Bacharach PCA 2 24-9448 - Manual (Page 39)

Instruction 24-9448 4-5
Operation
4.5 Performing a Combustion Test
Ensure that the followng has been completed, and then proceed wth the
combuston test as descrbed below:
• Turn ON analyzer and allow t to warm up (Secton 4.2).
• Select fuel beng burned (Secton 4.3).
• Inset probe nto stack (Secton 4.4).
• If necessary, nsert optonal prmary ar thermocouple nto combuston-
ar stream of burners that use an outsde source of combuston ar.
1. Press the RUN/HOLD button to start the test.
You should hear the pump start runnng and
see the word RUN appear at the top of the
Combuston Test screen.
2. Press the ENT button to vew the varous
combuston test screens that contan the data
lsted n Table 4-1 on Page 4-6.
The screens to the rght show typcal combus-
ton test data for an analyzer equpped wth
O
2
, CO
LOW
, NO and NO
2
sensors.
TIP: Use the zoom-display to show only the
values of O
2
, CO, and efficiency in large char-
acters. Refer to Section 3.13.
Sensor Indicators: The followng ndcators
appear n the sensor's data feld dependng on
certan condtons:
(
∗ ∗ ∗
) Sensor that s not calbrated or defectve.
(XXX) Sensor overrange
(
- - -
) The calculated data cannot be dsplayed
because the measured data necessary to make
the calculaton s out of range (.e., oxygen level
above 16%).
3. Press ENT untl T-STK s dsplayed. Loosen
thumbscrew on probe stop and move probe n
and out of the stack untl the stack’s core tem-
perature (hot spot) s located as ndcated
by the hghest T-STK readng; then tghten
thumbscrew to prevent further probe move-
ment. Locating the highest stack temperature
is very important for accurate efficiency calculations.
RUN NATURAL GAS
O
2
4.0 %
CO 12 ppm
EFF 82.6 %
CO
2
9.5 %
T-STK 374 °F
T-AIR 68.0 °F
EA
21.3 %
CO(3) 13 ppm
PRINT MENU SAVE
F1 F2 F3
RUN NATURAL GAS
NO
18 ppm
NO
2
6 ppm
NOx 24 ppm
NO(3) 19 ppm
NO
2
(3) 1 ppm
NOx(3) 25 ppm
PRINT MENU SAVE
F1 F2 F3
O
2
4.0
%
CO 12
ppm
EFF 82.6
%
PRINT MENU SAVE
F1 F2 F3