Servomotors
During burner start-up the burner control drives the servomotors to maximum position
and during shutdown to 0-position. The burner control supervises the correlation of the
position settings and back coupling.
During burner shutdown, check the air damper and the locking screws of the fuel
adjusting valve. Push air damper lightly to make sure they are firmly attached.
O
2
/CO trim control (if equipped)
● The system is self-checking during start-up.
● Confirm proper fuel/air ratio with flue gas analysis.
Boiler safety devices
Test method
Outcome
When the burner is in standby position, activate, for example,
the temperature limiter switch from the boiler safety chain (X3–
04:1) and start the burner. Perform this test to all safety circuit
devices one by one.
Devices connected to the safety circuit are described in the
electrical diagram.
The burner does not start and the text
Safety loop open
switches with
Safety
shutdown
on the display.
6.9 Fault and lockout history
Reading fault and lockout history from display menu
The active burner control fault status is shown on the display.
Fault and lockout history can be read from the display menu.
OperationalStart
FaultHistory
LockoutHistory
Resetting fault
You can reset the burner lockout also from the control panel. Reset the fault as follows:
1. Press
Esc
until you access the menu level 1.
2. Select
Operational Stat
->
Status/Reset
.
3. The fault code display appears on the display. Press
Esc
.
The following text appears:
NAYTTO1 ver. 4
4. To reset the failure, press
Enter
.
5. To return to the menu level, press
Esc
.
M5178 1647EN
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Содержание GKP-350 M
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