Bryant T6_PRH_A07045 v. Evolution best

[MrObtuse]

Having bought a Bryant 288a Heat Pump , air handler, Evolution
thermostat I was eager for Mon 4/14 to arrive.
The installers from a reputable vendor brought with them an air
handler not configureable to the our furnace closet.
Oops, sales guy had measured, photographed the space.

The problem brought a supervisor out to our home, upshot being
a substitute air handler arrived Tues. The substitute
Bryant FV4BNB006, it was found late Tues, would not communicate
with the Evolution thermostat. Supervisor comment was something
like "you have 8 wires here* but have to have 9 to communicate."
Running new wire was not an option.

So, yesterday, T6 PRH A07045 thermostat was installed
instead of the Evolution. After hours trying and testing,
installers concluded they'd missed something in
the installation manual, or that new T6 PRH A07045 was
defective. So, last night we were on emergency heat,
and we wait for a repair guy today [Thu ] to replace the T6 PRH.

Does anyone have knowledge of the T6 PRH A07045?

Dave in Seattle 2008/04/17

[MrObtuse]

Case closed.
Bryant T6_PRH A07045 v. Evolution question is resolved. The T6
unit now "talks to" 288a. Credit allowed for part difference
was $125.Turns out our home was vendor's first install using a T6

Display is easy to read, simple to follow. T6 needs only 2 wires,
so overcame the problem of using other Thermidistat 9-wire units.
Re feature set--Evolution does a few things T6 doesn't do, but OK.

There *was* something tricky about wiring; super techs come to
house on day 4, spent 3 hours to make T6 talk to the Bryant 288a.
All in all 2 full days and 2 half-days to install.

Techs and electrician, later troubleshooter techs--all were great
in light of their having to work sans pre-inspection.
d_