Siemens TH 192 DN Technical Instructions Download

Page: 12 / 13

Technical Instructions
Document Number 155-067P25
October 28, 2010

Page 12

Siemens Industry, Inc.

Chassis Tube
Connector and
Restrictor Plate
Replacement

1. Remove thermostat chassis from wall. Terminal does not have a ball check valve.

NOTE:

You must close off the supply air. For example, use a connector with the supply air
terminal plugged.

2. Remove two Phillips head screws from connector on back of thermostat chassis. Pull

connector out of recess. If necessary, pry connector loose with a screw driver, but be
careful not to damage restrictor plate and gasket.

3. Remove gasket from under connector. Remove restrictor. Remove second gasket from

under restrictor.

4. Use restrictor replacement kit 192-321 to replace gasket, restrictor, and second gasket.

NOTE:

The restrictor plate is keyed to ensure proper orientation during installation.

5. Remove filters from existing connector and insert in new connector. Or, if filters are dirty,

use restrictor replacement kit 192-321 to replace filters.

6. Use chassis tube connector replacement kit 192-525 to replace connector and mounting

screws.

Service Parts

The following chart lists accessory parts and tools available for thermostat service.

Description Part

Number

Dial thermometer (-40 to 140

F, -40 to 60

C) with pocket case

141-0573

Basic pneumatic calibration kit with thermometer, gauge, squeeze
bulb, fittings, and case

832-177

Test head kit

832-179

Calibration tools

832-178

Test probe to check pressure with cover on

Needle probe with 1-1/2” diameter gauge 0-30 psig
(0-200 kPa) and calibration/cover wrench

192-633

Needle probe, no gauge (package of five)

192-759

1-1/2” diameter gauge , 0-200 kPa,
back connected 1/8” NPT male

142-0344

1-1/2” diameter compound gauge, 0-30 psig/0-200 kPa,
back 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

Summary of Contents for TH 192 DN

Page 1: ...ions 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 for day and night modes DN models Two separate adjustable temperature setpoint indicating dials Two highly sensitive bimetal thermostatic elements Operating mode automatically switches from day to night on change of main ai...

Page 2: ...n evenings and weekends to reset the control system to the night mode ensures optimum energy management When a zone is operating in maximum economy mode at night an occupant can reset an individual space to day temperature by switching a manual override During night control the TH 192 DNV provides a separate output signal full air supply which allows ventilation to occur TH 192 DN DNV thermostats ...

Page 3: ...upply output signal required for ventilation control 4 Where is setpoint adjustment knob located a Adjustment knob located at bottom of chassis b Adjustment knob on front with 1 2 inch large exposed knob Table 2 TH 192 DN DNV Thermostat Chassis Part Numbers Chassis with Wall Plate Fahrenheit Celsius Connection Type Control Action Exposed at Bottom of Cover Exposed 1 2 Knob on Cover Exposed at Bott...

Page 4: ...e plastic cover option add W suffix code to cover part number for example 192 256W See Table 2 a For white metal cover option add H suffix code to cover part for example 192 356H See Table 3 Table 3 TH 192 DN DNV Thermostat Cover Part Numbers Cover Configuration Cover Part Number See Note 2 Setpoint Adjustment Thermometer Setpoint Indicator Standard Plastic Cover Standard Metal Cover Concealed 192...

Page 5: ...0 C Ambient operating temperature 40 to 140 F 4 to 60 C Temperature response 0 1 F 0 06 C Dial graduations 2 F 1 C Factory settings Calibration 72 F 22 C 7 5 psi 52 kPa Sensitivity 2 5 psi F 31 kPa C Limit stop adjustment 45 and 85 F 7 and 30 C Standard cover Cycolac desert beige Shipping weight 0 7 lbs 0 3 kg Dimensions See Figure 4 Accessories See the following Technical Bulletins for informatio...

Page 6: ...anual Selector Switch A manual selector switch allows an individual thermostat to control at its day setting even though the remainder of the system is controlling at its night setting In the normal AUTO position the manual selector switch does not interfere with air passage to the changeover relay To manually set the selector switch to the DAY position push the selector in until it latches and th...

Page 7: ...n 14 and 22 psi 96 and 152 kPa 1 Connect pressure 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 day dial so day and night control pressures are different Then note the changeover point on the control gauge as the supply pressure changes 3 Remove thermome...

Page 8: ...th 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 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 po...

Page 9: ...alibrate the instrument Day Time 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 daytime 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 Moi...

Page 10: ...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 2 mm wrench until...

Page 11: ...ing Output Pressure Test Port Table 4 Troubleshooting Guide Problem Check Cause Action Air supply Low supply pressure As required Nozzle or flapper Dirt on nozzle or flapper Clean nozzle or replace thermostat Restrictor Clogged restrictor Replace restrictor Control pressure stays at approximately zero Calibration Out of calibration Recalibrate Nozzle Clogged nozzle Clean nozzle or replace thermost...

Page 12: ...placement kit 192 321 to replace filters 6 Use chassis tube connector replacement kit 192 525 to replace connector and mounting screws Service Parts The following chart lists accessory parts and tools available for thermostat service Description Part Number Dial thermometer 40 to 140 F 40 to 60 C with pocket case 141 0573 Basic pneumatic calibration kit with thermometer gauge squeeze bulb fittings...

Page 13: ... package of 20 192 486 Air link connects adapters for pressure tests package of 20 192 501 Compression ring package of 100 141 388 Elbow provides quick return for wall surface mounting blue package of 20 192 487 Elbow provides quick return for wall surface mounting white package of 20 192 488 20 scim 5 4 ml sec restrictors for 1 pipe systems package of 5 1 4 6 4 mm O D plastic barb unless noted Br...

Search results

Summary of Contents for TH 192 DN

Reviews:

Related manuals for TH 192 DN

Brands by name

Popular brands

Siemens TH 192 DN, Technical Instructions

Search results

Summary of Contents for TH 192 DN

Reviews:

Related manuals for TH 192 DN

Brands by name

Popular brands