SIEMENS TH193 HC Heating-Cooling Room Thermostat Instruction Manual
Document No. 129-078
Installation Instructions
March 15, 2022
Table 1. Troubleshooting Guide.
Heating Calibration
Problem
Check
Cause
Action
1. If not already done, remove the cover using the
calibration tool. Verify that the room temperature
is between 70°F and 80F (21°C and 27C).
Control pressure Air supply
stays at
approximately
Nozzle or
zero
Low supply
pressure
As required
Dirt on nozzle or Clean nozzle or
flapper
2. Verify that the supply pressure is 25 psi
(172 kPa). Set the heating dial to the 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.
flapper
replace
thermostat
Restrictor
Clogged restrictor Replace
restrictor
Calibration Out of calibration Recalibrate
Control pressure Nozzle
stays at
approximately
supply pressure
Clogged nozzle
Clean nozzle or
replace
thermostat
3. Moisten the needle and insert the test gauge and
needle adapter in the heating test port (Figure 5).
Read the control pressure.
Calibration Dirt on either
Alternately close
supply or exhaust and open nozzle
valve seat
by gently
pushing down
the bimetal
4. Check the control pressure. If it does not read 7
to 8 psi (48 to 55 kPa), turn the calibration screw
(Figure 4) using the 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.
Excessive air Supply and Connections are As required
leakage from return line interchanged or
exhaust port on connection connection to port
left side of
thermostat
is incorrect
References
Troubleshooting
Document
Number
Before troubleshooting the thermostat (see Table 1),
make certain there is clean dry supply air at 18 psi
(124 kPa) minimum. Use the test probe gauge and
needle adapter to measure the control pressure at
the output pressure test port (Figure 5). The output
pressure test port is accessible without removing the
thermostat cover through the 8th opening from the
top as follows:
155-068P25
Free Energy Band TH193-4, TH193HC
Heating/Cooling Room Thermostat Technical
Instructions
TB 214, TH192 Adapter Kits Technical Bulletin
155-231P25
155-244P25
TB 237, Accessories for Installation of TH192,
Free Energy Band TH193, or TH194 Room
Thermostats Technical Bulletin
Dimensions
For one-pipe thermostats, the test port is on the
right side.
For two-pipe thermostats, the test port is on the
left side.
CAUTION:
If you use the wrong test port,
thermostat damage can occur and
result in replacement of the device.
Figure 6. TH193 HC Dimensions in Inches (Millimeters).
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. Free Energy Band is a trademark of Siemens Industry, Inc. Product or company names mentioned
herein may be the trademarks of their respective owners. © 2009-2022 Siemens Industry, Inc.
Siemens Industry, Inc.
Smart Infrastructure
Buffalo Grove, IL 60089-4513
USA
Your feedback is important to us. If you have
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Document No. 129-078
Printed in the USA
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Tel. +1 847-215-1000
| General | Details |
|---|---|
| Name | SIEMENS TH193 HC Heating-Cooling Room Thermostat Instruction Manual |
| Make | SIEMENS |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.07 MB |
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