Aprilaire 6504 owner manual Intelligent Sharing of Information, System Pressure Relief

INTELLIGENT SHARING OF INFORMATION

Your Intelligent Zoned Comfort Control System goes beyond the functionality already described to give you the ultimate in convenience. The system allows you to control, make changes, or monitor the following parameters from any one or all of your thermostats.

•Mode of operation – Heat, Cool, Off or Emergency Heat

•Fan operation

•Hold status: Temporary, Holiday or Permanent

•Outdoor temperature

•Indoor relative humidity

•Extend blower operation for enhanced humidifier operation

•Service Indicators

–Change air filter

–Service humidifier

–Change UV lamp

–HVAC service

You also have the ability to program the zones name or identification to personalize and simplify your system. Consult your Model 8570 Thermostat Owners’ Manual for details.

SYSTEM PRESSURE RELIEF

With a Zone Control System, some form of pressure relief must be designed into the system to assure proper operation and reduce the possibility of noise due to airflow. The method of pressure relief that has been designed into your system could include use of a bypass damper or the Aprilaire method of controlled pressure relief. With the controlled pressure relief method, a predetermined amount of air is allowed to pass through a closed damper. The amount of air that is passed by each damper (the bypass) is not enough to cause a noticeable temperature change in a non-calling zone, but is enough to relieve the higher system pressures.

So, if you feel small amounts of air entering into a non-calling zone, what you are feeling is the bypass air. Remember, this bypass is normal and provides pressure relief for the system without causing a noticeable change in temperature within that zone.

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