Riello 20047690 Installation, Use And Maintenance Instructions page 35

WIRING DIAGRAM
ELECTRICAL POWER
AWG 12 min
(NONTIME DELAY)
30A
(TIME DELAY)
20A
ATTENTION: USE ONLY COPPER CONDUCTORS
ATTENTION: CUSTOMER INSTALLATION
POSSIBILITY OF EXTERNAL MODULATION
OUTPUT OUTPUT
LOAD CONTROLLER LOAD CONTROLLER
S8724
Wiring key (Fig. 26)
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
33
TRIGGERING/SAFETY/DEVICES
GAS LOW PRESSURE
GB
AUXILIARY LOW
WATER CONTROL
OPERATION
SWITCH
INDICATORS
VOLTAGE FREE
CONTACT OUTLET
Fig. 26
20051011