Robertshaw 300-224 Installation And Programming Instructions page 17

WIRING DIAGRAM – 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
LED1
LED2
RS2
RS1
RS+V
300-226
* Important: Switch #4 must be left in OFF position
2 min. (on/off)
Locked
Add-on
Not used*
Led #1 only
Led #2 only
W1
Y1
G
R
24V
24V(c)
O
B
Note 1: If jumper is removed, the R
terminal may be used to accommodate
independent switching circuits.
Note 2: This thermostat may be used
with 24 Volt DC. The negative side of the
DC supply must be wired to the 24V (C)
terminal.
Note 1
W1
Y1
G
O
B
17
24 VAC
Transformer
Line
Voltage
Remove connection if
separate transformer used