1012
Vent
Priority
Lockouts, ASHRAE
Lockouts are Priority: The thermostat places a
priority on lockouts versus the ASHRAE
ventilation standard. The thermostat will not run
ventilation during the following lockout conditions
(if configured), unless you manually call for
ventilation:
Lockout Ventilation during Outdoor Conditions
(ISU 1013, 1014 and 1015).
Lockout Ventilation during “Sleep” program
periods. Note: This option is set by the user on the
Ventilation screen in the Menu.
ASHRAE is Priority: ASHRAE requires additional
ventilation following a long off cycle. The
thermostat meets the ASHRAE ventilation
standard by running additional ventilation when
outdoor conditions are favor- able. If ASHRAE
cannot be met when outdoor conditions are
favorable, the thermostat will override the outdoor
lockouts and run ventilation. When using this
option, it is recommended that you increase the
rate (CFM) of the ventilation equipment to meet
the ASHRAE ventilation standard in a shorter run
time. The ability to lockout
ventilation during the “Sleep” is not an option
when you select ASHRAE is Priority.
Table 6.
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