THX9321 PRESTIGE
®
2.0 AND THX9421 PRESTIGE
®
IAQ WITH EIM
68-0311—07 64
13130 Allow Cool Delta T
Diagnostics when
Indoor Temperature
is [Indoor
Temperature Range]
Minimum Setting
No Limit
35° F to 115° F (in 5° F
increments)
No Limit
(Always)
Both Yes This ISU only applies to Cooling.
This ISU is only displayed when ISU 13015 Set
Advanced Diagnostic Options is set to Yes.
The thermostat monitors Delta T of the system
ONLY when the indoor temperature is within a
certain range. Set to No Limit to monitor Delta
T during all indoor temperature conditions.
13130
Maximum Setting
No Limit
40° F to 120° F (in 5° F
increments)
No Limit
(Always)
Both Yes
13140 Allow Cool Delta T
Diagnostics when
Indoor Humidity is
[Indoor Humidity
Range]
Minimum Setting
No Limit
0% to 95% (in 5% increments)
No Limit
(Always)
Both Yes This ISU only applies to Cooling.
This ISU is only displayed when ISU 13015 Set
Advanced Diagnostic Options is set to Yes.
The thermostat monitors Delta T of the system
ONLY when the indoor humidity is within a
certain range. Set to No Limit to monitor Delta
T during all indoor humidity conditions.
13140
Maximum Setting
No Limit
5% to 100% (in 5% increments)
No Limit
(Always)
Both Yes
13150 Allow Cool Delta T
Diagnostics when
Outdoor
Temperature is
[Outdoor
Temperature Range]
Minimum Setting
No Limit
-50° F to 135° F (in 5° F
increments)
No Limit
(Always)
Both Yes This ISU only applies to Cooling.
This ISU is only displayed when ISU 13015 Set
Advanced Diagnostic Options is set to Yes.
The thermostat monitors Delta T of the system
ONLY when the outdoor temperature is within a
certain range. Set to No Limit to monitor Delta
T during all outdoor temperature conditions.
13150
Maximum Setting
No Limit
-45° F to 140° F (in 5° F
increments)
No Limit
(Always)
Both Yes
13160 Allow Cool Delta T
Diagnostics when
Outdoor Humidity is
[Outdoor Humidity
Range]
Minimum Setting
No Limit
0% to 95% (in 5% increments)
No Limit
(Always)
Both Yes This ISU only applies to Cooling.
This ISU is only displayed when ISU 13015 Set
Advanced Diagnostic Options is set to Yes.
The thermostat monitors Delta T of the system
ONLY when the outdoor humidity is within a
certain range. Set to No Limit to monitor Delta
T during all outdoor humidity conditions.
13160
Maximum Setting
No Limit
5% to 100% (in 5% increments)
No Limit
(Always)
Both Yes
13170 Defrost Cycle
None
1 to 60 minutes (in 1 minute
increments)
10 Both Yes This ISU is only displayed if ISU 2010 Heating
Equipment Type is Air to Air Heat Pump.
Press the up/down arrows to set the maximum
time duration of a defrost cycle. Check the heat
pump documentation for the defrost cycle time.
Note: The diagnostic algorithm detects when
the system goes into defrost based on the
measured Delta T of the system. When the
thermostat detects this change in temperature,
the thermostat will not compare Delta T to the
Minimum and Maximum Delta T Fault Limits.
After the defrost cycle has ended, the
thermostat will resume monitoring Delta T of
the system.
13180 Delta T Alert
Sensitivity
1 to 5
3 Both Yes See “Delta T Alert Sensitivity (ISU 13180).”
beginning on page 89.
Table 4. Installer Setup (ISU) Table. (Continued)
ISU
Number
Installer Setup
Name Settings Default
Residential,
Commercial
or Both
Requires
EIM Notes
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