White Rodgers installation instructions 24A5X SERIES, White-Rodgers, Description, Precautions

	24A5X SERIES
WHITE-RODGERS	Fan/Heat Sequencer
	INSTALLATION INSTRUCTIONS

Operator: Save these instructions for future use!

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

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.

DESCRIPTION

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.

THIS CONTROL MUST BE INSTALLED BY A QUALI- FIED INSTALLER.

All wiring must conform to local and national electrical 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.

This control has been accurately calibrated at the factory. Any attempt to re-calibrate this control will void the White- Rodgers warranty.

!WARNING

Do not use on circuits exceeding specified volt- 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.

PRECAUTIONS

!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.

Label all wires prior to disconnection when ser- 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.

WHITE-RODGERS DIVISION	Printed in U.S.A.	PART NO. 37-3782B
EMERSON ELECTRIC CO.
		Replaces 37-3782A
9797 REAVIS ROAD ST. LOUIS, MO 63123-5398
(314) 577-1300 FAX (314) 577-1517		9715