Siemens TH192 DN,TH192 DNV Installation Instructions Manual

TH192 DN Day-Night and TH192 DNV
Day-Night-Vent Room Thermostat

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Document No. 129-077

Rev. 2, November, 1999

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The TH192 DN and TH192 DNV thermostats are
proportional single output, dual set point, 2-pipe or 3-pipe
(high air capacity) temperature controllers. Each TH192
DN and DNV chassis includes a wall plate for thermostat
installation in a variety of rough-in installation kits.

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TH192 DN and TH192 DNV

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• Review all instructions before beginning

installation.

• Verify job drawings are available to reference

specific job site information as needed.

• Verify rough-in installation kits (wall-box or tubing

runs) are pre-installed.

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• Medium flat blade screwdriver

• Needle nose pliers

• Small level

• Calibration and Cover Screw Wrench or 1/16”

Allen wrench (192-632)

• NeedleProbewith1-1/2”diameter,0to30psig

(0 to 200 kPa) test gauge (192-633)

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Personal injury/loss of life may
occur if a procedure is not
performed as specified.

datamayoccuriftheuser
does not follow procedure as
specified.

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The TH192 DN/DNV thermostat and wall plate mount
vertically to a wall using a variety of rough-in installation
kits (for example, wall box kits or tubing terminal kits). The
ends of the air lines from the rough-in installation kits have
terminal adapters that snap into the wall plate. Terminal
adapters also are available separately as orderable
accessories. (Note that certain retrofit applications allow
air connections directly to the thermostat chassis).

The “S”, “R1”, and “R2” labels on both the thermostat
chassis and the wall plate identify the air line connections.
The thermostat plugs into the terminal adapters on the
wall plate. The Piping section of this document shows
typical connections.

Two cover screws plus latch arms on the wall plate hold
the thermostat in place. The cover fits over the thermostat
and the two cover screws fasten it to the wall plate.

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The following procedure is for a typical thermostat
installation and assumes the rough-in installation kit is in
place. See Figure 1.

1. The rough-in installation kit provides a supply (blue) air
line and a return air line joined by an air link. Remove
the terminal adapters from the air link and snap them
into the wall plate at their respective locations.

2. Using the mounting screws supplied with the
thermostat chassis, install the wall plate on the wall
as follows:

a. Guide the screws through the slotted key holes

on the wall plate and partially insert them into

wall.
b. Orient the wall plate so that it is square and level.
c. Tighten the mounting screws to secure the wall

plate in place.

3. Moisten the thermostat supply and return ports to
lubricate them. Carefully insert the thermostat ports
into the terminal adapter “O” rings on the wall plate.

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129-077
Installation Instructions
Rev. 2, November, 1999

4. Mount the cover over the thermostat.

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set point adjustment knob, align the key
hole in the cover over the shaft protruding
from the thermostat when mounting the
cover.

Use the hex key end of the calibration and cover screw
wrench or a 1/16” Allen wrench to tighten the two
screws that secure the cover in place.

5. Place the optional 1/2-inch large set point adjustment
knob on the shaft protruding through the cover. Use
the hex key end of the calibration and cover screw
wrench or a 1/16” Allen wrench to tighten the set
screw on the knob.

The installation is complete.

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When converting from Model TH180 or TH182 to the
TH19X, you need:

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• TH192 Chassis.

• A new cover. The TH180 or TH182 cover does not

fit the TH19X chassis or vice versa.

• Terminal adapters. These adapters are required to

retain the plug-in feature only. Otherwise, 5/32”
(4 mm) tubing can connect directly to the
thermostat chassis. Use compression rings (part
number 141-388) to secure connections.

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When converting from competitor models to the TH19X,
you need:

• TH19X Chassis.

• A new cover.

• Adapter Kit (see

Technical Bulletin

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local codes and regulations and must comply
with the local authority having jurisdiction.

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TB-214, TH192 Adapter Kits

, 155-231).

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1. Use a test thermometer to read the current
room temperature.

2. Place a screwdriver in the center of the
thermometer assembly (Figure 4). Carefully
rotate the thermometer assembly until the
pointer tip indicates the correct room
temperature.

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The changeover point is factory set to occur
between 19 and 22 psi (131 and 152 kPa). The
changeover point can be field adjustable to occur
between 14 and 22 psi (96 and 152 kPa).

1.

Connect a pressure gauge or a 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 the current change over point.
Turn the day dial so that the day and night
control pressures are different. Then note the
changeover point on the control gauge as the
supply pressure changes.

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bimetal spiral since this affects the
temperature reading.

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Siemens Building Technologies, Inc.