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Posted by geojr on February 14, 2007, 3:02 pm
> Dear Rich,
> With the temp being 9 degrees outside, it seems like your sub
> cooling is a bit much. I presume your condensing units are
> outdoors?
>
> When I specced some commercial equipment a year or so ago,
> they suggested a "headmaster". Which is sure to get some laughs
> on this forum (Stormy getting head?). Essentially what it was, a
> temp controlled switch that turns the condensor fan on and off.
> When it's this seriously cold outside, it's possible for the
> refrigerant to come through the liquid line at, well, 9F. Since
> that's the outdoor temp. If the liquid line is too cold, the
> liquid refrigerant isn't under enough pressure to properly
> vaporize. So, it kinda lays there.
Stormy a headmaster is not a temp controlled switch, your talking about a
condenser fan cycling switch- two completely different components.
> And it may have the other problems like solder blockage. But
> since it was Ok a few months ago, maybe it's the outdoor cold.
> And, a super low outdoor temp may be faking you out, to think
> it's low charge.
>
> --
>
> Christopher A. Young
> You can't shout down a troll.
> You have to starve them.
> .
>
> : I've heard of it, but never have seen it until this week.
> :
> : Last week, a walk in freezer low on gas had over an inch of ice
> on the
> : liquid line and non on the suction, 9 degrees outside box was
> 49F
> :
> : This week, homeowner called and said water all over the floor
> of his
> : basement. I go over there and the air conditioners liquid line
> has over 1
> : inch on it about five feet from the outside wall, and over two
> inch's
> : outside. Now this is interesting........... Oh, the unit
> wasn't running.
> :
> : Will a TXV take care of this problem or do I need to install a
> solenoid
> : valve? I wonder how much energy is lost in a years time with
> this transfer
> : of heat from a forced air unit to the condenser? But what is
> confusing, 3/8
> : inch liquid line acting like a cap tube? You would not think
> there would be
> : a pressure difference in such large lines on the outlet of a
> condenser.
> : Hmm, wonder if they soldiered the line almost closed when they
> installed
> : this, the entire installation is a mess as it is.
> :
> : Rich
> :
> :
>
>
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