55
Bentone
Abbreviations
AL
Alarm
FS
Flame signal
GM
Fan motor contactor
LP
Air pressure switch
M
Fan motor
P LT
Pressure switch for valve proving
Pmax
Pressure switch-max
Pmin
Pressure switch-min
POC
Proof of closure
PV
Pilot valve
R
Temperature or pressure controller
SB
Safety limiter
SK
Safety loop
STB
Safety limit thermostat
SV
Safety valve
WM
Water shortage
V1
Fuel valve 1
V2
Fuel valve 2
VP
Combustion pressure switch
SA
Actuator
SA-K
Low-fire position of actuator
SA-N
Postpurge position of actuator
SA-R
Home position of actuator
SA-V
Rated load position of actuator
SA-Z
Ignition load position of actuator
Z
Ignition transformer
Permissible position range
In Standby mode: Actuator is allowed to travel within
the permissible position range, but is
always driven to the home position;
must be in the home position for
phase changes
0°/10%
90°/100%
Position as supplied (0°)
Actuator fully open (90°)
Input/output signal 1 (ON)
Input/output signal 0 (OFF)
Input permissible signal 1 (ON) or 0 (OFF)
Symbols
Summary of Contents for STG 146i/2
Page 34: ...34 Bentone 6 2 Wiring diagram...
Page 123: ......
Page 124: ...Enertech AB P O Box 309 SE 341 26 Ljungby www bentone com...