32
£
OPERATION IN THE COMMISSIONING MODE (Using the Commissioning Display)
WARNING: While the unit is in commissioning mode or adjust ratio mode certain safety
checks cannot be performed by the NX Series Controller and therefore the safety of the system
operation is the sole responsibility of the commissioning engineer. Do not allow the fuel to
accumulate in the combustion chamber for longer than a few seconds without igniting, an
explosive mixture could result. If a flame failure occurs at any point the unit will not attempt
a re-start until the fault is cleared and will perform any selected post-purge and pre-purge,
before moving to the ignition position.
General
If any settings in the unit are to be changed, it is necessary to enter a commission mode. Three pass-
codes are available for this purpose.
1.
Site passcode - allows adjustment of some option parameters.
2.
Adjust ratio passcode - allows adjustment of some option parameters and entry to adjust ratio
mode.
3.
Supplier passcode - allows entry to all commissioning modes.
Commissioning Data
Option parameters
Option parameters contain information about the configuration of the burner and the boiler. Option
parameters may be adjusted in
option set mode
, but it may not be possible to adjust all of them if the
burner is on.
SITE PASSCODE
RUN MODE
ADJUST RATIO
PASSCODE
ADJUST RATIO
MODE
OPTION SET
MODE
SUPPLIER
PASSCODE
COMMISSION
RATIO MODE
BURNER ON
BURNER OFF
COMM KEY
1
2
3
MODE*
*
Using the mode key toggles back and forth between
Commission Ratio Mode and Option Set Mode
