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Technical Instructions

Low Temperature Detection Cut-out and Alarm Thermostat

Document Number 155-016P25
Rev.1, February, 2000

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. Powers is a trademark of Siemens Building Technologies, Inc. © 2000 Siemens Building Technologies, Inc.

Siemens Building Technologies, Inc.
Landis & Staefa Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089-4513
U.S.A.

Document No. 155-016P25
Printed in the U.S.A.

Page 6

Adjustment

After mounting the thermostat, adjust the temperature setting using the set point
adjusting screw on the top of the enclosure. See

Figure 4.

Observe a complete operating cycle to be sure that all components function correctly.

Figure 4. Set Point Adjustment Screw.

Calibration

There is no field calibration required for the thermostat.

Troubleshooting

Observe a complete operating cycle to be sure that all components function correctly.

Service

There is no servicing of the thermostat. Replace if inoperative.

Dimensions

Figure 5. Dimensions in Inches (Millimeters).

Summary of Contents for Powers ET 134 Series

Page 1: ... condition Features Manual reset Easy temperature setting with adjusting screw on top of enclosure Mounting bracket and two screws included Main and separate reverse acting auxiliary contacts Product Number 134 1504 Warning Caution Notations WARNING Personal injury loss of life may occur if a procedure is not performed as specified CAUTION Equipment damage or loss of data may occur if the user doe...

Page 2: ...nch OD x 20 feet 6 m Reset action Manual Electrical rating See Table 1 Weight 2 4 lbs 1 1 kg Dimensions See Figures 2 and 5 Approvals UL file SA 3863 CSA file LR948 Operation This thermostat incorporates a temperature sensing element of the vapor filled type which actuates a heavy duty contact through a rugged link mechanism Any one foot length of the element subjected to temperatures below the te...

Page 3: ... element bellows points down Install as much of the bulb as possible in a horizontal plane If too much of the bulb is vertical it will not operate properly Avoid sharp bends or kinks in the sensing element Large walk in Ducts Figure 1 1 Attach the mounting bracket to the thermostat with the two round head screws provided 2 Mount the two perforated steel strap hangers inside the duct with the wide ...

Page 4: ...e opposite side of the duct near the bottom from where the thermostat will be mounted 3 Mount a second flange on a 8 inch by 4 inch sheet metal plate Cut an access opening for the bulb on the duct diagonally across from the duct mounted flange Drill mounting screw holes for the sheet metal plate 4 Cut a length of copper tubing to fit diagonally across the duct Stretch out the bulb and wrap it arou...

Page 5: ...age to the equipment Make all wiring connections using copper conductors only and in accordance with the National Electrical Code and local regulations Loads exceeding the rating of the thermostat should be handled by means of a relay or motor starter An opening for 1 2 inch conduit is provided in the bottom of the thermostat enclosure See Figure 3 for a typical wiring diagram Figure 3 Typical Wir...

Page 6: ...Deerfield Parkway Buffalo Grove IL 60089 4513 U S A Document No 155 016P25 Printed in the U S A Page 6 Adjustment After mounting the thermostat adjust the temperature setting using the set point adjusting screw on the top of the enclosure See Figure 4 Observe a complete operating cycle to be sure that all components function correctly Figure 4 Set Point Adjustment Screw Calibration There is no fie...

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