49
COMMISSIONING PROCEDURE:
WARNING
It is the purpose of this bulletin to explain the operation of the PPC4000 control and the NXD410
User Interface along with required FX servo motors and pressure/temperature transducers. The servo
motors control the air and fuel on the burner independently in accordance with the commissioned
information. Being there are an infinite number of burner sizes and types, it is beyond the scope of
this bulletin to show in absolute terms the proper combustion operation of the burner on which the
equipment is installed. This bulletin is a detailed guide on how to properly setup the PPC4000 and
associated equipment to achieve maximum efficiency. It is the responsibility of the commissioning
personnel to know the capabilities and limitations of the burner/boiler. This would include the turn
down ratio, ignition setting, low fire setting and high fire setting, and proper O2 levels at each firing
point along the curve. It is expected the commissioning or operating personnel be sufficiently trained
by the burner OEM to know the do's and don'ts of their particular burner and to have relevant experi-
ence in the theories and practices of combustion control. Fireye cannot accept any liability for any
consequences resulting from inappropriate, negligent or incorrect installation, commissioning or
adjustment of operating parameters of the equipment.
A profile is a set of points defining the servo motor positions along the burner's operating curve. The
operating curve begins at standby (P00), extends through purge (P01), ignition light-off (P02) and up
through the modulation firing rate (P03 to P23).
PROFILE SETPOINTS
Setpoints contain information about required motor positions. There must be at least one servo motor
named as AIR in each profile. There are four profiles (or tables) of setpoints available in the
PPC4000 control. The profiles may be represented using the diagram below:
WARNING
•
If a LOCKOUT occurs at any point the PPC4000 will not attempt a re-start
until the fault is cleared, unless the option to allow recycling is enabled in the
primary flame safeguard. Before moving to the ignition position to attempt a re-
start the system must perform any selected pre-purge.
•
Ensure that a purge position is entered for each drive as required, failure to
enter a purge position will mean all drives remain at their 'closed' positions.
•
After entering and/or adjusting any profile points for any profile it is the
responsibility of the commissioning personnel to verify that the resulting fuel
air ratio is acceptable for the appliance being controlled.
Gas position
(degrees )
Air Position
(degrees )
Oil Position
(degrees )
Air Position
(degrees )
2.1°
1.9°
Close (P00)
1.7°
1.9°
2.1°
87.9°
Purge (P01)
1.7°
87.9°
24.6°
30.6°
Ignition (P02)
10.6°
28.7°
21.3°
25.8°
Low Fire (P03)
10.6°
28.7°
76.8°
85.6°
High Fire (Pxx)
50.2°
83.5°
