BD Module selection

Danfoss offers a series of special electronic modules for their 12 volt
BD35 BD50 compressor to address differant installation and operating
problems. There are two different modules to hopefully address the
radio noise problem, A soft start module for the BD50, An AC/DC model
to eliminate the battery charger when connected to shore power and
Danfoss's automatic speed control model. Unfortunately they don't
sell one model that has all of these functions. For more information on
this see the current post on my forum at http://www.kollmann-marine.com

Glenn, I would recommend the automatic speed control module described
by Danfoss as Adaptive Energy Optimization module (AEO). Here are
some additional recommendations:
· These units are so quite I would add a green 12 volt LED to the
module's unused fan terminals small + and F.
· All these modules have a chip inside for troubleshooting if a 12
volt low amp LED is connected to module terminals small + and D. A red
LED is recommended here as the only time it will be on is when there is
a problem.
· If you need to add a supplemental cooling fan I would control it
with a inexpensive temperature Snap Disc Control switch available from
WW Granger. I have used there model 2E246, fan turns on at 120 degrees
and off at 110 degrees the objective is to keep the compressors below
130 degrees F if possable, cost $7.