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 controlled 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 labeled 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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