GETTING THE MOST FROM YOUR FRESH AIR VENTILATION
SYSTEM
Moisture Control
Continual operation of the ventilation system is recommended for
optimum reduction of indoor air pollution and control of humidity.
Increased moisture removal will always occur at maximum ventilation
rates. Use the Hi switch position when first occupying a newly built
home to remove excess moisture from new wood, plaster, cement and
other moisture absorbing construction materials. If your system is wired
to a dehumidistat, it will switch the ventilator to the high speed setting
whenever the humidity level goes above the setpoint.
NOTE:
When the amount of moisture in the outside air is greater than
the amount in the inside air, running the ventilation system will
not dry the home. This will occur most often in the summer
months.
Remote Override Switch Functions
Your Fresh Air Ventilation System may incorporate one or more
remotely mounted Perfect Climate Comfort Centers™, dehumidistats,
timers or wall switches. When any of these devices are activated, the
ventilator will run at the high speed. The ventilator will return to the
previous setting when all the remote devices are deactivated. The
remote override function, in combination with the Standby setting, is
especially useful for intermittent bathroom exhaust where continuous
ventilation is not required. Continuous operation is recommended
except when the home is unoccupied, or when proper ventilation is
provided by other means such as open doors and windows.
Defrost
Ventilators designed for use in cold climates are equipped with an
automatic defrost system. The ventilator automatically detects restricted
airflow in the heat transfer core when ice starts to form and a defrost
cycle is initiated. The ventilator is closed off from the duct system, an
auxiliary heater is turned on and the air inside the ventilator is recircu-
lated continually to melt the ice that has formed. When the airflow
returns to normal, the sequence is reversed and ventilation returns to
normal. When the ventilator is in defrost, the LED indicator light on the
control panel is illuminated. Defrost time is held to a minimum by
Honeywell’s exclusive automatic defrost initiation circuit.
69-0854
8
