Mechanical Thermostats are the most cost-effective way of controlling box temperature. The dedicated Refrigerator and Freezer thermostats require that the sensing tube be attached and in good thermal contact with the aluminum evaporator plate, and that typically limits the choice of location to somewhere on a wall inside the box itself. If the Mechanical Thermostats can be mounted outside of the box, where there is a less humid environment, they will be less likely to corrode and fail. The Wide Range Thermostat senses air temperature and can control the box as either a refrigerator or freezer. Digital Thermostat/Thermometers sense air temperature in the box and display it on a LED panel. Precise desired operating temperatures can be obtained, and there are several other parameters that can be adjusted. A 12v supply is required for Digital Thermostat/Thermometers.
Thermostat Selection Guide
Click to buy Guardian System Controller
Guardian All-in-one refrigeration system controller. Small Panel, approx. 5" x 2". Features Coastal MK II Digital Thermostat/Thermometer plus auto/manual speed selection knob and diagnostic fault LED. When used with the Merlin Smart Speed Controller or AEO module, gives automatic speed control. The Guardian is pre-wired with a 10' harness and slip on connectors to facilitate a quick and easy installation.
Click on photo for full details
Click to buy Coastal MK II 12v Digital Thermostat/Thermometer
Coastal MK II Digital Thermostat/Thermometer
Comprises of remote, panel-mounted digital thermostat with LED display. Pre-wired with fused 10' cable, plus sensor with 10' lead. Sensor senses box temperature, which is shown full time on the display. Can be used for refrigerator, freezer,or spillover. Buttons enable set point to be adjusted and other parameters accessed and changed. Shipped in Fahrenheit but can be set to work in Celsius. 12v standard, 24v on request. Buzzer alarms for high and low temperatures, as set by operator.
Coastal MK II Thermostat with 10' Cable and 10' Sensor. Click photo for details
Click to buy Frigoboat Mechanical Refrigerator Thermostat
Frigoboat Mechanical Refrigerator Thermostat.
For use in refrigerator applications, where the end of the sensing tube is attached to the aluminum evaporator. If using BIN (B) or HORIZONTAL (H) evaporators with internal freezer compartment, refrigerator thermostat must be used.
Click to buy Frigoboat Mechanical Freezer Thermostat
Frigoboat Mechanical Freezer Thermostat.
For use in freezer applications, where the end of the sensing tube is attached to the aluminum evaporator.
Click to buy Frigoboat Wide Range Thermostat
Frigoboat Wide Range Mechanical Thermostat.
Has many uses. Can be used as an air-sensing thermostat to control box at wide range of temperatures. Temperature can be set anywhere from +30C (86F) to -30C (-22F).
Coastal Climate Control, Inc. Annapolis MD USA 301-352-5738