Air Control - Honeywell BCU 460 Technical Information

Air control

4 Air control
A central protective system such as the FCU 500 takes
over air control. It monitors the static air pressure as
well as the air volume required for pre-purge, start-up
and after the furnace has been shut down. The air actu-
ators (BCU with LM..F1 = actuator IC 40, BCU with LM..
F3 = valve) are actuated for this purpose by the capacity
control system of the BCU.
After being enabled by the protective system, the BCU
can start the burners. The capacity is controlled during
operation by an external temperature control system.
PZL PZH PZ
VAS
DG DG DG
DG DG
min max
49 49 50 50 15 15 14 14 13 13
46 46
45 45
ϑ
1 1
p /2
u
2 2
µC µC
P P
3 3
>750° >750°
FCU 500..F0 FCU 500
58 47 48
DL DL DL DL
min min Purge Purge
M M
PZL PZL PDZ PDZ
DG DG DG DG
BCU 460, BCU 465 · Edition 11.19
VAS
BCU/LM..F3 BCU/LM..F3
VAS
VCG
VR..L
BCU/LM..F3 BCU/LM..F3
VCG
VR..L
TE
M
33