Honeywell Prestige 2.0 THX9421 Manual page 41

ISU Installer Setup
Number Name
No Limit
4030 Override Duration
1 to 12 Hours
Off
4050 Minimum Heat
Recovery Ramp Rate 1° F/hr to 20° F/hr
Off
4050 Outdoor
Temperature used -20° F to 100°F
with Minimum Heat
Recovery Ramp Rate
THX9321 PRESTIGE
Table 4. Installer Setup (ISU) Table. (Continued)
Settings Default
3 hours
5° F/hr
0° F
41
®
2.0 AND THX9421 PRESTIGE
Residential,
Commercial Requires
or Both EIM
Commercial No When the user presses the OVERRIDE button,
the thermostat will maintain the new
temperature for at least 1 hour. The user can
adjust the Hold Until time from 1 hour to the
amount set for the Override Duration (1-12
hours). Default setting is 3 hours. If set to No
Limit, the user can adjust the Hold Until time
up to 24 hours.
Commercial No Off: The heating 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 heating system can recover at
for a cold day in your region. Default setting is
5° F / hour.
If an outdoor sensor is installed, set an Outdoor
Temperature that is representative of a cold 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.
Commercial No Off: The heating 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 heating system can recover at
for a cold day in your region. Default setting is
5° F / hour.
If an outdoor sensor is installed, set an Outdoor
Temperature that is representative of a cold 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.
®
IAQ WITH EIM
Notes
68-0311—07