Honeywell BCU 465 - Flameless Operation

BCU 460, BCU 465 · Edition 11.19 97
Parameters
11.8.11 Flameless operation
Parameter A064
As soon as there is a signal at the Flameless mode input
(terminal7), the BCU in High temperature mode can
switch to Flame mode or Flameless mode immediately
or upon the next burner start.
Parameter A064 = 0: upon next burner start. As long as
the start-up signal is present, the burner control unit
will remain in Flame mode. It will not switch to Flame-
less mode until the next burner start.
Parameter A064 = 1: immediate burner start. The
switchover to Flameless mode takes place immediately.
The start-up signal must be applied to terminal1. The
burner in Flame mode is switched off and restarted in
Flameless mode. If the signal is applied to the input at
terminal7 during a burner start-up, the burner start-up
will be continued until the end of the minimum operat-
ing time.
If the signal at terminal7 drops out during the flame-
less start-up or operation, the burner will be switched
off immediately. If the start-up signal continues to be
applied, a burner start may be performed in Flame
mode, depending on the other parameters.
Parameter A064 = 2: immediate switchover. As soon as
there is a signal at the Flameless mode input (termi-
nal7), the burner in Flame mode is switched straight to
Flameless mode. Any burner start-up will not be contin-
ued until the end of the minimum operating time.
If the burner control unit is in standby position, it is
started immediately in Flameless mode as soon as the
start-up signal is received at terminal1.
If the signal at terminal7 drops out during the flame-
less start-up or operation, the burner will be switched
off immediately. If the start-up signal continues to be
applied, a burner start may be performed in Flame
mode, depending on the other parameters.