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Commission Ratio Mode
Commission ratio mode is used for entering a new profile or changing an existing profile.
Using commission ratio mode, it is possible to step through each setpoint including close, purge and
ignition. Once a setpoint has been entered, it is not possible to go back and modify it again in the
same commissioning session. To do this, adjust ratio mode must be used after all the required set-
points have been entered.
Entering Commission Ratio Mode
To enter commission ratio mode, turn the burner off. Once the burner has completely shut down,
press the key labeled
COM
and obtain the supplier passcode value using the
UP/DOWN
keys. Press
the key labeled
COM
(ENTER).
If the entered pass code was correct, servomotor positions will be seen on display in addition to ‘P0’.
This represents the closed position setpoint.
Using Commission Ratio Mode
WARNING: Use extreme care while commissioning the system. While operating in commis-
sioning mode the safety of the system is the sole responsibility of the commissioning engineer.
Incorrect positioning of either fuel or air could cause a hazardous situation to occur.
If the servo-motor positions have been up-loaded it is essential that the combustion is verified
at each firing position to ensure a hazardous condition cannot occur, and for the data to be
stored in the controller.
To adjust the position of a servomotor, use the left/right keys to point to the servomotor to be
adjusted and then use the UP/DOWN keys to adjust its position. Depending on the profile selected,
fuel 1 motor or fuel 2 motor may not be available.
Each setpoint in the profile is referred to with a letter and number (refer to the following chart).
No.
Name
Comments
P0
Close
This defines the positions the motors will move to when the
burner is off, and must be set to the lowest position each
motor can reach.
P1
Purge
This defines the positions the motor will move to when the
burner is purging, and must be set to the highest position each
motor can reach.
P2
Ignition
Position during ignition. May be outside the normal firing
range.
P3
Low fire
Low fire setpoint.
Px
High fire
High fire setpoint, which is the last setpoint entered
(max. P24)
The procedure for entering or modifying a profile is as follows:
1.
Enter commission ratio mode. P0 (close) is displayed in the bottom right window.
2.
If the close setpoint has been entered before and no change is required, press
AUTO MAN
(NEXT). Otherwise, move each motor to its lowest position and press
COM
(ENTER). P1
(purge) is displayed.
RUN MODE, BURNER OFF
SUPPLIER PASSCODE
COM
COM
