White Rodgers 24A34-1 User's Manual

White Rodgers Fans User's Manual - 24A34-1.
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24A34 Series

Fan/Heat Sequencers

INSTALLATION INSTRUCTIONS

 

 DESCRIPTION

 

 SPECIFICATIONS

The 24A34 Series Fan/Heat Sequencer gives the service tech-
nician a direct replacement for sequencing both fan and heat. 
The terminal markings on the 24A34 sequencers are equivalent 
to most other manufacturers’ types.
These sequencers may be wired in series, as shown in wiring 
diagrams, to allow sequencing of one through seven element 
furnaces.

CAUTION

!

To prevent electrical shock and/or equipment damage, 
disconnect electric power to system, at main fuse or 
circuit breaker box, until installation is complete.
Do  not  use  on  circuits  exceeding  specified  voltage.   
Higher  voltage  will  damage  control  and  could  cause 
shock or fire hazard.

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE 
INSTALLING  OR  OPERATING THIS  CONTROL  COULD  CAUSE  PERSONAL 
INJURY AND/OR PROPERTY DAMAGE.

www.white-rodgers.com

www.emersonclimate.com

PART NO. 37-4800C

Replaces 37-4800B

1050

TABLE NOTES:
➀ 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
➁ 24A34-14 Switch contacts designated F1 -  F2 instead of M1 - M2
♦  These contacts switch simultaneously

NOTE: Underwriters Laboratories requires a fan interlock circuit to insure the blower remains operating whenever more than one sequencer is used. The fan in-

terlock should be the M1 / M2 contacts of the second or third sequencer. All M1 / M2 contacts are wired to the blower motor so that any sequencer that is energized 

will keep the blower ON.

Electrical Ratings - Single Load Contact Ratings (All Models)

VAC

Resistive (Non-Inductive)

Motor Ratings (Inductive)

Pilot Duty

Watts

Amps

Full Load

Locked Rotor

120

3000

25.0

14.0A

72.0A

125 VA

240

6000

25.0

7.0A

42.0A

125 VA

480

6000

12.5

480 VA

Electrical Ratings - Single Load Contact Ratings (All Models)

Model 

Number

Timings Switches

Timings 

– 

ON

Timings 

– 

OFF

M1-M2 M3-M4 M5-M6 M7-M8 M9-M10 M1-M2 M3-M4 M5-M6 M7-M8 M9-M10

24A34-1

1

1

1-20

40-110

24A34-2

1

1

30-90

1-30

24A34-3

 

1

2

1-20

1-20

40-110 40-110

24A34-4

1

2

30-90

30-90

1-30

1-30

24A34-5

 

2

3

1-110

1-110

1-110

1-110

1-110

1-110

  24A34-6

 

2

4

1-110

1-110

1-110

1-110

1-110

1-110

1-110

1-110

24A34-14 ➀➁

4

5

1-160

1-160

1-160

1-160

1-160

1-160

1-160

1-160 1-160

1-160

24A34-15

1

1

1-60

75-95

0.578207s