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SIEMENS Powers Controls TH 192-3 Series Day Night Vent Room Thermostat Instruction Manual
TH 192 DN Day-Night and DNV Day-Night-Vent Room Thermostat
Technical Instructions
Document Number 155-067P25
February 11, 2022
TH 192 DN and DNV
Thermostat Details
Figure 6. TH 192 DN and DNV Thermostat Details.
1. Use a test thermometer to read the current room temperature.
Thermometer
Calibration
2. Place a screwdriver in the center of the thermometer assembly (Figure 6). Carefully
rotate thermometer assembly until the pointer tip indicates the correct room
temperature.
NOTE: Avoid breathing on or touching the bimetal spiral since this influences the
temperature reading.
Changeover Point
Adjustment
The changeover point is factory set to occur between 19 and 22 psi (131 and 152 kPa).
The changeover point can be field adjustable to occur between 14 and 22 psi (96 and
152 kPa).
1. Connect a pressure gauge or manometer to measure the supply pressure to the
thermostat. Use 30 psi (207 kPa) supply through a positioning switch so that pressure
can be fully variable.
2. Determine the current changeover point. Turn the day dial so that day and night
control pressures are different. Then, note the changeover point on the control gauge
as the supply pressure changes.
3. Remove the thermometer for access to the changeover adjust screw. Use a 1/16"
Allen Hex Key to adjust the changeover adjust screw as follows:
a. If changeover is too high, turn off the supply pressure and rotate the changeover
adjust screw clockwise. One turn decreases the changeover point by about 3 psi
(20 kPa). Turn on the supply pressure and recheck to verify the new changeover
point.
b. If changeover is too low, turn off the supply pressure and rotate the changeover
adjust screw counterclockwise. One turn increases the changeover point by
about 3 psi (20 kPa). Turn on the supply pressure and recheck to verify the new
changeover point.
Siemens Industry, Inc.
Page 7
| General | Details |
|---|---|
| Name | SIEMENS Powers Controls TH 192-3 Series Day Night Vent Room Thermostat Instruction Manual |
| Make | SIEMENS |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.16 MB |
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