to the fresh air distribution port
of the HRV (see illustration at right)
NOTE: For this case, it is essential that the furnace blower runs when the unit is in
operation. Synchronize the furnace blower operation with the HRV operation
(see Section 6).
B
A
VJ0089
A+B=
NOT
LESS
THAN
10’ (3.1
M
)
CAUTION
WARNING
!
WARNING
!
