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Centurion Water Heater- Edge [ii]: Install-Operation-Service
SECTION 7: MAINTENANCE
OMM-0153_A
• 8/25/2022 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 73 of 131
7.10 RECOMMENDED PERIODIC TESTING
W A R N I N G !
Periodic testing of all Water Heater controls and safety devices is required to ensure they
continue to operate as designed. Precautions must be taken while tests are being performed
to protect against bodily injury and property damage. The owner or user of an automatic
Water Heater 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 logbook.
Recommended Periodic Testing
ITEM
FREQUENCY ACTION BY REMARKS
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 Section 5.2) and the O
2
sensor (Section 7.4).
Flue, vent, stack and
intake air duct
Monthly
Operator
Visually inspection condition and check for
obstructions
Spark Igniter-Injector Weekly
Operator
See Section 7.2:
Ignitor-Injector
in this guide.
Air/Fuel Valve position Weekly
Operator
Check position indicator dial. See Section 4.2.
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 Section 6.7.
Flame signal strength Weekly
Operator
Check flame strength in
the Edge Controller’s
Unit
Status
screen.
Low water level cut off
and alarm
Weekly
Operator
See Section 6.4:
Low Water Level Fault Test.
Slow drain test
Semi-
Annually
Operator
Perform a slow drain test in accordance with ASME
Water Heater and Pressure Vessel Code, Section IV.
High water temp.
safety control test
Annually
Service Tech See Section 6.5:
Water Temperature Fault Test
.
Operating controls
Annually
Operator
See Section SECTION 3:
Edge Controller Operation
.
Low air flow
Monthly
Operator
See Section 6.8 and 7.8.
High and low gas
pressure interlocks
Monthly
Operator
See Sections 6.2 and 7.3.
Air/Fuel Valve purge
position switch
Annually
Service Tech See Section 6.10.
Air/Fuel Valve ignition
position switch
Annually
Service Tech See Section 6.11.
Safety valves
As required Operator
Check per A.S.M.E. Water Heater and Pressure Vessel
Code, Section IV.
Inspect burner
components
Semi-
Annually
Service Tech
See Section 7.6:
Burner Inspection
.