Riello RX 300 S/PV Installation, Use And Maintenance Instructions page 37

WIRING DIAGRAM
ELECTRICAL POWER
(NONTIME DELAY)
(TIME DELAY)
ATTENTION: USE ONLY COPPER CONDUCTORS
ATTENTION: CUSTOMER INSTALLATION
POSSIBILITY OF EXTERNAL MODULATION
OUTPUT
LOAD CONTROLLER
S9091
Wiring key (Fig. 30)
AUX LWCO Auxiliary low water control operation
H1 Remote lockout signal
LWCO Low water control operation
PGMin Minimum gas pressure switch
Q1 Single phase disconnecting switch
TS Safety thermostat
X1 Burner terminal strip
Start-up, calibration and operation of the burner
MANUAL
RESET HIGH
LIMIT CONTROL
ATTENTION:
FOR MODULATION 4-20 mA,
MODIFY THE INTERNAL
PARAMETERS
OUTPUT
LOAD CONTROLLER
TRIGGERING/SAFETY/DEVICES
GAS LOW PRESSURE
SWITCH
Max 8A AC1 120V AC
35 GB
LOW WATER
CONTROL
OPERATION
AUXILIARY LOW
WATER CONTROL
OPERATION
INDICATORS
VOLTAGE FREE CONTACT OUTLET
Max 4A FLA 120V AC
Fig. 30
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