As the industry evolved, several changes occurred. The HR-6 initiative passed and
all glass door OEMs scampered to find cost effective alternatives, beer caves
became more prevalent and the need for a simpler low amp anti-sweat controller
emerged, and finally new more forceful directives were enacted to make the HR-6
initiative more measurable. With the 2012 changes, all OEMs were forced to
measurably control heat once the humidity reached 55%. In response, we expanded the
line to include a dozen Glass Sentry derivatives. The Glass Sentry Walk-in Series
comprises 4 anti-sweat controllers in a smaller shell that will
handle loads up to 10A. Now OEMs can match the controller to operate according to
specific product line characteristics.

GSW-C
Another round of HR-6 initiatives comes into
effect in 2017 with even more stringent requirements. Engineers
are being forced to use all their resources to cut energy
consumption wherever they can. Anti-sweat controls can make a
big difference and the GSW-C can help with the new
requirements. This is a closed loop unit making it the ultimate
in maximum energy savings. It keeps condensation off the doors
and frames when it needs to and it saves money when it’s
impossible for fog to form. The unit’s rated to 10A giving it
the needed flexibility to be used in supermarket, C-store, or
drug store applications.
Download Spec Sheet
Download Installation Instructions

GSW-O
The GSW-O is an open loop unit with a generic algorithm
designed for reach-in or walk-in applications. Based on
humidity, it can be programmed generically from the factory or
specifically to match the characteristics of the OEM product
line. This 10A unit is a versatile and economical solution for
engineers who have instituted other changes but still need
additional savings to meet the new requirements.
Download Spec Sheet
Download Installation Instructions

GSW-OC (1 OPEN/1 CLOSED)
The GSW-OC is a 2 output unit controlling
both the glass door heaters as well as frame heaters with 1
closed loop humidity/frame sensor combination in addition to a
second open loop algorithm. This gives engineers the option of
controlling one heater circuit with the ultimate maximum
savings and then using an open loop algorithm for a second less
critical circuit.
Download Spec Sheet

GSW-OO (2 OPEN LOOP)
The GSW-OO is a 2 output unit using 2
algorithms to control both the glass door heaters and the frame
heaters. This unit allows OEMs to match the two outputs
together. We provide the OEM with a software tool with table
values that can be filled in with duty cycle numbers and %RH.
Hard start times and cycle times can also be modified
accordingly.
Download Spec Sheet