Today's modern, tight homes require fresh outdoor air to
maintain a healthy indoor air environment. The amount of
ventilation you require in your home will depend upon:
• the number of occupants and their activity levels,
• the way your home was built.
• your personal preferences for fresh air,
The HRV introduces fresh air to your home while
recovering energy from the air it exhausts. Specifically, an
HRV that is properly installed, operated and maintained
will:
• exhaust stale, contaminated air
• recover the majority of the energy from the exhausted
stale air
• use the recovered energy to preheat or precool outside air
that is drawn into the house
• distribute the fresh air throughout the house
HOW MUCH VENTILATION DO I NEED?
During seasons when your windows and doors are closed
(winter, and summer if air conditioned), the HRV should be
set to operate continuously on low speed with the option of
going to high speed as the need arises. For example: if you
are entertaining and there is a large number of people
present, the unit should be switched temporarily to high
speed.
You may wish to use an intermittent operational mode if
your home is unoccupied (20 minutes ON / 40 minutes
OFF).
Controlling your HRV
High indoor humidity levels are apparent from the visible
condensation on windows. The amount of condensation on
the windows will increase as outdoor temperatures drop.
Your HRV will reduce indoor humidity levels when outdoor
air is drier than indoor air. This usually occurs during the
heating season when outdoor temperatures are less than
15°C (59°F).
The Optional Dehumidistat (99-DH01) can be set to achieve
a further dehumidification effect from your HRV. High
speed ventilation will be initiated upon exceeding the
dehumidistat set point regardless of the mode and speed of
operation. Once the humidity in the house is reduced, the
HRV will revert back to its previous setting.
We suggest operating the unit for the first few days without
use of the dehumidistat function to observe if a further
dehumidification effect will be required. The dehumidistat
operates in % of RH (relative humidity) with 80 being high
and 20 being low. Set the Dehumidistat to 80% to disable.
If, after a few days, further dehumidification is required (the
house is still too humid), set the humidity level to a lower
amount.
The average person is comfortable between 30-50% RH.
The dehumidistat should be set to OFF for all seasons
except the heating season. OFF is achieved by setting the
dehumidistat to 80.
How the Dehumidistat Works
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Summary of Contents for CAF-D-L4A-36-P16
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