6. BLOWER EXTENSION FOR HUMIDITY CONTROL
If the heating equipment has not run long enough to allow the humidifier to meet the humidity demand, the thermostat will continue the blower after a heat call. One second before the thermostat turns off the heating terminal(s), the fan terminal will be energized thus extending blower operation. If the fan terminal was on as part of the heat call it will remain on, if it was not on it will be turned on. The thermostat will operate the blower for no less than 5 minutes after the heat call and not more than 15 minutes. This will allow the humidifier to continue to put moisture in the air to satisfy the humidity demand. This feature can be enabled or disabled and can only be used when an AHC is part of the installation.
Note: To take full advantage of this feature, the humidifier should be plumbed to hot water.
To enable blower extension:
1.Make sure the thermostat is in the OFF mode.
2.Press and hold both the ▲ and ▼ buttons for 3 seconds.
– The display will show the ADV. SETTINGS MENU.
3.Use the ▲ or ▼ button to highlight “BLOWER EXTENSION” and press the SELECT button.
4.To cancel, press the BACK button
5.To change whether Blower Extension is enabled (on) or disabled (off), press the ▲ or ▼ button to highlight either ON or OFF.
6.To finish and return to the ADV. SETTINGS MENU, press the SELECT button.
Important: When the thermostat is installed as part of a Model 6504 Intelligent Zone System, leave this feature disabled. The Model 6504 performs this function.
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