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Two Stage Models RS4220C and RS5220C
EQUIPMENT TO
TERMINAL
CONNECT
24V AC
L
Compressor Fault
Output
Second stage
Y2
cooling
connection.
Second stage
W2
heat connection
Emergency Heat
E
Connection
Three Stage Models RS4320C and RS6320C
EQUIPMENT TO
TERMINAL
CONNECT
E
Third stage heat
DESCRIPTION
Connect to fault signal for input from
a compressor.
Energizes on a call for second stage
cooling (aux.).
Energizes on a call for second stage
heating (aux.).
Energizes on a call for emergency heat.
DESCRIPTION
Energizes on a call for 3rd stage heat
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