How To Connect A Tam7 And Hhc Technical Service Bulletins

Hi All,

Messing around w/ my TAM7 (actually AAM7) and trying to sympathise existent word results. It is setup with a slide in hydronic coil and the RS-485 hydro control board. I have W1-W3 jumpered for max fan, but I would like to slow it down a bit to find the heating sweet spot (highest supply temp possible)

Here is what I know from manuals:

- there are iii dip switches on the hydro board. If Due west'south are not jumpered, changing these around seem to modify fan speed (putting all on = max fan) - this setting corresponds with an external hydro scroll box so possibly it needs the actress oomph
- There is a dip switch bank called S-2. Setting these will conform CFM/ton (both heating and cooling)
- In that location is too a separate dip switch banking concern which sets outdoor unit size and states a multiplier formula

Now questions:

- I have tried messing with all of these likewise as the jumpering W1-W3. I have an el-cheapo anemometer, simply when setting CFM/ton higher, I tin't sense any real divergence in air current speed. Is this setting more a volume affair than velocity?
- Will setting the OD unit multiplier affect the fan for total CFM? I but take a 2t outdoor unit. If I set it for 3t will it be fooled into blowing harder? I can't believe a max 800cfm fan tin be told to put out 1000cfm somehow.
- Are either of these settings affected past OTHER inputs... like maybe the hydro board or W1-W3 jumpers overrides them all? Or is it CFM/Ton x OD multiplier x W setting? Very disruptive.
- Either manner, I am getting way less than the manual listed output temps for the fan speeds. I know that it's a production of GPM'south, water temp, ideal conditions, etc, but how far off should I be? In some cases the manual says 130F and I'k getting 105F supply air. This is a DAT reading in a plenum maybe ten-12 inches downstream of the coil.

Sorry for the disruptive questions but the manual does a poor task of explaining the effects of the settings, and there are just too damned many options!

Thx for whatever help!

-
(not for a TAM7, but same idea on the multiplier)