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Table Of Contents

ET 134 Line Voltage Room Thermostats
- Product Number Specifications
- Dimensions

Technical Instructions

Powers

Controls

ET 134 Line Voltage Room

Thermostats

Document No. 155-017P25

ET 134-55

August 27, 2021

134-1083

134-1084 &134-1085

Exposed Knobs

134-1084 & 134-1085

Concealed Adjustment

134-1086

Description

The ET 134 series are line voltage, wall mounted thermostats that are available with

exposed or concealed set point adjustment. Models are available with Single-Pole,

Single-Throw (SPST) or Single-Pole, Double-Throw (SPDT) contact action and for

standard-duty (nominal 1/4 hp; 10 amps, non-inductive) or heavy-duty (nominal 1 hp;

22 amps, non-inductive) applications.

Features

134-1083

• Locking cover with Allen screws.

• Concealed auto-off-fan selector switch.

• Adjustable high range stop.

134-1084, 134-1085,

134-1086

• Dual Fahrenheit and Celsius scale thermometers.

• Separable mounting plate for mounting and wiring without removing cover.

• Locking cover with Allen screws.

• Concealed, adjustable low and high range stops.

• Large, exposed set point knob (134-1084 and 134-1085)

• Internal, dual Celsius and Fahrenheit scale.

• Optional blank faceplate included (134-1084 and 134-1085).

Warning/Caution Notations

Siemens Industry, Inc.

Part No. 996-286 Rev. E

WARNING Personal injury/loss of life may occur if a procedure

is not performed as specified.

CAUTION Equipment damage may occur if the user does not

follow a procedure as specified.

Summary of content (8 pages)

PAGE 1
Technical Instructions Document No. 155-017P25 ET 134-55 August 27, 2021 PowersTM Controls ET 134 Line Voltage Room Thermostats 134-1084 &134-1085 Exposed Knobs 134-1083 134-1086 134-1084 & 134-1085 Concealed Adjustment Description The ET 134 series are line voltage, wall mounted thermostats that are available with exposed or concealed set point adjustment.
PAGE 2
ET 134 Line Voltage Room Thermostats Technical Instructions Document Number 155-017P25 August 27, 2021 Application These line voltage thermostats control heating, cooling or year-round air conditioning units in commercial, industrial or residential installations. Typical uses are for unit heaters, fan coils, blast coils, refrigerated storage rooms, electric heat, duct furnaces, greenhouses, etc. WARNING: These thermostats are designed for use only as an operating control.
PAGE 3
ET 134 Line Voltage Room Thermostats Technical Instructions Document Number 155-017P25 August 27, 2021 Table 4. Product Numbers and Specifications. Product Number Set Point Adjustment 134-1083 Dual Set Point Range °F (°C) Differential °F(°C) Switch Action Weight Ibs. (kg) 1.8 (1) SPST with "AUTO-OFF FAN" Switch 1.3 (0.6) Concealed 134-1084 134-1085 *Exposed Knob, or Concealed 134-1086 Concealed 40 to 90 (5 to 32) 1.8 (1) Htg. 2.3 (1.3) Clg. 3 (1.7) Htg. 3.5 (2) Clg. 1.
PAGE 4
ET 134 Line Voltage Room Thermostats Technical Instructions Document Number 155-017P25 August 27, 2021 Mounting The proper location of a heavy-duty room thermostat is very important to ensure good performance. • Make sure the thermostat is in a place where air circulates around it freely. • Never install the thermostat on or near an outside wall. • Keep the thermostat away from windows and doors.
PAGE 5
ET 134 Line Voltage Room Thermostats Installation of 134-1083 Technical Instructions Document Number 155-017P25 August 27, 2021 Read the Mounting and Wiring sections. 1. Make the wiring connections to the numbered terminals on the back of the thermostat. Figure 1 shows typical wiring diagrams. Typical Auto-Off-Fan application for 134-1083 thermostat. Typical heating application for 134-1084, 134-1085, 134-1086 thermostats. Typical cooling application for 134-1084, and 134–1085 thermostats. Figure 1.
PAGE 6
ET 134 Line Voltage Room Thermostats Technical Instructions Document Number 155-017P25 August 27, 2021 Figure 2. Interior View of the 134-1083. Figure 3. Mounting a 134-1084, 134-1085 or 134-1086 Thermostat to a Conduit Box. Page 6 Siemens Industry, Inc.
PAGE 7
ET 134 Line Voltage Room Thermostats Technical Instructions Document Number 155-017P25 August 27, 2021 Installation of Read the Mounting and Wiring sections. 134-1084, 134-1085, 1. Do not remove the thermostat cover to install. 134-1086 2. Remove the mounting plate from the back of the thermostat by unscrewing the mounting plate locking screw (see Figure 3) with the Allen wrench provided. 3. Fasten the plate to the conduit box with the screws provided on the mounting plate. 4.
PAGE 8
ET 134 Line Voltage Room Thermostats Technical Instructions Document Number 155-017P25 August 27, 2021 Dimensions Dimensions in Inches (Millimeters) Figure 6. Dimensions of the 134-117 Thermostat Guard. Figure 5. Dimensions of the 134-1083 Thermostat. Figure 7. Dimensions of 134-1084, 134-1085 and 134-1086 Thermostats. Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced.