Aprilaire 8100 - Manual (Page 4)

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THE BEST IN INDOOR AIR COMFORT
®
FIGURE 1A
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• Use of a collar when connecting to the return duct is
recommended.
• 6" round galvanized ductwork is recommended.
• Be sure to install two balancing dampers, see Figure
11, page 16.
EXHAUST AND FRESH AIR OUTDOOR CONNECTIONS
(Stale Air To Outdoors and Fresh Air From Outdoors)
• Insulated duct (often flexible ducting) of at least R-4
insulating value with a continuous vapor barrier must
be used for both duct runs connecting the Energy
Recovery Ventilator to the outdoors. The vapor barrier
must be sealed at both ends and extend from the
Aprilaire Energy Recovery Ventilator Housing to the
header (outer wall).
NOTE: In some areas, local codes prohibit a direct
connection to the forced air system. In this case an
“INDIRECT” or “SOFT” CONNECTION must
be made.
• The fresh air intake hood and exhaust air outlet hood
must be located at least 10' apart to avoid cross contami-
nation. Also, the fresh air intake should be a minimum of
10 feet from an appliance vent that exhausts toxic
gases. Using adjacent walls around an outside corner
will accomplish this easily. Both of these hoods should
be at least 18" above the ground or above the expected
snow line, whichever dimension is greater.
• The duct runs should be kept as straight, short and
equal as possible to minimize resistance and optimize
blower performance. Also, try to use as few bends and
restrictions as possible.
• DO NOT connect the exhaust outlet into an attic, storage
or garage space. This can cause excess moisture to
collect in these areas, causing possible damage to the
home from outdoors.
• The fresh air intake must be mounted in a location
removed from sources of pollution and extreme temper-
atures such as furnace exhaust, car exhaust, dryer
vents, central air condensing units, pet enclosures, etc.
• DO NOT connect the Aprilaire Energy Recovery
Ventilator exhaust to any gas appliance flue.
• Both intake and exhaust hoods must have a screen to
prevent small animals, insects, and large airborne
debris from entering the ductwork. This screen must be
accessible for easy cleaning. Both hoods must be
caulked to prevent water leakage.
WARNING: 120 Volts may cause serious injury from
electrical shock. Leave unit disconnected until
installation is complete.
G. ELECTRICAL CONNECTION
• The power cord can be plugged into any 120 VAC
grounded outlet preferably within 30" of unit.
• It is recommended that Aprilaire ® Energy Recovery
Ventilator ductwork remains separate from bathroom
exhaust fan ducts.
• Galvanized ductwork (6" round) is recommended
between the living space return grille and return inlet.
If rectangular duct is used, be sure it has an equivalent
air flow rating. Undersized ducting can cause air flows
to be out of balance or air flow reductions in the system,
resulting in poor performance.
• With any blower system, some sound is transferred
along the ductwork. A sound absorber at least 6' long
consisting of 1" thick rigid fiberglass duct or insulated
flexible duct (ATCO series 70 or equivalent) is recom-
mended for maximum absorbing of air movement sounds
between the unit and the living space return grille. A
balancing damper must be installed in this duct near the
Aprilaire
® Energy Recovery Ventilator, see Figure 11,
page 16. Install an air flow measuring device at least 5'
from damper in straight section and then complete the
system installation before proceeding to the balancing
instructions found on page 15.
SUPPLY: Fresh Air From Unit to House
(Fresh Air To House)
• The supply duct should be connected directly to the
forced air system return duct a minimum of 10' from the
furnace blower. Avoid making this connection in the
area of any return grille.
FRESH AIR TO HOUSE
SUPPLY AIR
RETURN AIR
FURNACE
FRESH AIR FROM OUTSIDE
STALE AIR TO OUTSIDE
AIR MOVEMENT SOUND ABSORBER
FIGURE 1
FRESH
AIR TO
HOUSE
INSTR.
LABEL
ENERGYMAX ®
TRANSFER CORE
E Z KLEEN ®
WASHABLE ALUMINUM
AIR FILTERS
POWER
CORD 120
VAC
STALE AIR
FROM
HOUSE
FRESH AIR
FROM
OUTSIDE
STALE AIR
TO OUTSIDE
(INSULATED
DUCT)
(DAMPERED
DUCT)
BLOWER
ASSEMBLY
(INSULATED
DUCT)
(DAMPERED
DUCT)
STALE AIR FROM HOUSE
(Centrally Located such as
Hallway or Foyer)
Note: In climates where the outdoor temperature
drops below 10°F (-12°C), the fresh air inlet duct
insulation must extend all the way to the Aprilaire
Energy Recovery Ventilator housing. Extra
insulation may be needed at the fresh air inlet
duct connection to the unit.
WARNING
LABELS
APRILAIRE ®
AUTOMATIC HUMIDIFIER
APRILAIRE ® HIGH
EFFICIENCY AIR CLEANER
APRILAIRE ® ENERGY
RECOVERY VENTILATOR