Behaviour In Start-Up Position/Standby; Flame-Simulation Check In Start-Up Position; Standby - Honeywell BCU 460 Technical Information

Parameters

4 .3 Behaviour in start-up position/standby

4 .3 .1 Flame-simulation check in start-up position/

standby

Parameter 15
This defines the instant for the flame simulation check.
00
00
Parameter 15 = 0: The flame simulation check is con-
00
ducted after applying the start-up signal (ϑ) during the
waiting time t .
W
00
Parameter 15 = 1: The flame simulation check is con-
ducted provided no start-up signal (ϑ) is applied (during
the so-called start-up position/standby). This allows
fast start-up of the burner since there is no waiting time
t .
W
The burner must have been switched off for at least 4 s
before start-up in order for the flame simulation check
to be conducted correctly.
What is an extraneous signal?
An extraneous signal is an incorrect signal which is
detected as a flame signal out of sequence. If the BCU
BCU 460, BCU 465 · Edition 03.16l
01 02 . . . 88
V1
t
t
W
01 02 . . . 88
V1
02 . . . 88
t
t
W
V1
t
02 . . . 88
V1
t
460 or BCU 465 notices such an extraneous signal
during the flame simulation check, it starts the flame
simulation delay time t
nal is discontinued during this period, the burner can
start up. Otherwise, a fault lock-out occurs. 01 blinks
on the display.
Flame simulation check in standby position (parameter
15 = 1):
00
t
LV
Flame simulation check on start-up (parameter 15 = 0):
00 01
t LV
The flame simulation check of the burner is active until
valve V1 is enabled.
for 25 s. If the extraneous sig-
LV
01 88
1
5
4
ϑ
7
9
12
V1
14
V2
16-17
18-19
t
01 88
1
4
7
12
V1
9
14
V2
18-19
t
47