ER200 PERFECT WINDOW™ FRESH AIR VENTILATION SYSTEM
68-0131—2
4
PLANNING THE INSTALLATION
Application
The Fresh Air Ventilation System is designed to provide stale
air exhaust and fresh air supply. The system draws outdoor
fresh air through the ventilator for distribution throughout the
house. Stale air is exhausted through the ventilator and to the
outdoors. Ducting between the ventilator and outdoors and
ducting in unconditioned space must be insulated. See Fig. 2.
Mounting Position and Location
The ER200 can be suspended from the exposed floor/ceiling
joists, ceiling or floor surface, closet floor or utility room to
accommodate ducting between joists. The ER200 may be
mounted in any position. Locate the fresh air intake 6 ft (2m)
or farther from the stale air exhaust to avoid exhaust air
reentry. See Fig. 2.
NOTE: Build an insulated frame around the ventilator when
installing in an unconditioned space.
Frost Control Guidelines
ER200 120 Vac models are recommended for use to an
outdoor design temperature of 5°F (-15°C). In colder climates,
use the 240 Vac model that includes a preheat frost control
system to avoid frost formation in the ventilator.
NOTE: For pool, spa and other high humidity applications, a
frost control model is recommended for operation at
outdoor design temperatures below 15°F (-9°C).
Ducting
Ducting between the Fresh Air Ventilation System and the
outdoors must be insulated and have a continuous air vapor
barrier. See Fig. 3. Fresh air supply ducts from the Fresh Air
Ventilation System to the room must be insulated only when
located in an unconditioned space (without heating or
cooling).
WEATHER CAP
(ACCESSORY)
FRESH AIR SUPPLY
(INSULATE DUCTING
IN UNCONDITIONED
SPACE ONLY)
REMOTE DEHUMIDISTAT (OPTIONAL)
REMOTE FRESH AIR CONTROL
STALE AIR EXHAUST
(INSULATE DUCTING)
STALE AIR RETURN
(INSULATING DUCTING
IN UNCONDITIONED
SPACE ONLY)
WEATHER CAP
(ACCESSORY)
FRESH AIR INTAKE
(INSULATE DUCTING)
M6122B
Fresh Air Ventilation System
Système de ventilation à air frais
Fig. 2. Typical system components for ER200.
INSULATED
FLEX DUCT
COLLAR ON
VENTILATOR
SEAL INTERIOR LINING
OF FLEX DUCT TO
INSIDE COLLAR
SEAL OUTER LINING
OF FLEX DUCT TO
OUTER COLLAR
M6123
Fig. 3. Sealing insulated duct terminations.
CAUTION
All ducting to the outdoors must be installed above
anticipated snow lines and fitted with a weather cap
that incorporates bird screening.
Design and installation of ductwork must be in accordance
with standard HVAC practice to deliver required quantities of
fresh air to the temperature controlled space and exhaust
equivalent quantities of room air to the outside.
Make intake and exhaust duct runs as short as possible with
few bends or elbows.
1. Choose duct sizes that will maintain 0.2 in. wc static
pressure.
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