56
For AUTO modulation:
For MANUAL modulation:
To adjust the modulation rate, the user will press MDFY and use the UP and DOWN keys. The mod-
ulation will change with the UP and DOWN arrows. When complete the user presses the SAVE key
to save the current position.
Only points P00, P01 and P02 can be altered without having any effect on the remaining points in the
current profile. This would mean that in commissioning mode, if only P00, P01 and or P02 are
changed or revised the remaining setpoints would not be altered if the C-MODE key were pressed to
exit.
COMMISSIONING O2 TRIM WITH THE OXYGEN PROBE
Prior to commissioning with the oxygen probe the user must assure the oxygen probe is installed
correctly, connected to the PPC4000, communicating with the PPC4000 and the O2 SETUP menu
parameters are correctly set, i.e. OPERATION set to CONTROL, etc.
Care should be taken when selecting trim limit ratio and maximum trim limit. The P-GAIN and I-
GAIN terms determine the responsiveness of the trim function and are dependent on burner size, fuel
type, and transport delay. It is recommended that default values be used to start and adjusted accord-
ingly during system check out.
During commissioning with oxygen and with the O2 OPERATION set to CONTROL, the O2 level
and flue temperature currently being measured is displayed with the servo position information.
The commissioning procedure previously described is the same with O2 trim.
The O2 trim function requires each profile setpoint from p03 (low fire) to pHigh (high fire) to have
an O2 target value associated with that profile setpoint. During the commissioning process the
installing personnel must insure the O2 target level is a true representation of the burner operation at
that particular setpoint. This is done by waiting sufficient time at each profile setpoint for the O2
level to reach a true and reliable level.
A
U
T
O
s
1
6
>
M
O
D
U
L
A
T
I
O
N
R
A
T
E
1
0
0
%
<
A
I
R
(
1
)
6
9
.
5
°
G
A
S
(
3
)
3
8
.
0
°
A
U
T
O
s
1
6
>
M
A
N
U
A
L
M
O
D
R
A
T
E
1
0
0
%
<
A
I
R
(
1
)
6
9
.
5
°
G
A
S
(
3
)
3
8
.
0
°
During the commissioning and adjust ratio procedures, O2 trim is not enabled.
<
C
O
M
M
I
S
I
O
N
I
N
G
p
0
4
>
A
I
R
(
1
)
2
7
.
2
<
G
A
S
(
3
)
1
6
.
3
O
2
L
E
V
E
L
6
.
3
8
%
F
L
U
E
T
E
M
P
2
8
0
F
It is the responsibility of the installing and operating personnel to ensure the O2
target levels are within the operating limits of the burner and will not allow a
hazardous combustion condition to occur.
