"HvacTech2" wrote in message
...


Hi You, hope you are having a nice day

On 12-Mar-04 At About 22:37:46, You Asked wrote to All
Subject: Digital Thermostat

YA From: "You Asked"

YA "john" wrote in message
YA om...

YA The "wear" from startup of an A/C compressor is higher, but you
YA can virtually eliminate that "wear" by adding hard-start kit to the
YA compressor.

This statement is not quite true. any time a compressor starts there is
wear
on the windings and the hard start will not change this in any way. it
does
help it start under high pressure conditions but does not in any way keep
the
windings from expanding during startup.


-= HvacTech2 =-


Also, lets not forget that nothing is going to stop the rings, and pistons
and such from wear, short of shutting the unit off forever.
Personal experence shows that when you add the hard start, you are asking
for a failure. If the compressor has gotten to the point that a normal cap
will not start and keep it running, you have the wear already on the
windings, and arm that are telling an experenced tech its time to do
something other than keep putting a bandaide on the problem.

Repeated start and stops will indeed increase wear, and add to the overall
cost of ownership....however, depending on the OPs particular stat from
Honeywell, it may well simply be the initiall learning period of the Smart
Recovery learning its program, since they use a fuzzy logic controller that
will vary the start and stop times a bit and this will go away after the
program as learned and will gradually change as the needs change.
Of course, he may also have the cycle per hour setting incorrect, and as we
all know in the trade, hydronic systems can be a bitch to set up with
digital stats from time to time.


.. "Ever stop to think and then forget to start again?" - s.w.

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