Robertshaw Deluxe Programmable - Manual (Page 18)

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