SIEMENS 194-2042 Pnuematic Room Thermostat User Guide
356 Limitem™Rigid Bulb Thermostats
188 Unit M ounted Thermostats
Features
Features
•
Durable copper motor tube and 18” (457mm)
steel rod temperature sensing element.
Two-valve design reduces air waste.
•
Liquid-filled thermal system
temperature sensing element.
Durable die-cast metal case
with rugged setpoint knob.
•
•
•
•
•
Direct or reverse acting models.
Duct mount hardware included.
Rugged, all metal construction.
•
•
Adjustable sensitivity.
Universal mounting bracket for
easy installation.
Applications
•
Integral adjustable limit stops.
The 356 Limitem™Rigid Bulb Thermostat provides
primary control for unit ventilators, fan coils and
other air handling units. This device can also be
used as low limit control for air flow to a controlled space.
Applications
The 188 Unit Mounted Thermostats are designed primarily for use in
fan coil induction units and unit ventilators to control the temperature
within an occupied space. The thermostat’s temperature range is
limited to applications at ambient temperatures.
Available in three temperature operating ranges:
•
•
•
0 to 100 °F (-18 to +38°C)
30 to 180°F(-1 to +82°C)
100 to 250°F(38 to 121°C)
Available with three control actions:
•
•
•
Direct Acting only (Heating)
Reverse Acting only (Cooling)
Click on this link for 356 Limitem Rigid Bulb Technical Instructions
Heat or Cool depending on supply air pressure
Click on this link for 188 Unit Mount Thermostat Technical Instructions
134 Pneumatic High and Low
357 D Limitem™Remote Bulb Thermostats
Temperature Detection Thermostats
Features
Features
•
•
Direct acting operation only.
Remote or averaging bulbs for
•
•
•
Snap-acting pneumatic switch.
Sight-set calibrated setpoint scale.
flexibility in installation
.
No leakage of air prior to reset of
switch
•
Liquid-filling sensing element
for rapid response to changes
in temperature.
•
•
Easily adju.stable settings.
Normally closed air valve; bleeds to
less than 2 psi (14 kPa) when supplied
through a restrictor.
•
•
Two-valve design reduces air
waste.
Adjustable sensitivity.
Applications
Applications
The 134 Pneumatic High and Low Temperature Detection Thermostats
are used on pneumatic heating and cooling systems in areas protected
from the weather.
The 357 D Limitem Remote Bulb Thermostat provides primary
monitoring and control for air handling units or a low limit control.
Available in three temperature operating ranges:
On a typical high limit application, the thermostat shuts down air
conditioning or ventilating fans when the duct temperature becomes
excessively high. A normally closed switch opens at setpoint.
•
•
•
Averaging Bulb Model: 35 to 145°F(2 to 63°C)
Remote Bulb Model: 20 to 100°F(-7 to +38°C)
Remote Bulb Model: 120 to 230°F(48.9 to 110°C)
On a typical high limit application, the thermostat stops the fan or
closes a damper when the temperature drops to the setpoint at any
one foot (30.5 cm) or more of the sensing element.
Click on this link for 357 D Limitem Remote Bulb Technical Instructions
Click on this link for 134 High-Low Temp Detect Technical Instructions
Information in this document is based on specifications believed correct at the time of publication. The right is reserved to make changes as design
improvements are introduced. POWERS is a trademark of Siemens Industry Inc. Product or company names mentioned herein may be the trademarks of
their respective owners. © 2017 Siemens Industry, Inc.
Siemens Industry, Inc.
Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089-4513
USA
Your feedback is important to us. If you have
comments about this document, please send them to
Document No. A6V112210116
Printed in the USA
Page 4 of 4
+ 1 847-215-1000
| General | Details |
|---|---|
| Name | SIEMENS 194-2042 Pnuematic Room Thermostat User Guide |
| Make | SIEMENS |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.12 MB |
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