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General| Display Type | LCD |
|---|---|
| Stages | 1 Heat/1 Cool |
| Hold Function | Yes |
| Filter Change Alert | Yes |
| Power Source | 24VAC |
| Compatibility | Conventional systems |
Lists the main capabilities of the T1800 thermostat, including multi-stage control, configurable outputs, and advanced features.
Advises following installation instructions and setting the mode to OFF before changing settings or restoring defaults.
Warns against placing more than one jumper on the same MISC jumper block to prevent damage and voiding the warranty.
Details the Backlit LCD Display, Warmer Button, Cooler Button, and Mode Button.
Provides instructions for setting the thermostat's clock and day of the week.
Guides users on how to select the operating mode (Heat, Cool, Auto, Off, Program On).
Step-by-step guide to setting the current time on the thermostat.
Instructions for selecting the current day of the week.
Describes the AUTO mode for automatic changeover and PROGRAM ON for scheduled operation.
How to adjust both heat and cool set temperatures simultaneously in Auto or Program mode.
How to adjust only the heat or cool set temperature in Heat or Cool mode.
Instructions for setting the thermostat's clock.
Instructions for setting the current day of the week.
Detailed steps for setting the clock time.
Detailed steps for setting the day of the week.
Explains how to configure the thermostat as programmable or non-programmable.
Details how to set the thermostat for manual or auto-changeover operation.
Guides on selecting the operational mode (Heat, Cool, Auto, Off).
Instructions for adjusting temperature setpoints.
Steps to select whether the thermostat operates as programmable or non-programmable.
Instructions for configuring the thermostat for manual or auto-changeover operation.
Describes available modes (Heating Only, Cooling Only, Off) for manual-changeover non-programmable thermostats.
Describes available modes (Heating Only, Cooling Only, Heating or Cooling AUTO, Off) for auto-changeover non-programmable thermostats.
Explains modes (Heating Only, Cooling Only, Time Schedule) for manual-changeover programmable thermostats.
Explains modes (Heating Only, Cooling Only, Heating or Cooling AUTO, Time Schedule) for auto-changeover programmable thermostats.
Step-by-step guide to setting up daily heating and cooling schedules.
How to set the start time and temperature setpoints for the Morning period.
How to set the start time and temperature setpoints for the Day period.
How to set start times and temperature setpoints for the Day period.
How to set the start time and temperature setpoints for the Evening period.
How to set start times and temperature setpoints for the Evening period.
How to set the start time and temperature setpoints for the Night period.
Setting up the programmable fan timer and operating hours.
Instructions for installing the optional Humidity Module.
Setting up the thermostat output jumper for humidity operation.
Setting the desired humidity level for humidification.
Setting the jumper to HUM for proper humidity operation.
Setting up the thermostat output jumper for dehumidification operation.
Setting the desired humidity level for dehumidification.
How to view heat pump and reversing valve jumper settings.
How to view the electric heat jumper setting.
Instructions on how to activate and use the Emergency Heat feature.
Setting the minimum temperature difference between heat and cool setpoints.
Limiting the number of times the HVAC unit may energize per hour.
Setting the temperature differential required to activate stages.
Setting the minimum time a stage must be on before the next stage activates.
Explains the conditions for turning on the 2nd stage of heat or cool.
Explains the conditions for turning on the 3rd stage of heat.
Adjusting the deadband for the first stage of heating or cooling.
Adjusting the deadband for the second stage of heating or cooling.
Adjusting the deadband for the third stage of heating.
Important warning about not placing multiple jumpers on the same MISC jumper block.
