Data Sheet for Product
TH 192 DN Day-Night and DNV Day-Night-Vent Room Thermostat Technical Instructions
Document Number 155-067P25
February 11, 2022
Siemens Industry, Inc. Page 9
Thermostat
Calibration
The thermostat is factory calibrated to a control pressure of 7.5 psi (52 kPa) when the
setpoint and the ambient temperature are both at 72°F (22°C). The factory sensitivity
setting is approximately 2.5 psi/F (31 kPa/C). No adjustments are required if these
settings are appropriate for the application. If the thermostat has been tampered with, the
sensitivity has been changed, or is out of adjustment, use the following steps to
re-calibrate the instrument.
Day Time Calibration
Step 1 —
Remove the cover using the 192-632
calibration tool. Verify that the room
temperature is between 70 and 80F
(21 and 27C).
Step 2 —
Verify that the supply pressure is 18 psi
(124 kPa). Set the daytime dial to room
temperature by turning the exposed adjustment
knob or by using a hex key as shown. Allow the
thermostat to stand for about five minutes to
adjust to the new setting.
Step 3 —
Moisten the needle and insert the
192-633 test gauge and needle
adapter in the test port. Read the
control pressure.
Step 4 —
If the control pressure does not read 7 to 8 psi (48
to 55 kPa), turn the calibration screw using the
192-632 calibration tool or 1/8” (3.2 mm) wrench
until the pressure is 7 to 8 psi (48 to 55 kPa). The
sensing element is now in calibration and the
setpoint can be changed to the desired room
temperature.