AERCO BMK 2.0 LN Natural Gas (SN G-11-1861 and above) - Manual (Page 114)

Chapter 9
Benchmark 2.0LN Low NOx Boiler
GF-123
RS232 Comm. Installation, Operation and Maintenance Manual OMM-
0046_0E
Page 114 of 170 AERCO International Inc.● 100 Oritani Dr. ● Blauvelt, NY 10913. ● Ph: 800-526-0288 PR1 08/20/12
9. m0 = Default (Operating) Menu
m1 = Setup Menu
m2 = Configuration Menu
m3 = Tuning Menu
m4 = Calibration Menu
m5 = Diagnostic Menu
10. To change a value or setting for a displayed menu option, proceed as follows:
(a) Enter C, followed by the number to the right of the displayed option to be changed, and
then press <Rtn>.
(b) Enter the desired value or setting for the option and press <Rtn>. Refer to Chapter 3,
Tables 3-2 through 3-5 for allowable entry ranges and settings for the Operating, Setup,
Configuration and Tuning Menus. (The Calibration and Diagnostic Menus should only
be used by Factory-Trained service personnel).
(c) Menu changes will be stored in non-volatile memory.
11. To redisplay the menu and view the option which was just changed in step 5, enter D and
press <Rtn>.
12. To display the Fault (F) Log, Sensor (S) Log or Time (T) Line Log, press F, S or T followed
by <Rtn>. Refer to paragraph 9.4 for descriptions and samples of these data logs.
13. To log off and terminate the RS232 communication link, press L followed by <Rtn>.
9.4 DATA LOGGING
During operation, the C-More Control Panel continuously monitors and logs data associated
with operational events, faults and sensor readings associated with the boiler or water heater
system. Descriptions of these data logs are provided in the following paragraphs. The basic
procedure for accessing each data log is described in paragraph 9.3, step 7.
9.4.1 Fault Log
The C-More Control Panel logs the last 20 faults (0 – 19) starting with the most recent (#0).
They can be viewed in the front panel display or via the RS232 port. The Fault Log cannot be
cleared. If the Fault Log already contains 10 faults, the earliest fault is overwritten when a new
fault occurs. A sample Fault Log display is shown in Table 9-1.
NOTE
The Operation Time (T) Log can store thousands of records. Therefore, to
view the most recently logged record, enter “T” followed by 0 (zero) and
press Enter (i.e. T0 <Enter>). To view earlier records in reverse
chronological order, enter T and press Enter. To go back 200 or 1000
records, enter T200 or T1000, etc. and press Enter.
9.4.2 Operation Time Log
The Operation Time Log consists of a string of ASCII records stored in non-volatile memory
within the C-More Control Panel. Events such as power-up, ignition and turn-off are time
stamped. Data logged while the unit is running are run-length encoded. Data is logged or the
run-length incremented every 30 seconds. For a new run record to be logged, the fire rate or
flame strength must change by more than 5%, or the run mode must change. At steady-state,
the run-length is allowed to reach a maximum of 30 minutes before the record is logged. This