Blichmann Engineering TOWER of POWER Quick guide

TOWER of POWER
tm
Modular Brewing Control System
Operation, Assembly & Maintenance Manual
Congratulations on your purchase, and thank you for selecting the TOWER of POWER
tm
Modular Brewing
Control system from Blichmann Engineering
tm
. We are confident that it will provide you years of service and
many gallons of outstanding beer. This manual will familiarize you with the assembly, installation
procedures, and use of the TopTier
tm
brew stand and accessories.
**** PLEASE READ THOROUGHLY PRIOR TO USE FOR IMPORTANT SAFETY INFORMATION ****
IMPORTANT !!
Warning: Sections labeled “Warning” can lead to serious injury or death if not followed. Please read
these thoroughly and understand them completely before use. If you do not understand them
or have any questions, contact your retailer or Blichmann Engineering
tm
(www.BlichmannEngineering.com) before use. Do NOT at ANY time operate the product until
you have thoroughly read and understood these instructions!
Caution: Sections labeled “Caution” can lead to equipment damage or unsatisfactory performance of the
equipment. Please read these sections thoroughly. If you have any questions, contact your
retailer or Blichmann Engineering (www.BlichmannEngineering.com) before use.
Important: Sections labeled “Important” are critical to the proper performance and life of the product.
Service & Support: Please thoroughly read this manual and view our online videos before contacting
your retailer with questions. If after reading this manual and viewing the videos you still have questions
please contact your RETAILER for support. Note that the pump is warranted and supported through March
Manufacturing directly, not through your retailer or Blichmann Engineering
tm
.
Advanced features (automatic ramping) are accessible through software only and requires the purchase of an
optional communication cable. Due to the advanced nature we do not provide direct factory support. Please
work through your RETAILER if you have any questions after reading the manuals or viewing the online
tutorial.

2
Overview of Tower and Control Modules:
The TOWER of POWERtm Modular Brewing Control is, by name, modular in nature. The user can purchase a
single or dual control module separately and mount and integrate into their brewing system plumbing. Or if
the user does not have the necessary valving, pumps etc., they can purchase the Tower module that provides
all the needed plumbing and provides a convenient stand for the control module(s). If you already own a
March 809/815 pump you can purchase the Tower without the pump.
Note: the hoses that connect from the Tower to the pots are not included. If you are a TopTiertm owner, an
optional mounting kit is available to mount it permanently to the stand.
Controller Module
Mash and HLT
labels provided
Sample port
Pump
Flow meter
3-way valve
Tower with dual controllers

3
Requirements Of Your System:
IMPORTANT! Read before unpacking or using this product!
For the TOWER of POWERtm control system to function properly, your brewing system must meet
some basic requirements. If your system is unable to meet these requirements please contact your
RETAILER for guidance. We cannot guarantee the performance of the product if these basic
minimums are not met.
Hot liquor tanks perform well on nearly any system that can maintain a moderate flame. Mash Tuns require
a couple basic performance parameters to be met for proper performance.
Important! Do not use or install the TOWER of POWERtm equipment until you verify that your equipment is
capable of the requirements below. If you are using Blichmann Engineering BoilerMakertm mash tun with our
false bottom, and a TopTiertm burner you will not have equipment limitations. However, it is still important
that you verify that your crush will allow adequate wort flow! Most stuck mashes are caused by too fine of a
crush. It is also expected that
Your mashing system must have the capability to continuously recirculate your wort using a pump for the
duration of the mash without sticking. The flow rates in the chart below are minimum values.
Finished Batch Size gal (L) Min Flow GPM (LPM)
5 (19) 0.5 (2.8)
10 (38) 0.75 (3.8)
15 (57) 1.25 (4.75)
20 (76) 1.5 (5.7)
32 (121) 2.25 (8.5)
Important: Grain bed flow rates are highly dependent on crush quality. Move to a coarser crush if you are
not able to flow at the above rates. It is also recommended that you allow a 10 min dough-in prior to turning
on the pump to allow the air to purge from the grain and for the grain to fully absorb the water.
Burner Requirement: Your burner must be capable of operating well at low power settings. If you cannot
maintain a flame at about half power your system stability will suffer. Specifically, you should be able to
reduce your heat to achieve an average heating rate of 1.5 F/min or less. To do this, recirculate your wort at
the above rates or faster (use a stop watch and known volume to measure flow rate). Then apply heat on your
burner at the lowest stable level. If over a 20-30 min period the increase in wort temperature divided by the
time is at or below 1.5 F/min you have met this requirement.
Fuel Supply: The solenoid valve supplied is suitable for up to 25 PSI propane regulators and residential
natural gas. Fuel flow rate through this valve is adequate to power Blichmann Engineering TopTiertm burners
on both fuels, however, other burners may need a larger solenoid valve (not included). Do NOT install a
solenoid valve that draws over 2A at 120V including inrush or you may damage the ignition start relay which
is NOT a warrantable failure.

