21
OPERATION LAYOUT
Switching times are given in seconds, in the burner
startup sequence.
Legend for the times
t1
Pre-purge time with air damper open.
t2
Safety time.
t3
Pre-ignition time, short (“Z” connected to
terminal “16”).
t4
Interval between voltage at terminals “18” and “20”
t5
Air damper running time to OPEN position.
t6
Air damper running time to low-flame position
(MIN).
t7
Permissible after-burn time.
t8
Interval to the OPEN command for the air damper.
LAL 2.25
t1
t2
t3
t4
18
4
2
12
t5
t6
t7
t8
optional
optional
12
4
(A)
D2275
Low-High
Содержание C9511200
Страница 14: ...14 RL 28 2 38 2 SINGLE PHASE ...
Страница 15: ...15 RL 50 2 SINGLE PHASE ...
Страница 16: ...16 RL 28 2 38 2 50 2 SINGLE PHASE ...
Страница 17: ...17 RL 38 2 50 2 THREE PHASE ...
Страница 18: ...18 RL 38 2 50 2 THREE PHASE ...