White Rodgers 21D28-6 User Manual download pdf

SPECIFICATIONS

Electrical Ratings:

Pilot Duty Pole ..................... 3 VA at 24 VAC (Minimum)

25V at 24 VAC (Maximum)

Input Voltage....................... 24 VAC nominal

Total Power Consumption............. 0.5 VA (relay de-energized)

4.0 VA (relay energized)

57T01-843 BLOWER TIME DELAY RELAY

The 57T01-843 Time Delay Relay is for Use in Air Handlers Installed

in Compressor-Run Air Conditioning and Heat Pump Systems to

Delay the Blower Shut-Off After the Compressor has Shut Off.

Replaces Trane Part Numbers D155079P01 and RLY 2807

FEATURES

•Allowsresidualcooledairtobeblownintothecontrolledspace,increasingthe

 efciencyofthesystemincooling.

•Dependingonelectricalhookupinaheatpumpsystem,delayofblowershut-off

could also occur in heating.

Model Number

Contact Ratings:

Power Pole (Amperes per pole)-

57T01-843

208/240/277 VAC

Full Load 7

LockedRotor 36

Resistive 15

U.L. Approved Horsepower

57T01-843

57T01-843 BLOWER

TIME DELAY RELAY

www.white-rodgers.com

COOLING /

REFRIGERATION

SPECIFICATIONSElectrical Ratings:Pilot Duty Pole ...... 3 VA at 24 VAC (Minimum)

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White Rodgers 21D28-6 User Manual