Field Controls LS-140A manual

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Table of contents for the manual

  • Page 1

    2630 Airport Road · Kinston, NC 28504 Phone: 252-522-3031· Fax: 252-522 -0214 www.fieldcontrols.com HIGH TEMPERATURE VENT LIMIT SWITCH Models: LS-140A, LS-550A Items Included: 1) High temperature vent limit switch 1) TCA-1 thermocouple ju n ction block (LS-550A) 2) 2-1/2 to 5-1/2 inch hose clamps 1) 6 foot length of 12/2 wire (LS-550A) 1) Tube of[...]

  • Page 2

    Page 2 INSTALLATION OF LS-140A SWITCH ON A POWE R VENTED WATER HE ATERS WITH PLASTIC PIPE 1. Disconnect Electrical Power to the water heater a nd shut off the gas supply to the water heater. 2. Drill a 5/16” diameter hole through the side of the plastic vent pipe at least 2-inches above th e outlet conn ection on the powe r venter on the water he[...]

  • Page 3

    Page 3 connectors on the sole noid valve and route the wire s from the sol enoid valve connections to the common terminal and the normally close (NC) terminal on the LS-14 0A limit switch (See Figu re 8). Also route installers supplied green grounding wi re from the LS-140A limit swit ch a nd connect to any co nvenient grounding surfa ce at the gas[...]

  • Page 4

    Page 4 Wiring the LS-550A Limit switch Wire the High temperat ure vent limit swit ch in accordance with the National Electrical Code, manufa cturer's recommendations and/or applicable local codes. THE UNIT MUST BE GROUNDED WHEN WIRED TO ANY 120 VOLT CONTROLS . Che ck ground circuit to make certain that the unit has been properly grounded. Th e[...]