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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 (main) air line.
3.
Place a piece of tape on the supply air line 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
vertical position, see Figure 5.
1.
Complete the required air line connections 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 polyethylene (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.
Loosely screw adapter base to the multi-slotted 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.
Guide screws through the 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 place.
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.
Page 2 of 4
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 when mounting the
cover (see Figure 1).
Use either 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.
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 cover
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 thermostat
can bend the latch arms beyond their operating
positions. If this occurs, bend the latch arms back to
their operating positions before 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
TB 214
TH 192 Adapter Kits
Document Number
155-231
Siemens Industry, Inc.
.
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