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Idiomas disponibles
Advanced setup options (ISU) (continued)
# ISU
ISU Name
205
Heating Equipment
Type
Note: This option selects the equipment type your thermostat will control.
Note: This feature is NOT displayed if feature 200 is set to Cool Only.
218
Reversing Valve O/B
Note: This option is only displayed if the Heat Pump configured. Select whether reversing valve O/B
should energize in cool or in heat.
220
Cool Stages /
Compressor Stages
200=Conv / 200=HP
Note: Select how many Cool or Compressor stages of your equipment the thermostat will control.
Set value to 0 if you do not have Cool Stage/Compressor Stage.
221
Heat Stages /
Backup Heat Stages
Note: Select how many Heat or Aux/E stages of your equipment the thermostat will control.
230
Fan Control in Heat
Note: This ISU is only displayed if ISU 205 is set to Electric Forced Air or Fan Coil.
300
System Changeover
Note: Thermostat can automatically control both heating and cooling to maintain the desired
indoor temperature. To be able to select "automatic" system mode on thermostat home screen, turn
this feature ON. Turn OFF if you want to control heating or cooling manually.
303
Auto Changeover
Differential
Note: Differential is NOT deadband. Differential means how far past the setpoint before switching to
the mode selected. Deadband setup is not an option. An advanced algorithm fixes the deadband at
0 °F. This is more advanced than previous thermostats.
340
Backup Heat Droop
(TH4210U only)
350
Upstage Timer for
Backup Heat
(TH4210U only)
ISU Options (factory default in bold)
Conventional Forced Air Heat:
1 = Standard Efficiency Gas Forced Air
2 = High Efficiency Gas Forced Air
3 = Oil Forced Air
4 = Electric Forced Air
5 = Hot Water Fan Coil
Heat Pump:
7 = Air to Air Heat Pump
8 = Geothermal Heat Pump
Radiant Heat:
9 = Hot Water Radiant Heat
12 = Steam
0 = O (O/B in Cool)
1 = B (O/B in Heat)
0, 1
Heat Stages: 1
Backup Heat Stages: 0, 1
1 = Equipment Controls Fan
2 = Thermostat Controls Fan
0 = Manual
1 = Automatic
0 °F to 5 °F
0.0 °C to 2.5 °C
0 = Comfort
5 = 5 °F
2 = 2 °F
6 = 6 °F
3 = 3 °F
7 = 7 °F
4 = 4 °F
8 = 8 °F
0 = Off
3 = 60 minutes
1 = 30 minutes
4 = 75 minutes
2 = 45 minutes
5 = 90 minutes
7
9 = 9 °F
13 = 13 °F
10 = 10 °F
14 = 14 °F
11 = 11 °F
15 = 15 °F
12 = 12 °F
6 = 2 hours
10 = 5 hours
7 = 3 hours
8 = 4 hours
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