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  1. #1
    Join Date
    Jan 2008
    Location
    LEHIGH VALLEY, PA
    Posts
    166

    rheem and economisers

    A Rheem 5 ton heat pump rtu , a couple of months old . An economiser was added to the unit , controlled via enthalpy on the damper inlet and a temp sensor. The site maintenace guy has found the econmiser opens up to 45 deg , even on very cold days , allowing a lot of cold air in to the office below. all settings as per rheem , checked another installed at the same time and the same thing is happening , ?, can you give me some advice please .

  2. #2
    Join Date
    Apr 2012
    Location
    winnipeg
    Posts
    1,330
    what is the minimum pot set at......
    it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair

  3. #3
    Join Date
    Jan 2008
    Location
    LEHIGH VALLEY, PA
    Posts
    166
    Set at minimum position , i am new to rtu,s always worked on refrigeration and ductless systems , my understanding of the economiser , is that if the outdoor air conditions are good as checked by the enthalpy and temp sensor , when the system is in A/C, the damper will open and let outside air in for ;free cooling;, why is it operating in heating mode [heat pump] , thanks jim

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