36
Inputs
Phase
A
P
0
Input not assessed
Input must be active
for cont. op.
Input must be passive
for cont.
op.
Air
pressure
switch1
Gas pressure
switch1
Air
pressure
switch2
Fan
speed
Flame
Demand
(CAN bus)
Aux. valve/ Servomotor
Ignition
Fan
(PWM)
Fuel
valve BV2
3
1
2
4
5
6
8
U
System start
Relay
test
Start-up
Operation
Shutdown
Fault
states
9
7
C
Waiting
Standby
F6
10
11
Code
Enable
(plug 152/T2)
P
Operation
with flue gas damper
Demand
(CAN bus)
Enable
(plug 152/T2)
Operation
without flue gas damper
Plug
100
Blocking/fan
output
(plug
152/S3)
Gas pressure
switch1
Outputs
L
Signal
change
Assessed
subject
to
output
Output active
L
Subject
to heat demand
Fuel valve
BV1
Fig. 21
Burner control unit
Flow diagram for burner start
5833296
Codes
Содержание Vitocrossal CRU 1000
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