Brochure

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A-3
www.sbt.siemens.com/hvp/components
Description
Applications
Thermostats & Hygrostats
Powerstar Room Thermostats
Overview
Proven to provide fast response and highly accurate tem-
perature control, Powerstar Pneumatic Room Thermostats
are designed to control heating and/or cooling by operating
a variety of pneumatic devices such as valves or damper
actuators.
Powerstar thermostats are factory-calibrated to control
pneumatic devices over a 3 to 15 psi (103 to 207 kPa)
range.
Powerstar pneumatic room thermostats are available for
the following applications:
• Single Temperature
• Day/Night
• Day/Night/Vent
• Heating/Cooling
Covers are available with concealed or exposed set point
adjustment, room temperature indication, and set point
indicator.
• Free Energy Band
• Free Energy Band
with Hesitation
Selection Guide
Control Control Control Air Output
Air Supply Applications Outputs Set Points Actions Capacity Model
Low High
(1-pipe) (2-pipe)
15 to 30 psi • Heat or Cool Single Single Direct/Reverse 192 S
(103 to 207 kPa)
Cool 18 psi (124 kPa) • Heat and Cool (auto changeover) Single Dual Direct/Direct 192 HC
Heat 25 psi (172 kPa) • Factory-calibrated (194 HC) for (Heat/Cool) Reverse/Reverse 194 HC
Honeywell or Johnson retrofit Direct/Reverse
Reverse/Direct
Day 18 psi (124 kPa) • Day and Night (auto changeover) Single Dual Direct/Direct 192 DN
Night 25 psi (172 kPa) • Factory-calibrated (194 DN) for (Day/Night) Reverse/Reverse 194 DN
Honeywell or Johnson retrofit
• R2 vent (“0”) day, full supply night
(DNV only, 3-pipe)
• Night override selector switch
Day 18 psi (124 kPa) • Day and Night (auto changeover) Dual Dual None 192 DNV
Night 25 psi (172 kPa) • Factory-calibrated (194 DN for (Day/Night 194 DNV
Honeywell or Johnson retrofit) with Vent)
• R2 vent (“0”) day, full supply night
(DNV only, 3-pipes)
• Night override selector switch
15 to 30 psi • Heat and Cool Dual Dual Direct/Direct 193 HC Free
(103 to 207 kPa) • Sequence-controlled devices with (Heat/Cool) Reverse/Reverse Energy Band
two control lines (same or different Direct/Reverse
range) Reverse/Direct
15 to 30 psi • Heat and Cool Single Dual Direct/Direct 193 HC Free
(103 to 207 kPa) • Sequence-controlled devices with (Heat/Cool) Energy Band
one control line (different spring (Hesitation)
ranges)
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