COLUMBUS ELECTRIC ET9 SERIES Installation Instructions

COLUMBUS ELECTRIC ET9 SERIES Installation Instructions

Line voltage thermostat

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LINE VOLTAGE THERMOSTAT – ET9 SERIES

DESCRIPTION

The Columbus Electric wall mounted line voltage thermostat is
suitable for direct connection with any resistance heating ele-
ments and unit heaters. This thermostat has a snap action switch
operated by a bimetal actuator and is available in single pole,
double pole with positive off, two stage heat. Cooling only and
heat or cool models. Other options include a built in thermome-
ter and/or 6 inch wire leads.
INSTALLATION INSTRUCTIONS
Application: A vertical wall box is used for mounting thermostat
4 to 5 feet above the floor on an inside wall where the thermostat
will be subject to average room temperature. It should be away
from concealed warm or cold water pipes, warm or cold air
ducts, drafts from hallways or stairways.

WARNING

1.
Disconnect power from source.
2. Remove cover from old thermostat.
3. Remove old thermostat by removing two screws.
4. Disconnect supply wires from old thermostat.
5. New installation: remove cover by gently pulling away from
thermostat.
6. Make connection of supply lead(s) (red) and load lead(s)
(black) using an approved connector (wire nut, crimp cap, or
etc.).
7. Connect the ground wire to the terminal marked "GRD" or
8. All wiring must conform to application code, ordinanances
and regulations in such matters as wire size, type of insulation
and enclosure.
9. Dress wires into wall box and secure your new thermostat to
the wall box with the screws provided.
10. Reinstall cover, select desired temperature and restore power.
LINE
LOAD
SPST
HEATING OR COOLING
LINE
NO INTERNAL
CONNECTION
IN SWITCH
LOAD
YELLOW
SPST WITH ANTICIPATION
HEATING
P/N: 8426
COLUMBUS ELECTRIC
a division of TPI Corporation

WIRING DIAGRAMS

LINE
HEATING OR COOLING
LINE
TWO STAGE
HEATING AND COOLING

SPECIFICATIONS

ELECTRICAL RATING

22 A Resistive @ 125/250/277 Vac.
3/4 HP @ 125 Vac.
1-1/2 HP @ 250/277 Vac.

TEMPERATURE RANGE

SETTING RANGE......50°F TO 90°F
HEATING OR COOLING. 50°F TO 90°F
ATTIC FAN CONTROL.. 90°F TO 135°F
If this product is used to replace a device containing mercury,
the purchaser or consumer must ensure that the mercury is
properly managed to comply with state or federal regulations.
The mercury must not become part of solid waste or waste
water. Additional guidance may be obtained from the manufac-
turer of the product being removed, or by calling
Columbus Electric Manufacturing Company Materials Manager.
COOL LOAD
COOL LOAD
HEAT LOAD
HEAT LOAD
SPDT
LOAD 1
LOAD 2

DIFFERENTIAL

HEAT APPROXIMATELY:............. 2°F
COOLING APPROXIMATELY:..... 4°F
HEAT ANTICIPATOR MODELS:.1/2°F

DIMENSIONS

4-3/4" ....... HEIGHT
2-7/8" ....... WIDE
2-7/8" ....... DEPTH
WARNING
LINE
LOAD
DPST
HEATING
LINE
LOAD
DPST WITH ANTICIPATION
HEATING
ECO# 1-7135
REV. -

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Questions and answers

Steven Bowry
February 25, 2025

How do I configure the wiring if I have a 240 V line my original thermostat had two lines and two loads this only has one. It is very vague on how to wire it for a double pole single throw.

1 comments:
Mr. Anderson
February 25, 2025

To wire the COLUMBUS ELECTRIC ET9 SERIES thermostat for a 240 V line with a double pole single throw (DPST) configuration, follow these steps:

1. Turn off power supply to avoid electrical shock.
2. Remove the thermostat cover by gently pulling it away.
3. Connect the supply leads (line wires) to the thermostat terminals marked "LINE."
4. Connect the load leads (heater wires) to the terminals marked "LOAD."
5. Connect the ground wire to the terminal marked “GRD” if available.
6. Ensure all wiring conforms to local codes and regulations.
7. Dress the wires into the wall box neatly and secure the thermostat with the provided screws.
8. Reinstall the cover, set the desired temperature, and restore power.

Always follow proper safety precautions and consult an electrician if unsure.

This answer is automatically generated

Summary of Contents for COLUMBUS ELECTRIC ET9 SERIES

  • Page 1: Wiring Diagrams

    TPI Corporation LINE VOLTAGE THERMOSTAT – ET9 SERIES DESCRIPTION The Columbus Electric wall mounted line voltage thermostat is suitable for direct connection with any resistance heating ele- ments and unit heaters. This thermostat has a snap action switch operated by a bimetal actuator and is available in single pole, double pole with positive off, two stage heat.
  • Page 2 COLUMBUS ELECTRIC a division of TPI Corporation TERMOSTATO DE VOLTAJE DE LÍNEA – ET9 SERIES DESCRIPCIÓN Le thermostat de tension de la ligne fixée au mur Columbus Électrique est adapté pour une connexion directe avec des élé- ments de chauffage à résistance et aérothermes. Ce thermostat possède un interrupyeur à...

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