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Technical Instructions
Document No. 155-066P25
October 26, 2010

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. Powers is a registered trademark of Siemens Industry, Inc. Other product or company names mentioned
herein may be the trademarks of their respective owners. © 2010 Siemens Industry, Inc.

Siemens Industry, Inc.

Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089-4513
USA

Your feedback is important to us. If you have
comments about this document, please send them
to

[email protected]

Service Parts

(Continued)

Description Part

Number

Replacement thermometer kits, brown (packages of 5)

Scale Range

Thermostat Model

45° to 85°F

192-775

10° to 30°C

TH0443R1

Model 3 and Up

192-776

45° to 85°F

192-786

10° to 30°C

TH0442R1

Models 1 and 2

192-785

Replacement setpoint dials (packages of 10)

°F, Direct Acting

192-779

°F, Reverse Acting

192-780

°C, Direct Acting

192-783

°C, Reverse Acting

Right Side

192-784

°F, Direct Acting

192-777

°F, Reverse Acting

192-778

°C, Direct Acting

192-781

°C, Reverse Acting

Left Side

192-782

Document No. 155-066P25

Printed in the USA

Page 12

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Содержание TH 192 HC

Страница 1: ... chassis for retrofit applications or with plug in adapters provided with the TH 192 rough in terminal box or optional accessories which slide into the wall mounting plate Features Direct and reverse acting models for heating and cooling modes Separate adjustable temperature setpoint indicating dials for heating and cooling Fahrenheit or Celsius setpoint dials Highly sensitive bimetal thermostatic...

Страница 2: ...imum economy and occupant comfort automatically as seasons change from the heating setpoint 65 68 F 10 20 C to the cooling setpoint 76 80 F 24 27 C TH 192 HC thermostats are available with covers that conceal or expose the setpoint adjustment dials Figure 1 Typical TH 192 HC Thermostat Application Piping TO CONTROLLED DEVICES AIR SUPPLY R1 S TH 192 HC 2 PIPE THERMOSTAT TH0256R1 Figure 2 TH 192 HC ...

Страница 3: ...tpoint adjustment cover or key type cover See Table 2 Covers See Table 2 for product number and ordering information on TH 192 HC thermostat covers 1 Is the setpoint adjustment exposed for customer adjustment or concealed to prevent alteration of setting 2 Is the thermometer exposed or concealed 3 Is the setpoint indication exposed or concealed behind cover 4 Is a plastic or zinc cast metal cover ...

Страница 4: ...t knobs 2 To order a plastic cover with white finish add the W suffix code To order a metal cover with a white finish add the H suffix code Specifications Control action See Table 1 Operating ranges 45 to 85 F 7 to 30 C Supply air pressure maximum 30 psi 207 kPa Normal air supply pressure Heating 25 psi 172 kPa Cooling 18 psi 124 kPa Sensitivity adjustment 1 to 4 psi F 12 to 50 kPa C Nominal air c...

Страница 5: ...rect or reverse acting cooling control In direct acting control an increase in temperature increases the control air pressure and a decrease in temperature decreases the control pressure In reverse acting control an increase in temperature decreases the control air pressure and a decrease in temperature increases the control pressure The TH 192 HC provides two separate bimetal elements one for hea...

Страница 6: ...gauge or manometer to measure supply pressure to thermostat Use 30 psi 207 kPa supply through a positioning switch so pressure can be fully variable 2 Determine current change over point Turn cooling dial so cooling and heating control pressures are different Then note the changeover point on the control gauge as the supply pressure changes 3 Remove thermometer for access to changeover adjustment ...

Страница 7: ...een the setpoint cam gear teeth Rotate limit stop to its new position Do not pull 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 7 TH 192 HC Limit Stop Adjustments Sensitivity Adjustment To change thermostat sensitivity use a flat blade screwdriver to carefully move the sensitivity sl...

Страница 8: ...ng Calibration Step 1 Remove cover using 192 632 calibration tool Verify room temperature is between 70 and 80 F 21 and 27 C Step 2 Verify that supply pressure is 18 psi 124 kPa Set cooling dial to room temperature by turning the exposed adjustment knob or using a hex key as shown Allow thermostat to stand for about five minutes to adjust to the new setting Step 3 Moisten needle and insert 192 633...

Страница 9: ... room temperature by turning the exposed adjustment knob or using a hex key as shown Allow thermostat to stand for about five minutes to adjust to the new setting Step 3 Moisten needle and insert 192 633 test gauge and needle adapter in the test port Read control pressure Step 4 If control pressure does not read 7 to 8 psi 48 to 55 kPa turn calibration screw using 192 632 calibration tool or 1 8 3...

Страница 10: ...y gently pushing down the bimetal Figure 9 Accessing Output Pressure Test Port Excessive air leakage from exhaust port on left side of thermostat Supply and return line connection Connections are interchanged or connection to port is incorrect As required Chassis Tube Connector and Restrictor Plate Replacement 1 Remove thermostat chassis from wall Terminal does not have a ball check valve NOTE You...

Страница 11: ...ck connected 1 8 NPT male 142 0373 1 1 2 diameter compound gauge 0 30 psig 0 200 kPa bottom connected 1 8 NPT male Replacement for use with 192 633 142 0426 Chassis tube connector replacement kit with mounting screws material for 10 thermostats included 192 525 Restrictor plate replacement kit with filters and gasket material for 10 thermostats included 192 321 Plug in adapters for quick thermosta...

Страница 12: ...e IL 60089 4513 USA Your feedback is important to us If you have comments about this document please send them to SBT_technical editor us sbt siemens com Service Parts Continued Description Part Number Replacement thermometer kits brown packages of 5 Scale Range Thermostat Model 45 to 85 F 192 775 10 to 30 C TH0443R1 Model 3 and Up 192 776 45 to 85 F 192 786 10 to 30 C TH0442R1 Models 1 and 2 192 ...

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