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Technical Instructions Free Energy Band TH 193 HC Heating/Cooling Room Thermostat
Document Number 155-068P25
February 14, 2022
Page 2 Siemens Industry, Inc.
Optional Design
Features
• Fixed temperature limit stops meet government specifications.
• Metal covers available in standard configurations with Desert Beige finish.
• Competitor adapter mounting kits available.
Application
TH 193 HC thermostats control space temperature and take advantage of the dead
band to "float" room temperature between heating and cooling modes while maintaining
energy management (maximum economy) and occupancy comfort. TH 193 HC
thermostats control valve and damper actuators in building applications that require
early morning heat and afternoon cooling.
Use TH 193 HC two-pipe (dual one-pipe) thermostats with external restrictors (20 scim,
5.4 ml/sec) where a limited air capacity operates a single valve and/or actuator. Use
TH 193 HC three-pipe (dual two-pipe) thermostats where multiple valves and actuators,
used with or without high/low limiting controls, require higher air capacities. The
thermostats are available with covers that conceal or expose the setpoint adjustment
dials.
Figure 1. Typical TH 193 HC Thermostat Application.
Piping
Figure 2. TH 193 HC Thermostat
Dual One-Pipe Connections.