User's Manual

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Setup and testing
Ventilation system settings table
Note: Ventilation can be installed only if humidification is not installed and Dehumidifier Control is not set
to Whole Home.
System setting Description
Factory default setting
(bold) and setting range
Home Size Selects the home size to be used for the ASHRAE
calculation. If multiple ventilation systems are
used, this should be set to the size of the zone
that this thermostat is controlling. (Only available
if Fresh Air Setup is set to ASHRAE.)
2500 SQ FT
1000 to 5000 SQ FT
Fresh Air CFM Selects the ventilation CFM to be used for the
ASHRAE calculation. (Only available if Fresh Air
Setup is set to ASHRAE.)
60 CFM
30 to 200 CFM
Select Climate Selects the climate to be used for the ASHRAE
calculation. (Only available if Fresh Air Setup is
set to ASHRAE.) To determine what region you
are in, refer to the map on the following page.
Normal
Very Hot/Humid
Very Cold
ASHRAE Cycle Time Displays the Fresh Air Time calculated by the
ASHRAE standard. (Only displayed if Fresh Air
Setup is set to ASHRAE.)
Minutes/Hour
Note: In ASHRAE setup, temperature and humidity limits are disabled.
Note: Refer to manuals for humidifier, dehumidifier, air cleaner, and ventilation products for recommended
installation and operation.
Climate map for ASHRAE Fresh Air Setup
Very hot/humid
Very cold