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  1. Residential HVAC Forum
    I have a single stage gas furnace in our wood shop that heats the main area and a storage / tools area. The furnace is connected to two nest thermostats and a honeywell HZ322 zone control unit. I want to add a 24v AC relay to the zone control to turn on a circulation fan at the far end of the...
  2. Residential HVAC Forum
    <P>I am working on a old Heil gas furnace and it's not heating.  The ignitor sparks and only lites the pilot area, the burners never try to start. I am not familiar with this type of ignitor, I tried cleaning the flame sensor but didn't correct it.  I figure it needs replacing. Any ideas.  Btw...
  3. Residential HVAC Forum
    Hows it going? I recently.installed two honeywell ARD dampers one is a 10" and the other 8" when i cut on the thermostats to open both dampers only one opens if i shut off the opened dampers thermostat it closes alowing the other to open. Any ideas on what could be causing this? Too much air...
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