Schneider Electric TC-2931 Changeover Thermostat Instruction Manual

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TC-2931, TC-2942  

Changeover Thermostats, Strap-On Type,  

Summer/Winter  

General Instructions  

Application  

These thermostats are used primarily on combination  

heating and cooling air conditioning units to sense  

supply media temperature and reverse the control  

action of the room temperature sensing element.  

Units are hermetically sealed. TC-2942 is enclosed  

type and has 1/2” conduit adapter. Fast responding  

bimetal element actuates snap-acting SPDT with silver  

contacts. Units are supplied with three color coded 16  

gauge leads 3 ft. (914 mm) long.  

TC-2942  

Enclosed Type  

TC-2931  

Open Type  

Dimensions: 2 in. (51 mm) diameter x 1-1/2 in. (38  

mm) high.  

Table-1 Model Chart.  

Max.  

Switch Ratings (AC Only)  

Min. Hot  

Chilled  

Water  

Temp.  

°F (°C)  

Part  

Setpoint  

°F (°C)  

Differential  

°F (°C)  

Water  

Temp.  

°F (°C)  

Type  

Number  

Voltage  

(Vac)  

FLA  

LRA  

Pilot Duty  

(VA)  

(Amps)  

(Amps)  

TC-2931  

TC-2942  

Strap-On  

Fixed  

75 (24)  

Approx.  

Fixed 15  

(8)  

Approx.  

120  

240  

5.8  

2.9  

34.8  

17.4  

90 (32)  

60 (16)  

125  

Strap-On  

Enclosed^a  

a. Has 1/2” conduit connector  

Options  

TC-2931-204 with 10 ft. (3 m) cable and plug (which cannot  

be extended) for unit ventilator.  

TC-2931-205 with 3 ft. (914 mm) cable (which cannot be  

extended) for CP-5341.  

Accessories  

None.  

Pre-Installation  

The thermostats are shipped with an attached flange and two  

mounting springs for mounting on tubing or pipe up to 1-1/2”  

(38 mm).  

Before installing the thermostat, inspect the unit for any signs  

of damage.  

Printed in U.S.A. 8-08  

© Copyright 2008 TAC All Rights Reserved.  

F-12720-8  

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General	Details
Name	Schneider Electric TC-2931 Changeover Thermostat Instruction Manual
Make	Schneider Electric
Language	English
Filetype	PDF (Download)
File size	0.07 MB

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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• Schneider Electric

Schneider Electric TC-2931 Changeover Thermostat Instruction Manual Overview

Summary of Contents

• Page 1: Changeover thermostats, strap-on type, are primarily used on combination heating and cooling air conditioning units to sense supply media temperature and reverse the control action of the room temperature sensing element. Units are hermetically sealed. TC-2942 is an enclosed type and has a 1/2” conduit adapter. Fast responding bimetal element actuates snap-acting SPDT with silver contacts. Units are supplied with three color coded 16 gauge leads 3 ft. (914 mm) long. Dimensions are 2 in. (51 mm) diameter x 1-1/2 in. (38 mm) high. The thermostats are shipped with an attached flange and two mounting springs for mounting on tubing or pipe up to 1-1/2” (38 mm). Before installing the thermostat, inspect the unit for any signs of damage. Options include TC-2931-204 with 10 ft. (3 m) cable and plug, and TC-2931-205 with 3 ft. (914 mm) cable. Accessories are not included.
• Page 2: Requirements for thermostat installation include mounting in any position with specific spring configurations for different pipe sizes. The unit must be exposed to temperatures below 62°F (17°C) or above 88°F (31°C) to establish necessary circuits. Caution is advised against disassembling the thermostat due to its hermetically sealed design. Maintenance involves cleaning and applying silicone lubricant if excessive corrosion occurs between sensing elements and the pipe. Installation procedure requires hooking the spring to the flange on a clean section of the pipe and insulating only after installation on insulated pipes. Field repairs on the thermostat are not recommended; replacement is advised if malfunctioning. Electrical connections must comply with job diagrams and national and local electrical codes. Standard units come with color-coded leads for easy connection to other equipment. The document contains copyright information and notes that details are subject to change without notice.