Verona WALL HUNG GAS BOILER - Manual (Page 13)

5. Electric Diagrams
ye bk wh gy bu rd
bk gy
gy
gy
M
~
t
probe NTC
C.h. temperature
COM
NO
M
~
COM
NO NC
1 2 3
bk
bu bn
rd
rd
gnye gy wh
bu
rd
bk
bu
wh
gy bu gnye
bk bk
gy gnye bu
bk
bk
bu bu
bu
bu
rd bk
gy gy
L N
rd bu bn gnye gnye
gnye bu bn
bu rd
gnye
Flow Switch
Primary Circuit Pump
Valve
Gas
External controls
terminal
block
Electric supply
terminal
block
Fan Safety
Thermostat
Air Pressure
Switch
Ignition
Electrodes
Flame Detection
Electrode
bn - brown
bu - blue
bk - black
wh - white
rd - red
gy - grey
ye - yellow
gnye - green/yellow
wh
gy
rd
rd
bk
bu
bn
gy
ye wh bu
rd
1
bk
rd
*
* ---> directly connected to the electronic ignition board
Caution: Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation.
Verify proper operation after servicing
RIVA HEAT ONLY MANUAL - REV A 13