Product Overview

The performance specifications are nominal and conform to acceptable industry standards. For applications 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. © 2011 Johnson Controls, Inc.
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T-4003
Submaster High Volume Output Thermostat
Description
The T-4003 Submaster Thermostat is a high
volume proportional thermostat. The T-4003
can be reset from a remote location, or in
accordance with a referenced temperature
variation.
Refer to T-4000 Series Pneumatic Room
Thermostat Product Bulletin (LIT-7171060P)
for important product information.
Selection Charts
Note: For additional accessories, refer to T-4000 Series Accessories.
T-4003 Submaster Thermostat
1
1. Order cover and mounting bracket separately.
Code Number Description
T-4003-201 Direct Acting, Horizontal Mounting
T-4003-203 Reverse Acting, Horizontal Mounting
Commonly Used Accessories for T-4003
Code
Number
Description
T-4002-124 Room instrument mounting bracket for
surface-mounting thermostats and
covers; includes drywall clips, spacers,
and mounting templates
T-4512-100 Terminal Connector, with three straight
fittings for plug-in connection to
5/32 in. O.D. polyethylene tubing
T-4002-5003 Restricted adjustment pin (100/kit)
restricts adjustment of set point dial
T-4000-2138 Beige Plastic Cover, Horizontal or
Vertical (no thermometer, no set point
windows)
T-4000-2139 Beige Plastic Cover, Horizontal (no
thermometer, no set point windows)
T-4000-3139 White Plastic Cover, Horizontal (no
thermometer, no set point windows)
T-4000-2140 Beige Plastic Cover, Horizontal,
thermometer (no set point windows)
T-4000-3140 White Plastic Cover, Horizontal,
thermometer (no set point windows)
T-4000-2141 Beige Plastic Cover, Horizontal,
1 set point window (no thermometer)
T-4000-3141 White Plastic Cover, Horizontal,
1 set point window (no thermometer)
T-4000-2142 Beige Plastic Cover, Horizontal,
1 set point window with thermometer
T-4000-3142 White Plastic Cover, Horizontal,
1 set point window with thermometer
Technical Specifications
T-4003 Submaster High Volume Output Thermostat
Sensitivity Fixed at approximately 2.5 psig/°F (32 kPa/°C)
Remote Reset Adjustable from 0.15 psig to 2.5 °F/PSI (1.8 to 30°C/kPa)
Flow Capacity 400 SCIM (107 mL/s)
Air Consumption 20 SCIM (5 mL/s)
Supply Pressure 13 to 25 psig (91 to 175 kPa), Nominal 20 psig (140 kPa)
Master Pressure Variable Input 0 to 20 psig (0 to 140 kPa)
Dial Range 55 to 85°F
Air Connections Three (Supply, Output, Remote Reset Input)
Code No. LIT-1921665
Issued January 15, 2008
T-4003 Submaster Thermostat
Features
• available in Direct Acting (DIR) and
Reverse Acting (REV) models
• includes Fahrenheit dial
• available in horizontal model only
Repair Information
If the T-4003 Submaster Thermostat fails to
operate within its specifications, replace the
unit. For a replacement thermostat, contact
the nearest Johnson Controls®
representative.