Field-controls High Temperature Vent Limit LS-140A User Manual download pdf

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 junction 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 high temperature sealant 2) Wire hold down clips (LS-550A)

4) Wiring quick connect terminals (LS-140A) 1) ROMEX connector

Installation of a High temperature vent limit switch is recommended for LP and Natural gas fired power

vented and natural draft water heaters. This device is installed to limit the vent temperature in either

plastic pipe (140

F temperature limit) or B vent installations (550

F temperature limit) caused by scaled

up tanks and/or inadequate venting. Wiring MUST be in accordance with the National Electrical Code and

applicable local codes.

The Field Controls High temperature vent limit switch MUST be installed by a qualified agency in

accordance with the manufacturer’s installation instructions.

The definition of a qualified agency is: any individual, firm, corporation or company which either in person

or through a representative is engaged in, and is responsible for, the installation and operation of gas

appliances, who is experienced in such work, familiar with all the precautions required, and has complied

with the requirements of the authority having jurisdiction.

Before and after adding this safety control on existing appliances, an installation inspection in accordance

with the National Fuel Gas Code 54, Z223.1 Appendix H should be performed and a combustion analysis

is recommended to determine the operating condition of the appliance.

CAUTION: Disconnect Electrical Power When Wiring High temperature vent limit switch

MODEL P/N

CONTACT

MATERIAL

LOAD RATING

LIMIT

SETPOINT °F

RESET

SWITCH

TYPE

APPLICATION

AMPS VOLTS

LS-140A 46564100 SILVER 15 A 120 AC 140 AUTOMATIC SPDT PLASTIC VENT APPLICATIONS

LS-550A 46564200 SILVER 15 A 120 AC 550 AUTOMATIC SPDT B-VENT APPLICATIONS

1 2 3 4

Summary of Contents

Page 1 - Models: LS-140A, LS-550A

2630 Airport Road · Kinston, NC 28504 Phone: 252-522-3031· Fax: 252-522-0214 www.fieldcontrols.comHIGH TEMPERATURE VENT LIMIT SWITCH Models: LS-140A,

Page 2 - CIRCUIT BREAKER!!

Page 2INSTALLATION OF LS-140A SWITCH ON A POWER VENTED WATER HEATERS WITH PLASTIC PIPE 1. Disconnect Electrical Power to the water heater and shut

Page 3

Page 3connectors on the solenoid valve and route the wires from the solenoid valve connections to the common terminal and the normally close (NC) ter

Page 4 - MILLIVOLT WATER HEATER:

Page 4 Wiring the LS-550A Limit switch Wire the High temperature vent limit switch in accordance with the National Electrical Code, manufacturer&apos

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Field-controls High Temperature Vent Limit LS-140A User Manual

Browse online or download User Manual for Computer Accessories Field-controls High Temperature Vent Limit LS-140A. Field Controls High Temperature Vent Limit LS-140A User Manual

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