Honeywell AQ1000TP2 Owners Guide - Page 8
Setting the system Heat/Cool mode
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Setting the system Heat/Cool mode Press the SYSTEM button to place the system in one of the following modes of operation: Cool mode The air cooling system is on. Heat mode The hydronic heating system is on. System mode indicator SYSTEM button Auto mode The system is in automatic changeover mode. This means the thermostat switches between heating mode and cooling mode to maintain the desired temperature. Cooling starts when the temperature rises and stays above the cooling setpoint for 15 minutes. Heating starts when the temperature drops and stays below the heating setpoint for 15 minutes. NOTE: In Hold mode, where you enter only one setpoint, if you set the temperature when the thermostat is in heat mode, it becomes the heating setpoint and the cooling setpoint is equal to the heating setpoint plus 2 °F (1 °C). If you set the temperature when the thermostat is in cool mode, it becomes the cooling setpoint and the heating setpoint is equal to the cooling setpoint minus 2 °F (1 °C). Off All cooling and heating are off. A thermostat can activate heating and cooling at the same time when configured in AF mode. This happens when heating is required to bring the floor above the minimum floor limit and, at the same time, cooling is required as the ambient air above the setpoint temperature. This can be prevented by raising the cooling setpoint and/or lowering the minimum floor limit. 5 69-2245EF