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Features
Adjustable Sensitivities and
Set Points
Individual Set Points on Dual
Temperature Controllers
Pneumatic Feedback for
Greater Accuracy
Vibration and Shock
Resistant
Meets Governmental and
Commercial Requirements
Single or Dual Bimetal
Sensing Elements
Element Identification Labels
Rugged Construction and
Decorative Design
The T-4000 Series Pneumatic
Room Thermostats provide
individual space temperature
control in all types of heating and
cooling applications. By producing
a proportional output signal, these
thermostats modulate controlled
devices in response to load
changes in the space. This
imposes the least demand on
mechanical heating and cooling
apparatus. A variety of high
volume output and low volume
output controllers are available to
meet the functional requirements of
any control system. Auxiliary
devices are available to perform
functions such as two-position
action, high-low pressure selection,
sequencing, etc.
High Volume Output
Thermostats
The high volume output
thermostats feature pneumatic
feedback and volume
amplification to provide fast and
accurate proportional response.
All models feature an output test
connection which can be used for
service and calibration.
A variety of covers (see Page 3)
and mounting accessories (see
© 1985 Johnson Controls, Inc.
Code No. LIT-7171060P
T-4000 Series
Pneumatic Room Thermostats
Typical Low
Volume Output
Thermostat
Table 1) for horizontal and vertical
mounting are available and must
be ordered separately.
Model Descriptions
The T-4002 is a single temperature
thermostat available in direct and
reverse acting models.
The T-4003 submaster thermostat
can be reset from a remote location
or in accordance with a reference
temperature variation. An increase in
master pressure from a remote
source will increase (direct
readjustment) or decrease (reverse
readjustment) the set point of the
direct or reverse acting model
respectively.
The T-4054 energy manager
heating-cooling room thermostat
features an adjustable deadband of
0 to 30F (0 to 16C ) between
heating and cooling set points (see
Fig. 1). This deadband encourages
energy conservation and prevents
Pneumatic Control Manual
Room Devices Section
Concealed
Mounted Thermostat
Typical High Volume Output
Thermostat
energy waste by eliminating
heating and cooling overlap.
The T-4506 is a dual temperature,
dual dial thermostat designed to
provide individual day and night
or two set point temperature
control. The set point change is
accomplished with a change in
supply pressure. A 15 PSIG
105 kPa) supply represents the
lower element and a 20 PSIG
(140 kPa) supply represents the
upper element. The action of
both elements is the same. A
change in either set point does
not affect the other set point. On
day-night applications with
20 PSIG representing the night
set point, an optional manual
indexing switch is available to
restore the day temperature of the
individual thermostat without
affecting the other system
thermostats. The indexing switch
can be unlatched manually or
will automatically reset with the
day cycle.
717.1
Product Bulletin
T-4000
Issue Date
1285
Typical Diffuser Mounted
Thermostat
1
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Table of Contents
Related Manuals for Johnson Controls T-4002
Summary of Contents for Johnson Controls T-4002
- Page 1 The T-4002 is a single temperature control. The set point change is apparatus. A variety of high thermostat available in direct and...
- Page 2 covers are included with these The T-4516 is also a dual Note: All dual temperature thermostats. temperature, dual dial thermostat thermostats come equipped with for individual day and night element identification labels control or weekend setback. Model Descriptions indicating the function of the Functionally it is similar to the element.
- Page 3 Application and Drawing Identification T-4600 T-4756 T-4506 T-4516 T-4000-2144 T-4600 T-4756 * Covers with Thermometers have both °F and °C scales. T-4000 Product Bulletin...
- Page 4 Thermostat Specification and Selection Guide (table rows continued on facing page) Type Action- Sensitivity Flow Capacity Supply Pressure * Proportional Consumption T-4002 Single Direct or Adjustable from .75 400 SCIM 20 SCIM 13 to 25 PSIG (91 to Temperature Reverse to 4 PSI/F°...
- Page 5 The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products.
- Page 6 6 T-4000 Product Bulletin...
- Page 7 T-4000 Product Bulletin...
- Page 8 Notes Controls Group 507 E. Michigan Street P.O. Box 423 Printed in U.S.A. Milwaukee, WI 53202 8 T-4000 Product Bulletin...