Application, Installation | White Rodgers 57T01-843 instruction

57T01-843

Time Delay Relay

Installation and Operating 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.

APPLICATION

This document provides installation and checkout procedures for the 57T01-843 Time Delay Relay.

!WARNING

Hazardous voltage – disconnect power before servicing.

!WARNING

Thisinformationisforusebyindividualshavingadequate backgrounds of electrical and mechanical experience. Any attempt to repair a central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.

SPECIFICATIONS

The 57T01-843 Time Delay Relay is for use in compres- sor-run air conditioning and heat pump systems to delay the blower shut-off after the compressor has shut off. This delay allows the residual cooled air to be blown into the control- led space, increasing the efﬁciency of the system in cooling. Depending on electrical hookup in a heat pump system, delay of blower shut-off could also occur in heating.

Relay switching has 80 (±16) second delay timing.

Installation of the new ETDR is the same, terminals are la- beled the same, but are in a different physical location on the new part (see ﬁgs 1, 2, 3, 4).

!CAUTION

All phases of this installation must comply with National, State and Local Codes.

Electrical Ratings

Contact Ratings:

Power Pole (Amperes per pole)—

	208/240/277 VAC
Full Load	7
Locked Rotor	36
Resistive	15
U.L. Approved Horsepower	3/4 hp

Pilot Duty Pole	Min: 3 VA at 24
	Max: 25 VA at 24 VAC
Min voltage req. for pickup	75 percent of nominal
	coil voltage
Input voltage	24 VAC nominal
Total Power Consumption	0.5 VA (relay deenergized)
	4.0 VA (relay energized)

INSTALLATION

When installing this product...

1.Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.

2.Check the ratings given in the instructions and on the product to make sure the product is suitable for your application.

3.Installer must be a trained, experienced service technician.

4.After installation is complete, check out product operation as provided in these instructions.

!WARNING

Disconnect all electric power including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power can not be inadvertently energized.Failure to disconnect all power before servicing can cause severe personal injury or death.

PART NO. 37-6970A

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