3 Commissioning Procedure
Mk8 MM Manual Page | 82
message ‘Select Commissioning’ will appear. Press and the MM will go through purge. The
message ‘Set up START position’ will appear to ignite a flame in the burner, see section 3.4.4. Once the
burner is firing, the message ‘Set Golden Start Position’ will appear. Press to enter the
GOLDEN START position. The message ‘Save Commission’ will appear, press to save the
GOLDEN START position and then press to return to run mode.
Note: If FGR START has also been enabled, this positon must be entered after the GOLDEN START
position.
The Golden Start position of the fuel and air servomotors is completely independent from the modulating
load index and commissioned value data.
The facility is particularly useful on combustion systems with large turndowns and when firing heavy oil, as it
enables the burner to start/ignite at a fuel rich position and then, after a stable flame is established, return to
the commissioned combustion curve.
The Golden Start position needs to be entered for each required fuel.
The MM holds the Golden Start position for a time set in Parameter 15; this time starts from the point of main
flame. After this time, if the Golden Start fuel position is between Low Fire and High Fire, the air damper will
open and the fuel valve will stay in the same position, until fuel/air ratio is on the commissioned combustion
curve. If the Golden Start fuel position is outside of the main curve, then both the air damper and fuel will go
to the Low Fire position. Once on the commission curve, the MM will modulate as per load requirement.
Golden Start can be set in Option 29 to start from first ignition instead of after the main flame stabilisation
phase has passed, this is particularly useful for briefly providing additional fuel when starting an oil flame with
direct spark (no pilot mode – see option 111)
To Next Page
Loading...
Need help?
General
