Ladder Diagram (for R98LSe and R98LSe-ASME)
HOT |
|
| NEUTRAL |
3A(FUSE) | FROST SENSING |
|
|
SWITCH |
|
| |
ARRESTER |
|
| |
|
|
| |
VARISTOR | VARISTOR |
|
|
|
|
| |
GND | RELAY 1 |
| IGNITION |
| IG |
| SWITCHING |
|
| POWER SUPPLY |
|
PG | DC170V | DC12V |
E
D
DC12.6V
DC5V
DC40V
A B
WATERFLOW | A | |
SENSOR | WATERFLOW | |
QS | ||
SENSOR | ||
| CIRCUIT |
WATERFLOW | A | SG |
CONTROLDEVICE | WATERFLOW |
|
M |
| |
CONTROLDEVICE | ||
| CIRCUIT |
|
A | SG | ||
CONTROLDEVICE | |||
M | |||
CONTROLDEVICE | |||
| CIRCUIT |
| |
C | SG |
|
B | A B | C |
| MODULATING | |
| VALVEPOWER | |
| CONTROL |
|
| CIRCUIT |
|
| SG |
|
CPU | D | E |
CENTRAL |
|
|
PROCESSING | FAN |
|
UNIT |
| |
| CONTROL |
|
| CIRCUIT |
|
MODULATING SOLENOID VALVE
POV
COMBUSTION FAN
FAN
A 
RELAY 1
SG
RELAY
DRIVING
CIRCUIT
PG
A
THERMALFUSE
SV0
SOLENOID
FLAME ROD
OVERHEAT | SV1 | |
SV2 | ||
SWITCH | ||
| SV3 |
OUTGOING WATER
THERMISTOR
HEAT EXCHANGER |
THERMISTOR |
AIR TEMPERATURE
THERMISTOR
INDOOR MODEL ONLY
DRIVING
CIRCUIT
B SG
THERMISTOR CIRCUIT
SG
FLAME
DETECTING
CIRCUIT
SG
GND
A B
REMOTE
CONTROLLER
CIRCUIT
SG SG
FR
REMOTE CONTROLLER
38 | VB Series Outdoor LS Manual |