Honeywell PRESTIGE THX9321 - Manual (Page 45)

THX9321 PRESTIGE ® 2.0 AND THX9421 PRESTIGE ® IAQ WITH EIM
45 68-0311—02
4070 Outdoor
Temperature used
with Minimum Cool
Recovery Ramp
Rate
Off
-20° F to 100° F 90° F Commercial No Off: The cooling system will begin recovery
at the time that is scheduled.
When a Minimum Recovery Ramp Rate is
set, the thermostat will begin recovery
early to ensure the temperature is reached
at the scheduled time.
Set a Minimum Recovery Ramp Rate
based on the rate that the cooling system
can recover at for a hot day in your region.
Default setting is 3° F / hour.
If an outdoor sensor is installed, set an
Outdoor Temperature that is representative
of a hot day in your region to be associated
with the Minimum Recovery Ramp Rate.
The thermostat will begin recovery at the
optimal time based on a calculated ramp
rate, allowing the system to recover on
time and save energy during changing
outdoor conditions.
During recovery, the setpoint changes at a
rate in degrees per hour depending on the
outdoor temperature. If there is no outdoor
sensor, the Minimum Recovery Ramp
Rate is used.
4080 Maximum Cool
Recovery Ramp
Rate
Off
1° F/hr to 20° F/hr 6° F/hr Commercial No Off: The cooling system will begin recovery
at the time that is scheduled.
When a Maximum Recovery Ramp Rate is
set, the thermostat will begin recovery
early to ensure the temperature is reached
at the scheduled time.
Set a Maximum Recovery Ramp Rate
based on the rate that the cooling system
can recover at for a mild day in your region.
Default setting is 6° F / hour.
Set an Outdoor Temperature that is
representative of a mild day in your region
to be associated with the Maximum
Recovery Ramp Rate.
The thermostat will begin recovery at the
optimal time based on a calculated ramp
rate, allowing the system to recover on
time and save energy during changing
outdoor conditions.
During recovery, the setpoint changes at a
rate in degrees per hour depending on the
outdoor temperature.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes