29
®
3.
Select the burner and the required profile. The motors will automatically move to their highest
positions and stop. If the purge setpoint has been entered before and no change is required, press
AUTO MAN
(NEXT). Otherwise, press
COM
(ENTER). P2 (ignition) is displayed.
4.
Wait for the pre-purge time to elapse. If the ignition setpoint has been entered before, the drives
will move to their ignition positions. If a change is required or the ignition setpoint has not been
entered before, move all the motors being used to their required ignition positions and press
COM
(ENTER).
5.
To attempt ignition of the burner, hold down the
AUTO MAN
(NEXT) key for approximately
three seconds. If a change is required to the ignition position move all of the motors to their
required positions and press
COM
(ENTER), if no change is required press AUTO MAN
(NEXT).
6.
Wait for the display to show P3 (low fire) after the relevant safety times have elapsed. If ignition
is unsuccessful and a safety shutdown occurs, investigate the problem and repeat steps 2-5 to
attempt ignition again.
7.
If the low fire setpoint has been entered before and no change is required, press
AUTO MAN
(NEXT). Otherwise, move each motor to the required low fire position and press
COM
(ENTER). P4 (next profile setpoint above low fire) is displayed.
8.
Repeat step 6 for each required profile setpoint, up to a minimum of P4 and a maximum of P23.
9.
Leave commission ratio mode. The last profile setpoint entered will become the high fire set-
point.
10.
If a controlled shutdown occurs, the unit will return to step 2. The set points entered in the cur-
rent commissioning session are not lost and the
AUTO MAN
(NEXT) key may be used to step
through the start-up sequence and fire the burner.
11.
If a safety shutdown occurs, the set points are kept in the same way as for a controlled shut-
down. It will be necessary to remove all faults before moving further than step 2.
Leaving Commission Ratio Mode
To leave commission ratio mode and return to run mode, press the key labeled
COM
(ENTER) for >
3 seconds then press the same key again to return to run mode.
•
If P2 (or higher) has been commissioned, the existing profile will be overwritten.
If you do
not wish the existing profile to be overwritten, disconnect the power to the unit without return-
ing to run mode
•
Only the set points used in the current commissioning session will be stored.
For example, if
an existing profile has set points up to P15 but only the set points up to P10 were viewed or
altered, then only the set points up to P10 will be stored. Therefore, it is vital that FAULT
MUTE (NEXT) is pressed to get to the last setpoint in the profile before leaving commission
ratio mode. This does not apply if only the close or purge set points (P0 or P1) are altered.
Adjust Ratio Mode
Adjust ratio mode is used only for changing an existing profile.
•
Using adjust ratio mode, it is possible to modify the motor positions for any setpoint in the firing
range from low to high fire (P3 and higher).
•
It is also possible to view all set points (P0 and higher), even with the burner off.
•
The set points may be chosen in any order.
•
It is not possible to modify a motor position so that it is higher than the next setpoint or lower
than the last setpoint.
•
It is not possible to modify any motor position so that it is higher than the high fire setpoint.
COMMISION RATIO MODE
RUN MODE
DATA
COM
