Submittal Sheet

R24 Series Heat Sequencers
Learn More
For more information about R24 Series Heat Sequencers,
contact your Honeywell distributor, call 1-800-328-5111
or visit customer.honeywell.com.
Automation and Control Solutions
In the U.S.:
Honeywell
1985 Douglas Drive North
Golden Valley, MN 55422-3992
In Canada:
Honeywell Limited
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
www.honeywell.com
63-9578
April 2007
© 2007 Honeywell International Inc.
Applications
Sequencing of heater banks in:
• Electric furnaces
• Baseboard heaters
• Duct heaters
• Suspension heaters
• Recreational vehicle blower and element control
• Heat pump blower and heating element control
• Motor speed switching in air conditioning (high speed)/
heating systems (low speed) where a single set of
contacts handle combination motor and heater element
loading in the heating function
• Control circuits requiring definite sequence of operation
on both start up and shut down
Key Features
• Solid-state PTC Heaters
• Quick-connect terminals
• Shock and vibration resistant
• Mounts in any position
• Contact ratings — to 25 Amps at 120 or 240 Volts,
and 12.5 Amps at 480 Volts
• Full-load rating auxiliary contacts
• Standard operating ambience between - 40° F
(-40.0° C) and 165° F (73.8° C)
• UL approved; CSA/CUR approval pending
The Smart, Dependable Choice
You don’t need to stock dozens of
heat sequencers. Cover nearly all
applications with the Honeywell R24
Series. They replace more than 40
competitive models and work perfectly
in units made by major HVAC manufacturers. Honeywell R24
Series Heat Sequencers are built with the famous Honeywell
reliability for long service life.
Easy Installation
Honeywell R24 Series Heat Sequencers are solid-state positive
temperature coefficient (PTC) heaters that mount in any position.
Quick-connect terminals speed up installation. In addition to the
fact that the R24 Series Heat Sequencers replace a wide range
of models, installation is also simplified because you don’t have
to spend time looking for an exact model replacement.
Honeywell R24 Series Heat Sequencers have you covered.
Electric Heat Sequencers
Product # Switches Timings
Timings — ON Timings — OFF
M1-M2 M3-M4 M5-M6 M7-M8 M9-M10 M1-M2 M3-M4 M5-M6 M7-M8 M9-M10
R24AA1008 1 1 1-20 40-110
R24AA3004 1 1 30-90 1-30
R24BA1006 2 1 1-20 1-20 40-110 40-110
R24BA3002 2 1 30-90 30-90 1-30 1-30
R24CB4007 3 2 1-110 1-110 1-110 1-110 1-110 1-110
R24DB4005 4 2 1-110 1-110 1-110 1-110 1-110 1-110 1-110 1-110
R24ED5007 5 4 1-160 1-160 1-160 1-160 1-160 1-160 1-160 1-160 1-160 1-160
Canada R24AA3421 1 1 1-20 1-50
Canada R24AA3422 1 1 15-45 1-30
Canada R24AA3423 1 1 25-55 15-45
Canada R24AA3424 1 1 30-75 1-40
Canada R24AA3425 1 1 40-90 1-30
Canada R24BB3426 2 2 1-20 30-90 40-90 1-30
Canada R24BB3427 2 2 1-160 1-160 1-160 1-160
Canada R24AA3429 1 1 15-35 25-55
Canada R24BB3436 2 2 1-20 30-45 45-110 1-30
Canada R24AA3437 1 1 1-110 1-110
Temperature: -50˚ F to 165˚ F
Terminations: Solder or screw type 1/4" quick connect
Ratings: Estimate — 25 A resistive and 14 A inductive at 120 Vac
SPST: Single Pole Single Throw
DPST: Double Pole Single Throw
SPDT: Single Pole Double Throw
DPDT: Double Pole Double Throw
Agency: UL/CSA
Table Notes:
* M1-M2 and M3-M4 are always first switches to turn ON and last to turn OFF.
All other switches are random ON and random OFF.
* R24ED5007 Switch contacts designated F1-F2 instead of M1-M2.
* R24BB3428 is Double Pole Double Throw model.
* R24AA2006 is a Single Pole Double Throw model for Heat Pump Applications.
* These contacts switch simultaneously:
ON Time: Elapsed time (min. to max.) to make contact after heater is energized.
OFF Time: Elapsed time (min. to max.) to break contact after heater is de energized.