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Idiomas disponibles
Advanced setup options (ISU) (continued)
# ISU
ISU Name
365
Compressor Cycle
Rate (Stage 1)
Note: This ISU is only displayed when Cool /Compressor Stage is set to 1 stage. Cycle rate limits the
maximum number of times the system can cycle in a 1 hour period measured at a 50% load. For
example, when set to 3 CPH, at a 50% load, the most the system will cycle is 3 times per hour (10
minutes on, 10 minutes off). The system cycles less often when load conditions are less than or
greater than a 50% load.
370
Heating Cycle Rate
(Stage 1)
Note: This ISU is only displayed when Heat Stage is set to 1 stage. Cycle rate limits the maximum
number of times the system can cycle in a 1 hour period measured at a 50% load. For example,
when set to 3 CPH, at a 50% load, the most the system will cycle is 3 times per hour (10 minutes
on, 10 minutes off). The system cycles less often when load conditions are less than or greater than
a 50% load. The recommended (default) cycle rate settings are below for each heating equipment
type: Standard Efficiency Gas Forced Air = 5 CPH; High Efficiency Gas Forced Air = 3 CPH; Oil
Forced Air = 5 CPH; Electric Forced Air = 9 CPH; Fan Coil = 3 CPH; Hot Water Radiant Heat = 3 CPH;
Steam = 1 CPH.
375
Heating Cycle Rate
Auxiliary Heat
(TH4210U only)
387
Compressor
Protection
Note: The thermostat has a built in compressor protection (minimum off timer) that prevents the
compressor from restarting too early after a shutdown. The minimum-off timer is activated after the
compressor turns off. If there is a call during the minimum-off timer, the thermostat shows "Wait" in
the display. This ISU is displayed if ISU 220 is set to at least 1 stage.
425
Adaptive Intelligent
Recovery
Note: Adaptive Intelligent Recovery (AIR) is a comfort setting. Heating or cooling equipment will
turn on earlier, ensuring the indoor temperature will match the setpoint at the scheduled time.
430
Minimum Cool
Setpoint
Note: The cool temperature cannot be set below this level.
431
Maximum Heat
Setpoint
Note: The heat temperature cannot be set above this level.
435
Keypad Lockout
Note: Due to customer feedback, this feature was changed. On the original software, you can
lockout the thermostat from the ISU the same as you can from menu lockout. For later versions, this
setting allows the contractor to enable or disable the lockout feature. When disabled, there is no
lockout option under menu. Lockout code is 1234.
702
Number of Air Filters
Note: This ISU refers to the number of air filters in the system.
ISU Options (factory default in bold)
1 - 6
1 - 12
1 - 12
0 = Off
1 - 5 minutes
0 = No
1 = Yes
50 °F to 99 °F (50 °F)
10.0 °C to 37.0 °C (10.0 °C)
40 °F to 90 °F (90 °F)
4.5 °C to 32.0 °C (32 °C)
Setting on Original T4 Models:
0 = None
1 = Partial
2 = Full
0 - 2
8
Setting on Current T4 Models:
0 = Disabled
1 = Enabled
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