I need a replacement heat pump for my 2nd zone. Having read here about the
RFI problems associated with variable-speed blower motors and their PWM
drive, I told my HVAC contractor that I would not accept a variable speed
He proposes a system with a Trane 4TEH3F24 air handler. This unit does not
have a variable speed motor, yet it is 15 SEER, which will allow me to get
the Federal tax credit.
The Trane brochure says this model has four fixed speeds. I have examined
what I can find by Googling this model, and the blower motor is connected
directly to the 240VAC source, but there is a control wire that goes to an
"ER" (electronic relay) unit. I can't find a schematic of the ER unit on the
Internet. I have e-mailed a Trane contact given to me by my HVAC contractor,
and asked for information on, or a schematic of, this ER unit.
Does anyone here have experience with a Trane inside air handler with "TEH"
in the model number? Are there any RFI problems?
Thanks and 73,
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