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I
Ladder Diagram
CR, CC
HOT NEUTRAL
1 20VAC
1· �
� I
l_l_J
GFI
Thermistor
�
Transformer
n
vJJ\J
"r "r "r
AC1 50V
� DC1 5V
�
DC5V
� Flow Sensor �
f-
f-
APS
- - --j
GPS
----j
Fan
�
Hall Sensor
�
Water Le � kage
Datact1on
- - --j
Outlet
�
�
Thennistor
f-
Inlet
�
�
Thermistor 1
Inlet
I
-
Thermistor 2
HTL switch
Heat Exchanger
�
HTL switch
Exhaust
�
�
<(
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�
�
�
�
Primary
Sencondary
D
I
\
fl
)
�
�
-
Modulation
H
GV
�
I
Relay Power Supply
I
�
�
MCU 1
�
H
Relay 2
I -
Y
Relay 4
I--
I
y
Remote Controller
Interface
Relay 1
Main GV
Relay 2
'L,
SGV 1
Relay 3
'L,
SGV 2
Relay 4
Igniter
Relay s
AN
_§ peed Control
Water Adjustment
Valve
Flow Control
Flame rod
WD-RSS
-
Communication
�
Interface
Driving Circuit
�
Relay 1
I-
..-c=J--
t--1
f-c=:J
Relay 3
I -
H
-c=J-
f--c=:J-
Relay 6
I-
H
-c=J-
Remote
Ready Link
Controller
Interface
�
I
MCU 2
I
Ready Link
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