4
What to Expect From the TOWER of POWERtm:
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
StabilityBand +/‐0.5F
Time(min)

5
It is expected that control stability will change slightly as you change your batch size, flow rate, or heat input.
In general:
Faster flow rates reduce oscillation and overshoot
Lower heat input reduces oscillation and overshoot, but increases heating time
Higher heat rates increase overshoot and oscillation – shoot for 1.5F/min
Larger batch sizes generally exhibit less oscillation and overshoot
That said, doing small batches on a system intended for large batch sizes will usually be difficult to control. If
this is unavoidable, use the largest water to grist ratio possible, and use the lowest heat setting on your
burner, and be ready to accept control outside the +/- 0.5F band.
It is also expected that you will need to do a few experimental batches to dial in your specific system and
become familiar with the operation and control of your system. You will quickly learn the flame height that
results in a 1.5 F/min average ramp rate in your mash bed. You will also discover what flow rates you can
achieve without sticking your mash. Note that rice hulls can aid in increasing recirculation rates.
Assembly:
The TOWER of POWERtm Modular Brewing Control ships partially assembled to allow it to be shipped more
economically via ground carriers, and to protect it from shipping damage.
Parts List:
The following items are shipped with the product. Please check to verify that you received all the parts.
Contact your RETAILER if any parts are missing. Blichmann part number is in parentheses.
Digital Control Module
1 Control Module
1 Gas solenoid valve (TOP-016-00)
1 Solenoid power cord (TOP-017-00)
1 Male ¼ NPT X 3/8” Male Flare brass adapter (BE-500008)
1 Male ¼ NPT X 3/8” Female Flare brass adapter (BE-500009)
1 Ignition electrode (TOP-020-00)
1 Screw - #8-32 with nut (installed on electrode)
1 Ignition wire (TOP-019-00)
1 Temperature sensor (TOP-001-05)
1 O-ring (sensor) (BE-00083) – installed on sensor
1 O-ring retainer (washer) (BE-00084) – installed on sensor
1 Nut – ½-20 UNF SS (BE-000026) – installed on sensor
1 Decal – HLT (BE-00062)
1 Decal – MASH (BE-00063)
1 1/2NPT X ½-20 UNF stainless bushing (TOP-007-01)
4 Rubber feet (installed) BE-500013-00
6 Reusable plastic Wire twist ties - small McMaster 70535K52
6 Reusable plastic Wire twist ties - large McMaster 70535K53

6
Optional Tower Stand
1 – Tower assembly (enclosure, plumbing manifold, valves, flow meter)
1 – Grommet – pump wire, installed McMaster 9600K33
1 – Grommet – flow switch wire, installed McMaster 9600K15
2 – Legs, LH (TOP-003-03-LEGSET, one RH and one LH per set)
2 – Legs, RH
4 – Leveling feet BE5000012-00
2 – Leg stiffening plates (3” X 2-1/4” plate with 2 holes)
1 – Pump mounting bracket (replacement order: aTopTier_Pump_Bkt Includes plate, drip shield, hardware)
1 – Pump drip shield
8 – ¼-20 X3/4” L hex bolts, nuts and washers
2 – 5/16 X 3/4” hex bolts
4 - #10-24 X 3/8” L pan head screws
1 – Hose assembly (silicone hose and 2 QuickConnector aQC_12_S)
1 – 3/8” 90 deg QuickConnector fitting (aQC_38_EL)
1 – 1/2” 90 deg QuickConnector fitting (aQC_12_EL)
1 – Pump – March 815 (if ordered with Tower)
Optional Dual Controller Mounting Plate (reqd for mounting two controllers onto the tower)
1 - Plate (model aCon_plate_TOP)
4 - #10-24 X 3/8” long pan head screws
Assembling the Tower
Prepare a work area with a soft pad to protect the tower enclosure from getting scratched during assembly.
WARNING! –Make sure that the tower is NOT plugged in until you have fully completed the assembly!
Electric shock is possible while wiring the pump!
Begin by unpacking and spreading out the parts. Install the legs to the bottom of the tower using the ¼-20
bolts, nuts and washers as shown in Fig 1a and 1b. Please note that there are two LH legs, and two RH legs.
One of each leg is installed on each side of the enclosure. Make sure to install the rectangular leg stiffening
plate on the INSIDE of the enclosure. Next thread a leveling foot into the end of each leg as shown in Fig 3.
Fig 1bFig 1a

