Data Sheet for Product

Technical Instructions TH 192 DN Day-Night and DNV Day-Night-Vent Room Thermostat
Document Number 155-067P25
February 11, 2022
Page 8 Siemens Industry, Inc.
Changeover Point
Adjustment,
Continued
Figure 7. Changeover Point Adjustment.
Limit Stop
Adjustment
Thermostat limit stops define the minimum
and maximum thermostat setpoints. The
limit stops engage in the setpoint cam gear
teeth and cause interference between the
setpoint cam gear and the adjustment
knob gear.
To change the limit stop settings, use
needle nose pliers to pull the limit stop
between the setpoint cam gear teeth.
Rotate the limit stop to its new position. Do
not pull the limit stop any more than
necessary to clear the gear teeth.
Changing the limit stop position one gear
tooth changes the limit stop setting by
1-1/3F (0.7C).
Figure 8. TH 192 DN and DNV
Limit Stop Adjustments.
Sensitivity
Adjustment
To change thermostat sensitivity, use a flat-blade
screwdriver to carefully move the sensitivity slide to
the desired position as follows:
Figure 9. TH 192 DN and DNV
Sensitivity Adjustment.
Graduation
closest to the
rigid end of
the bimetal
element
4 psi/F
(50 kPa/C)
Graduation
closest to the
minimum
(MIN) end of
the bimetal
element
1 psi/F
(12 kPa/C)
NOTE: If the thermostat sensitivity is adjusted,
the thermostat must be recalibrated.