Honeywell BCU 460, Technical Information, Page: 65 / 145

BCU 460, BCU 465 · Edition 11.19 65
Parameters
Name Parameter Value range Description
Factory default
settings
Running time selection A041
0
1
2
3
Off; checking the positions for minimum/maximum
capacity
On; for approaching the positions for minimum/maximum
capacity
On; for approaching the position for maximum capacity
On; for approaching the position for minimum capacity
0
Running time A042 0 – 250
Running time in seconds (can only be selected if
I020 = 2 or 3)
250
Over-run A043
0
1
2
3
Off
Post-ventilation
Low fire; actuator feedback
Low fire; time-bound
0
Air actuator control A048
0
1
2
4
Opens on external activation
Opens with gas stage 1
Opens with gas stage 2
Opens with V4 burner 1
0
Air actuator can be activated externally on
start-up
A049
0
1
Cannot be activated
Can be activated externally
0
Air actuator in the event of fault A050
0
1
Cannot be activated
Can be activated externally
1
Valve proving system A051
0
1
2
3
Off
Tightness test before start-up
Tightness test after shut-down
Tightness test before start-up and after shut-down
0
Relief valve (VPS) A052
0
1
2
3
4
5
V0
V1
V2
V3
V4
V5
2
Measurement time for Vp1 A056
3
5 – 25
30 – 3600
Time in seconds
in 5 s steps
in 10 s steps
3600
Valve opening time tL1 A059 2 – 25 Time in seconds 2
Proof of closure function test period A060 0 – 6000 Time in seconds 10
Minimum operating time tB A061 0 – 250 Time in seconds 0
Minimum pause time tMP A062 0 – 3600 Time in seconds 0