7
Install the pump bracket using the 5/16” bolts as shown in Fig. 4. Then using the ¼-20 X ½” bolts, nuts and
washers, install the drip shield and pump as shown in Fig. 5.
Important: Referencing Fig. 7, it may be necessary to re-orient the pump head to so that the inlet faces down
and the outlet faces up (flow arrow faces up). Simply remove the 4 mounting screws, rotate the head, and
reinstall the pump head. Consult the March manual if needed.
To wire the pump, insert the pump lead wire through the rubber grommet in the back of the enclosure and
feed it out the bottom of the enclosure (Fig. 6).
Fig 3 Fig 4
Fig 5
Fig 6
Drip Shield
Fig 7 Fig 8
Place pump wire
through grommet

8
TIP! It may be helpful to use needle nose pliers or use the end of a coat hanger to pull the wire out if you
cannot reach it with your fingers. Spray the pump wire with a little Windex so that is slides easily through the
grommet.
Remove the wire nuts from the green, black and white wires that are labeled “pump power” and connect them
to the matching color leads on the pump lead using the wire nuts as shown in Fig 8. Then push the
remaining wire up into the bottom of the tower.
Install the pump hose between the pump and the bottom of the flow meter as shown in Fig. 9.
Install the ½” 90 degree QuickConnector onto the bottom of the pump. Fig. 10
Install the 3/8” 90 degree QuickConnector onto the sampling port valve. Fig. 11
Assembly of the Tower is now complete!
Fig 9 Fig 10
Fig 11

9
Installing Single Control Module On The Tower
Using 4 #10 X 3/8” screws install the control module as shown in Fig 12
installing the screws through the through the mating holes in the angle
brackets on the top of the Tower.
TIP! Using a long Phillips screwdriver or a ratcheting or 90 deg screwdriver
makes accessing the front two screws easier.
Plug the controller into the GFCI receptacle on the back of the tower.
Installing Dual Control Module Onto The Tower
Using 4 #10 X 3/8” screws install each control module onto the adapter
plate as shown in Fig 13 using the outer most 4 screw holes. Then use an
additional 4 screws to mount the assembly onto the tower as shown in Fig
12 using the inner 4 screw holes and placing the screws through the
mating holes in the angle brackets on the top of the Tower.
Plug each controller into the GFCI receptacle on the back of the tower.
WARNING! –Make sure that the tower is NOT plugged in until you have fully connected the ignition and
ground wires or electric shock could occur from the ignition wire!
NOTE: An optional mounting kit is available for installing the TOWER of POWERtm onto the TopTiertm
modular brewing stand as shown in Fig 14.
That completes the assembly of the tower and control modules!
Screws
Long
Screw
Drive
r
Fig 12
Fig 13
Fig 14

10
Connecting the Controllers to Your System:
WARNING! –Make sure that the tower is NOT plugged in until you have fully connected the ignition and
ground wires or electric shock could occur from the ignition wire!
CAUTION! –Heat damages electronics. Locate the control units, solenoid valves, tower and wiring as far
from heat sources (burners) as possible. You should never feel your control modules getting warm to the
touch. If they do, they are too close to heat sources! The maximum surface temperature should never exceed
125F (52C). While the solenoid valves will get somewhat warm during operation they should never be
uncomfortably hot to the touch. Locate them as far from the heat source as possible.
Caution! Always route wires away from heat sources and hot surfaces to prevent burning and short circuits.
Important Warranty Information! Electronics damaged from excessive heat are not covered under
warranty! We have installed a non-reversible heat detector inside the control enclosure to detect excessive
heat. There are no user-serviceable components inside of the enclosure. Tamper labels that have been
removed or damaged will void your warranty.
Never Do These Things!
NEVER LEAVE THIS EQUIPMENT UNATTENDED
NEVER ALLOW CHILDREN NEAR THIS EQUIPMENT
NEVER Expose to heat or moisture. If it is warm to the touch it is too close to heat source.
NEVER HEAT COOKING OIL WITH THIS EQUIPMENT
NEVER operate on soft, combustible or uneven surfaces like dirt, gravel, wood or asphalt
NEVER operate indoors, in a garage, under an overhang, porch, deck, carport or similar structure
NEVER use near and combustible chemicals, gasoline or other flammable vapors or liquids
NEVER Bypass the GFCI circuit protection
NEVER Exceed 125F (52C) surface temperature
NEVER use the gas solenoid valve as a normal shutoff
Always Do These Things!
ALWAYS OPERATE OUTSIDE ONLY, AT LEAST 30FT FROM OTHER STRUCTURES
ALWAYS USE ONLY ON LEVEL AND STABLE CONCRETE, BRICK OR SIMILAR HARD NON-FLAMMABLE
SURFACES.
ALWAYS Connect to a GFCI circuit
ALWAYS Check that all fasteners are properly tightened prior to each use
ALWAYS Ensure that the base of the tower is resting on a hard surface
ALWAYS Use the propane tank shutoff valve or a separate valve when not in use
ALWAYS Use genuine Blichmann Engineering replacement parts
Install the gas solenoid valve:
The gas solenoid valve is turned on and off by the controller as needed to maintain the temperature of the
tank. Locate it as close to the burner as possible but DO NOT locate it in an area that will expose it to
excessive heat. If you can’t comfortably rest your hand on the valve during operation it is too hot! We have
included a male and a female flare X ¼” NPT fitting to aid you in connecting the valve to your gas supply.

11
Note: Depending on the gas supply you have, you may need to procure additional or different fittings which
are not included with the product. In ALL cases, follow your local codes and regulations. If you are not
familiar with the local requirements, or are not comfortable doing this work yourself, we would recommend
hiring a professional to do this for you.
Fig 16 shows a typical installation. Note that it is permissible to install the solenoid valve immediately after
the regulator on the propane tank.
Important! Valve failures from excessive heat are not covered under warranty!
Warning! Install the valve with the gas flow going in the direction of the arrow marked on the valve. Fig 15.
Installing it backwards can result in poor and/or unsafe operation! The inlet will also be marked with a “1”
and the outlet with a “2”.
Warning! DO NOT use the solenoid valve as a normal shutoff for the gas! ALWAYS turn the propane tank or
gas valve off at the source when not in use!
Fig 16 and 17 show typical installations.
Important: The brass orifice fitting (small hole
through it) supplied with your burner must ALWAYS be
installed directly on the burner casting. Do NOT install
this fitting on the inlet to the regulator or your burner
will not function properly!
Install the ignition electrode:
The ignition electrode is used to create a spark to automatically ignite the gas and is activated by the
controller. It also lets the controller know if a flame is present.
Important! For reliable operation it is important to install the electrode properly!
We have provided an electrode that can easily be modified (cut and/or bent) to fit nearly all burners. You will
need to drill two holes to fasten and ground the electrode to the burner frame. Place two marks 3/8” (10mm)
in apart and about 1 inch above the surface of the burner. Strike both marks with a center punch. Drill one
at 3/8” and the other at 3/16”. Typical installations are shown in fig 18 and 19. If you are installing in a
Flow
Direction
TopTier
Installation
Fig 15 Fig 16
Fig 17
Orifice
Fitting
1 2

12
Blichmann Engineering TopTier burner simply use the flame inspection hole (Fig 19) and only one 3/16” hole
is needed. New TopTier burners will have all mounting holes provided. Earlier models will require drilling the
3/16” hole.
TIP: Stainless steel can be challenging to drill – use a cobalt or TiN coated (gold color) bit to drill the 3/16”
hole. McMaster Carr part number 2973A19 is a recommended carbide tipped sheet metal drill if a typical
steel, coated or cobalt drill bit is not successful.
Mark the electrode wire with a marker so that when bent 90 deg downward it will be in the center of the flame
path. For TopTier burners, you’ll want the electrode centered over one of the burner nozzles. Measure the
distance from the surface of the burner to the mark on the wire and note this distance. Remove the electrode
from the frame and using a pliers bend the wire down 90 deg. Install with the included #8-32 X 3/8” screw.
Important! The tip of the electrode must be perpendicular to the surface of the burner and must be in the
flame path to function properly! A spark gap of 3/16-1/4” (5-6mm) is needed for consistent ignition.
Caution! Do not hold the electrode by the ceramic insulator and take care not to crack the insulator!
Cracked electrodes are not covered under warranty!
Trim the wire using a wire cutter to the length noted previously. Install the electrode and note the position of
tip of the wire with respect to the surface of the burner. Trim as needed to provide a 3/16-1/4” gap. It is OK
to bend the wire a bit as needed to center the tip of the electrode. Fig 18 and 19 show typical installations.
Install the Temperature Sensor (RTD):
Caution! The sensor provided with the product is a very high accuracy instrument. Please treat it with care!
Do NOT pull on the lead wire or over-tighten the fitting.
Installing in a Hot Liquor Tank:
For the HLT install the sensor directly into the hot liquor tank. Since water convects easily it is not necessary
to recirculate with a pump. Simply drilling a 0.50 inch diameter hole, or it can be installed in a ½” NPT fitting
already welded into your tank using the supplied adapter bushing (directions below).
Determine the desired location for the sensor and mark the center point with a permanent marker. We
recommend installing it about in the middle of the water level. Drill a 3/16 pilot hole and then enlarge it to
½” (+0.015, - 0.010) using a “step drill” as shown in Fig. 1. Step drills are available through any hardware
store or home improvement store. After the hole is drilled, ensure both sides of the hole are free from burrs,
Fig 18 Fig 19
3/16-1/4” gap

