Data Sheet for Product
Technical Instructions Free Energy Band TH 193 HC Heating/Cooling Room Thermostat
Document Number 155-068P25
February 14, 2022
Page 8 Siemens Industry, Inc.
Cooling Calibration
Step 1 —
Remove the cover using the 192-632
Calibration Tool. Verify that the room
temperature is between 70°F and
80F (2°C and 27C).
Step 2 —
Verify that the supply pressure is 18 to 25 psi (124
to 172 kPa). Set the cooling dial to room
temperature by turning the exposed adjustment
knob or 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 a 1/8-inch (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.