![background image](http://html1.mh-extra.com/html/watts/aerco-benchmark-750/aerco-benchmark-750_user-manual_4058382143.webp)
Benchmark 750 – 1000 Boiler User Manual - INTERNATIONAL
APPENDIX D – RECOMMENDED PERIODIC TESTING
OMM-0119_0A
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
143
of
170
GF-130-I
Ph.: 800-526-0288
11/03
/2016
Appendix D:
RECOMMENDED PERIODIC TESTING
--WARNING! -
Periodic testing of all Heating 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 Heating
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
Accomplished
By
Remarks
Refer to indicated sections 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 Technician Verify factory settings
Annually
Service Technician
Check with combustion calibration test equipment.
See sections 4.3 and 7.4.
Flue, vent, stack or
intake air duct
Monthly
Operator
Visually inspection condition and check for
obstructions
Spark Igniter-Injector
Weekly
Operator
See section 7.2
Air/Fuel Valve position
Weekly
Operator
Check position indicator dial (section 3.10)
SSOV Leakage test
Annually
Service Technician
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 section 6.7
Flame signal strength
Weekly
Operator
Check flame strength using the Control Panel
Operating
menu. See section 3.4.
Low water level cut off
and alarm
Weekly
Operator
See section 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 Technician See section 6.5
Operating controls
Annually
Operator
See section 3.2
Low air flow
Monthly
Operator
See section 6.8
High and low gas
pressure interlocks
Monthly
Operator
See sections 6.2 and 6.3
Air/Fuel Valve purge
position switch
Annually
Service Technician See section 6.10
Air/Fuel Valve ignition
position switch
Annually
Service Technician See section 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 Technician
See section 7.6
Condensate Trap
Semi-
Annually
Operator
See section 7.7
Oxygen (O
2
) Level
Monthly
Operator
Verify oxygen level is between 3% and 8% during
Heating Boiler operation