White Rodgers 24A34-3 - Manual
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Table of Contents:
- Page 2 – WIRING DIAGRAMS; IS A FACTORY-INSTALLED JUMPER
- Page 3 – FOR FOUR ELEMENT FURNACES; FOR FIVE ELEMENT FURNACES; COMBINATION Fan and Heater Loads
- Page 4 – FOR SIX ELEMENT FURNACES; FOR SEVEN ELEMENT FURNACES
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 F
1
- F
2
instead of M
1
- M
2
♦
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 M
1
/ M
2
contacts of the second or third sequencer. All M
1
/ M
2
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
➀
1
2
1-20
1-20
–
–
–
40-110 40-110
–
–
–
24A34-4
1
2
–
–
30-90
30-90
–
–
–
1-30
1-30
–
24A34-5
➀
2
3
1-110
1-110
1-110
–
–
1-110
1-110
1-110
–
–
24A34-6
➀
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
–
–
–
–
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
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Summary
2 WIRING DIAGRAMS FOR ONE ELEMENT FURNACES FAN DELAY OFF COMBINATION Fan and Heater Loads SEPARATE Fan and Heater Loads ONE POLE WIRING M2 M1 To 1st element & fan H H To 24 VAC wall thermostat (One Timing) 24A34-1 / -2 TWO POLE WIRING M2 M1 To fan H H To 24vAC wall thermostat (One Timing) 24A34-...
3 WIRING DIAGRAMS FOR FOUR ELEMENT FURNACES COMBINATION Fan and Heater Loads SEPARATE Fan and Heater Loads TWO POLE WIRING M8 M7 To 4th element H H To 24vAC wall thermostat (Two Timings) 24A34-6 M2 M1 To fan & 1st element M4 M3 To 2nd element H H TWO POLE M6 M5 To 3rd element SINGLE-STAGE Room T...
TWO POLE M8 M7 To 5th element H H To W1 of 24vAC wall thermostat (Two Timings) 24A34-6 M2 M1 To fan & 1st element M4 M3 To 4th element H H TWO POLE M6 M5 To common of 24v transformer To 7th element To fan interlock To 6th element To W2 of 24vAC wall thermostat TWO POLE M8 M7 H H (Two Timings) 24...
