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Digital Thermostat and Optional ECM
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All Glacier Bay systems include Digital Thermostats as standard equipment for maximum reliability and optimum temperature control. These controls are not only attractive and convenient but rugged and practical as well. The precise settings possible with these controls (1/10th of one degree) give the accurate and repeatable control needed to gain maximum energy efficiency from your true eutectic holding plates. Mounting Flexibility Unlike mechanical thermostats, Glacier Bay Digital Thermostats can be placed anywhere on the vessel, near the refrigerated boxes or on the control panel - you choose. Simply extend the sensor wire up to 1,000 feet using common 18 gage electrical wire. Automatic Operation With Glacier Bay refrigeration there is no need to set timers or otherwise manually control the system. Once set, the Digital Thermostats will control your system far more accurately than is possible with manual operation. This accuracy translates into maximum energy efficiency, superior holdover, ultra-stable box temperatures and long food life. Separate Refrigerator and Freezer Control For the vast majority of cruisers we prefer to use separately controlled holding plates in the refrigerator and freezer rather than the "spill-over" configurations frequently recommended by our competitors. With the Glacier Bay system your refrigerator and freezer are individually controlled by two separate thermostats. In addition to improving energy efficiency and temperature control, this approach permits either box to be "shut down" while the other continues to operate normally. Optional Box Temperature Probe Each Digital Thermostat comes with one temperature probe with is used to monitor the temperature of the holding plate and cycle the system as required. Since it is the temperature of the holding plate which is being monitored, the standard control normally displays the holding plate temperature rather than the temperature of the box itself. However, an optional Box Temperature Probe can be added to any thermostat (including the ECM Controls described below) which makes it normally display the box temperature. The holding plate temperature can still be read, when desired, by depressing one of the control buttons.
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| ECM CONTROL OPTION The ECM Control Option replaces the standard digital thermostat described above. While still retaining all the features of the standard Thermostat, the ECM adds much more. Through the use of an exclusive "ENGINE DRIVE" operational mode these microprocessor based controls will -
WHAT IS "ENGINE DRIVE" OPERATIONAL MODE? Under normal operating conditions (i.e. battery or shore-power) the compressor of your Glacier Bay refrigeration system is automatically activated only when the holding plate eutectic solution is fully thawed. Once activated, the compressor will continue to run until the plate is solidly frozen before turning off. Depending on the total system configuration (plate size, box insulation, ambient temperature, etc.) the time between these compressor cycles may be 8 - 24 hours or more. Under most conditions, this full cycling of the holding plate is the best way to control the system since it provides maximum energy efficiency and minimum compressor run time. However, on those occasions when an excess of power is available (such as when the engine or generator is started) it is desirable to "short-cycle" the system by running it more frequently for much shorter periods of time. The ability to sense this available power (i.e. an engine running) and change operational modes is an exclusive feature of Glacier Bay's ECM Digital Control System. HOW DOES THE ECM CONTROL SYSTEM REDUCE BATTERY DRAIN? By "short-cycling" the refrigeration compressor whenever the engine (or generator) is running, the Digital Control System automatically tops-off the holding plate(s) and maintains it in a fully-charged condition until the engine is shut off. Once the engine shuts off, the system switches back into it's standard, fully-cycle mode with a completely frozen holding plate. Battery drain is reduced and overall system efficiency is increased since the excess power output from the alternator into the completely and effectively re-directed into the refrigeration system. Without the "Engine Drive" feature this power would normally go to waste. ADDITIONAL ECM DIGITAL CONTROL FEATURES INCLUDE:
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