3 sensor log, Benchmark 1.5ln dual-fuel low nox boiler, Gf-121 – AERCO BMK 1.5 LN Dual Fuel Feb 2013 User Manual
Page 107
CHAPTER 9: RS232 COMMUNICATION
PR2: 05/09/12 Page
107 of 162
Benchmark 1.5LN Dual-Fuel Low NOx Boiler
Operation and Maintenance Manual
OMM-0041_0C
GF-121
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
allowed to reach a maximum of 30 minutes before the record is logged. This means that no more
than 30 minutes of data can be lost if the unit loses power. Table 9-2 shows a sample Operation
Time Log for a boiler.
The Operation Time Log can only be accessed through the RS232 interface using a laptop or other
terminal device. Ten operation time records are displayed for each T command entry. The operation
time log can be cleared ONLY by factory authorized personnel using the Clear Log option in the
Factory menu.
NOTE:
The Sensor (S) Log can store up to 1200 records. Therefore,
to view the most recently logged record, enter “S” followed by
0 (zero) and then press Enter (i.e. S0
earlier records in reverse chronological order, enter S and
press Enter. To go back 200 or 700 records, enter S200 or
S700, etc. and press Enter.
Sensor Log
9.4.3
The sensor values can be logged at a different rate if needed by setting the Sensor Log Interval in
the Diagnostics Menu. The log interval can vary from once every minute to once every day. Table 9-
3 shows a sample Sensor Log every 5 minutes for a boiler running in Constant Setpoint mode.
Table 9-1: Sample Fault Log Display
No.
Fault Message
Cycle
Date
Time
0
Direct Drive Signal Fault
609 1/10/02
8:42am
1
Low Gas Pressure
366 7/04/01
5:29pm
2
Loss of Power
0 1/01/01
11:50am
Table 9-2: Sample Operation Time Log Display
Status
Fire Rate
Flame
Run Length
Date
Time
Off, Direct Drive
0
0
8
1/15/02
2:35pm
Run, Direct Drive
38
100
34
1/15/02
2:27pm
Run, Direct Drive
31
100
30
1/15/02
1:53am
Run, Direct Drive
35
100
2
1/15/02
1:23pm
Run, Direct Drive
29
100
0
1/15/02
1:21pm
Ignition
0
0
0
1/15/02
1:20pm
Off, Switch
0
0
35
1/15/02
12:30pm
Run, Manual
40
100
0
1/15/02
11:55am
Ignition
0
0
0
1/15/02
11:55am
Power-up
0
0
0
1/15/02
11:50am
Table 9-3: Sample Sensor Log Display
Setpt Outlet Outdr
FFWD
Aux
Inlet
Exhst
CO O2 Flow
Date
Time
130
181
OPEN
OPEN
OPEN
OPEN
OPEN
0
.0
0
1/15/02 5:51pm
130
180
OPEN
OPEN
OPEN
OPEN
OPEN
0
.0
0
1/15/02 5:46pm
130
180
OPEN
OPEN
OPEN
OPEN
OPEN
0
.0
0
1/15/02 5:41pm
130
179
OPEN
OPEN
OPEN
OPEN
OPEN
0
.0
0
1/15/02 5:36pm
130
180
OPEN
OPEN
OPEN
OPEN
OPEN
0
.0
0
1/15/02 5:31pm
130
180
OPEN
OPEN
OPEN
OPEN
OPEN
0
.0
0
1/15/02 5:26pm
130
180
OPEN
OPEN
OPEN
OPEN
OPEN
0
.0
0
1/15/02 5:21pm
130
180
OPEN
OPEN
OPEN
OPEN
OPEN
0
.0
0
1/15/02 5:16pm
130
179
OPEN
OPEN
OPEN
OPEN
OPEN
0
.0
0
1/15/02 5:11pm
130
180
OPEN
OPEN
OPEN
OPEN
OPEN
0
.0
0
1/15/02 5:06pm