Data Sheet for Product

ManualsBrandsSiemens ManualsElectronic ThermostatsET 141 Line Voltage Remote Bulb Thermostat w/ 6 ft. Capillary, SPDT, (100°F to 240°F)

Technical Instructions

Document No. 155-019P25

ET 141-2

November 1, 2007

ET 141 Line Voltage Remote Bulb

Thermostats

Siemens Industry, Inc.

Description

The ET141 remote bulb thermostat incorporates a temperature-sensitive liquid-filled

sensing element that actuates precision snap-acting switches through a diaphragm and

linkage mechanism. The switches are Single-Pole, Double-Throw (SPDT) snap-acting

type, totally enclosed, and are suitable for low or line voltage power switching.

Application

These remote bulb thermostats are commonly used for the control of temperature in

heating and/or cooling installations. They are used to directly operate two-position

damper motor actuators, motor actuated valves, relays, and other similar equipment.

Applications include their use as high or low temperature control functions, summer-

winter changeover, and the direct control of liquid or air temperatures where two-position

(on-off) control is acceptable.

Product Number

Table 1.

Product Number

Description

141-0520 Remote Bulb Thermostat

Range 30°F to 110°F (-1°C to 43°C)

141-0521 Remote Bulb Thermostat

Range 100°F to 240°F (38°C to 116°C)

Specifications

(also See Table 2)

Switch Action SPDT

Cover Finish Gray baked enamel galvanized steel

Shipping Weight 1 lb (0.45 kg)

Dimensions See Figure 5

Agency Certification UL Listed: File E6688

CSA certified: File LR948

Summary of content (6 pages)

PAGE 1
Technical Instructions Document No. 155-019P25 ET 141-2 November 1, 2007 ET 141 Line Voltage Remote Bulb Thermostats Description The ET141 remote bulb thermostat incorporates a temperature-sensitive liquid-filled sensing element that actuates precision snap-acting switches through a diaphragm and linkage mechanism. The switches are Single-Pole, Double-Throw (SPDT) snap-acting type, totally enclosed, and are suitable for low or line voltage power switching.
PAGE 2
Technical Instructions Document Number 155-019P25 November 1, 2007 ET 141 Line Voltage Remote Bulb Thermostats Warning/Caution Notations WARNING Personal injury or loss of life may occur if you do not perform a procedure as specified. CAUTION Equipment damage or loss of data may occur if you do not follow a procedure as specified. Table 2. Specifications. Product Number Scale Range Bulb Size Max. Bulb Temp. Capillary Length Switch Differential 141-0520 30°F to 110°F (-1°C to 43°C) 4" × 0.
PAGE 3
ET 141 Line Voltage Remote Bulb Thermostats Duct Installation Using Kit 808-517 General Guidelines Instructions Technical Instructions Document Number 155-019P25 November 1, 2007 • Mount the thermostat with the remote bulb in the return air duct where there is free air circulation. Use remote bulb holder kit 808-517 which consists of a flange and bulb holder. • Make sure the remote bulb does not come in direct contact with any metal surface that could cause excessive vibration and damage the element.
PAGE 4
Technical Instructions Document Number 155-019P25 November 1, 2007 Mounting and Installation, continued Well Mounting Using Kits 141-337 and 141-338 ET 141 Line Voltage Remote Bulb Thermostats For use up to 300 psi @ 250°F (2,068 kPa @ 121°C) 1. Install the bulb well into the tank. 2. Remove the bushing from the bulb well and slide the bushing over the capillary. 3. Replace the bushing into the bulb well, gently pushing the bulb into position in the bottom of the well. 4.
PAGE 5
ET 141 Line Voltage Remote Bulb Thermostats Wiring Diagrams Technical Instructions Document Number 155-019P25 November 1, 2007 All wiring should be done according to the National Electrical Code (NEC) and local regulations. This control has an SPDT snap action switch. The bottom terminal (red) is the common terminal. The middle terminal (blue) has an open-on-rise switch action. The top terminal (yellow) has a close-on-rise switch action. See Figure 3. Figure 3. Wiring Diagrams.
PAGE 6
Technical Instructions Document Number 155-019P25 November 1, 2007 ET 141 Line Voltage Remote Bulb Thermostats Dimensions Figure 5. Dimensions in Inches (Millimeters in Parentheses). 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. Products or company names mentioned herein may be the trademarks of their respective owners. © 2007 Siemens Industry, Inc.