13
which will cut the o-ring leading to potential leaks. The step drill can be used to chamfer (deburr) the hole on
either side or you can use a file.
Important! The o-ring goes on the OUTSIDE of the pot. Installing it on the inside of the pot will cause it to
leak!!
Assemble the sensor as shown in Fig. 2, tightening the nut snugly using wrenches, but do not use excessive
force. Do not use pipe tape on the threads.
Installing in an NPT Fitting:
To install the sensor into a female NPT fitting place the o-ring, washer, and adapter bushing onto the sensor
as shown in Fig. 22. Place 4-5 turns of quality Teflon tape (not included) to the external NPT threads of the
bushing. Do not use tape on the sensor threads. Then thread the assembly into the fitting.
Caution! Once installed, the bushing CANNOT be removed! DO NOT over-tighten! Use a ¾” wrench to
tighten the sensor and thread it into the NPT fitting. When the washer is flush with the fitting as shown in
Fog 23 STOP. It is not necessary to fully torque this joint to seal! Additional bushings may be purchased
through your retailer.
Fig. 20
Bushing
Fig. 21
O-ring and
washer on
outside of pot!
Fig. 22 Fig. 23

14
Installing Sensor & Plumbing For Mash Control:
Important! Do not install the sensor directly into a mash tun!
The grain greatly impedes the convection and transfer of heat.
It is VITAL to the performance of the product that the sensor be
installed so that it is measuring the temperature of the wort
returning to the top of the mash bed. Installing the sensor
directly into the mash tun will cause severe overshooting,
oscillation, scorched wort, and possibly equipment damage!!
If you have purchased the Tower stand: install the sensor for
the MASH controller in the port indicated in Fig. 24. Note that
the HLT sensor will be mounted directly in the hot liquor tank.
Tip! We recommend ½” (12mm) ID hose for connecting the Tower to
your system. Silicone hose, while expensive, will last a lifetime and
can withstand continuous use at boiling temperatures. We
recommend 3/4” OD thick wall hose.
Warning! ALWAYS use hose clamps on all hoses!
Connecting to other systems: Refer to the schematic of Fig 25. It is
VITAL to the performance of the system to connect it in this manner.
Connect the outlet valve of your mash tun to the inlet of the pump.
Install a flow control valve after the pump. Then plumb through the
sensor, and lastly back to the TOP of the mash bed. Note – it is also
acceptable to switch the order of the flow control valve and the sensor.
Installing the sensor in your own system: locate the sensor
according to the schematic in Fig. 25. A close-up of the sensor
installed in a pipe T (not included but available through
McMaster.com 4464KK51 if needed) is shown in Fig 26. Note
that the tip of the sensor must protrude into the middle of flow
cavity for it to accurately measure the wort temperature.
Installing an AutoSpargetm in your system: We highly
recommend using the Blichmann Engineering AutoSpargetm for
this application (Fig 27) which is available separately. Lastly,
connect the remaining fitting on the 3-way valve to the inlet of
your brew pot.
Tip! As shown in Fig 27 place a pipe T (not included but available
through McMaster.com 4464KK51 if needed) on the inlet of the
AutoSpargetm. This will allow you to connect it to the HLT and the
mash recirculation simultaneously with no need to switch hoses at
sparge time! A valve is not needed on the elbow since the valve on
the HLT will stop wort from flowing that direction.
Fig. 26
Fig. 24
Sensor
Center
From HLT
From Pump
Fig. 25
Fig. 27

