Robertshaw 300-224 Installation And Programming Instructions page 18

OUTPUT TERMINAL FUNCTIONS – 300-226
4 min. (on/off)
1
Unlocked 2
Standard 3
*Not used — must be OFF
4
LED #1 with filter symbol 5
LED #2 with fault symbol
6
300-226
LED1
LED2
RS2
RS1
RS+V
OFF ON
4 min. (on/off)
1
Unlocked 2
Standard 3
*Not used — must be OFF
4
LED #1 with filter symbol 5
LED #2 with fault symbol
6
* Important: Switch #4 must be left in OFF position
W1 ................Auxiliary heat is energized as second stage
Y1 .................Compressor is energized with a call for
2 min. (on/off)
Locked
G...................Fan is energized with a call for heating or
Add-on
Not used*
LED #1 only
LED #2 only
R ...................Independent Switching Voltage**
24V ...............24 VAC hot from the equipment transformer
W1
Y1 24V(c)...........24 VAC common from the equipment
G
R
24V
LED 1...........Free lights for status or function indication
24V(c)
LED 2
O
B
RS2 ..............Use to connect outdoor temperature sensor
RS1
RS+V
O...................Energizes the reversing continuously in the
2 min. (on/off)
Locked
B..................Energizes the reversing continuously in the
Add-on
Not used*
LED #1 only
** Allows for DC operation required on some older
LED #2 only
heating or emergency heat
heating or cooling
cooling or selected by pressing the FAN
button
transformer
and/or indoor remote sensor options. Refer
to the instructions included with the sensors.
cooling mode.
heating and off modes.
Lennox and McQuay units.
18