Powers
®
Controls
Technical Instructions
Document No. 155-066P25
TH 192-2
October 26, 2010
TH 192 HC Heating/Cooling Room
Thermostat
80
60
70
TH0356R1
POWERS
60
50
70
80
Description
The TH 192 HC thermostats are proportional single output, dual setpoint, 2-pipe (high
air capacity) sensor controllers. Each thermostat includes a wall mounting plate for
installation in a variety of rough-in terminal boxes. Sensitive bimetals respond to
temperature change to modulate control air through a flapper nozzle. Two setpoint dials
are provided. When the supply air pressure changes from 18 to 25 psi (124 to 172
kPa), the thermostat automatically switches from the cooling to the heating setpoint
respectively. Air connections are made with 5/32” (4 mm) O.D. plastic tubing, directly to
the thermostat chassis for retrofit applications or with plug-in adapters (provided with
the TH 192 rough-in terminal box or optional accessories) which slide into the wall
mounting plate.
Features
•
Direct and reverse acting models for heating and cooling modes.
•
Separate adjustable temperature setpoint indicating dials for heating and cooling.
•
Fahrenheit or Celsius setpoint dials.
•
Highly sensitive bimetal thermostatic element.
•
Individual field adjustable sensitivity with graduated scale.
•
Operating mode automatically switches between heating and cooling on change of
main air supply pressure.
•
Integral field adjustable limit stops.
•
Control pressure test port accessible without removing cover.
•
Easily replaceable thermometer, setpoint dials, filters, and restrictor plate.
•
Covers available for concealed or exposed thermometers and for either concealed,
key, or exposed knob adjustment and setpoint indication.
•
Standard plastic thermostat covers provide Desert Beige or white finish.
Siemens Industry, Inc.