15
Connecting the Controller To Your System:
Fig 29a, and 29b show the front and rear of the controller. Connect
as directed below.
1 – Solenoid power out (switched on/off) 2A max, 120V 60hz
2 – Communications cable (cable sold separately)
3 – RTD Temperature sensor
4 – 120V 60 Hz power cable
5 – Ground cable – connect to burner frame
6 – Ignition cable connector
7 – Main power switch with integral thermal breaker
8 – Selector switch (Auto/Reset/On)
9 – Temperature controller
10 – Process label (both MASH and HLT are included)
Caution:Connecting a solenoid valve other than the Blichmann Engineering supplied valve can be done, but
DO NOT exceed 2A (inrush). Power out is 120V. Exceeding this power will cause permanent damage to the
ignition system and is not covered under warranty! Never exceed 30 PSI on the solenoid valve!
Warning: The ignition system uses high voltage to create a spark! Do not power up the controller and leave
the selector switch in Reset mode until connections of the ground and ignition wires are made or shock could
occur! ALWAYS place the black vinyl cover over the end of the ignition wire when not in use (Fig 28).
Caution: Use common sense when routing wires so that they are away from heat sources which may lead to
burned, melted, or shorted wires. Properly secure them during use with the included twist ties (search
McMaster for “reusable cable ties” for additional ties and options).
Solenoid Power Out
Ignition wire
Com port
Sensor
Cable storage
Temp Adjust
Selector switch
Ground wire
Fig. 28
Fig. 29a Fig. 29b
Power/breaker

16
If You Use a TopTiertm Brewing Stand:
Blichmann Engineeringtm offers a utility shelf (10” X 10”) that readily supports two controllers. We also offer a
TopTiertm installation kit for installing your Tower permanently to the stand. See fig 14 on page 9.
Controller Operation
The TOWER of POWERtm controller uses a digital PID temperature controller to maintain the set temperature
of the liquid returning to the TOP of your mash. Again, it is VITAL that you do NOT put the sensor directly
into the mash. For your HLT it is recommended to install it directly into your tank.
When heat is needed, the controller simultaneously activates an ignition sequence (sparking on the electrode),
turns on the gas flow by opening the gas solenoid valve, and activates an alarm horn letting you know the
burner is about to ignite.
When a flame is established, the ignition system detects a change in resistance in the lead wire and turns off
the sparking, but leaves the gas valve open. If the flame is lost (eg, a gust of wind) it will automatically
reactivate the spark to reignite the flame. If at any time a flame cannot be established within 10 sec it will
stop the ignition trial and will sound an alarm horn.
Warning! Always make sure that your pot is filled with sufficient liquid before turning on your controller.
Adding heat to an empty pot will cause permanent damage!
Warning! If you are unable to ignite after 10 sec turn the selector switch to RESET immediately. This will
deactivate the gas valve and ignition sequence. Check fuel tank level, and that all gas valves and regulators
are on. Check that the solenoid valve is installed in the correct direction, and that the ignition and ground
wires are properly installed. At this time you can return the selector switch back to AUTO mode.
Note: you need to have the selector switch in RESET mode for at least 3 sec to reset the ignition controller.
Changing Temperature Setting: Refer to Fig 30. ACT
will display the sensor temperature. SET will display
your desired temperature. Press the up and down arrows
to increase or decrease the temperature. Leaving the
button depressed will increase/decrease the temperature
rapidly. While changing the SET temperature, the SET
temp display will flash. When you have reached your
desired temperature depress the enter button to accept
the value and the SET value will stop flashing.
Important: if the SET value is flashing it is NOT
activated. Always press the enter button after changing
the SET point.
Changing Units F/C – see appendix at the end of this manual
Selector Switch Modes (ref fig 30)
AUTO – Use this position to let the PID controller automatically turn your burner on/off
RESET – Use to reset the ignition system if you are unable to generate a flame within10 sec. (3 sec
reset) This mode can also be used to disable the flame/ignitor if desired.
MANUAL – Use this mode to override the PID controller and turn on the flame to add heat.
Fig. 30

