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Automation FAQ Sponsored by Creative Control Concepts |
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 Home Automation FAQ : HVAC Control : Zoning : Dampers :
Why are many zone panels incompatible with zone dampers from Carrier? |
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Most zone dampers are simple to operate. They use a spring to open themselves and you apply power to a motor to close them. When you remove power, the spring opens the damper. This is a nice safeguard to ensure the dampers open up and heat the whole house if a motor malfunctions. Thus they are easy to control. Apply 24VAC to close, remove it to open. (Note some dampers operate int eh opposite manner where they spring closed and use power to open)
Many Carrier dampers use a more involved control technique. They are capable of opening a damper gradually or in steps, meaning the motor can be modulated to open a damper 25%, 50%, etc. This allows for better control of the airflow, but requires more smarts from a zone panel and also more involved control. Thus, these types of dampers will require special zone control panels. When in doubt, contact your equipment supplier or HVAC contractor/installer.
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We have a Carrier three zone gas furnace. Twice in the past year or so we've awakened with our basement level at 100 degrees (literally)and the furnace furiously pumping out more heat. This continues until I flip the breaker off and it resets itself. I am concerned that this is a hazard not only to my bank account, but also to drying out my framing, cracking my drywall and worse. This morning my infrared thermometer regisgered 110 degrees on the drywall about a foot from the vent. It was suggested the last time that this could possibly be triggered by my wireless router signal. The zone board was replaced the last time this happened and it behaved for a while. If related to wireless router why does it happen only occassionally when the router is on 24/7? And why does it always happen to the basement zone. I can only assume that the HVAC person checked the thermostat. What can be done to prevent this.
Don
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