Honeywell Perfect Window HR150 Product Data page 6

HR150, 200, 205; ER150, 200 PERFECT WINDOW™ FRESH AIR VENTILATION SYSTEMS
Keep intake and exhaust duct runs as short as possible with
few bends or elbows.
• Keep duct sizes as large as possible throughout the
installation.
• Use a 6 in. diameter round duct for all connections to and
from the ventilator.
• Separate outside intake and exhaust vents by at least
6 ft (2m).
NOTES:
— Do not locate the fresh air vent where it blows
directly onto occupants or the thermostat.
— Do not locate the fresh air intake close to known
sources of pollutants such as automobile exhaust,
a dryer vent or chimney smoke.
• Ducting the supply outlet and/or the exhaust inlet of the
ventilator to the return air plenum of the air handler is an
excellent way to distribute fresh air and exhaust stale air
from all parts of the house, while reducing installation
OUTDOORS
EXHAUST AIR FROM
VARIOUS PARTS OF
HOME (BATHROOMS
IF REQUIRED; KITCHENS
IF REQUIRED; ROOMS
WITHOUT OPERABLE WINDOWS,
AND POTENTIALLY BASEMENTS).
NOTES:
1. FURNACE BLOWER NEED NOT OPERATE TO PROVIDE GOOD AIR DISTRIBUTION/QUALITY WITH THIS SYSTEM.
2. IF FURNACE BLOWER OPERATION IS REQUIRED TO HELP DISTRIBUTE SUPPLY AIR: RUN CONTINUOUSLY
OR INTERLINK ELECTRICALLY (LOW VOLTAGE) USING OPTIONAL 32003248-001 BLOWER INTERFACE KIT.
3. NO SEPARATION REQUIREMENTS ARE NECESSARY BETWEEN DIRECT CONNECTION POINT AND FURNACE.
4.
WEATHER-HOOD ARRANGEMENT IS FOR DRAWING ONLY. 6 FT (2m) MINIMUM SEPARATION REQUIRED,
18 IN. (0.46m) ABOVE GRADE MINIMUM.
Fig. 6. Direct connection of supply air stream to furnace cold air return for HRV/ERV.
68-0171-9
costs. When choosing this method, balance the ventilator
when the air handler is running and interlock the ventilator
so that it can run only when the air handler runs. See
Fig. 6. An alternate method is to balance the ventilator
when the air handler is not running and let the ventilator
run whether the air handler is running or not, see Fig. 7. An
independent installation is shown in Fig. 8.
NOTE: When the home is occupied, continuous operation of
the ventilator is recommended. When the furnace air
handler operates, fresh air is distributed through the
heating/air conditioning supply registers. When the
air handler is off, fresh air is delivered through both
supplies and returns.
• An electrical interlock or an automatically powered damper
must be used to prevent unwanted entry of outside air if the
ventilator is turned off while the furnace air handler
continues to operate.
RETURN
AIR
6
COLD AIR
RETURN
FORCED AIR
FURNACE
COMBUSTION
OR ELECTRIC
M6549C