Robertshaw 300-224 Installation And Programming Instructions page 21

WIRING DIAGRAM – 300-229
4 events
Smart fan OFF
4 min. (on/off)
Unlocked
Electric
Single stage
LED #1 only
LED #2 only
300-229
LED1 LED1
LED2 LED2
RS2 RS2
RS1 RS1
RS+V RS+V
NO NO
COM COM OCC OCC
NC NC
1 2 events
2 ON
3 2 min. (on/off)
4 Locked
5 Gas
Multistage
6
LED #1 with filter symbol
7
LED #2 with fault symbol
8
W2 W2
Y2 Y2
W1 W1
Y1 Y1
G G
R R
24V 24V
{
Note 2 24V(c) 24V(c)
O O
B B
Note 1: If jumper is removed, a separate
transformer must be used to power the loads.
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
W2
Y2
W1
Y1
G
O
Reversing Valve
B
Remove connection if
separate transformer used
21
Common
24 VAC
Transformer
Line
Voltage