Siemens Thermostat Chassis & Wall Plate - Day & Night Reverse Acting

The TH 192 DN & DNV thermostats are proportional single output, dual set point, 2-pipe or 3-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 set point dials are provided. When the supply air pressure changes from 18 to 25 psi (124 to 172 kPa), the thermostat automatically switches from the day to the night set point respectively. Air connections are made with 5/32? (4 mm) OD 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 for day and night modes (DN models) Two separate adjustable temperature set point indicating dials Two highly sensitive bimetal thermostatic elements Operating mode automatically switches...