Honeywell L7224 manual

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The rules should oblige the seller to give the purchaser an operating instrucion of Honeywell L7224, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

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- informations concerning technical data of Honeywell L7224
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- safety signs and mark certificates which confirm compatibility with appropriate standards

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Table of contents for the manual

  • Page 1

    T ECHNICIAN’ S QUICK REFERENCE GUIDE 69-1957—1 L7224 Series Oil Electronic Aquastat® Controller The following service procedure pr ovides a quick overview for L7224 Series Controllers. For more in formation, refer to form 69-1384. On the L7224U the High Limit, High Limit Differential, Low Limit, and Low Limit Differential can be adjusted to th[...]

  • Page 2

    69-1957—1 2 L7224 SERIES Pressing the I button again will display the LL (Low Limit) followed by a three-digit number and the corresponding degree designator . See the table below for an explanation of display readout. After approximately 60 seconds without any key presses, the display will enter a dim display mode. T o return to the bright displ[...]

  • Page 3

    3 69-1957—1 L7224 SERIES T able 2. L7224 Controller Operating Seq uence T roubleshooting When attempting to diagnose system performance, reference the LED display to help identify specific areas not working properly . The LED display will scroll “err”, follo wed by a digit (1-8). See T able 1 for a description of the error a nd suggested acti[...]

  • Page 4

    Automation and Control Solutio ns Honeywell Internatio nal Inc. Honeywell Limited-Hon eywell Limitée 1985 Douglas D rive North 35 Dynamic Drive Golden Valley, MN 55422 Toronto, Ontari o M1V 4Z9 customer.hon eywell.com ® U.S. Registered T rademark © 2006 Honeywell International Inc. 69-1957—1 Re v . 06-06 Boiler is cold, house is cold Display i[...]