Heatcraft Refrigeration Products 25001501 - Manual (Page 6)

BEACON CONTROLLER
6
ROOM TEMPERATURE CONTROL (Cont’d.)
• Another method of setting the room set-point is to use the Beacon board thermostat pot. If a value other
than that available by using a fixed resistor is required, the pot on the Beacon board can be used. First,
you must discard the fixed resistor. Then, using a digital ohmmeter, measure the resistance between the
“X” and “200K” as indicated in the illustration below. Use a screwdriver to turn the thermostat pot until the
resistance value is obtained for the desired room temperature (according to Table 1). Install the jumper
(supplied in the bag) across the terminal marked “X” when finished.
TABLE 1
Carbon Film Fixed Resistor selections that will control the room temperature at the approximate temperatures
shown. These values are also to be used for setting the Beacon board thermostat.
• The Beacon Smart Controller. See Beacon Smart Controller Installation & Operating Instructions (Part
#25004101) for more details.
Application Temperature
°
F *Ohms
Low Temperature -25 182K
Electric Defrost -20 150K
-15 120K
-10 100K
-5 85K
0 70K
Medium Temperature 20 30K
Electric Defrost 25 25K
30 20K
Medium Temperature 35 15K
Air Defrost 40 10K
45 8K
50 5K
55 2K
60 0K