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P/N 780100700 07/18 Rev F
In Climate Mode: COLD
The FAVC will provide fresh outside ventilation if the outside temperature
is between 100°F and 0°F depending on if the HVAC system is in heating or cooling mode and
depending on indoor relative humidity change during ventilation cycle. Below 25°F outside
temperature and in heating mode, the ventilation is restricted to 25% depending on if indoor
humidity is above or below 50% RH. Above 90°F outside temperature and in cooling mode, the
ventilation is restricted to 25% depending on if indoor humidity is above or below 60% RH. Between
25-50°F outside temperature, ventilation requires heating and if indoor humidity level is above 50%
RH and RH continues to increase, then fresh air ventilation is limited to prevent induct condensation
from occurring.
FIGURE 7: Cold Climate Operation
3C. COLD CLIMATE ZONE
In Climate Mode: HOT
The FAVC will provide fresh outside ventilation if the outside temperature
is between 100°F and 25°F depending on if the HVAC system is in heating or cooling mode
and depending on indoor relative humidity change during ventilation cycle. Below 32°F outside
temperature and in heating mode, the ventilation is restricted to 25% depending on if indoor
humidity is above or below 50% RH. Above 90°F outside temperature and in cooling mode, the
ventilation is restricted to 25% depending on if indoor humidity is above or below 60% RH. Between
32-40°F outside temperature, ventilation requires heating and if indoor humidity level is above 50%
RH and RH continues to increase, then fresh air ventilation is limited to prevent induct condensation
from occurring.
FIGURE 8: Hot Climate Operation
3D. HOT CLIMATE ZONE
