Maintenance Cycles; Legend - Honeywell krom schroeder IFD 258 Manual

10 Maintenance cycles

The automatic burner control unit IFD 258 requires
little servicing.
IFD 258 · Edition 03.12l
44 ซ.บรมราชชนนี 70 ถ.บรมราชชนนี ศาลาธรรมสพน์ ทวี ว ั ฒ นา กทม. 10170.
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11 Legend

Symbol Description
88
Display
88
Blinking display
Safety interlocks (Limits)
Start-up signal
Ignition transformer
Gas valve
Flame signal
Operating signal/RUN
Fault signal
Reset/Information
Input signal
Output signal
Ignition/High voltage
Z
ionization
I
Input/Output safety circuit
t Waiting time
W
t Flame simulation delay time
LV
Ignition time
t
Z
t Safety time on start-up (3, 5 or 10 s)
SA
t
Safety time during operation (< 1 s or < 2 s)
SB
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