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10
Quick Installation Guide
Number Description Options (factory default in bold)
365
Cool 1 CPH (Cooling
cycle rate stage 1)
1 - 6 CPH (3 CPH)
Note: This ISU is only displayed when Cool /Compressor Stages is set to 1 or more stages. 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.
366
Cool 2 CPH (Cooling
cycle rate stage 2)
1 - 6 CPH (3 CPH)
Note: This ISU is only displayed when Cool /Compressor Stages is set to 2.
370
Heat 1 CPH (Heating
cycle rate stage 1)
1 - 12 CPH
Note: This ISU is only displayed when Heat Stages is set to 1 stage or more stages. 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.
371
Heat 2 CPH (Heating
cycle rate stage 2)
1 - 12 CPH
Note: This ISU is only displayed when Heat Stages is set to 2 stages. 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
Aux Heat CPH (Heating
cycle rate Auxiliary
Heat)
1 - 12 CPH
Note: This ISU is only displayed when ISU 200 = Heat Pump and ISU 221=1. It is only displayed
when Auxiliary Heat is configured. The recommended 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.
425 Smart Response
0 = No
1 = Yes
Note: Smart Response is a comfort setting. Heat or Cooling equipment will turn on earlier,
ensuring the indoor temperature will match the setpoint at the scheduled time. See page 16.
430
Minimum Cool
Temperature Setpoint
50 °F to 99 °F (50 °F)
10.0 °C to 37.0 °C (10.0 °C)
Note: The cool temperature cannot be set below this level.
431
Maximum Heat
Temperature Setpoint
40 °F to 90 °F (90 °F)
4.5 °C to 32.0 °C (32.0 °C)
Note: The heat temperature cannot be set above this level.
702 Air Filters
0 - 1
Note: This ISU refers to the number of air filters in the system.
711
Air Filter 1
Replacement Reminder
0 = Off
1 = 10 Run Time Days
2 = 20 Run Time Days
3 = 30 Run Time Days
4 = 45 Run Time Days
5 = 60 Run Time Days
6 = 90 Run Time Days
7 = 120 Run Time Days
8 = 150 Run Time Days
9 = 30 Calendar Days
10 = 45 Calendar Days
11 = 60 Calendar Days
12 = 75 Calendar Days
13 = 3 Calendar Months
14 = 4 Calendar Months
15 = 5 Calendar Months
16 = 6 Calendar Months
17 = 9 Calendar Months
18 = 12 Calendar Months
19 = 15 Calendar Months
Note: Set a reminder for when to change your air filter. Choose either calendar or equipment run
time-based reminder.
1401 Idle Brightness
0= Off, 0 - 5
Note: Adjust brightness of an inactive backlight (idle screen) from default 0 (backlight off) to 5
(maximum brightness). Common wire required for settings 15.
1410 Clock Format 12 hour, 24 hour
1415 Daylight saving time
0 = Off
1 = On
Note: Set to Off in areas that do not follow Daylight Saving Time.
NOTE: Once you have cycled through all of the System Setup numbers, Done is displayed. Press Select to
save and exit.
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