4
What to Expect From the TOWER of POWER
tm
:
The TOWER of POWER
tm
control system is a very precise instrument that has been developed to provide
exceptional control over a very broad range of batch sizes, flow rates, and input heat values without the need
to re-tune as each individual condition changes. However, it DOES require a reasonable set of parameters to
be met to achieve these results. When operated within the parameters listed in the previous section, your
system should be able to maintain your mash and HLT temperature to within 0.5 F (0.25C) of your set point.
Please note that in the case of mash control, we are controlling the temperature of the wort into the top of the
mash bed, not the temperature of the mash itself. The large mass of the mash will dampen out the
fluctuations of the recirculation temperature and provide incredible stability. If you are not able to achieve
the conditions above with your system that is OK, but it must be expected that stability and control will be
compromised.
Note:
A slight overshoot of the recirculation temperature is normal and will NOT harm your enzymes.
Enzymes are denatured over a period of time, not instantaneously. We have tuned this system to offer the
best match of ramp speed and stability.
The chart below shows a typical response curve from an actual brew session.
Note that the mash temp
will lag behind the recirculation temp by a few degrees as you ramp, but will settle in quickly as you reach the
set point. Also note that the recirculation temperature (displayed on your controller) will overshoot by a few
degrees. This is NORMAL. Also note that the actual mash temp overshoots very little and settles in quickly to
set point, drifting slightly within the +/- 0.5F tolerance band. While we could eliminate the recirculation temp
overshoot it would severely slow down your ramp rate.
110
115
120
125
130
135
140
145
150
155
160
0.0
3.3
6.7
10.0
13.3
16.7
20.0
23.3
26.7
30.0
33.3
36.7
40.0
43.3
Mash
Bed
Recirc
Stabili/
‐
0.5F
Time
(min)
