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Document No. 129-116
Installation Instructions
September 24, 2009
Installation
The following general procedures apply to all
thermostat installations. Notice that some
installations require the use of the adapter frame
(192-308) to cover paint lines, broken walls, etc. For
installations not included in this document, remove
the existing terminal and connect directly to the
tubing (see Figure 1).
Removing Existing Thermostat
1. Remove the existing thermostat from the wall.
2. Remove the terminal head and the gasket from
the fitting.
3. Clean the surface of the fitting, if required.
Installing New Thermostat
See Figure 1 for typical thermostat installation.
1.
Table 1 lists the figures that correspond to a
particular thermostat application. See the
appropriate figure to identify the mounting parts.
2.
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 (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.
3. Place the multi-slotted metal plate into the
plastic adapter frame (plastic frame may or may
not be required). Attach the multi-slotted plate to
the terminal head or the wall using screws and
slots shown in Figures 3 through 26.
4. Loosely screw adapter base to the multi-slotted
plate.
5. Draw plastic tubing through the multi-slotted
plate and the adapter base. Install the plug-in
adapters on the wall plate.
Page 2 of 12
6. Using mounting screws supplied with the
thermostat chassis, install the wall plate on
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.
7. 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.
8. Configure the cover per installation instructions
provided and mount the cover over the
thermostat.
NOTE:
For applications that use the 1/2-inch
large setpoint 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-inch Allen wrench
to tighten the two screws that secure the cover
in place.
Siemens Industry, Inc.
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