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Posted by John on March 04, 2002 at 21:41:55:
In Reply to: Freezestat posted by jack on March 02, 2002 at 04:49:05:
: How do you test a freeze stat with a 20 foot sensing bulb?
Hello Jack, The freeze stat you refer to may have a long skinny capillary tube with a bulb at the end of it, the bulb could be 2-5 inches long and 1/4-1/2 inch diameter. Place the bulb in a one quart container of icewater, leave it there for 10 minutes, lower the dial setting on the control to find its make/break point, this should be near 32-34 degrees.(a thermometer in the icewater helps) Adjust the dial setpoint a couple of degrees higher than freezing (35 degrees or higher) to protect your equipment. Do not perform this test with equipment running and power to the control, as your system may dump water or shut down on freeze protection.
If you have a freezestat with a 20 ft averaging element and no bulb on the end of it, coil the element into a bucket of icewater. Hope this helps you out.