Document No. 129-102
Installation Instructions
March 6, 2018
Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and
models as design improvements are introduced. © 2018 Siemens Industry, Inc.
Siemens Industry, Inc.
Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089-4513
USA
Tel. +1 847-215-1000
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Document No. 129-102
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Page 3 of 3
8. Remove the screw and nut holding the aspirator
plate (9) to the back of the new cover (11). Insert
the aspirator nozzle (8) through the aspirator
plate and reattach it. Tighten until finger tight.
Align holes on the aspirator plate (9) and cover
(11) and fasten securely.
9. If the distance from the back of the wall box
(inside) to the mounting surface exceeds
1-9/16 inch (14 mm), the cover mounting screws
(12) will be too short. Use two 6-32 hex 1/2”
spacer posts (Grainger 6NZWS, Keystone
No. 1952) to correct this problem.
10. Connect the tubing on the terminal plate to the
nozzle fitting (8). A wire coil, which will help
prevent kinking, is provided inside the tubing.
Slide the tubing retainer (7) over the fitting to
secure the connection.
11. If there is a sealing gasket on the surface
around the wall box, remove and discard it.
Make sure the surface is clean. Three new seal
gaskets (10) are already attached to the back of
the new cover.
12. Position the cover (11) over the wall box. Be
sure the tubing does not press against the
thermostat bimetal. Tighten the two socket head
cover screws (12) with a 5/64-inch (2 mm) hex
Allen wrench until the seal gaskets are
compressed and the cover is tight against the
mounting surface.
CAUTION:
There must be a tight seal between the
cover and the wall box to have proper air
flow over the bimetal sensor.
Reference
Specifications, application, operation and
installation of thermostats:
POWERS CONTROLS TH 192 S Single
Temperature Room Thermostat Technical
Instructions -
155-065P25 (TH 192-1)
POWERS CONTROLS TH 192 HC Heating/Cooling
Room Thermostat Technical Instructions -
155-066P25 (TH192-2)
POWERS CONTROLS TH 192 DNV Day-Night-Vent
Room Thermostat Technical Instructions -
155-067P25 (TH192-3)
