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Posted by daytona° on June 24, 2007, 7:18 pm
An XV model has a variable speed DC voltage blower motor that will run
(factory default) 50% cfm of the A/C cooling cfm speed that the PC board dip
switches are set at.
NOW for layman's terms....turn the t-stat switch the says "FAN" AUTO-ON to
ON...meaning the fan will run continuously at the 50% cfm of the cooling set
cfm
FOR EXAMPLE: if you have a 30,000 BTU A/C system, the dip switches must
likely are set at 400 cfm per ton, this equals out to 1000 cfm cooling mode,
so when the fan is on the "ON" position it will deliver 500 cfm.
NOW if that is not enough air flow there can be adjustments made to the PC
board ....it can be set at 40% or 80% or 100% air flow of the cooling set
point
FOR HUMIDITY control, the cfm can be set lower or a humidistat added to the
system
NOW, I hope this answers your questions, since your HVAC tech or company can
not
> Can the Trane without AC be used to circulate household air with the
> right thermostat?
>
> Looking for an answer to this question before I talk to a dealer about
> bigger options. We had a high efficiency XV90 installed last year after
> getting a few quotes on different units. Our house is older and suffers
> from high humidity downstairs(basement) and I want to circulate the air
> around the house. As we live in Edmonton Canada, we dont feel the need for
> AC, in fact, if we could balance the cool downstairs with the warmer
> upstairs, it would be close to ideal. This could be done by a manual
> blower switch on my old furnace.
> Can the Trane be run in blower mode only using the proper thermostat or do
> we need some type of AC/Air filtration unit? The contractor said that we
> didnt need a new thermostat as we had a digital one but over the past
> year, we have found out that its a single stage that doesnt properly
> control the fiurnace( No variable speed. 2 stage works on furnace internal
> 5 minute default. So much for top of the line!! I suspect the contractor
> said it would work fine to keep this cost down and get the install.)
> Thanks for the advice
> Jeff
>
>
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