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-4506
Dual Temperature Thermostat
Description
The T-4506 Thermostat is a high volume
output, dual temperature, dual dial thermostat.
The T-4506 provides individual day and night,
or two set point temperature control.
Refer to T-4000 Series Pneumatic Room
Thermostat Product Bulletin (LIT-7171060P)
for important product information.
Repair Information
If the T-4506 Dual Temperature Thermostat
fails to operate within its specifications,
replace the unit. For a replacement
thermostat, contact the nearest
Johnson Controls® representative.
Selection Charts
T-4506 Dual Temperature Thermostat
1
1. Order cover and mounting bracket separately.
Code
Number
Description
T-4506-201 With Indexing Switch,
Switchover at 17 psig
Direct Acting, Horizontal Mounting
T-4506-202 Direct Acting, Vertical Mounting
T-4506-209 Reverse Acting, Horizontal Mounting
T-4506-203 Without Indexing Switch,
Switchover at 17 psig
Direct Acting, Horizontal Mounting
T-4506-204 Direct Acting, Vertical Mounting
T-4506-217 Reverse Acting, Horizontal Mounting
Commonly Used Accessories for T-4506 (Part 1 of 2)
Code
Number
Description
T-4002-124 Room instrument mounting bracket for
surface-mounting thermostats and
covers; includes drywall clips, spacers,
and mounting templates
T-4002-122 Terminal Connector, with two straight
fittings for plug-in connection to
5/32 in. O.D. polyethylene tubing
T-4002-123 Terminal Connector, with angle fittings
for surface mounted thermostats with
exposed tubing
T-4002-5003 Restricted adjustment pin (100/kit)
restricts adjustment of set point dial
T-4002-5012 Adjusting knob kit provides a means of
external setpoint adjustment
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)
Note: For additional accessories, refer to T-4000 Series Accessories.
Technical Specifications
T-4756-2141 Beige Plastic Cover, Horizontal,
2 set point windows (no thermometer)
T-4756-1738 Beige Plastic Cover, Horizontal,
2 set point windows with thermometer
T-4000-2144 Beige Plastic Cover, Vertical
(no thermometer, no set point windows)
T-4000-3144 White Plastic Cover, Vertical
(no thermometer, no set point windows)
T-4756-2145 Beige Plastic Cover, Vertical,
2 set point windows (no thermometer)
T-4756-1739 Beige Plastic Cover, Vertical,
2 set point window with thermometer
T-4506 Dual Temperature Thermostat
Sensitivity Adjustable from .75 to 4.0 psig/°F (9 to 50 kPa/°C)
Factory set at approximately 2.5 psig/°F (32 kPa/°C)
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 Day 15 psig (105 kPa)
Nominal Night 20 psig (140 kPa)
Dial Range 55 to 85°F (Two Dials)
Air Connections Two (Supply and Output)
Special Feature Optional Manual Indexing Switch
Commonly Used Accessories for T-4506 (Part 2 of 2)
Code
Number
Description
Code No. LIT-1921675
Issued January 15, 2008
T-4506 Dual Temperature Thermostat
Features
• available in Direct Acting (DIR) and
Reverse Acting (REV) models
• includes Fahrenheit dial
• direct acting available in vertical or
horizontal model
• reverse acting available in horizontal
model
• available with optional manual indexing
switch that permits you to restore the day
temperature of the individual thermostat
without affecting the other system
thermostats
• Indexing switch can be unlatched manually
or will automatically reset with the day
cycle