[QUOTE]Originally posted by beenthere
[B]With a txv, if you take your indoor wetbulb, you know what your keaving drybulb temp should be.
Does it get to set point but continue to run, or is the temp not coming down? [/B
braburn t-stat 5000, last night temp was 75 t-stat read 75 unit still running. lowered temp to 71 and let run for 24 hours unit got to 72 degrees, raised temp to 74 degrees and unit shut off, i don't think tstat is the problem, again why is subcooling relatively low and superheat low, I still feel that TXV is opening too much, please help.......lol
Originally posted by joe2003 Does a TXV bulb need to be insulated if it is inside the plenum on the outlet of the evaporator?? I have a new replacement that has low cooling and the unit runs all the time. I spoke of this unit in a post earlier today but didn,t get but 1 reply...lol. If I add r22 to system or take it out my suction pressure stays at 75 pounds. Could the problem be that the bulb is not insulated, it came from the factory like that, should it be insulated?? This is a Tempstar coil.
On my Carrier FV4A fan coil it says the TXV sensing bulb must be insulated on slope coils in horizontal right and downflow applications. Failure to insulate bulb will result in performance loss. Hope this helps