White Rodgers Air Conditioner 57t01 843 User Manual

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.  
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.  
WARNING  
!
Hazardous voltage – disconnect power before servicing.  
Relay switching has 80 ( 16) second delay timing.  
WARNING  
!
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).  
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.  
CAUTION  
!
AllphasesofthisinstallationmustcomplywithNational,  
State and Local Codes.  
SPECIFICATIONS  
Electrical Ratings  
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)  
Contact Ratings:  
Power Pole (Amperes per pole)—  
208/240/277 VAC  
Full Load  
7
36  
Locked Rotor  
Resistive  
15  
U.L. Approved Horsepower  
3/4 hp  
INSTALLATION  
When installing this product...  
WARNING  
!
1. Read these instructions carefully. Failure to follow them  
could damage the product or cause a hazardous condition.  
Disconnect all electric power including remote  
disconnects before servicing. Follow proper lockout/  
tagout procedures to ensure the power can not be  
inadvertentlyenergized.Failuretodisconnectallpower  
before servicing can cause severe personal injury or  
death.  
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.  
PART NO. 37-6970A  
0831  

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