
Installation Instructions
Retrostat Kits for POWERS™ CONTROLS
TH 180, TH 182 D/N or H/C Thermostats
Document No. 129-179
October 4, 2017
Product Description
The Retrostat kits replace a discontinued Powers Controls
TH 180 or TH182 day/night or a heating/cooling pneumatic
thermostat with a TH 192 direct or reverse acting, two
pipe, dual temperature pneuma tic device.
Contents
Retrostat Cover Kit 1
Thermostat * 1
Adapter frame 1
Bag assembly with installation hardware 1
Optional 1/2-inch Large, Exposed Set
Point Knob
* Includes thermostat installation instructions.
1
Expected Installation Time
1 hour
Requir ed Tools
• Calibration and cover screw wrench (192-632) or
1/16” Allen wrench and 1/8” open-end wrench
• Medium flat-blade screwdriver
• Small level
• Accurate thermometer
• Needle nose pliers
Product Numbers
(See Notes
1 and 2)
Day/
Night
Heat/
Cool
NOTE:
For Retrostat Kits with optional 1/2-inch large, exposed
setpoint adjustment knob, order standard kit with “K”
suffix.
Direct
Reverse
Direct/
Reverse
°F
°C
°F
°F
°C
180-410
180-413
180-910
180-913
182-500
182-501
182-627
182-630
182-632
180-937
182-503
180-420
180-423
180-920
180-923
182-506
182-507
182-633
182-634
192-3044
192-3144
192-3054
192-3084
192-3184
Prerequisites
• Review all of these instructions before you begin
installation.
• Check job drawings for any site-specific
information.
• Verify the existing thermostat installation has its
supply and return air lines connected properly.
• Obtain the installation instructions provided with
the thermostat in this Retrostat Kit. The document
provides instructions for calibrating the thermostat.
• Ensure that a supply of wall anchors and plastic
ti es are availa ble.
Item Num ber 129-179+3, Rev. EA Page 1 of 4

Document No. 129-179
Installation Instructions
October 4, 2017
Installation
Removing Existing Thermostat
1. Remove the existing thermostat from the wall.
2. Plug the supply (mai n) air line.
3. Place a piece of tape on the supply air l ine to identify
it.
4. Remove the terminal head and the gasket from the
fitting.
5. Clean the surface of the fitting, if required.
Installing New Thermostat
Figure 1 shows a typical thermostat installation.
To connect directly to copper tubing, see Figures 2 and 3.
To connect to the terminal head, see Figure 4.
To convert the thermostat from a horizontal position to a
vertica l posit ion, s ee Figure 5.
1. C omplet e t he requir ed air lin e c onnecti ons as
necessary. Secure all connections and install the
plug-in adapters into the 5/32-inch (4 mm) plastic
tube. Use the blue adapter for the supply air line. See
Figure 1.
NOTE: Either polyet hylene (hard, black) or
polyurethane (soft, clear) tubing is
recommended. The appropriate tubing depends
on which is most compatible for the application.
2. Place the multi-slotted metal plate into the adapter
frame, if required. Attach the multi-slotted plate to the
terminal head or the wall using screws and slots
shown in Figures 2 through 5.
3. Loos ely screw adapter base to the multi- slott ed plate.
4. Draw plastic tubing through the multi-slotted plate and
the adapter base. Install the plug-in adapters on the
wall plate.
5. Using mounting screws supplied with the thermostat
chassis, install the wall plate on the adapter base as
follows:
a. Gui de screw s thr ough th e slotted key holes on
the wall plate and partially insert them into the
adapter base.
b. Orient the wall plate so that it is square and level.
c. Tighten the mounting screws to secure the wall
plate in p l ace.
6. 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.
7. Configure the cover per installation instructions
provided and mount the cover over the thermostat.
NOTE: For applications that use the 1/2-inch large
set point adjustment knob, align the key
hole in the cover over the shaft protruding
from the thermostat whe n mounting the
cov er (see Figure 1).
Use either the hex key end of the calibration and
cover screw wrench or a 1/16” Allen wrenc h to ti ghten
the two screws that secure the cover in place.
8. Place the optional 1/2-inch large set point adjustment
knob on the shaft protruding through the cover. Use
either the hex key end of the calibration and co ver
screw wrench or a 1/16” Allen wrench to tighten the
set screw on the knob.
NOTES:
1. In applications with a 1/2-inch large set point
adjustment knob, whenever you remove the
thermostat cover, first remove the adjustment knob by
loosening its set screw with either the hex key end of
the calibration and cover screw wrench or a 1/16”
Allen wrench.
2. To remove the thermostat from the wall plate, hold the
thermostat firmly at the top and bottom and start to
pull the thermostat from the wall plate. At the same
time, use a screwdriver to pry the wall plate latch
arms away from the thermostat chassis and pull the
thermostat away from the wall plate.
Frequent removal and installation of the th ermos tat
can bend the latch arms beyond their operating
positions. If this occurs, bend the latch arms back to
their operating positions be fore mounting the
thermostat.
The installation is complete.
Calibration, Adjustment, and
Troubleshooting
See the installation instructions provided with the
thermostat in this retrostat kit for the following procedures:
• Thermometer Calibration
• Changeover Point Adjustment
• Limit Stop Adjustment
• Sensitivity Adjustment
• Thermostat Cooling/Heating Calibration
• Troubleshooting
Reference
Technical Bulletin Document Number
TB 214 TH 192 Adapter Kits 155-231
Page 2 of 4 Siemens Industry, Inc..