Honeywell BCU 460 - Function of Sensor 3; Proof of Closure Function Test Period

BCU 460, BCU 465 · Edition 11.19 105
Parameters
11.12.3 Function of sensor 3
Parameter A103
Terminal 38 is assigned a sensor function using param-
eter A103.
The value ranges and descriptions for the parameter are
identical to parameter A101, see page103 (Function
of sensor 1).
11.12.4 Proof of closure function test period
Parameter A060
Parameter A060 = 0 to 6000s: testing time for the
closed position of one of the gas valves V1, V2, V3, V4
orV5.
When the start-up signal is received at terminal1, the
BCU checks that one of the gas valves (V1 to V5) is in
its closed position using the POC switch. If a signal is
not received from the POC switch at terminal36, 37
or38, depending on parameter A101, A102 or A103,
after the set testing time (gas valve is closed), the BCU
performs a fault lock-out with fault message“Ec1”.
As soon as the BCU has opened the gas valve, it que-
ries the open position of the valve via the POC switch.
If a signal is still being received from the POC switch at
terminal36, 37 or38 after the set testing time, the BCU
performs a fault lock-out with fault message“Ec8”.