Question about Cozy Enclosed Front Console Heater 70,000 btuh Natural Gas
On 1-25-08 my partner and I installed a brand new fan type wall
furnacein very old apartment building. After we got the old
furnace out and new furnace in place we realized that to make the new
furnace fit properly the bottomplate of the furnace would have to be
removed. I know that thisis not the thing to do but because of
existing vent, and no room forplay, we felt that we had no other
option. I personally thinkthat this could be part if not all of
our problem. I'm thinkingwith this plate missing furnace plenum
is not able to gererated enoughheat to activate my limit swithch to
power my fan. When T-Statcalls for heat burner flame ignites as
it should, but no fan. Ilet furnace cycle 3-4 times to really let
some heat generate inside ofplenum to see if limit switch would make
nothing. After a whilethe vent switch on the furnace which is NC
will open on temp. rise asit should to kick out gas to burner.
Jumped out swithch fan runsfine. Removed switch aswell to test
switch for proper operation,switch is closing on temp. rise, and
opening on temp fall as it isdesigned to do. Even though my limit
switch test ok, could itstill be faulty. Had another technician
that I work with to bringme another limit switch just in case it was
bad. Long story shorthe brought me a NC switch by accident, being
that it was getting late Iinstalled the NC switch to give customer
continuous fan operationthrought the weekend, so they would have
heat. I have ordered anew fan switch, but still not certain to
what is causing fanswitch/limit control not to close and complete
circuit to fan. Ifnew switch does not resolve problem, is it
possible to use anotherlimit switch that closes @ lower temp.
Existing switch is rated @120F-25F. Thanks for any assistance you
can give me.
If the snap switch is not located close enough to the plenum, this can be problem. The other option would be to cover the switch area with a metal shield or liatherm paper (fire rtardant paper).
Posted on Jan 29, 2008
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