
16
Wiring – continued –
Wiring diagram LRR 1-40
123
2716
LNN
1
LH
1
+
-
C
CS
2345678
17 18 19 20 21 22 23 24
9
25
10
26
11 12
28
13
29
14
30
15
23 25
Potentiometer
24V AC/DC
Observe polarity
with DC!
MAX limit
Safety circuit
24V DC
CAN bus
Actual value output
4-20mA (option)
Terminating resistor
120Ω
5V DC
L
L
L
CLOSED
L
OPEN
MIN limit
N
L
N 25 23 12
10
11
Continuous blowdown control
= Valve OPEN 25
= Valve CLOSED 23
Actuator
Continuous blowdown valve BAE 36-1
Feedback potentiometer 1000Ω
Fig. 4
Fig. 5
Test
Contact in burner control,
if stand-by function is desired.
Terminal 7/8
Voltage input 24V
AC/DC for external command
contact closed
Control OFF, valve CLOSED,
intermittent blowdown OFF [Stand-by]
(Might come from bus supply.)
S
Twisted pair
cables
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