PR2: 04/22/13 Page
149
of
158
Benchmark 2.0LN Dual-Fuel Low NOx Boiler
Operation and Maintenance Manual
OMM-0052_0E
GF-127
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
•
Ph: 800-526-0288
APPENDIX I: RECOMMENDED PERIODIC TESTING CHECK LIST
WARNING
NOTE:
Periodic testing of all boiler controls and safety devices is required to determine that they are operating
as designed. Precautions shall be taken while tests are being performed to protect against bodily injury and
property damage. The owner or user of an automatic boiler system should set up a formal system of periodic
preventive maintenance and testing. Tests should be conducted on a regular basis and the results recorded in
a log-book.
Item
Frequency Provided By
Remarks
Refer to indicated paragraphs of this manual for detailed procedures
Gauges, monitors and
indicators
Daily
Operator
Visual inspection and record readings in
operator log
Instrument and
equipment settings
Daily
Operator
Visual check against factory recommended
specifications
Weekly
Operator
Verify factory settings
Firing Rate Control
Semi-Annually Service Tech. Verify factory settings
Annually
Service Tech.
Check with combustion calibration test
equipment. See paragraph 7.4 and Chapter 4.
Flue, vent, stack or
intake air duct
Monthly
Operator
Visually inspection condition and check for
obstructions
Spark Igniter
Weekly
Operator
See paragraph 7.2
Air/Fuel Valve position
Weekly
Operator
Check position indicator dial (paragraph 3.9)
SSOV Leakage test
Annually
Service Tech.
Check for leakage in accordance with the
SSOV manufacturer’s (Siemens)
recommendations.
Flame failure
Weekly
Operator
Close manual gas shutoff valve and check
safety shutdown. See paragraph 6.7
Flame signal strength
Weekly
Operator
Check flame strength using the Control Panel
Operating Menu. See paragraph 3.4.
Low water level cut off
and alarm
Weekly
Operator
See paragraph 6.4
Slow drain test
Semi-Annually
Operator
Perform a slow drain test in accordance with
ASME Boiler and Pressure Vessel Code,
Section IV.
High water
temperature safety
control test
Annually
Service Tech. See paragraph 6.5
Operating controls
Annually
Operator
See paragraph 3.2
Low air flow
Monthly
Operator
See paragraph 6.8
High and low gas
pressure interlocks
Monthly
Operator
See paragraphs 6.2 and 6.3
Air/Fuel Valve purge
position switch
Annually
Service Tech. See paragraph 6.10
Air/Fuel Valve ignition
position switch
Annually
Service Tech. See paragraph 6.11
Safety valves
As required
Operator
Check per A.S.M.E. Boiler and Pressure
Vessel Code, Section IV
Inspect burner
components
Semi-Annually Service Tech.
See paragraph 7.6
Condensate Trap
Semi-Annually
Operator
See paragraph 7.7
