BREWHA Equipment Co Ltd. BIAC, User Manual

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power output knob on the Tabletop Controller. If using a
120V element, plug it directly into a wall socket (not the
ETC during boil). Emptying your jacket before boiling—
especially with the 120V system—is recommended to
reduce heat loss to the air.
5. Boiling: 60–90 minutes
Once a rolling boil is achieved, the element power output
can be adjusted to influence the rate of evaporation and
control the final volume for fermentation. Ensure vapor
can escape, as the steam carries away some compounds
that would otherwise produce off-flavors in the beer. It
is a good idea to monitor the boil and turn the power
down/off if necessary to prevent a boil over (especially
important in the first few minutes of the boil until the foam or ‘hot break’ subsides). Boiling
improves the flavor and kills microbes. Hops can be introduced after hot break using the Hop
Basket or Spider. Early addition or ‘boil’ hops provide bitterness to balance beer sweetness,
and late addition or ‘aroma’ hops provide flavor/aroma. An additive such as Irish Moss
(carrageenan) or a commercial flocculant such as Whirlfloc (added for the last 5–10 minutes of
the boil) can help remove proteins and yield clearer beer. While it is optional, using it alongside
proper mashing technique, a highly ‘flocculant’ yeast (one that easily clumps and settles to
bottom of the fermenter where it can be removed) and healthy fermentation will result in
clearer beer.
BIAC User Manual Brewing
Warning: Do not put a closure on ANY fermenter lid or jacket port
while boiling, chilling, or fermentating, as a vacuum or pressure build
up may occur and deform the vessel; pressure needs to equalize.
Warning: If using a glycol system, pressure control before AND
pressure relief AFTER the jacket must be installed to ensure pressure
doesn’t rise above 7psi. Due to most glycol systems being sealed,
thermal expansion in the jacket and pipes can cause significant
pressure increase, damaging the vessel.
Tip: Since cold wort might be trapped at the extremity
of the racking and dump ports, to ensure proper
sanitation, flush some boiling wort through the
valves during the boil. (The wort can be collected and
returned to the boil at the top of the fermenter.)
Figure 58