Honeywell THX9321 Prestige 2.0 Product Data page 44

®
THX9321 PRESTIGE 2.0 AND THX9421 PRESTIGE
ISU Installer Setup
Number Name
4060 Outdoor
Temperature used
with Maximum
Heat Recovery
Ramp Rate
4070 Minimum Cool
Recovery Ramp
Rate
68-0311—02
Table 4. Installer Setup (ISU) Table. (Continued)
Settings
Off
-20° F to 100° F
Off
1° F/hr to 20° F/hr
®
IAQ WITH EIM
Residential,
Commercial
Default or Both
40° F Commercial
3° F/hr Commercial
44
Requires
EIM Notes
No Off: The heating 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 heating system
can recover at for a mild day in your region.
Default setting is 8° 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.
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.