17
How The Controller Functions As You Ramp:
Review graph on page 4 for a visual representation. As you ramp toward the set point the burner will remain
on until you approach the set point. Within a degree of the set point, the controller will go into a 30 sec “cycle
mode”. In this temperature band, the burner will remain on only for only a portion of the 30 sec cycle. You
will notice some overshoot of the return wort, but the actual mash does not overshoot significantly. Shortly,
the temperature will settle out and the burner will ignite for shorter durations and the controller ACT temp
will be very close to the SET point. It is normal for the ACT temp to drift above/below the SET point during a
rest period, but the actual mash temp will remain quite stable and within the +/- 0.5 F tolerance band.
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. The temperature in your mash bed is what
drives the wort character. We have tuned this system to offer the best match of ramp speed and stability.
Tower Operation
Flow Meter/Stuck Sparge/Low Flow Alarm: The Blichmann Engineeringtm Tower is
equipped with a very high quality flow meter to allow you to accurately and repeatably
set your recirculation rate to avoid a stuck mash, to ensure you have adequate flow to
maintain a stable system, and for batch-to-batch repeatability. Simply read the flow
rate at the top of the red float as shown in Fig 31.
Low flow switch: the flow meter is equipped with a low-flow switch and alarm horn
that will notify you in advance that your flow is dropping and your mash is beginning to
stick. Simply slide the switch assembly up or down to the desired low flow setting.
Important: It is possible for bits of grain to become lodged in the valve or in the flow
meter. This may give a false indication that the mash is sticking. Simply open the
throttling valve quickly to dislodge the particles and then return to the original flow.
Re-evaluate if the problem has been resolved. Once your mash bed has been set this is
generally not a problem. If this is a chronic problem, you may need to install a pre-filter
after the mash tun, or improve the sealing of your false bottom or manifold assembly to reduce grain passage.
The pump selector switch is mounted on the RH side of the Tower. It has a
SILENCE position to silence the alarm if desired (Fig 32). In “Silence” mode the
alarm will be disabled, but the pump will continue to run. In “Off” mode, both
the pump and the alarm will be disabled. Since the lauter rate is generally
much lower than the recirculation rate this is a convenient feature.
Valve Operation for the Tower is quite intuitive. The 3 way valve will begin to
flow to the right when the handle is moved to the right, (similarly to the left),
and will be blocked from flowing left or right when facing you.
Depending on the orientation of your brew system, you will connect one outlet
of the valve to the mash tun, and the other outlet to your brew pot. When you
are ready to sparge, simply divert the flow to the brew pot.
Note: The three way valve is also used to throttle the flow which can be measured at the flow meter.
Flow
Switch
Fig. 31
Fig. 32
Align at bottom

18
Brew Day Process
It is recommended that you use plain water initially to test your system and become familiar with the
response and operation of your new system. Expect to do a couple actual brew sessions to dial in and master
your new system and process.
(1) Calculate your desired strike temperature using any of the available calculators or brewing software.
(2) Fill your mash tun and hot liquor tank with the appropriate volume of water.
(3) Open all valves on your mash system. Open the sample port to purge air and fill your lines with water.
TIP: make sure the hose running into your mash tun is empty and the AutoSparge (if used) is open to
avoid an airlock.
(4) Turn on your pump and adjust the flow to your desired setting using the handle on the 3-way valve (or
your flow control valve) to throttle it back if needed. NEVER throttle the flow to the INLET of the pump.
ALWAYS on the OUTLET of the pump!
(5) Place all controller mode selector switches to RESET.
(6) Turn on the controllers and enter the desired strike water and HLT temperature into the controller.
(7) Place both controllers in AUTO mode. The burners will ignite and control your tanks to the desired
temperature.
(8) DO NOT ADD GRAINS AT THIS TIME!
(9) When your mash water has reached the desired temp, turn the Mash controller to RESET, turn the
pump off and close all the valves.
(10) Add your grains at this time stirring gently
Flow Off
Full flow
Flow
Throttled
Connect to mash
tun outlet
Turn to
sample
w
ort
Connect to
mash tun inlet
(or vise versa)
Connect to
Brew pot
(or vise versa)
Fig. 37Fig. 36
Fig. 35Fig. 34
Fig. 33

