Watts AERCO Benchmark 2.0 LN Operating & Maintenance Instructions page 99

RECOMMENDED PERIODIC TESTING CHECK LIST
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
See indicated sections of this manual for detailed procedures
Gages, monitors and
indicators
Instrument and
equipment settings
Firing rate control
flue, vent, stack or
intake air duct
Igniter
main fuel valve
valve position
leakage test
Combustion safety
flame failure
flame signal strength
low water fuel cut off
and alarm
slow drain test
high limit safety control
test
operating control
low air pressure
high and low gas
pressure interlocks
air valve purge position
switch
low fire position switch
safety valves
inspect burner
components
WARNING
Frequency Accomplished
by
Daily Operator
Daily
Weekly Operator
Service
Semiannually
technician
Service
Annually
technician
monthly Operator
Weekly Operator
Weekly Operator
Service
annually
technician
weekly Operator
weekly Operator
weekly operator
Semiannually operator
Service
annually
technician
annually Operator
monthly Operator
monthly Operator
Service
annually
technician
Service
Annually
technician
as required Operator
Service
Semiannually
technician
Remarks
Make visual inspection and record readings in
operator log
Make visual check against factory recommended
specifications
Verify factory settings
Verify factory settings
Check with combustion test equipment- see
section 7.4
Visual inspection for condition or obstructions
see section 7.2
Check position indicator
Close manual fuel supply valve and test for
pressure on down stream valve port
Close manual fuel supply valve check safety
shutdown timing
Read signal with meter and log see section 7.3
See section 6.3
Perform a slow drain test in accordance with
ASME Boiler and Pressure
Vessel Code section IV
See section 6.4
See section 3.2
See section 6.6
See section 6.2
See section 6.6
See section 6.7
As per A.S.M.E. Boiler and Pressure Vessel
Code section IV
See section 7.6
APPENDIX I
I-1