Riello 20047690 - Page 17

Technical description of the burner
15
20051011
GB
Key Fig. 8:
Tab. H
Times
Tab. I
AL
Alarm device
AUX
Auxiliary output
Dbr
Wire link
Lockout reset button (info button)
EK2
Remote lockout reset button
FSV
Flame signal amplifier
ION
Ionization probe
K...
Relay contact
LED
3-color signal lamp
LP
Air pressure switch
LR
Load controller
LR-OPEN
Load controller OPEN position
LR-CLOSE
Load controller CLOSED position
M
Fan motor
NT
Power supply unit
P LT
Pressure switch valve proving
Pmax
Pressure switch-max
Pmin
Pressure switch-min
POC
Proof of closure
PV
Pilot valve
QRA...
UV flame detector
R
Control thermostat or pressurestat
SA
Actuator
SA-KL
Actuator low-fire
SA-NL
Actuator high-fire
SA-R
Actuator feedback
SA-Z
Actuator CLOSED
SA-ZL
Actuator ignition load
SL
Safety loop
STB
Safety limit thermostat
SV
Safety valve
V1
Fuel valve
V2
Fuel valve
V2a
Fuel valve
W
Limit thermostat or pressure switch
Z
Ignition transformer
µC µC controller
Input/output signal 1 (ON)
Input/output signal 2 (OFF)
Input permissible signal 1 (ON) or 0 (OFF)
/re se t
(EK1)
TSA Safety time
tw Waiting time
t1 Prepurge time
t3 Preignition time
t3n Postignition time (P257 +0.3 seconds)
t4 Interval: end of safety time load controller
release
t5 Interval: Pilot valve OFF - load controller
release
t8 Postpurge time
t10 Specified time air pressure switch state mes-
sage (timeout)
t11 Opening time of actuator (timeout)
t12 Closing time of actuator (timeout)
td1 Test atmospheric pressure
td2 Test gas pressure
td3 Test space filling
td4 Test space evacuating