19
Important! During dough-in always turn the pump OFF or you will airlock your pump and stick your mash.
It is important for the water to absorb and the air to purge from the grains. 10 min is usually adequate.
(11) After dough-in, turn the valves back on, turn on the pump, and place the controller back to
AUTO and the burner will ignite as needed.
(12) To ramp to another temperature simple use the up arrow and press enter to accept. The burner
will ignite accordingly.
Tip! Wort samples to monitor starch conversion and specific gravity are easy – just open the sample port valve
and draw off a sample!
(13) When your mash is done (usually at 168F (75.5 C)) you may begin the sparge process.
Caution! During sparging ALWAYS put BOTH controllers into RESET and turn the gas off! Failure to do so
could result in a warped/damaged HLT or mash tun!
(14) If you are using the Blichmann Engineeringtm Tower with an AutoSpargetm, simply rotate the 3-
way valve toward your boil kettle hose and then open your HLT valve. You may use the 3-way valve to
throttle your lauter rate which can be read on the flow meter. The AutoSparge will automatically
adjust to the lauter rate into your boil kettle if you are using this option. Again, putting the pump
selector switch in the “Silence” position will turn off the alarm horn but leave the pump running.
Cleaning
Always clean your system immediately after use to flush wort out of the hoses, pump and other cavities.
While wort making equipment does not need to be sanitized, it DOES need to be clean. We recommend
recirculating PBW (Powdered Brewery Wash) and then StarSan through your system immediately after each
use.
Simply use a bottling bucket filled with PBW, elevate it above your pump, and connect with a hose to the inlet
of the pump. Place the outlet hose (return hose to your mash tun) in the top of the bucket. Open the valves
and start the pump. If using the Tower, opening the sample port will vent air out of your pump. Run for
about 15 min, drain, and then repeat with StarSan, then drain and allow to dry.Periodically, you may wish
to remove the pump head and disassemble for cleaning. Refer to the March manual for instructions.
Advanced Operation Mode (auto ramp/soak/monitoring)
This mode of operation requires the purchase of an optional RS485->USB communication cable (purchase
through your retailer) and downloading the free Blichmann Engineering TOP-Link interface software from our
web page. Please note that a plain USB cable will not work and may damage the controller.
www.blichmannengineering.com/TOWER_of_POWER/TOWER_of_POWER.html
If you are not comfortable with using computers and/or do not like experimenting or tinkering with your
system this is probably not a feature you should explore. In any case, we highly recommend that you master
operating the product in manual mode first before attempting to operate in auto ramp/soak mode.
Important: This is an advanced feature and phone/tech support is not provided through Blichmann
Engineeringtm. If you do have questions or trouble please contact your retailer for assistance. We highly
recommend that you review the online video PRIOR to purchasing the cable.

20
Important: this software is only available for Windows platform. It is not available for Mac or portable
devices.
Features: The auto ramp/soak feature will allow you to automatically follow a user-programmed mash
profile. Up to 8 individual mash profiles can be stored in the controller (up to 4 rests each) and they can also
be linked together for very complex mash profiles. In addition, the user can save an unlimited number of
mash profile files on your computer and recall those as needed. System parameters, such as units, calibration
offset, resetting to factory defaults etc. can easily be made through the software. Lastly, the user can graph
the controller output and export to a CSV file for documenting the brew day.
For a preview of the software, and for instructions on operation, view our online tutorial video at the page
listed below. A written manual is not available for advanced operation mode.
www.blichmannengineering.com/TOWER_of_POWER/TOWER_of_POWER.html
Trouble-shooting
This section provides suggestions for trouble-shooting problems that may arise with the equipment. Please
see our FAQ tab on the TOWER of POWER page for additional updated suggestions.
IMPORTANT: Please use this guide for the fastest resolution of your problem. Your retailer is your point of
contact for product questions, and your fastest way to resolve your issues if the chart below does not resolve
your problem. Your retailer will contact Blichmann Engineering if they are unable to resolve your issues.
Display flashing Press enter key to accept temperature setting. If flashing does not stop cycle power
on front of controller. If this recurs, contact your retailer.
Overshoot Increase flow and/or decrease heat input (reduce flame).
Check that mash is not sticking and flow is adequate
Undershoot Increase heat input, always flow as fast as possible without sticking mash
No spark Ensure that spark wire is connected to electrode and controller
Check that ground wire is connected to electrically conductive portion of burner and
to controller.
Ensure that controller selector switch is in On or Auto mode. Spark is disables in
Reset mode
Check that SET point is higher than ACT temperature.
If this does not resolve issue contact your retailer.
Sparks but no flame
Check valve on gas supply to make sure it is on and will flow gas. Bypass solenoid
valve to check for free gas flow.
Ensure gas solenoid valve is oriented correctly. Reorient if needed.
Feel electrical coil and determine if it is clicking when “heat” light activates on face
of controller. If it doesn’t, check for power on electrical plug on back of controller
using a volt meter. If no power when HEAT light is on, contact your retailer.
If power present, replace solenoid valve.
Low flow Open pump throttling valve quickly to dislodge any grain particles. Return to