Справочник Пользователя для White Rodgers 24A5X
To prevent electrical shock and/or equipment
damage, disconnect electric power to system at
main fuse or circuit breaker box until installation
is complete.
damage, disconnect electric power to system at
main fuse or circuit breaker box until installation
is complete.
Label all wires prior to disconnection when ser-
vicing controls. Wiring errors can cause improper
and dangerous operation.
vicing controls. Wiring errors can cause improper
and dangerous operation.
Following installation or replacement, follow
appliance manufacturers’ recommended instal-
lation/service instructions to insure proper op-
eration.
appliance manufacturers’ recommended instal-
lation/service instructions to insure proper op-
eration.
Printed in U.S.A.
PART NO. 37-3782B
Replaces 37-3782A
9715
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD ST. LOUIS, MO 63123-5398
(314) 577-1300 FAX (314) 577-1517
9797 REAVIS ROAD ST. LOUIS, MO 63123-5398
(314) 577-1300 FAX (314) 577-1517
WHITE-RODGERS
24A5X SERIES
Fan/Heat Sequencer
INSTALLATION INSTRUCTIONS
This sequencer is a direct replacement unit for sequenc-
ing both fan and heat. This sequencer has a solid-state
24 volt heater between the “H-H” terminals and a variety
of normally open contact sets. These contacts close and
open within specified timings and are used to control the
furnace fan and heating elements on demand from a
room thermostat.
ing both fan and heat. This sequencer has a solid-state
24 volt heater between the “H-H” terminals and a variety
of normally open contact sets. These contacts close and
open within specified timings and are used to control the
furnace fan and heating elements on demand from a
room thermostat.
Operator: Save these instructions for future use!
PRECAUTIONS
THIS CONTROL MUST BE INSTALLED BY A QUALI-
FIED INSTALLER.
FIED INSTALLER.
All wiring must conform to local and national electrical
codes and ordinances.
codes and ordinances.
This control is a precision instrument, and should be
handled carefully. Rough handling or distorting compo-
nents could cause the control to malfunction.
handled carefully. Rough handling or distorting compo-
nents could cause the control to malfunction.
This control has been accurately calibrated at the factory.
Any attempt to re-calibrate this control will void the White-
Rodgers warranty.
Any attempt to re-calibrate this control will void the White-
Rodgers warranty.
Do not use on circuits exceeding specified volt-
ages. Higher voltages will damage control and
could cause shock or fire hazard.
ages. Higher voltages will damage control and
could cause shock or fire hazard.
If in doubt about whether your wiring is millivolt,
low or line voltage, have it inspected by a quali-
fied heating and air conditioning contractor or a
licensed electrician.
low or line voltage, have it inspected by a quali-
fied heating and air conditioning contractor or a
licensed electrician.
CAUTION
!
WARNING
!
Some sequencers contain auxiliary contacts that are
used to energize the heater of another sequencer. This
arrangement provides a definite delay in energizing heat-
ing elements and prevents more than the required num-
ber of elements from being energized at the same time.
It also allows one room thermostat to control a large
number of elements without excessively high current
through the thermostat.
used to energize the heater of another sequencer. This
arrangement provides a definite delay in energizing heat-
ing elements and prevents more than the required num-
ber of elements from being energized at the same time.
It also allows one room thermostat to control a large
number of elements without excessively high current
through the thermostat.