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  1. Residential HVAC Forum
    I'm installing a new Daikin 4MXL (36K BTU) outdoor compressor, with 24K and 9K indoor unit (I previously installed a smaller dual zone Daikin) One of new indoor unit's lineset will be behind drywall, so I cut off flare joints and to solder on sleeves. So I need to nitrogen purge. I have a...
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