Operating Your Fresh Air Ventilation System - Honeywell PERFECT WINDOW ER150 Owner's Manual

5a. Energy Transfer Core
As the exhaust and fresh air pass through opposite sides of the Energy Transfer
Core, heat is transferred from the warm side to the cold side. This heat transfer
reduces the cost of conditioning the fresh outside air that is brought into your
home. This increases the temperature of the fresh air brought inside in the winter
and cools the fresh air brought inside in the summer. In addition, for ER150 and
ER200 models, moisture is transferred from the wet side to the dryer side. The
core removes easily for cleaning.
5b. Heat Transfer Core
As the exhaust and fresh air pass through opposite sides of the Heat Transfer
Core heat is transferred from the warm side to the cold side. This heat transfer
reduces the cost of conditioning the fresh outside air that is brought into your
home. This increases the temperature of the fresh air brought inside in the winter
and cools the fresh air brought inside in the summer. The core removes easily
for cleaning.

Operating your Fresh Air Ventilation System

Changing Fan Speed
Depending on the control installed with your ERV, you might be able to change the fan
speed. Check the manual of your control for more information.
Connecting a Remote Device
Your ventilator comes equipped with a low voltage terminal strip for connection to
several optional control devices.
EXTERNAL REMOTE WALL CONTROL
(DEHUMIDISTAT)
The dehumidistat (connected to your ventilator) is designed to control the operation of
the ventilator fan to help keep the humidity level in your home comfortable. If an
independent humidifier is installed and set at 30% (a normal indoor winter level) then the
dehumidistat (for the ventilator) should be set at least 10% higher, in this case 40%. With
the ventilator operating on low speed and no one at home to produce humidity, the
humidifier will keep the humidity level at its setpoint. If the humidity levels rise (due to
occupant activity) above the 40% level, then the dehumidistat will automatically increase
the speed of the ventilator fan to high until the humidity level falls below 40%.
NOTE: During the winter months, the air inside your home usually contains more
moisture than the outside air even though the outside relative humidity is
higher than the inside relative humidity. The ventilator will automatically turn
off the dehumidistat feature during the summer months when the outside air
contains more moisture than the inside air.
TIMER
For your convenience, Honeywell provides an optional timer control that can fit a wide
variety of needs, for example, exhaust humid air from the bathroom or kitchen (see the
timer instructions for selection and part numbers).
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